obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

93 files changed, 35537 insertions, 0 deletions

diff --git a/libobjc/ChangeLog b/libobjc/ChangeLog
new file mode 100644
index 000000000..b48054fd3
--- /dev/null
+++ b/libobjc/ChangeLog
@@ -0,0 +1,2925 @@
+2013-04-12  Release Manager
+
+	* GCC 4.6.4 released.
+
+2012-03-01  Release Manager
+
+	* GCC 4.6.3 released.
+
+2011-11-20  Andreas Tobler  <andreast@fgznet.ch>
+
+	* configure: Regenerate.
+
+2011-10-26  Release Manager
+
+	* GCC 4.6.2 released.
+
+2011-10-14  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	Backport from mainline
+	2011-10-09  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	PR libobjc/49883
+	* init.c (__objc_exec_class): Work around a bug in clang's code
+	generation.  Clang sets the class->info field to values different
+	from 0x1 or 0x2 (the only allowed values in the traditional GNU
+	Objective-C runtime ABI) to store some additional information, but
+	this breaks backwards compatibility.  Wipe out all the bits in the
+	fields other than the first two upon loading a class.
+
+2011-10-14  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	Backport from mainline
+	2011-08-06  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	PR libobjc/50002
+	* class.c (__objc_update_classes_with_methods): Iterate over meta
+	classes as well as normal classes when refreshing the method
+	implementations.  This fixes replacing class methods.
+
+2011-06-27  Release Manager
+
+	* GCC 4.6.1 released.
+
+2011-05-25  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	Backport from mainline
+	2011-05-24  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	PR libobjc/48177
+	* selector.c (__sel_register_typed_name): Use sel_types_match()
+	instead of strcmp() to compare selector types (Suggestion by
+	Richard Frith-Macdonald <rfm@gnu.org>).
+
+2011-03-25  Release Manager
+
+	* GCC 4.6.0 released.
+
+2011-02-28  Nicola Pero  <nicola.pero@meta-innovation.com>
+	
+	* selector.c (sel_getTypedSelector): Return NULL if there are
+	multiple selectors with conflicting types.
+	* objc/runtime.h (sel_getTypedSelector): Updated documentation.
+	
+2011-02-28  Richard Frith-Macdonald <rfm@gnu.org>
+
+	PR libobjc/47922
+	* gc.c (class_ivar_set_gcinvisible): Use _C_GCINVISIBLE instead of
+	a hardcoded "!".
+
+2011-02-13  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* configure: Regenerate.
+
+2010-12-26  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* init.c (create_tree_of_subclasses_inherited_from): Use
+	class_superclass_of_class instead of assuming a class is
+	unresolved when it could be resolved.  Tidied up assignment and
+	check.
+	(__objc_tree_insert_class): Enhanced DEBUG_PRINTF.
+	(objc_tree_insert_class): Tidied up loop; return immediately upon
+	inserting a class.
+	(__objc_exec_class): Do not set __objc_class_tree_list.
+	
+2010-12-24  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* selector.c (sel_getTypedSelector): Return NULL if given a NULL
+	argument.
+	(sel_registerTypedName): Same.
+	(sel_registerName): Same.
+	* objc/runtime.h: Updated documentation.
+	
+2010-12-24  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/runtime.h (class_addIvar): Updated documentation.  The
+	alignment is actually the log_2 of the alignment in bytes.
+	* ivars.c (class_addIvar): Corresponding change to the
+	implementation.
+	
+2010-12-24  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/runtime.h (sel_getType): Renamed to sel_getTypeEncoding to
+	be consistent with method_getTypeEncoding and
+	ivar_getTypeEncoding.
+	(sel_copyTypedSelectorList, sel_getTypedSelector): New.
+	* selector.c (sel_getType): Renamed to sel_getTypeEncoding.
+	(sel_copyTypedSelectorList, sel_getTypedSelector): New.
+	(sel_get_type): Updated call to sel_getType.
+	
+2010-12-24  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/runtime.h (class_conformsToProtocol,
+	class_copyProtocolList): Updated documentation.
+
+2010-12-23  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* init.c (create_tree_of_subclasses_inherited_from): Updated
+	DEBUG_PRINTF messages.
+	(__objc_tree_insert_class): Same.
+	(__objc_send_load_using_method_list): Same.
+	(__objc_send_load): Same.
+	(__objc_exec_class): Same.  In particular, do not print the module
+	name since it is no longer used.
+	* sendmsg.c (__objc_send_initialize): Added DEBUG_PRINTFs for
+	tracking +initialize calls.
+	(__objc_update_dispatch_table_for_class): Added DEBUG_PRINTFs for
+	tracking updates of dispatch tables.
+	(__objc_install_dispatch_table_for_class): Same.
+	
+2010-12-23  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* Makefile.in (libobjc$(libsuffix).la): Link with -Wc,-shared-libgcc.
+	(libobjc_gc$(libsuffix).la): Likewise.
+
+2010-12-23  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* sendmsg.c (class_addMethod): Return NO if the method already
+	exists in the class.
+
+2010-12-22  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* init.c (duplicate_classes): New.
+	(__objc_exec_class): Initialize duplicate_classes.
+	(__objc_create_classes_tree): Ignore classes in the
+	duplicate_classes table.
+	(__objc_call_load_callback): Same.
+	(__objc_init_class): If a duplicate class is found, add it to
+	duplicate_classes instead of aborting.  Return YES if the class is
+	not a duplicate, and NO if it is.
+	* objc-private/runtime.h (__objc_init_class): Updated prototype.
+
+2010-12-22  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc-private/objc-list.h: Reindented file.  No code changes.
+	* objc-private/sarray.h: Same change.
+
+2010-12-22  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc-private/accessors.h: Removed 'extern "C"' guards.  This
+	file is never compiled with C++.
+	* objc-private/hash.h: Same change.
+	* objc-private/objc-list.h: Same change.
+	* objc-private/objc-sync.h: Same change.
+	* objc-private/protocols.h: Same change.
+	* objc-private/runtime.h: Same change.
+	* objc-private/sarray.h: Same change.
+	* objc-private/selector.h: Same change.
+
+2010-12-21  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	PR libobjc/18764
+	* class.c (__objc_add_class_to_hash): Return YES if the class was
+	added, and NO if it already existed.
+	* init.c (__objc_init_class): If __objc_add_class_to_hash returns
+	NO, then abort the program with an error message.
+	* objc-private/runtime.h (__objc_add_class_to_hash): Updated
+	declaration.
+
+2010-12-21  Nicola Pero  <nicola.pero@meta-innovation.com>	
+
+	* init.c (_objc_load_callback): Initialize with 0.
+	(__objc_call_callback): Renamed to __objc_call_load_callback.
+	Check _objc_load_callback only once, and if it is not set, return
+	immediately.
+	(objc_send_load): Updated call to __objc_call_callback.
+	
+2010-12-21  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	PR libobjc/16110
+	* init.c (__objc_send_message_in_list): Renamed to
+	__objc_send_load_using_method_list.  Do not take an 'op' argument.
+	Register the 'load' selector if needed.
+	(__objc_send_load): Do not register the 'load' selector.  Updated
+	call to __objc_send_message_in_list.
+	(__objc_create_classes_tree): Add the class of any claimed
+	category that was loaded in the module to the list of classes for
+	which we try to execute +load.
+	
+2010-12-21  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc-private/common.h: When DEBUG is defined, include <stdio.h>.
+	Updated comments.
+	* init.c (__objc_tree_insert_class): Use %p, not %x, when printing
+	a pointer using DEBUG_PRINTF.
+	
+2010-12-21  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	PR libobjc/45953
+	* selector.c (__sel_register_typed_name): When registering a new
+	selector with the same name as an existing one, reuse the existing
+	name string.  Also updated types, casts and comments in the whole
+	function.
+
+2010-12-21  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc-private/module-abi-8.h (struct objc_symtab): Declare 'refs'
+	to be 'struct objc_selector *' and not 'SEL'.
+	* init.c (__objc_exec_class): Call
+	__objc_register_selectors_from_module instead of iterating over
+	each selector and calling __sel_register_typed_name for each.
+	* objc-private/selector.h: Declare
+	__objc_register_selectors_from_module instead of
+	__sel_register_typed_name.
+	* selector.c (__objc_register_selectors_from_module): New.
+	(__sel_register_typed_name): Made static.
+	
+2010-12-21  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* linking.m: Do not include objc/NXConstStr.h.
+
+2010-12-21  Nicola Pero  <nicola.pero@meta-innovation.com>
+	
+	* objc-private/runtime.h (DEBUG_PRINTF): Moved from here ...
+	* objc-private/common.h (DEBUG_PRINTF): To here.
+	* hash.c: Do not include objc-private/runtime.h and objc/thr.h.
+	
+2010-12-21  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* hash.c: Tidied up comments and indentation.  No code changes.
+
+2010-12-19  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	PR libobjc/47012
+	* accessors.m (objc_getProperty): If not atomic, do not
+	retain/autorelease the returned value.
+
+2010-12-19  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc-private/runtime.h (__objc_selector_max_index,
+	__objc_init_selector_tables, __objc_register_selectors_from_class,
+	__objc_register_selectors_from_list,
+	__objc_register_selectors_from_description_list): Moved to ...
+	* objc-private/selector.h: ... here.
+
+2010-12-19  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc-private/runtime.h (__objc_class_links_resolved): Removed.
+	(__objc_print_dtable_stats): Removed.
+	(__sel_register_typed_name): Removed.
+	* sendmsg.c (__objc_print_dtable_stats): Use 'void' as argument.
+	
+2010-12-19  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* init.c (__objc_exec_class): Call __objc_resolve_class_links (),
+	if appropriate, after loading the module.
+
+2010-12-19  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* sendmsg.c (method_setImplementation): Do not declare.
+
+2010-12-19  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/message.h: Updated comments.
+	* objc/runtime.h: Updated comments.
+	
+2010-12-19  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* class.c (objc_lookupClass): Renamed to objc_lookUpClass.
+	* protocols.c: Updated all calls to objc_lookupClass to call
+	objc_lookUpClass instead.
+	* sendmsg.c (objc_lookupClass): Do not declare.
+	(get_imp): Update call to objc_lookupClass to call
+	objc_lookUpClass instead.
+	* objc/runtime.h (objc_lookupClass): Renamed to objc_lookUpClass.
+
+2010-12-19  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/runtime.h (class_ivar_set_gcinvisible): Declare.
+	* sendmsg.c (_CLS_IN_CONSTRUCTION, CLS_IS_IN_CONSTRUCTION): Do not
+	define.  Updated comments.
+	
+2010-12-19  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/encoding.h: Updated comments.
+	* objc/runtime.h: Updated comments.
+	(objc_setGetUnknownClassHandler): Mark with objc_EXPORT.
+	(objc_sizeof_type): Same.
+	(objc_alignof_type): Same.
+	(objc_aligned_size): Same.
+	(objc_promoted_size): Same.
+	(objc_skip_type_qualifiers): Same.
+	(objc_skip_typespec): Same.
+	(objc_skip_offset): Same.
+	(objc_skip_argspec): Same.
+	(objc_get_type_qualifiers): Same.
+	(objc_layout_structure): Same.
+	(objc_layout_structure_next_member): Same.
+	(objc_layout_finish_structure): Same.
+	(objc_layout_structure_get_info): Same.
+	
+2010-12-19  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* init.c: Updated comments.
+	* objc/objc-api.h: Updated comments.
+	* objc/runtime.h (_objc_load_callback): Declare.
+	
+2010-12-19  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/Object.h: Include deprecated/typedstream.h and
+	deprecated/hash.h instead of typedstream.h.  Updated comments.
+
+2010-12-19  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* Makefile.in (OBJC_DEPRECATED_H): Added objc_msg_sendv.h.
+	* objc/deprecated/objc_msg_sendv.h: New.
+	* objc/message.h: Do not define retval_t, apply_t, arglist,
+	arglist_t, objc_msg_sendv, now in
+	objc/deprecated/objc_msg_sendv.h.
+	* objc/objc.h: Do not include message.h; include
+	objc/deprecated/objc_msg_sendv.h instead.  Tidied up comments.
+	* sendmsg.c: Include objc/message.h.
+	* thr.c: Include objc/message.h.
+	
+2010-12-19  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/objc-exception.h: Include objc-decls.h.  Mark all
+	functions with objc_EXPORT.
+	* objc/objc-sync.h: Same change.
+
+2010-12-19  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* Protocol.m: Moved all methods, with the exception of -isEqual:,
+	into the 'Deprecated' category.
+	* objc/Protocol.h: Removed all methods, moved to
+	objc/deprecated/Protocol.h.  Include objc/deprecated/Protocol.h.
+	* objc/deprecated/Protocol.h: New.
+	* Makefile.in (OBJC_DEPRECATED_H): Added Protocol.h.
+	
+2010-12-19  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* init.c: Include objc-private/selector.h.  Do not declare
+	__sel_register_typed_name.
+	* objc-private/selector.h (__sel_register_typed_name): Declare.
+	* selector.c: Include objc-private/selector.h.
+	
+2010-12-18  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* class.c: Tidied up comments and indentation.  No code changes.
+	* error.c: Same.
+	* exception.c: Same.
+	* init.c: Same.
+	* ivars.c: Same.
+	* memory.c: Same.
+	* objc-foreach.c: Same.
+	* objc-sync.c: Same.
+	* objects.c: Same.
+	* protocols.c: Same.
+	* sarray.c: Same.
+	* thr.c: Same.
+
+2010-12-17  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* init.c: Include objc/runtime.h and objc-private/module-abi-8.h
+	instead of objc/objc-api.h.
+	(init_check_module_version): Take a 'struct objc_module *'
+	argument instead of 'Module_t'.  Use 'struct objc_module *'
+	instead of 'Module_t'.
+	(__objc_created_classes_tree): Take a 'struct objc_module *'
+	argument instead of 'Module_t'; use 'struct objc_symtab *' instead
+	of 'Symtab_t'.
+	(__objc_call_callback): Take a 'struct objc_module *' argument
+	instead of 'Module_t'; use 'struct objc_symtab *' instead of
+	'Symtab_t' and 'struct objc_category *' instead of 'Category_t'.
+	(_objc_load_callback): Take a 'struct objc_category *' argument
+	instead of 'Category *'.
+	(class_superclass_of_class): Use objc_getClass() instead of
+	objc_lookup_class().
+	(create_tree_of_subclasses_inherited_from): Same change (also, use
+	an explicit 'if' instead of '?').
+	(objc_init_statics): Same change.
+	(objc_send_load): Same change.
+	(__objc_init_protocol): same change.
+	(__objc_send_message_in_list): Take a 'struct objc_method_list *'
+	argument instead of 'MethodList_t'.  Use 'struct objc_method *'
+	instead of 'Method_t'.
+	(__objc_send_load): Use 'struct objc_method_list *' instead of
+	'MethodList_t'.  Use sel_registerName() instead of
+	sel_register_name().
+	(__objc_exec_class): Take a 'struct objc_module *' argument
+	instead of 'Module_t'.  Use 'struct objc_symtab *' instead of
+	'Symtab_t'.  Use objc_getClass() instead of objc_lookup_class().
+	Use 'struct objc_category *' instead of 'Category_t'.
+	
+2010-12-16  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* sendmsg.c: Include objc/runtime.h instead of objc/objc-api.h.
+	Include objc-private/module-abi-8.h and objc-private/selector.h
+	instead of objc/encoding.h.
+	(objc_msg_lookup_super): Use super->super_class instead of
+	super->class.
+	(method_get_first_argument, method_get_next_argument): Declare
+	locally.
+	(class_get_instance_method): Declare before using.
+	(objc_msg_sendv): Use 'struct objc_method' instead of 'Method'.
+	(__objc_init_dispatch_tables, __objc_send_initialize): Use
+	sel_registerName() instead of sel_register_name().
+	(__objc_forward): Use sel_getName() instead of sel_get_name().
+	(objc_get_uninstalled_dtable): Use 'void' as argument.
+	* objc-private/selector.h: New.
+
+2010-12-15  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/message.h (objc_super): When using the modern API, do not
+	define Super and Super_t, and always use 'super_class' for the
+	super class field.	
+	(objc_msg_lookup_super): Updated prototype to use 'struct
+	objc_super *' instead of 'Super_t'.
+	* sendmsg.c (objc_msg_lookup_super): Updated prototype to use
+	'struct objc_super *' instead of 'Super_t'.
+
+2010-12-15  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/message.h: Update comments, reindented code and moved
+	deprecated types and functions at the end of the file.  No code
+	changes.
+
+2010-12-15  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* ivars.c (class_addIvar): Use the 'size' argument instead of
+	trying to calculate it using objc_sizeof_type().
+	* objc/runtime.h (class_addIvar): Updated comments.
+	
+2010-12-15  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* sendmsg.c: Reindented some code and tidied up comments.  No
+	actual code changes.
+	
+2010-12-14  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/Object.h: Moved all the methods, with the exception of
+	-class and -isEqual:, into ...
+	* objc/deprecated/Object.h: here.
+	* Object.m: Moved all the methods, with the exception of -class
+	and -isEqual: into the 'Deprecated' category.
+
+2010-12-14  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objects.c (object_copy): Do not #undef as we are no longer
+	including objc/objc-api.h.
+	* selector.c: Include objc/runtime.h and
+	objc-private/module-abi-8.h.  Do not include objc/objc-api.h and
+	objc/encoding.h.  Updated
+	(__objc_register_selectors_from_class): Use struct
+	objc_method_list * instead of MethodList_t.
+	(__objc_register_selectors_from_list): Use Method instead of
+	Method_t.
+	(struct objc_method_description_list): Do not define here.
+	(__objc_register_instance_methods_to_class): Use struct
+	objc_method_list * instead of MethodList_t and Method instead of
+	Method_t.
+	
+2010-12-14  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* selector.c: Reindented some code and tidied up comments.  No
+	actual code changes.
+
+2010-12-13  Iain Sandoe  <iains@gcc.gnu.org>
+
+	* encoding.c (_darwin_rs6000_special_round_type_align): New.
+	(darwin_rs6000_special_round_type_align): Adjust to use new routine.
+
+2010-12-11  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* sendmsg.c (selector_resolveClassMethod): New.
+	(selector_resolveInstanceMethod): New.
+	(__objc_resolve_class_method): New.
+	(__objc_resolve_instance_method): New.
+	(get_imp): Call __objc_resolve_class_method or
+	__objc_resolve_instance_method at the appropriate time.
+	(objc_msg_lookup): Same.
+	(class_getClassMethod): Same.	
+	(class_getInstanceMethod): Same.
+	(__objc_init_dispatch_tables): Initialize
+	selector_resolveClassMethod and selector_resolveInstanceMethod.
+	* objc/runtime.h: Updated documentation of class_getClassMethod,
+	class_getInstanceMethod and class_getMethodImplementation.
+	
+2010-12-11  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc-private/module-abi-8.h (struct objc_symtab): Updated
+	description of sel_ref_cnt and refs.
+	* objc/deprecated/struct_objc_symtab.h (objc_symtab): Same change.
+	
+2010-12-06  Dave Korn  <dave.korn.cygwin@gmail.com>
+
+	PR target/40125
+	PR lto/46695
+	* configure.ac (extra_ldflags_libobjc): Invoke ACX_LT_HOST_FLAGS.
+	* Makefile.in (lt_host_flags): Import AC_SUBST'd value.
+	* aclocal.m4: Regenerate.
+	* configure: Regenerate.
+
+2010-12-03  Matthias Klose  <doko@ubuntu.com> 
+
+	* configure.ac (VERSION): Bump the version to 3:0:0.
+	* configure: Regenerate.
+
+2010-11-23  Richard Frith-Macdonald <rfm@gnu.org>
+
+	* sendmsg.c (get_imp): Fixed call to __objc_get_forward_imp to
+	pass nil as the receiver since we don't know the receiver at this
+	point.
+	
+2010-11-18  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* ivars.c: Include stdlib.h.
+	* protocols.c: Same change.
+
+2010-10-24  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* Makefile.in (OBJC_SOURCE_FILES): Added accessors.m.
+	* accessors.m: New.
+	* init.c: Include objc-private/accessors.h.
+	(__objc_exec_class): Call __objc_accessors_init.
+	* objc-private/accessors.h: New.
+
+2010-10-17  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/message.h: Moved initial includes outside of extern "C".
+	* objc/runtime.h: Add extern "C" for Objective-C++.
+
+2010-10-17  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* init.c (objc_send_load): Do not wait for NXConstantString to be
+	registered before executing +load.  There is no point if
+	-fconstant-string-class=xxx is used when compiling all modules,
+	as is the case for almost all users.
+	* linking.m (__objc_linking): Do not try to forcefully link in
+	NXConstantString.
+
+2010-10-16  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/runtime.h: Updated comments.
+	(class_addMethod): New.
+	(class_addIvar): New.
+	(class_replaceMethod): New.
+	(objc_allocateClassPair): New.
+	(objc_registerClassPair): New.
+	(objc_disposeClassPair): New.
+	* class.c (objc_allocateClassPair): New.
+	(objc_registerClassPair): New.
+	(objc_disposeClassPair): New.
+	(class_getSuperclass): Return Nil if a class is in construction.
+	* init.c (__objc_exec_class): Call __objc_init_class.
+	(__objc_init_class): New.
+	* ivars.c (class_copyIvarList): Return NULL if class is in
+	construction.  Do not lock the runtime mutex.
+	(class_getInstanceVariable): Return NULL if class is in
+	construction.  Do not lock the runtime mutex.
+	(class_addIvar): New.
+	* sendmsg.c (class_addMethod): New.
+	(class_replaceMethod): New.
+	* objc-private/module-abi-8.h (__CLS_SETNOTINFO): New.
+	(_CLS_IN_CONSTRUCTION): New.
+	(CLS_IS_IN_CONSTRUCTION): New.
+	(CLS_SET_IN_CONSTRUCTION): New.
+	(CLS_SET_NOT_IN_CONSTRUCTION): New.
+	* objc-private/runtime.h (__objc_init_class): New.
+
+2010-10-16  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* class.c (class_getSuperclass): Call __objc_resolve_class_links
+	if the class is not resolved yet.
+	* ivars.c (class_getInstanceVariable): Use class_getSuperclass.
+	
+2010-10-16  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/runtime.h (class_getIvarLayout): New.
+	(class_getWeakIvarLayout): New.
+	(class_setIvarLayout): New.
+	(class_setWeakIvarLayout): New.
+	* ivars.c (class_getIvarLayout): New.
+	(class_getWeakIvarLayout): New.
+	(class_setIvarLayout): New.
+	(class_setWeakIvarLayout): New.	
+
+2010-10-15  Nicola Pero  <nicola.pero@meta-innovation.com>
+	
+	* objc/runtime.h (class_copyPropertyList): New.
+	(class_getProperty): New.
+	(property_getAttributes): New.
+	(property_getName): New.
+	* ivars.c (class_copyPropertyList): New.
+	(class_getProperty): New.
+	(property_getAttributes): New.
+	(property_getName): New.
+	
+2010-10-15  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc-private/runtime.h (__objc_update_classes_with_methods): New.
+	* class.c (__objc_update_classes_with_methods): New.
+	(objc_getClassList): Do not lock the class lock.
+	* methods.c (method_exchangeImplementations): New.
+	(method_setImplementation): New.
+	* objc/runtime.h (method_setImplementation): New.
+	(method_exchangeImplementations): New.
+	
+2010-10-15  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* Protocol.m: Include objc/runtime.h and
+	objc-private/module-abi-8.h instead of objc/objc-api.h.  Do not
+	repeat Protocol's instance variables.
+	(struct objc_method_description_list): Do not define here.
+	([-conformsTo:]): Reimplemented on top of protocol_conformsTo().
+	([descriptionForInstanceMethod:]): Use sel_isEqual() to compare
+	selectors directly instead of getting names and then using strcmp.
+	([descriptionForClassMethod:]): Same change.
+	([-isEqual:]): Reimplemented on top of protocol_isEqual().
+	* protocols.c (protocol_getMethodDescription): Use sel_isEqual()
+	to compare selectors directly instead of getting names and then
+	using strcmp.
+	* objc/Protocol.h: Updated comments.
+	
+2010-10-15  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* init.c (__objc_init_protocol): New function which fixes up a
+	protocol's class pointer, registers it with the runtime, register
+	all protocol selectors and registers associated protocols too.
+	(objc_init_statics): Detect if we are initializing protocols, and
+	if so, use __objc_init_protocol instead of only fixing up the
+	class pointer.
+	(__objc_init_protocls): Use __objc_init_protocol.
+	* objc-private/module-abi-8.h: Updated comments.
+	* objc-private/runtime.h
+	(__objc_register_selectors_from_description_list): New.
+	* selector.c (__objc_register_selectors_from_description_list):
+	New.  (struct objc_method_description_list): Declare.
+	* Protocol.m ([-descriptionForInstanceMethod:]): Use sel_get_name
+	when accessing the name of a method, which is now correctly a SEL.
+	([-descriptionForClassMethod:]): Same change.
+	* protocols.c (protocol_getMethodDescription): Same change.
+	* objc/runtime.h: Updated comments.
+	(sel_registerTypedName): Fixed typo in function name.
+	
+2010-10-13  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	PR libobjc/23214
+	* init.c (objc_init_statics): Do not skip the initialization of a
+	statics list if the first object has already been initialized; in
+	the case of Protocols, while the first one may have been
+	initialized, some others may not have been initialized yet.
+
+2010-10-13  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* Makefile.in (OBJC_DEPRECATED_H): Added
+	objc_get_uninstalled_dtable, objc_object_alloc.h and
+	struct_objc_static_instances.h.
+
+2010-10-13  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* encoding.c (method_copyReturnType): New.
+	(method_copyArgumentType): New.
+	(method_getReturnType): New.
+	(method_getArgumentType): New.
+	* methods.c (method_getDescription): New.
+	* objc/runtime.h (method_copyReturnType): New.
+	(method_copyArgumentType): New.
+	(method_getReturnType): New.
+	(method_getArgumentType): New.
+	(method_getDescription): New.
+	
+2010-10-12  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* encoding.c: Tidied up comments.
+	(objc_skip_variable_name): New static inline function.
+	(objc_sizeof_type): Use objc_skip_variable_name instead of copying
+	the same code over and over.
+	(objc_alignof_type): Same.
+	(objc_aligned_size): Same.
+	(objc_promoted_size): Same.
+	(objc_skip_typespec): Same.
+	(objc_layout_structure_next_member): Same.
+	(objc_skip_offset): Skip a '-' before the digits (if any).  Fixed
+	historical bug where objc_skip_offset would skip one byte even if
+	there is no offset: check that the first offset digit is actually
+	a digit before skipping it.
+	(objc_skip_type_qualifiers): Mark as inline.
+	(objc_skip_typespec): Mark as inline.	
+	
+2010-10-12  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* Makefile.in (C_SOURCE_FILES): Added methods.c.
+	* encoding.c (method_getNumberOfArguments): New.
+	(method_get_number_of_arguments): Call
+	method_getNumberOfArguments.
+	* ivars.c (ivar_getName): Check for NULL variable argument.
+	(ivar_getOffset): Check for NULL variable argument.
+	(ivar_getTypeEncoding): Check for NULL variable argument.
+	(class_copyIvarList): New.
+	* methods.c: New.
+	* protocols.c (class_copyProtocolList): Check for Nil class_
+	argument.
+	* sendmsg.c: Use 'struct objc_method *' instead of Method_t, and
+	'struct objc_method_list *' instead of MethodList_t.
+	(class_getMethodImplementation): New.
+	(class_respondsToSelector): New.
+	(class_getInstanceMethod): New.
+	(class_getClassMethod): New.
+	* objc/runtime.h: Updated comments.
+	(class_copyIvarList): New.
+	(class_getInstanceMethod): New.
+	(class_getClassMethod): New.
+	(class_getMethodImplementation): New.
+	(class_respondsToSelector): New.
+	(method_getName): New.
+	(method_getImplementation): New.
+	(method_getTypeEncoding): New.
+	(class_copyMethodList): New.
+	(method_getNumberOfArguments): New.
+	
+2010-10-12  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* class.c: Include objc/runtime.h and objc-private/module-abi-8.h
+	instead of objc/objc-api.h.
+	(objc_get_unknown_class_handler): Do not define.
+	(class_isMetaClass): New.
+	(class_getSuperclass): New.
+	(class_getVersion): New.
+	(class_setVersion): New.
+	(class_getInstanceSize): New.
+	* exceptions.c: Include objc/runtime.h instead of objc/objc-api.h.
+	(is_kind_of_exception_matcher): Use objc_getSuperclass instead of
+	objc_get_super_class.
+	(get_ttype_entry): Use objc_getRequiredClass instead of
+	objc_get_class.
+	* ivars.c (class_getClassVariable): New.
+	* objects.c: Include objc/runtime.h, objc/thr.h and
+	objc-private/module-abi-8.h instead of objc/objc-api.h
+	* objc/runtime.h (class_getClassVariable): New.
+	(class_isMetaClass): New.
+	(class_getSuperclass): New.
+	(class_getVersion): New.
+	(class_setVersion): New.
+	(class_getInstanceSize): New.
+	* objc-private/module-abi-8.h (HOST_BITS_PER_LONG): New (from
+	objc/objc-api.h)
+	(__CLS_INFO): Same.
+	(__CLS_ISINFO): Same.
+	(__CLS_SETINFO): Same.
+	(CLS_ISMETA): Same.
+	(CLS_ISCLASS): Same.
+	(CLS_ISRESOLV): Same.
+	(CLS_SETRESOLV): Same.
+	(CLS_ISINITIALIZED): Same.
+	(CLS_SETINITIALIZED): Same.
+	(CLS_GETNUMBER): Same.
+	(CLS_SETNUMBER): Same.
+
+2010-10-12  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* archive.c: Do not include objc/objc.h.
+	* class.c: Do not include objc/objc.h.
+	* encoding.c: Include objc/runtime.h, ctype.h and
+	objc-private/module-abi-8.h instead of objc/objc-api.h and
+	objc/encoding.h.
+	* error.c: Do not include objc/objc.h.
+	* gc.c: Include tconfig.h and objc/encoding.h only if
+	OBJC_WITH_GC.
+	* hash.c: Include objc/runtime.h and objc/thr.h instead of
+	objc/objc-api.h.  Do not include objc/objc.h.
+	* init.c: Do not include objc/objc.h.
+	* ivars.c: Include objc/runtime.h, objc-private/module-abi-8.h and
+	objc/thr.h instead of objc/objc-api.h.  Do not include
+	objc/objc.h.
+	* linking.m: Tidied comment.
+	* memory.c: Include objc/runtime.h instead of objc/objc-api.h.
+	Do not include objc/objc.h.
+	* objects.c: Do not include objc/objc.h.
+	* objc-sync.c: Include objc/runtime.h instead of objc/objc-api.h.
+	* protocols.c: Do not include objc/objc.h.
+	* sarray.c: Include objc/runtime.h instead of objc/objc-api.h.  Do
+	not include objc/objc.h.
+	* selector.c: Do not include objc/objc.h.
+	* sendmsg.c: Do not include objc/objc.h.	
+	* thr.c: Include objc/runtime.h instead of objc/objc-api.h.
+	Do not include objc/objc.h.
+	* objc/objc-decls.h: Reindented code.
+	* objc/runtime.h Include objc-decls.h.  Updated comments.
+	(objc_malloc): New.
+	(objc_atomic_malloc): New.
+	(objc_calloc): New.
+	(objc_realloc): New.
+	(objc_free): New.
+	* objc-private/runtime.h: Updated comments.
+	
+2010-10-12  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* Makefile.in (C_SOURCE_FILES): Added protocols.c.
+	* objc-private/protocols.h: New.
+	* protocols.c: New.
+	* init.c: Include objc-private/protocols.h.
+	(__objc_exec_class): Call __objc_protocols_init on startup.
+	(__objc_init_protocols): Call __objc_protocols_add_protocol.
+	* objc-private/runtime.h: Use (struct objc_method_list *) instead
+	of MethodList_t, and (struct objc_method *) instead of Method_t.
+	* objc/deprecated/struct_objc_class.h: Define
+	__objc_STRUCT_OBJC_CLASS_defined.
+	* objc-private/module-abi-8.h (struct
+	objc_method_description_list): New.
+	(struct objc_class): Only define if
+	__objc_STRUCT_OBJC_CLASS_defined is undefined.
+	* objc/runtime.h (class_getName): New.
+	(objc_getProtocol): New.
+	(objc_copyProtocolList): New.
+	(class_addProtocol): New.
+	(class_conformsToProtocol): New.
+	(class_copyProtocolList): New.
+	(protocol_conformsToProtocol): New.
+	(protocol_isEqual): New.
+	(protocol_getName): New.
+	(protocol_getMethodDescription): New.
+	(protocol_copyMethodDescriptionList): New.
+	(protocol_getProperty): New.
+	(protocol_copyPropertyList): New.
+	(protocol_copyProtocolList): New.
+	* class.c (class_getName): New.
+	* selector.c (sel_isEqual): New.
+	
+2010-10-12  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* selector.c (sel_getName): Return "<null selector>" for a NULL
+	argument.
+	(sel_get_name): Return 0 for a NULL argument.
+	* objc/runtime.h (sel_getName): Updated documentation.
+
+	* objc-private/hash.h (class_hash_table): Unused declaration
+	removed.
+	(module_hash_table): Same.
+	* objc/deprecated/hash.h: Same changes.
+	
+2010-10-11  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* class.c (objc_getClassList): New.
+	(objc_getRequiredClass): New.
+	(objc_getMetaClass): New.
+	(objc_lookupClass): New.
+	(objc_getClass): New.
+	(__objc_get_unknown_class_handler): New.
+	(objc_setGetUnknownClassHandler): New.
+	(objc_get_class): Use __objc_get_unknown_class_handler.
+	(objc_lookup_class): Call objc_getClass.
+	* objc/objc-api.h: Updated comment and copyright notice.
+	* objc/runtime.h: Updated comments.
+	(objc_getClass): New.
+	(objc_lookupClass): New.
+	(objc_getMetaClass): New.
+	(objc_getRequiredClass): New.
+	(objc_getClassList): New.
+	(objc_setGetUnknownClassHandler): New.
+	(objc_get_unknown_class_handler): New.
+	* objc-private/runtime.h: Use __objc_private_runtime_INCLUDE_GNU
+	instead of __objc_runtime_INCLUDE_GNU as include guard.
+	* objc-private/error.h (_objc_abort): Mark as noreturn.
+	
+2010-10-11  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* Makefile.in (C_SOURCE_FILES): Added ivars.c.
+	* ivars.c: New.
+	* objc/objc.h: Updated comments.
+	* objc/runtime.h (object_getClass): New.
+	(object_getClassName): New.
+	(object_setClass): New.
+	(class_getInstanceVariable): New.
+	(object_getIndexedIvars): New.
+	(object_getInstanceVariable): New.
+	(object_setInstanceVariable): New.
+	(object_getIvar): New.
+	(object_setIvar): New.	
+	(ivar_getName): New.
+	(ivar_getOffset): New.
+	(ivar_getTypeEncoding): New.
+	* objc-private/module-abi-8.h (struct objc_class): Added.
+	* objects.c (object_getClassName): New.
+	(object_setClass): New.
+	
+2010-10-11  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/objc.h: Updated comments.
+	* objc/objc-api.h: (object_copy): Added one argument; use a
+	#define to maintain backwards-compatibility.  Moved
+	_objc_object_alloc, _objc_object_copy, _objc_object_dispose and
+	objc_get_uninstalled_dtable into
+	objc/deprecated/objc_get_uninstalled_dtable.h and
+	objc/deprecated/objc_object_alloc.h.  Include these files.
+	* objc/deprecated/objc_get_uninstalled_dtable.h: New.
+	* objc/deprecated/objc_object_alloc.h: New.
+	* objc/runtime.h (set_getName): New.
+	(sel_getType): New.
+	(sel_getUid): New.
+	(sel_registerName): New.
+	(sel_registerTypedName): New.
+	(sel_isEqual): New.
+	(class_createInstance): New.
+	(object_copy): New.
+	(object_dispose): New.
+	* objects.c: Do not include tconfig.h.  Include gc_typed.h if
+	building the garbage collection version.
+	(__objc_object_alloc): Removed.
+	(__objc_object_copy): Removed.
+	(__objc_object_dispose): Removed.
+	(class_createInstance): New from code in class_create_instance.
+	Cast second argument of GC_malloc_explicitly_typed.  Use
+	objc_calloc.  Do not call _objc_object_alloc.
+	(class_create_instance): Call class_createInstance.
+	(object_copy): Added extraBytes argument.  Do not call
+	_objc_object_copy.
+	(object_dispose): Do not call _objc_object_dispose.
+	* memory.c (objc_free): When using garbage collection, mark the
+	argument as unused.
+	* selector.c (sel_getName): New.
+	(sel_get_name): Call sel_getName.
+	(sel_getType): New.
+	(sel_get_type): Call sel_getType.
+	(sel_registerName): New.
+	(sel_register_name): Call sel_registerName.
+	(sel_registerTypedName): New.
+	(sel_register_typed_name): Call sel_registerTypedName.
+	(sel_getUid): New.
+	(sel_get_uid): Call sel_getUid.
+	
+2010-10-10  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/objc-api.h: Define Method, Method_t, Category and
+	Category_t.  Prevent including this file at the same time as
+	objc/runtime.h.  Updated comments.
+	* objc/deprecated/struct_objc_method.h: Do not define Method,
+	Method_t.
+	* objc/deprecated/struct_objc_category.h: Do not define Category,
+	Category_t.
+	* objc-private/module-abi-8.h: New file containing a copy of all
+	the structure definitions.  Not used yet.
+	* objc/encoding.h (objc_aligned_size): Removed duplicate
+	declaration.  Updated comments.
+	* objc/runtime.h: Added Ivar, objc_property_t, Property, Method,
+	Category, struct objc_method_description, _C_ID and similar,
+	_C_CONST and similar and _F_CONST and similar.  Added
+	objc_sizeof_type, objc_alignof_type, objc_aligned_size,
+	objc_promoted_size, objc_skip_type_qualifier, objc_skip_typespec,
+	objc_skip_offset, objc_skip_argspec, objc_get_type_qualifiers,
+	struct objc_struct_layout, objc_layout_structure,
+	objc_layout_structure_next_member, objc_layout_finish_structure,
+	objc_layout_structure_get_info.  Prevent including this file at
+	the same time as objc/objc-api.h.
+	
+2010-10-10  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* Makefile.in (OBJC_DEPRECATED_H): Added struct_objc_category.h,
+	struct_objc_ivar.h, struct_objc_ivar_list.h, struct_objc_method.h,
+	struct_objc_method_list.h, struct_objc_module.h,
+	struct_objc_protocol_list.h, struct_objc_symtab.h.
+	* objc/deprecated/struct_objc_category.h: New.
+	* objc/deprecated/struct_objc_ivar.h: New.
+	* objc/deprecated/struct_objc_ivar_list.h: New.
+	* objc/deprecated/struct_objc_method.h: New.
+	* objc/deprecated/struct_objc_method_list.h: New.
+	* objc/deprecated/struct_objc_module.h: New.
+	* objc/deprecated/struct_objc_protocol_list.h: New.
+	* objc/deprecated/struct_objc_symtab.h: New.
+	* objc/deprecated/struct_objc_static_instances.h: New.
+	* objc/objc-api.h: Definitions of deprecated structures moved into
+	the above header fragment files in objc/deprecated/.  Include the
+	files instead of definition the structures here.  Updated
+	comments.
+	* objc/runtime.h: Updated comments.  Do not include objc-api.h.
+	(objc_set_enumeration_mutation_handler): Renamed to
+	objc_setEnumerationMutationHandler.
+	* objc-foreach.c (objc_set_enumeration_mutation_handler): Renamed
+	to objc_setEnumerationMutationHandler.
+	* objc/objc-exception.h (objc_set_exception_matcher): Renamed to
+	objc_setExceptionMatcher.
+	(objc_set_uncaught_exception_handler): Renamed to
+	objc_setUncaughtExceptionHandler.
+	* exception.c: Same changes.
+
+2010-10-10  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc-sync.c: Include objc-private/common.h.
+
+2010-10-10  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc-foreach.c: Include objc-private/common.h.
+	* objc/deprecated/METHOD_NULL.h: New file.
+	* objc/objc-api.h: Include deprecated/METHOD_NULL.h instead of
+	defining METHOD_NULL here.
+	* Makefile.in (OBJC_DEPRECATED_H): Added METHOD_NULL.h.
+	* Object.m ([+instancesRespondTo:]): Use (Method_t)0 instead of
+	METHOD_NULL.
+	([-respondsTo:]): Same change.
+	* objc/objc-api.h (method_get_imp): Converted it into a normal
+	function so that we can hide the internals of struct objc_method.
+	* sendmsg.c (method_get_imp): Implemented.
+
+2010-10-09  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/objc-api.h (struct objc_super, Super, Super_t,
+	objc_msg_lookup_super, objc_msg_sendv, objc_msg_forward,
+	objc_msg_forward2): Declarations moved to objc/message.h.  Include
+	message.h here.
+	* objc/message.h: Added such declarations; updated comments.
+
+2010-10-06  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	Implemented fast enumeration for Objective-C.
+	* Makefile.in (C_SOURCE_FILES): Added objc-foreach.c.
+	(OBJC_H): Added runtime.h
+	* objc-foreach.c: New file.
+	* objc/runtime.h: New file.
+	
+2010-09-30  Kai Tietz  <kai.tietz@onevision.com>
+
+	* objc/deprecated/struct_objc_class.h: Add padding
+	to avoid warning with -Wpadded.
+
+2010-09-26  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* encoding.c (objc_sizeof_type): Added support for vector type and
+	for double long types.	
+	(objc_alignof_type): Same change.
+	(objc_skip_typespec): Same change.
+	* objc/encoding.h (_C_GCINVISIBLE): Use '|' for _C_GCINVISIBLE
+	instead of '!' since '!' is already used for _C_VECTOR.
+	* objc/objc-api.h (_C_LNG_DBL): Added.
+	
+2010-09-26  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* libobjc_entry.c: File removed.
+
+2010-09-26  Kai Tietz  <kai.tietz@onevision.com>
+
+	* sendmsg.c (objc_msg_lookup): Remove inline.
+	(objc_get_uninstalled_dtable): Likewise.
+	* encoding.c (objc_skip_type_qualifiers): Likewise.
+	(objc_skip_offset): Likewise.
+	* archive.c (__objc_write_object): Likewise
+	(__objc_write_class):
+	(__objc_write_selector):
+	(objc_read_char):
+	(objc_read_unsigned_char):
+	(objc_read_short):
+	(objc_read_unsigned_short):
+	(objc_read_int):
+	(objc_read_long):
+	(__objc_read_nbyte_uint):
+	(objc_read_unsigned_int):
+	(objc_read_unsigned_long):
+	* objc/objc-decls.h (obc_EXPORT): Remove dllexport for DLL_EXPORT case.
+	(objc_EXPORT): Likewise.
+	* objc/message.h (objc-decls.h): Add include.
+	* objc/objc-api.h: Mark API by objc_EXPORT.
+	* libobjc.def (__objc_responds_to): Removed.
+
+2010-09-18  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* hash.c: Include objc-private/hash.h instead of objc/hash.h.
+
+	* objc/sarray.h: Moved into objc/deprecated/sarray.h;
+	objc/sarray.h replaced with a placeholder including the file from
+	the deprecated/ directory.
+	* objc-private/sarray.h: New file (private copy of sarray.h).
+	* hash.c: Include <assert.h> instead of "assert.h"
+	* sarray.c: Include <assert.h> instead of "assert.h".  Include
+	objc-private/sarray.h instead of objc/sarray.h.
+	* selector.c: Include objc-private/sarray.h instead of
+	objc/sarray.h.
+	* sendmsg.c: Include <assert.h>.  Include objc-private/sarray.h
+	instead of objc/sarray.h.
+	* Makefile.in (OBJC_DEPRECATED_H): Added sarray.h.	
+
+2010-09-17  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc-private/objc-list.h (list_remove_elem): Unused function
+	removed.  (list_nth): Unused function removed.  (list_find):
+	Unused function removed.  (list_lenght): Unused function removed.
+	
+2010-09-17  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/hash.h: Moved into objc/deprecated/hash.h; objc/hash.h
+	replaced with a placeholder including the file from the
+	deprecated/ directory.
+	* objc/objc-api.h: Updated includes.
+	* objc/typedstream.h: Updated includes.
+	* objc-private/hash.h: New file (private copy of hash.h).
+	* objc/objc-list.h: Moved into objc/deprecated/objc-list.h;
+	objc/objc-list.h replaced with a placeholder including the file
+	from the deprecated/ directory.
+	* objc-private/objc-list.h: New file (private copy of objc-list.h).
+	* init.c: Include objc-private/hash.h and objc-private/objc-list.h
+	instead of objc/hash.h and objc/objc-list.h.
+	* selector.c: Same change.
+	* class.c: Added include <string.h>, which used to be implicitly included
+	when hash.h was included.
+	* exception.c: Same change.
+	* objects.c: Same change.
+	* sarray.c: Same change.
+	* sendmsg.c: Same change.
+	* Makefile.in (OBJC_DEPRECATED_H): Added hash.h and objc-list.h.
+
+2010-09-14  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	Implemented objc_sync_enter() and objc_sync_exit(), which are
+	required by @synchronized() to work.
+	* objc-sync.c: New file.
+	* objc/objc-sync.h: New file.
+	* objc-private/objc-sync.h: New file.
+	* init.c (__objc_exec_class): Call __objc_sync_init() during the
+	Objective-C runtime startup.
+	* Makefile.in: Added objc-sync.c and objc-sync.h.
+	* configure.ac: Added GCC_CHECK_TLS.
+	* acinclude.m4: Include ../config/enable.m4 and ../config/tls.m4.
+	* configure: Regenerated.
+	* config.h.in: Regenerated.
+	
+2010-09-12  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* Makefile.in (%_gc.lo): New pattern rules to build the
+	garbage-collected version of the library.  Removed rules for
+	specific files that are no longer needed.  Standardized all rules.
+	(C_SOURCE_FILES, OBJC_SOURCE_FILES): New variables.
+	(OBJS, OBJS_GC): Compute these from C_SOURCE_FILES and
+	OBJC_SOURCE_FILES.
+	(INCLUDES): Removed the unused include -I$(srcdir)/objc.
+
+2010-09-12  Nicola Pero  <nicola.pero@meta-innovation.com>
+	
+	* memory.c (objc_calloc): Fixed call to GC_malloc when building
+	with Garbage Colletion.
+	
+2010-09-12  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* memory.c: Do not include objc-private/runtime.h.
+
+2010-09-12  Nicola Pero  <nicola.pero@meta-innovation.com>
+	
+	* objc/deprecated/objc_malloc.h: New file.
+	* objc/deprecated/objc_valloc.h: New file.
+	* objc/objc-api.h: Include the files instead of defining
+	objc_valloc, _objc_malloc() and similar.
+	* Makefile.in (OBJC_DEPRECATED_H): Added objc_valloc.h and
+	objc_malloc.h.
+	* memory.c: Removed the extra layer of indirection of _objc_malloc
+	and similar.
+	(objc_calloc): Use GC_malloc in the garbage-collected
+	implementation as GC_malloc returns memory that is already freed.
+	(objc_valloc): Deprecated.	
+	
+2010-09-12  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/deprecated/objc_error.h: New file.
+	* objc/objc-api.h: Include deprecated/objc_error.h instead of
+	defining objc_error and related.
+	* error.c: New file.  Added _objc_abort function which replaces
+	objc_error.  No change in functionality as they both print an
+	error and abort.
+	* misc.c: File removed.  Code moved into memory.c and error.c.
+	* memory.c: New file.
+	* objc-private/error.h: New file.
+	* archive.c: Include objc-private/error.h and use _objc_abort
+	instead of objc_error everywhere.
+	* class.c: Same change.
+	* encoding.c: Same change.
+	* init.c: Same change, and simplified init_check_module_version.
+	* memory.c: Same change.
+	* sendmsg.c:  Same change.
+	* thr.c: Same change.
+	* Makefile.in (OBJ_DEPRECATED_H): Added objc_error.h.
+	(OBJ_H): Reordered list.
+	(OBJS): Removed misc.lo, added memory.lo and error.lo.
+	(OBJS_GC): Removed misc_gc.lo, added memory_gc.lo and error_gc.lo.
+	(misc_gc.lo): Rule removed.
+	(error_gc.lo): Rule added.
+	(memory_gc.lo): Rule added.
+	
+2010-09-12  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/objc.h (__GNU_LIBOBJC__): New #define providing an easy way
+	to check the API version.  Added some comments.
+
+	* objc-private/common.h: New file.
+	* NXConstStr.m: Include objc-private/common.h.
+	* Object.m: Same change.
+	* Protocol.m: Same change.
+	* archive.c: Same change.
+	* class.c: Same change.
+	* encoding.c: Same change.
+	* exception.c: Same change.
+	* gc.c: Same change.
+	* hash.c: Same change.
+	* init.c: Same change.
+	* libobjc_entry.c: Same change.
+	* linking.m: Same change.
+	* misc.c: Same change (and added a comment).
+	* nil_method.c: Same change.
+	* objects.c: Same change.
+	* sarray.c: Same change.
+	* selector.c: Same change.
+	* sendmsg.c: Same change.
+	* thr.c: Same change.
+
+2010-09-11  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/objc-api.h: Removed obsolete #ifdef for NeXTSTEP.
+
+2010-09-11  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* archive.c: Removed not needed includes.
+	* class.c: Same change.
+	* hash.c: Same change.
+	* misc.c: Same change.
+	* nil_method.c: Same change.
+	* objects.c: Same change.
+	* sarray.c: Same change.
+	* sendmsg.c: Same change.
+	* thr.c: Same change.
+
+2010-09-11  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/runtime.h: Moved to objc-private/runtime.h.  Do not include
+	all the objc/*.h files.
+	* objc-private/runtime.h: New file.
+	* archive.c: Include objc-private/runtime.h (and required objc/*.h
+	files) instead of objc/runtime.h.
+	* class.c: Same change.
+	* hash.c: Same change.
+	* init.c: Same change.
+	* misc.c: Same change.
+	* nil_method.c: Same change.
+	* objects.c: Same change.
+	* sarray.c: Same change.
+	* selector.c: Same change.
+	* sendmsg.c: Same change.
+	* thr.c: Same change.
+	
+2010-09-11  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/deprecated/struct_objc_selector.h: New file.  Definition of
+	'struct objc_selector' and 'sel_eq' moved here.
+	* objc/deprecated/struct_objc_protocol.h: New file.  Definition of
+	'struct objc_procotol' moved here.
+	* objc/deprecated/struct_objc_class.h: New file.  Definition of
+	'struct objc_class' moved here.
+	* objc/deprecated/MetaClass.h: New file.  Definition of MetClass
+	moved here.
+	* objc/deprecated/STR.h: New file.  Definition of STR moved here.	
+	* objc/message.h: New file.  Definitions for relval_t, apply_t,
+	arglist, arglist_t and objc_msg_lookup were moved here.
+	* objc/objc.h: Include the above files instead of defining the
+	corresponding structs, types and functions here.  Added new opaque
+	definitions for SEL and Class.  Use Class and not 'struct
+	objc_class *' in the definition of 'struct objc_object'.
+	Commented all types defined in the file.  Removed special
+	definition of BOOL as 'int' on __vxworks; use 'unsigned char'
+	there as well.
+	* objc/deprecated/objc-unexpected-exception.h: Renamed to
+	objc_unexpected_exception.h.
+	* objc/objc-api.h: Updated include of
+	objc-unexpetected-exception.h
+	* objc/objc-exception.h: Updated comments.
+	* Makefile.in (OBJC_H, OBJC_DEPRECATED_H): Added the new header
+	files.  Reindented list of files.
+	
+2010-09-10  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/objc-api.h (objc_trace): Unused variable removed.
+
+2010-09-10  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/deprecated: New directory.
+	* objc/deprecated/README: New file.
+	* objc/README: New file.
+	* objc/typedstream.h: Moved into objc/deprecated/typedstream.h;
+	objc/typedstream.h replaced with a placeholder including the file
+	from the deprecated/ directory.
+	* objc/deprecated/objc-unexpected-exception.h: New file with the
+	definition of _objc_unexpected_exception.	
+	* objc/objc-api.h: Include deprecated/objc-unexcepted-exception.h
+	instead of defining _objc_unexpected_exception.
+	* objc/deprecated/Object.h: New file with the deprecated Object
+	methods in a 'Deprecated' category.
+	* objc/Object.h Include deprecated/Object.h instead of defining
+	the deprecated methods.
+	* Object.m: Moved deprecated methods into 'Deprecated' category.
+	* objc-private: New directory.
+	* objc-private/README: New file.
+	* Makefile.in (OBJC_DEPRECATED_H): New variable.
+	(install-headers): Create installation directory for
+	OBJC_DEPRECATED_H headers, and install them.
+
+2010-09-10  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/objc-exception.h: Fixed include of objc.h.
+	
+2010-09-08  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/objc-exception.h: New file.
+	* exception.c (objc_set_uncaught_exception_handler): Implemented.
+	(objc_set_exception_matcher): Implemented.
+	(objc_exception_throw): Use the uncaught exception handler if set.
+	(PERSONALITY_FUNCTION): Use the exception matcher instead of the
+	hardcoded isKindOf.
+	(isKindOf): Renamed to is_kind_of_exception_matcher.  Tidied code
+	up.  Removed segmentation fault when value is 'nil'.
+	* objc/objc-api.h (_objc_unexpected_exception): Mark as
+	deprecated.
+	* Makefile.in (exception.lo, exception_gc.lo): Use
+	-Wno-deprecated-declarations when compiling.
+	(OBJC_H): Added objc-exception.h
+
+2010-09-08  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* objc/typedstream.h: Deprecate all functions in the file.  This
+	file is obsolete.
+	* objc/Object.h ([+streamVersion:], [-read:], [-write:],
+	[-awake]): Documented that these methods are deprecated.  Added a
+	brief description of the Object class and its relationship to the
+	NSObject class.
+	* Makefile.in: Compile archive.c and Object.m with
+	-Wno-deprecated-declarations.
+
+2010-09-08  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	Removed obsolete intermediate threading layer.
+	* thr.c: Use __gthread_objc_xxx functions directly instead of
+	__objc_thread_xxx ones.
+	* objc/thr.h: Removed prototypes of no longer existing
+	__objc_thread_xxx functions.
+	* Makefile.in: Removed thr-objc.lo.
+	* thr-dce.c: File removed.
+	* thr-decosf1.c: File removed.
+	* thr-irix.c: File removed.
+	* thr-mach.c: File removed.
+	* thr-objc.c: File removed.
+	* thr-os2.c: File removed.
+	* thr-posix.c: File removed.
+	* thr-pthreads.c: File removed.
+	* thr-rtems.c: File removed.
+	* thr-single.c: File removed.
+	* thr-solaris.c: File removed.
+	* thr-vxworks.c: File removed.
+	* thr-win32.c: File removed.
+	* README.threads: File removed.
+	* THREADS.MACH: File removed.
+	* THREADS: Updated.
+
+2010-09-07  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* Object.m (MAX_CLASS_NAME_LEN): Unused define removed.
+
+2010-09-06  Iain Sandoe  <iains@gcc.gnu.org>
+
+	* encoding.c: Add TARGET_ALIGN_NATURAL definition for m64 powerpc darwin.
+	Add a comment as to why, update FIXME comments.
+
+2010-09-06  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+	* makefile.dos: Obsolete file removed.
+	
+2010-04-02  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* aclocal.m4: Regenerate.
+
+2010-03-23  Dave Korn  <dave.korn.cygwin@gmail.com>
+
+	PR libobjc/30445
+	* configure.ac (extra_ldflags_libobjc): Define appropriately for
+	Cygwin and MinGW hosts.
+	* Makefile.am (libobjc_s.a): Remove dead pre-libtool target.
+	(libobjc.dll): Likewise.
+	* configure: Regenerate.
+
+2009-12-05  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* configure: Regenerate.
+
+2009-11-28  Jakub Jelinek  <jakub@redhat.com>
+
+	* sarray.c (sarray_free): Use old_buckets variable.
+	* encoding.c (objc_layout_structure_next_member): Remove unused
+	bfld_type_size variable.
+
+2009-08-24  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* configure.ac (AC_PREREQ): Bump to 2.64.
+
+2009-08-22  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* aclocal.m4: Regenerate.
+	* configure: Regenerate.
+	* config.h.in: Regenerate.
+
+2009-08-22  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* Makefile.in (LIBTOOL): Add $(LIBTOOLFLAGS).
+
+2009-07-30  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* Makefile.in (AUTOCONF, ACLOCAL, ACLOCAL_AMFLAGS, aclocal_deps):
+	New variables.
+	($(srcdir)/configure, $(srcdir)/aclocal.m4): New rules.
+
+2009-07-30  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* configure.ac (_AC_ARG_VAR_PRECIOUS): Use m4_rename_force.
+
+2009-04-09  Nick Clifton  <nickc@redhat.com>
+
+	* sendmsg.c: Change copyright header to refer to version 3 of
+	the GNU General Public License with version 3.1 of the GCC
+	Runtime Library Exception and to point readers at the COPYING3
+	and COPYING3.RUNTIME files and the FSF's license web page.
+	* NXConstStr.m: Likewise.
+	* Object.m: Likewise.
+	* Protocol.m: Likewise.
+	* archive.c: Likewise.
+	* class.c: Likewise.
+	* encoding.c: Likewise.
+	* exception.c: Likewise.
+	* gc.c: Likewise.
+	* hash.c: Likewise.
+	* init.c: Likewise.
+	* libobjc_entry.c: Likewise.
+	* linking.m: Likewise.
+	* misc.c: Likewise.
+	* nil_method.c: Likewise.
+	* objc/NXConstStr.h: Likewise.
+	* objc/Object.h: Likewise.
+	* objc/Protocol.h: Likewise.
+	* objc/encoding.h: Likewise.
+	* objc/hash.h: Likewise.
+	* objc/objc-api.h: Likewise.
+	* objc/objc-decls.h: Likewise.
+	* objc/objc-list.h: Likewise.
+	* objc/objc.h: Likewise.
+	* objc/runtime.h: Likewise.
+	* objc/sarray.h: Likewise.
+	* objc/thr.h: Likewise.
+	* objc/typedstream.h: Likewise.
+	* objects.c: Likewise.
+	* sarray.c: Likewise.
+	* selector.c: Likewise.
+	* thr-dce.c: Likewise.
+	* thr-decosf1.c: Likewise.
+	* thr-irix.c: Likewise.
+	* thr-mach.c: Likewise.
+	* thr-objc.c: Likewise.
+	* thr-os2.c: Likewise.
+	* thr-posix.c: Likewise.
+	* thr-pthreads.c: Likewise.
+	* thr-rtems.c: Likewise.
+	* thr-single.c: Likewise.
+	* thr-solaris.c: Likewise.
+	* thr-vxworks.c: Likewise.
+	* thr-win32.c: Likewise.
+	* thr.c: Likewise.
+	* libobjc.def: Change copyright header to refer to version 3 of
+	the GNU General Public License and to point readers at the COPYING3
+	file and the FSF's license web page.
+	* makefile.dos: Likewise.
+
+2009-04-09  Jakub Jelinek  <jakub@redhat.com>
+
+	* Makefile.in: Change copyright header to refer to version
+	3 of the GNU General Public License and to point readers at the
+	COPYING3 file and the FSF's license web page.
+	* configure.ac: Likewise.
+
+2009-03-12  Richard Frith-Macdonald  <rfm@gnu.org>
+	    David Ayers  <ayers@fsfe.org>
+
+	PR libobjc/27466
+	* objc/objc-api.h (_objc_unexpected_exception): Declare
+	new hook.  Update copyright dates.
+	* exception.c (objc_exception_throw): Use hook.  Update
+	copyright dates.
+	* libobjc.def (_objc_unexpected_exception): Export hook.
+	Update copyright dates.
+	
+2009-03-01  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* configure: Regenerate.
+
+2008-12-18  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* configure: Regenerate.
+
+2008-11-21  Kai Tietz  <kai.tietz@onevision.com>
+
+	*  Object.m (errno): Replaced by errno.h include.
+	(compare): Cast self to id to prevent warning on comparison.
+	* objc/objc.h (BOOL): Prevent redeclaration of BOOL, if it is
+	already there.
+	* sendmsg.c (__objc_print_dtable_stats): Remove type warnings.
+	* thr-win32.c (__objc_thread_detach): Remove type warning.
+	(__objc_thread_id): Likewise.
+	* thr.c (__objc_thread_detach_functiont): Add __builtin_trap ()
+	for noreturn.
+
+2008-09-26  Peter O'Gorman  <pogma@thewrittenword.com>
+            Steve Ellcey  <sje@cup.hp.com>
+
+	* configure: Regenerate for new libtool.
+	* config.h.in: Regenerate for new libtool.
+
+2008-07-18  Matthias Klose  <doko@ubuntu.com> 
+
+	* Makefile.in: Ignore missing ../boehm-gc/threads.mk. 
+
+2008-07-18  Matthias Klose  <doko@ubuntu.com> 
+
+	* Makefile.in: Include ../boehm-gc/threads.mk. 
+	(OBJC_BOEHM_GC_LIBS): Define, (libobjc_gc$(libsuffix).la): Use it.
+
+2008-07-06  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* Makefile.in (install-info): New stub target.
+
+2008-06-17  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* configure: Regenerate.
+
+2008-06-14  Kai Tietz  <kai.tietz@onevision.com>
+
+	* exception.c (PERSONALITY_FUNCTION): Remove extra decrement
+	if HAVE_GETIPINFO is not defined.
+
+2008-06-10  Kai Tietz  <kai.tietz@onevision.com>
+
+	* Object.m (compare): Add type id.
+	* objc/Object.h: Likewise.
+	* archive.c (objc_read_class): Use size_t to extend version to be
+	size of pointer scalar width.
+	* sendmsg.c (rtx): Undefine it before redefinition.
+	(__objc_print_dtable_stats): Cast arguments to long as intended.
+
+2008-05-30  Julian Brown  <julian@codesourcery.com>
+
+	* exception.c (__objc_exception_class): Initialise as constant
+	array for ARM EABI. Change macro to static const for non-ARM EABI.
+	(ObjcException): Add note about structure layout. Remove landingPad
+	and handlerSwitchValue for ARM EABI.
+	(get_ttype_entry): Add __ARM_EABI_UNWINDER__ version
+	of function.
+	(CONTINUE_UNWINDING): Define for ARM EABI/otherwise cases.
+	(PERSONALITY_FUNCTION): Use ARM EABI-specific arguments, and add
+	ARM EABI unwinding support.
+	(objc_exception_throw): Use memcpy to initialise exception class.
+
+2008-05-25  Alan Modra  <amodra@bigpond.net.au>
+
+	* encoding.c (strip_array_types): Rename from get_inner_array_type.
+	(rs6000_special_round_type_align): Update.
+
+2008-05-09  Julian Brown  <julian@codesourcery.com>
+
+	* Makefile.in (LTLDFLAGS): New.
+	(libobjc$(libsuffix).la, libobjc_gc$(libsuffix).la): Use above.
+
+2008-04-18  Paolo Bonzini  <bonzini@gnu.org>
+
+	PR bootstrap/35457
+	* aclocal.m4: Regenerate.
+	* configure: Regenerate.
+
+2008-01-24  David Edelsohn  <edelsohn@gnu.org>
+
+	* configure: Regenerate.
+
+2007-10-14  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* configure.ac: Don't run config-ml.in directly.
+	(multilib_arg): New.
+	* configure: Regenerated.
+
+2007-08-06  Andrew Pinski  <pinskia@gmail.com>
+
+	PR libobjc/30731
+	* exception.c (parse_lsda_header): Use _uleb128_t/_sleb128_t instead
+	of _Unwind_Word for variables which are used in
+	read_uleb128/read_sleb128.
+	(PERSONALITY_FUNCTION): Likewise.
+
+2007-07-05  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* aclocal.m4: Regenerated.
+
+2007-06-03  Andrew Pinski  <andrew_pinski@playstation.sony.com>
+
+	* configure.ac: Fix a typo in *-*-darwin clause.
+	* configure: Regenerated.
+
+2007-06-02  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* configure.ac: Fix a typo.
+	* configure: Regenerated.
+
+2007-06-02  Paolo Bonzini  <bonzini@gnu.org>
+
+	* configure: Regenerate.
+
+2007-06-01  Andrew Pinski  <andrew_pinski@playstation.sony.com>
+
+	* Makefile.in: Replace all uses of libext with libsuffix.
+	* configure.ac: Likewise.
+	* configure: Regenerate.
+
+	Revert:
+	* Makefile.in: Remove all uses of $(libext).
+
+2007-05-23  Andrew Pinski  <andrew_pinski@playstation.sony.com>
+
+	* Makefile.in: Remove all uses of $(libext).
+
+2007-05-23  Steve Ellcey  <sje@cup.hp.com>
+
+	* configure: Regenerate.
+	* aclocal.m4: Regenerate.
+
+2007-04-21  Andrew Ruder  <andy@aeruder.net>
+
+	* sendmsg.c (__objc_get_forward_imp): Call
+	__objc_msg_forward2 for real.
+
+2007-04-09  Andrew Ruder  <andy@aeruder.net>
+
+	* sendmsg.c: Added __objc_msg_forward2, a hook that allows
+	external libraries to provide a function that returns the real
+	forwarding function based on both the selector and the receiver.
+	* objc/objc-api.h: Define __objc_msg_forward2.
+
+2007-03-01  Brooks Moses  <brooks.moses@codesourcery.com>
+
+	* Makefile.in: Add dummy install-pdf target.
+
+2007-02-18  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
+
+	* objc/objc-list.h (list_free): Add keyword 'inline' to avoid
+	unused warning.
+	
+2006-10-31  Geoffrey Keating  <geoffk@apple.com>
+
+	* encoding.c (darwin_rs6000_special_round_type_align): New.
+
+2006-10-14  Geoffrey Keating  <geoffk@apple.com>
+
+	* Makefile.in: Use multi_basedir instead of toplevel_srcdir.
+	* configure.ac: Use multi.m4 from aclocal rather than custom
+	code.  Use multi_basedir instead of toplevel_srcdir.
+	* aclocal.m4: Regenerate.
+	* configure: Regenerate.
+
+2006-10-10  Brooks Moses  <bmoses@stanford.edu>
+
+	* Makefile.in: Added empty "pdf" target.
+
+2006-07-18  Paolo Bonzini  <bonzini@gnu.org>
+
+	* configure: Regenerate.
+
+2006-05-23  Carlos O'Donell  <carlos@codesourcery.com>
+
+	* Makefile.in: Add install-html target. Add install-html to .PHONY
+
+2006-02-21  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
+
+	PR libobjc/26309
+	* thr-objc.c (_XOPEN_SOURCE): Don't define on Tru64 UNIX.
+
+2006-01-24  David Ayers  <d.ayers@inode.at>
+
+	PR libobjc/9751
+	* gc.c (class_ivar_set_gcinvisible): Replace strncpy with memcpy
+	and insure the new strings are '\0' termintated.
+
+2006-01-24  David Ayers  <d.ayers@inode.at>
+
+	PR libobjc/13946
+	* configure.ac: Add include directives for --enable-objc-gc.
+	* Makefile.in: Ditto.
+	* configure: Regenerate.
+
+	* gc.c (__objc_class_structure_encoding): Increment the used bytes
+	instead of the local pointer to them.
+
+2005-12-14  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	PR objc/25360
+	* objc/objc-api.c (_C_COMPLEX): New define.
+	* encoding.c (objc_sizeof_type): Handle _C_Complex.
+	(objc_alignof_type): Likewise.
+	(objc_skip_typespec): Likewise.
+
+2005-12-15  David Ayers  <d.ayers@inode.at>
+
+	PR libobjc/14382
+	* README (+load,+initialize): Fix documentation to reflect
+	intended and implemented semantics for +load and +initialize.
+	
+2005-12-12  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	* encoding.c (TYPE_FIELDS): Fix to skip over just _C_STRUCT_B and
+	the name.
+	(get_inner_array_type): Fix to skip over _C_ARY_B and size.
+	(rs6000_special_round_type_align): Update for the ABI fix.
+	(objc_layout_finish_structure): Correct the encoding which is passed to
+	ROUND_TYPE_ALIGN.
+
+2005-12-11  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	PR libobjc/25347
+	* encoding.c (objc_sizeof_type): Don't handle _C_UNION_B special
+	but use the struct layout functions.
+	(objc_alignof_type): Likewise.
+	(objc_layout_structure): Handle _C_UNION_B also.
+	(objc_layout_structure_next_member): Likewise.
+	(objc_layout_finish_structure): Likewise.
+
+2005-12-11  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	PR libobjc/25346
+	* objc/objc-api.h (_C_BOOL): New define.
+	* encoding.c (objc_sizeof_type): Handle _C_BOOL.
+	(objc_alignof_type): Likewise.
+	(objc_skip_typespec): Likewise.
+
+2005-11-20  David Ayers  <d.ayers@inode.at>
+
+	PR libobjc/19024
+	* objc/hash.h: Remove deprecated hash API.
+	* hash_compat.c: Remove.
+	* Makefile.in: Remove reference to hash_compat.c.
+
+	* configure.ac (VERSION): Bump library version to 2:0:0.
+	* configure: Regenerate.
+
+2005-11-09  Alexandre Oliva  <aoliva@redhat.com>
+
+	PR other/4372
+	* thr-objc.c (_XOPEN_SOURCE): Define.
+
+2005-10-07  Ulrich Weigand  <uweigand@de.ibm.com>
+
+	PR libobjc/23612
+	* objc/objc-api.h (struct objc_ivar): Move definition to
+	global scope.
+
+2005-09-04  Andrew Pinski  <pinskia@physics.uc.edu>
+            Rasmus Hahn  <rassahah@neofonie.de>
+
+	PR libobjc/23108
+	* archive.c (objc_write_type): Correct the element offset.
+	(objc_read_type): Likewise.
+
+2005-08-17  Kelley Cook  <kcook@gcc.gnu.org>
+
+	* All files: Update FSF address.
+
+2005-08-13  Marcin Koziej  <creep@desk.pl>
+            Andrew Pinski  <pinskia@physics.uc.edu>
+
+	PR libobjc/22492
+	* exception.c (PERSONALITY_FUNCTION): Fix the PC with finally.
+
+2005-08-13  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	* Makefile.in (extra_ldflags_libobjc): New.
+	(libobjc$(libext).la): Add extra_ldflags_libobjc to the link line.
+	(libobjc_gc$(libext).la): Likewise.
+	* configure.ac (extra_ldflags_libgfortran): Set for *-darwin* to
+	"-Wl,-single_module".
+	* configure: Regenerate.
+	* linking.m (_objcInit): Remove.
+
+2005-07-26  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	PR libobjc/22606
+	* Makefile.in (ALL_CFLAGS): Add -fexceptions.
+
+2005-06-08  David Ayers  <d.ayers@inode.at>
+
+	* objc/NXConstStr.h, objc/Object.h, objc/Protocol.h,
+	objc/encoding.h, objc/hash.h, objc/objc-api.h,
+	objc/runtime.h, objc/sarray.h, objc/thr.h, 
+	objc/typedstream.h: Do not include Objective-C headers as
+	system headers.
+
+2005-06-07  David Ayers  <d.ayers@inode.at>
+
+	* archive.c, init.c, selector.c: Include hash.h.
+	* archive.c, class.c, encoding.c, gc.c, hash.c, hash_compat.c,
+	init.c, misc.c, nil_method.c, objects.c, sarray.c, selector.c,
+	sendmsg.c, thr-dce.c, thr-decosf1.c, thr-irix.c, thr-mach.c,
+	thr-objc.c, thr-os2.c, thr-posix.c, thr-pthreads.c, thr-rtems.c,
+	thr-single.c, thr-solaris.c, thr-vxworks.c, thr-win32.c, thr.c:
+	Include Objective-C headers with quotes and objc/ directory
+	prefix.
+
+2005-05-19  Richard Henderson  <rth@redhat.com>
+
+	* exception.c: Revert last change.
+
+2005-05-19  David Ayers  <d.ayers@inode.at>
+
+	* exception.c: Include tsystem.h for unwind.h.
+
+2005-05-09  Mike Stump  <mrs@apple.com>
+
+	* configure: Regenerate.
+
+2005-04-12  Mike Stump  <mrs@apple.com>
+
+	* configure: Regenerate.
+
+2005-03-21  Zack Weinberg  <zack@codesourcery.com>
+
+	* Makefile.in: Set gcc_version here.
+	* configure.ac: Do not invoke TL_AC_GCC_VERSION.  Adjust quoting
+	in definition of toolexeclibdir so that $(gcc_version) is expanded
+	by the Makefile.
+	* aclocal.m4, configure: Regenerate.
+
+2005-03-03  David Ayers  <d.ayers@inode.at>
+
+	* objc/hash.h (OBJC_IGNORE_DEPRECATED_API): Update deprecated
+	version reference.  Correct typo.
+
+2005-03-02  David Ayers  <d.ayers@inode.at>
+
+	PR libobjc/19024
+	* Makefile.in (OBJS): Add hash_compat.lo.
+	(OBJS_GC): Add hash_compat_gc.lo.
+	(hash_compat_gc.lo): New target and rule.
+	* objc/hash.h (hash_new, hash_delete, hash_add, hash_remove)
+	(hash_next, hash_value_for_key, hash_is_key_in_hash)
+	(hash_ptr, hash_string, compare_ptrs, compare_strings): Prefix
+	with objc_.  Add deprecated non prefixed inlined versions.
+	(OBJC_IGNORE_DEPRECATED_API): New macro to hide deprecated
+	declarations.
+	* hash.c (hash_new, hash_delete, hash_add, hash_remove, hash_next)
+	(hash_value_for_key, hash_is_key_in_hash): Prefix with objc_ and
+	update callers.
+	* hash_compat.c: New file.
+	* archive.c: Update callers.
+	* init.c: Likewise.
+	* selector.c: Likewise.
+	* libobjc.def: Add objc_ versions of hash functions.
+
+2005-02-28  Andrew Pinski <pinskia@physics.uc.edu>
+
+	PR libobjc/20252
+	* Makefile.in (GTHREAD_FLAGS): Remove.
+	(ALL_CFLAGS): Remove usage of GTHREAD_FLAGS.
+	* thr-objc.c: Include config.h.
+	* configure.ac: Instead of looking at GCC's makefile, figure out if
+	GTHREAD_FLAGS should be defined by looking at the `thread model'
+	of the current gcc.
+	* configure: Regenerate.
+	* config.h.in: Regenerate.
+
+2005-02-28  Paolo Bonzini  <bonzini@gnu.org>
+
+	PR bootstrap/17383
+	* configure.ac: Call GCC_TOPLEV_SUBDIRS.
+	(Determine CFLAGS for gthread): Use $host_subdir.
+	* configure: Regenerate.
+	* Makefile.in (host_subdir): New.
+	(INCLUDES): Use it.
+
+2004-12-20  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	PR libobjc/12035
+	* gc.c: Remove definition of LOGWL, modWORDSZ, and divWORDSZ since
+	they are not used.
+	Include limits.h and stdlib.h.
+	Define BITS_PER_WORD.
+
+2004-12-12  Alexander Malmberg  <alexander@malmberg.org>
+
+	* selector.c (__objc_init_selector_tables): Add missing void to
+	definition.
+
+2004-12-02  Richard Sandiford  <rsandifo@redhat.com>
+
+	* configure.ac: Use TL_AC_GCC_VERSION to set gcc_version.
+	* configure, aclocal.m4: Regenerate.
+
+2004-11-29  Kelley Cook  <kcook@gcc.gnu.org>
+
+	* configure: Regenerate for libtool change.
+
+2004-11-25  Kelley Cook  <kcook@gcc.gnu.org>
+
+	* configure: Regenerate for libtool reversion.
+
+2004-11-24  Kelley Cook  <kcook@gcc.gnu.org>
+
+	* configure: Regenerate for libtool change.
+
+2004-11-24  Kelley Cook  <kcook@gcc.gnu.org>
+
+	* aclocal.m4, config.h.in: Regenerate.
+
+2004-10-08  Mike Stump  <mrs@apple.com>
+	    Andrew Pinski  <pinskia@physics.uc.edu>
+
+	* aclocal.m4: Rename to ...
+	* acinclude.m4: here and also use m4_include instead of sinclude.
+	* aclocal.m4: Regenerate.
+	* configure: Regenerate.
+	* configure.ac: Add AM_MAINTAINER_MODE and AM_PROG_CC_C_O.
+	* Makefile.in (configure): Add @MAINT@ infront of configure.ac
+
+2004-10-08  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	* archive.c: Fix all the warnings about passing unsigned char*
+	to char* and the other way too.
+
+2004-09-16  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	PR libobjc/16448
+	* exception.c: Include config.h
+	(objc_exception_throw): Change _GLIBCXX_SJLJ_EXCEPTIONS to
+	SJLJ_EXCEPTIONS.
+	* configure.ac: Find out what exception handling code we use.
+	* configure: Regenerate.
+	* config.h.in: New file, regenerate.
+
+2004-09-16  Andrew Pinski  <apinski@apple.com>
+
+	* encoding.c (ALTIVEC_VECTOR_MODE): Define a bogus macro.
+
+2004-08-28  Nathanael Nerode  <neroden@gcc.gnu.org>
+
+	* configure.ac: Switch from _GCC_TOPLEV_NONCANONICAL_TARGET to
+	ACX_NONCANONICAL_TARGET.
+	* configure: Regenerate.
+
+2004-08-13  Ziemowit Laski  <zlaski@apple.com>
+
+	* objc/sarray.h: Hoist include of assert.h near the top of file,
+	and mark the remainder of the file 'extern "C"'.
+
+2004-08-13  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	* objc/Object.h: Move includes out of extern "C" blocks.
+	* objc/encoding.h: Likewise.
+	* objc/hash.h: Likewise.
+	* objc/objc-api.h: Likewise.
+	* objc/runtime.h: Likewise.
+	* objc/sarray.h: Likewise.
+	* objc/typedstream.h: Likewise.
+
+2004-08-12  Ziemowit Laski  <zlaski@apple.com>
+
+	* objc/NXConstStr.h: Update copyright date; bracket with
+	'extern "C"' for C++ use; make include syntax consistent
+	by using <...> instead of "..."; hoist <objc/...> includes
+	above the 'extern "C"' block.
+	* objc/Object.h: Likewise.
+	* objc/Protocol.h: Likewise.
+	* objc/encoding.h: Likewise.
+	* objc/hash.h: Likewise.
+	* objc/runtime.h: Likewise.
+	* objc/sarray.h: Likewise.
+	* objc/thr.h: Likewise.
+	* objc/typedstream.h: Likewise.
+	* objc/objc-api.h: Add 'extern "C"' block for C++ use.
+	(objc_static_instances): For C++ case, do away with
+	zero-sized array.
+	(objc_method): Hoist definition to file scope.
+	(_objc_load_callback, _objc_object_alloc, class_get_class_method,
+	class_get_instance_method, class_create_instance,
+	class_get_class_name, class_get_instance_size,
+	class_get_meta_class, class_get_super_class, class_get_version,
+	class_is_class, class_is_meta_class, class_set_version,
+	class_get_gc_object_type, class_ivar_set_gcinvisible,
+	get_imp): Rename 'class' parameter to '_class'.
+	* objc/objc-list.h: Add 'extern "C"' block for C++ use.
+	* objc/objc.h: Update copyright date.
+	(arglist_t): Provide a union tag.
+
+2004-07-22  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	* thr.c (__objc_thread_detach_function): Do not mark as volatile
+	but instead use the attribute noreturn.
+
+2004-06-28  Zack Weinberg  <zack@codesourcery.com>
+
+	* encoding.c: Rename target_flags with a #define to avoid
+	conflict with a prior declaration.
+
+2004-06-24  Andrew Pinski  <apinski@apple.com>
+
+	* objc/encoding.h: Wrap the functions with extern "C" for C++
+	mode.
+	* objc/hash.h: Likewise.
+	* objc/objc-api.h: Likewise.
+	* objc/objc-list.h: Likewise.
+	* objc/runtime.h: Likewise.
+	* objc/sarray.h: Likewise.
+	* objc/thr.h: Likewise.
+	* objc/typedstream.h: Likewise.
+
+
+2004-06-21  Nick Clifton  <nickc@redhat.com>
+
+	* encoding.c (BITS_PER_UNIT): Define if a definition is not
+	provided.
+
+2004-06-20  Alexander Malmberg  <alexander@malmberg.org>
+
+	* Makefile.in (exception.lo): Remove $(OBJC_GCFLAGS).
+	(exception_gc.lo): New.
+	(OBJS_GC): Add exception_gc.lo.
+
+2004-06-17  Richard Henderson  <rth@redhat.com>
+
+	* exception.c: New file.
+	* Makefile.in (exception.lo): New.
+	(OBJS): Add it.
+
+2004-06-14  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	* linking.m (_objcInit): New empty function
+	for Darwin only.
+
+2004-06-11  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	* configure.ac: Support --enable-shared=libobjc.
+	* configure: Regenerate.
+
+	PR libobjc/15901
+	* configure.ac: Do not disable shared by default.
+	* configure: Regenerate.
+
+2004-06-03  Nicola Pero  <n.pero@mi.flashnet.it>
+
+	* Protocol.m ([-isEqual:]): Small optimizations returning
+	immediately if the argument is equal to self, and accessing
+	the argument's name directly if it's a protocol.
+
+2004-06-03  David Ayers  <d.ayers@inode.at>
+
+	* Protocol.m ([-isEqual:]): Test the class of the argument.
+
+2004-05-25  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	* configure.ac (includedir): Rename to ...
+	(includedirname).
+	* Makefile.in: s/includedir/includedirname/.
+
+	PR target/11572
+	* configure.ac (includedir): Set to "include"
+	except for Darwin.
+	(libext) Set to empty except for Darwin.
+	* configure: Regenerate
+	* Makefile.in: s/libobjc.la/libobjc$(libext).la/g.
+	s/include/$(includedir)/g.
+
+2004-05-25  Daniel Jacobowitz  <drow@false.org>
+
+	* Makefile.in: Add .NOEXPORT.
+
+2004-05-25  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	Merge from the libobjc-branch
+	2004-02-09  Andrew Pinski  <pinskia@physics.uc.edu>
+
+		* Makefile.in (OBJC_H): Change objc-deps.h to objc-decls.h.
+
+	2004-02-03  Andrew Pinski  <pinskia@physics.uc.edu>
+
+		* Makefile.in (OBJC_H): Add objc-deps.h.
+
+	2004-01-27  Nicola Pero  <n.pero@mi.flashnet.it>
+
+		* Protocol.m ([-conformsTo:]): If the argument is nil, return NO.
+		([-hash], [-isEqual:]): New methods.
+
+	2004-01-27  Richard Frith-Macdonald <rfm@gnu.org>
+
+		* sarray.c (sarray_free): Add a better comment.
+
+	2004-01-27  Adam Fedor  <fedor@gnu.org>
+
+		* hash.c (hash_add): Cast cachep to int.
+		* selector.c (__sel_register_typed_name): Cast
+		soffset_decode to int.
+
+	2004-01-27  Alexander Malmberg  <alexander@malmberg.org>
+
+		* selector.c: Rename register_selectors_from_list to
+		__objc_register_selectors_from_list. Update caller.
+		(__objc_register_selectors_from_list): Lock __objc_runtime_mutex
+		while registering selectors. Use __sel_register_typed_name instead
+		of sel_register_typed_name. Check for NULL method_name:s.
+		(pool_alloc_selector): New function.
+		(__sel_register_typed_name): Use pool_alloc_selector to allocate
+		selector structures.
+		* sendmsg.c (class_add_method_list): Use
+		__objc_register_selectors_from_list.
+		* objc/runtime.h: Add __objc_register_selectors_from_list.
+
+	2004-01-25  Adam Fedor  <fedor@gnu.org>
+		    Nicola Pero  <n.pero@mi.flashnet.it>
+		    Andrew Pinski  <pinskia@physics.uc.edu>
+
+		* objc/objc-decls.h: New file.
+		* objc/objc-api.h (_objc_lookup_class): Mark as export.
+		(_objc_load_callback): Likewise.
+		(_objc_object_alloc): Likewise.
+		(_objc_object_copy): Likewise.
+		(_objc_object_dispose): Likewise.
+
+	2004-01-25  Andrew Pinski  <pinskia@physics.uc.edu>
+
+		* archive.c: s/__inline__/inline
+		* sendmsg.c: Likewise.
+
+		* encoding.c: Remove FIXME about the warning
+		about unused variable.
+		* sendmsg.c: Add a FIXME comment saying that
+		this should be using libffi.
+
+		* Makefile.in (LIBTOOL): Use @LIBTOOL@ now as it works.
+
+
+2004-05-13  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	* archive.c (objc_read_class): Initialize class_name.
+	(objc_read_selector): Initialize selector_name.
+
+2004-05-09  Richard Sandiford  <rsandifo@redhat.com>
+
+	* Makefile.in (toolexecdir): Remove trailing space.
+
+2004-04-15  Nathanael Nerode  <neroden@gcc.gnu.org>
+
+	PR libobjc/14948
+	* configure.ac: De-precious CC so multilibs work.
+	* configure: Regenerate.
+
+2004-04-14  Nathanael Nerode  <neroden@gcc.gnu.org>
+
+	* configure.ac: Restore toolexecdir.
+	* Makefile.in: Restore toolexecdir.
+	* configure: Regenerate.
+
+2004-04-09  Nathanael Nerode  <neroden@gcc.gnu.org>
+
+	* configure.ac: Remove (unused) glibcpp_prefixdir.
+	* configure: Regenerate.
+
+	* configure.in: Rename to configure.ac.
+	* Makefile.in: Update to match.
+
+	* Makefile.in: Remove toolexecdir, glibcpp_toolexecdir (unused).
+	Replace glibcpp_toolexeclibdir with toolexeclibdir.
+	* configure.in: Remove glibcpp_toolexecdir (unused).
+	Replace glibcpp_toolexeclibdir with toolexeclibdir.  Don't generate
+	config.h or stamp-h (unused).  Move one comment to the right place.
+	* configure: Regenerate.
+	* config.h.in: Remove (unused).
+
+	* config.h.in: Regenerate with autoheader.
+
+	* Makefile.in: Remove (unused) gcc_version_trigger.
+	* configure.in: Remove (unused) glibcpp_builddir.  Don't AC_SUBST
+	gcc_version_trigger.
+	* configure: Regenerate.
+
+	* configure.in: Switch to modern style for AC_INIT, AC_OUTPUT.
+	Sort file into sections.  Remove dnl where appropriate.  Fix
+	other style issues.
+	* configure: Regenerate.
+
+	* configure.in: Replace old AC_PROG_CC hack with new one.
+	Define toplevel_srcdir in terms of srcdir, not top_srcdir (there
+	are no subdirectory output files, so this is fine).  Change prereq
+	to autoconf 2.59.
+	* aclocal.m4: Include ../config/no-executables.m4.
+	* configure: Regenerate with autoconf 2.59.
+
+	* configure.in: Improve comments on gthread_cflags.  Improve m4
+	quotation, and replace 'if test' with 'case', for --enable-objc-gc.
+	* configure: Regenerate.
+
+	* configure.in: Move PACKAGE and VERSION settings up top.  Remove
+	unused call to AC_PROG_LN_S.  Default RANLIB to ':'.  Remove
+	redundant checks for values of RANLIB, AR, INSTALL.
+	* configure: Regenerate.
+
+	* configure.in: Clean up handling of
+	--enable-version-specific-runtime-libs and related variables;
+	replace 'if test' with 'case' where reasonable.  Fix comments.
+	Remove useless libstdcxx_interface.
+	* configure: Regenerate.
+
+	* configure.in: Use _GCC_TOPLEV_NONCANONICAL_TARGET.
+	Replace uses of target_alias with target_noncanonical.
+	* aclocal.m4: Include ../config/acx.m4.
+	* configure: Regenerate.
+	* Makefile.in: Replace uses of target_alias with target_noncanonical.
+	Fix copyright statement.
+
+	* configure.in: Hand-inline bulky, confusing macros from
+	aclocal.m4.  Replace references to "GNU Objective C" with "GCC".
+	Update copyright notice.  Remove stuff for automake, which isn't
+	used in this directory.  Remove emacs local variables.
+	* aclocal.m4: Remove hand-inlined macros.  Update copyright notice.
+	* configure: Regenerate.
+
+2004-03-16  Manfred Hollstein  <mh@suse.com>
+
+	* Makefile.in, configure.in, configure: Update copyright years.
+
+2004-03-15  Manfred Hollstein  <mh@suse.com>
+
+	* Makefile.in (LIBOBJC_VERSION, LIBOBJC_GC_VERSION): Use
+	definition from configure.in.
+	* configure.in (PACKAGE): Add definition.
+	(VERSION): Add definition; substitute it in output files.
+	* configure: Re-generate.
+
+2004-03-05  Ziemowit Laski  <zlaski@apple.com>
+
+	* objc/hash.h (hash_string, compare_strings):
+	Add type-casts to make Objective-C++ happy.
+	* objc/typedstream.h (objc_get_stream_class_version):
+	Rename parameter from 'class' to 'class_name' to make
+	Objective-C++ happy.
+
+2004-03-01  Michael Matz  <matz@suse.de>
+
+	* Makefile.in (ALL_CFLAGS): Add -fno-strict-aliasing.
+
+2004-02-06  Ziemowit Laski  <zlaski@apple.com>
+
+	* objc/objc-api.h (objc_super): The 'class' field shall
+	be named 'super_class' #ifdef __cplusplus.
+
+2004-01-17  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	PR target/10781
+	* encoding.c (rs6000_special_round_type_align): Define.
+
+2004-01-14  Adam Fedor  <fedor@gnu.org>
+
+	PR libobjc/12155
+	* selector.c (__objc_register_instance_methods_to_class): Free
+	new_list if not used.
+
+2004-01-09  Andrew Ruder  <aeruder@ksu.edu>
+
+	PR libobjc/11904
+	* sarray.c (sarray_free): Free array->is_copy_of latter.
+
+2003-12-01  Zack Weinberg  <zack@codesourcery.com>
+
+	PR 11433
+	* Protocol.m (descriptionForInstanceMethod): Don't dereference
+	instance_methods if it's NULL.
+	(descriptionForClassMethod): Likewise for class_methods.
+
+2003-10-24  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
+
+	* Makefile.in (runtime-info.h): Remove -Wp.
+
+2003-10-21  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
+
+	* Makefile.in (CC1OBJ): Remove.
+	(runtime-info.h): Invoke $(CC) so all MULTIFLAGS are handled
+	correctly.
+	Use .m extension for temporary file.
+	Remove assembler temp file.
+
+2003-10-20  Joseph S. Myers  <jsm@polyomino.org.uk>
+
+	* objc/hash.h (hash_string): Don't use a cast as an lvalue.
+
+2003-10-17  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
+
+	* Makefile.in (runtime-info.h): Use MULTIFLAGS.
+
+2003-09-09  Alan Modra  <amodra@bigpond.net.au>
+
+	* configure: Regenerate.
+
+2003-08-27  Alexander Malmberg  <alexander@malmberg.org>
+
+	* Makefile.in, aclocal.m4: Update to $(libdir)/gcc/ instead of
+	(libdir)/gcc-lib/ when installing.
+	* configure: Regenerate.
+
+Thu Jul 10 10:27:43 2003  Nicola Pero  <n.pero@mi.flashnet.it>
+
+	libobjc/9969
+	* sendmsg.c (get_imp): Fixed rare threading problem.
+	(__objc_responds_to): Similar fixes.
+	(objc_msg_lookup): Similar fixes.
+	(__objc_init_install_dtable): Lock the runtime before checking if the
+	table is installed.
+
+2003-05-23  Nathanael Nerode  <neroden@gcc.gnu.org>
+
+	* hash.c, init.c, libobjc.def, libobjc_entry.c, linking.m,
+	makefile.dos, misc.c, nil_method.c, objects.c, sarray.c,
+	selector.c, sendmsg.c, thr-dce.c, thr-decosf1.c, thr-irix.c,
+	thr-mach.c, thr-objc.c, thr-os2.c, thr-posix.c, thr-pthreads.c,
+	thr-rtems.c, thr-single.c, thr-solaris.c, thr-vxworks.c,
+	thr-win32.c, thr.c: Replace "GNU CC" with "GCC".
+	* Makefile.in, NXConstStr.m, Object.m, Protocol.m, archive.c,
+	class.c, encoding.c, gc.c, objc/NXConstStr.h, objc/Object.h,
+	objc/Protocol.h, objc/encoding.h, objc/hash.h, objc/objc-api.h,
+	objc/objc-list.h, objc/objc.h, ocjc/runtime.h, objc/sarray.h,
+	objc/thr.h, objc/typedstream.h: Replace "GNU CC" with "GCC".
+
+Tue May 13 14:56:03 2003  Richard Frith-Macdonald <rfm@gnu.org>
+			  Nicola Pero  <n.pero@mi.flashnet.it>
+
+	libobjc/10742
+	* init.c (class_superclass_of_class): New function.
+	(create_tree_of_subclasses_inherited_from): Use it.
+	(__objc_tree_insert_class): Likewise.
+	(class_is_subclass_of_class): Likewise.
+
+2003-04-11  David Chad  <davidc@freebsd.org>
+	    Loren J. Rittle  <ljrittle@acm.org>
+
+	libobjc/8562
+	* objc/hash.h (hash_string): Constify correctly.
+	(compare_ptrs): Use direct compare.
+	* objc/objc-list.h (list_nth): Rename index to indx to avoid shadow.
+	* objc/sarray.h: Global rename index to indx to avoid shadow.
+
+2003-03-12  Andreas Schwab  <schwab@suse.de>
+
+	* aclocal.m4 (GLIBCPP_EXPORT_INSTALL_INFO): Avoid trailing /. in
+	glibcpp_toolexeclibdir.
+	* configure: Rebuilt.
+
+2003-02-20  Alexandre Oliva  <aoliva@redhat.com>
+
+	* configure.in: Propagate ORIGINAL_LD_FOR_MULTILIBS to
+	config.status.
+	* configure: Rebuilt.
+
+2003-01-27  Alexandre Oliva  <aoliva@redhat.com>
+
+	* aclocal.m4 (glibcpp_toolexeclibdir): Instead of
+	$(MULTISUBDIR), use `$CC -print-multi-os-directory`, unless
+	version_specific_libs is enabled.
+	* configure: Rebuilt.
+
+2003-01-09  Christian Cornelssen  <ccorn@cs.tu-berlin.de>
+
+	* Makefile.in (FLAGS_TO_PASS): Also pass DESTDIR.
+	(install-libs, install-headers): Prepend $(DESTDIR) to
+	destination paths in all (un)installation commands.
+
+2002-12-02  Zack Weinberg  <zack@codesourcery.com>
+
+	* thr-objc.c: Include coretypes.h and tm.h.
+
+2002-12-01  Zack Weinberg  <zack@codesourcery.com>
+
+	* encoding.c, sendmsg.c: Include coretypes.h and tm.h.
+
+2002-11-26  Nathanael Nerode  <neroden@gcc.gnu.org>
+
+	* configure.in: Remove skip-this-dir support.
+	* configure: Regenerate.
+
+2002-09-22  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* Makefile.in (all): Fix multilib parallel build.
+
+Thu Sep 12 12:44:37 2002  Nicola Pero  <n.pero@mi.flashnet.it>
+
+	* sendmsg.c (nil_method): Declare not to take a variable number of
+	args.
+	(objc_msg_lookup): Cast nil_method to IMP before returning it.
+	(objc_msg_lookup_super): The same.
+
+2002-09-10  Jan Hubicka  <jh@suse.cz>
+
+	* nil_method.c (nil_method): No longer defined with variable
+	arguments.
+
+2002-07-02  Rodney Brown  <rbrown64@csc.com.au>
+
+	* objc/encoding.h: Fix formatting.
+	* objc/hash.h: Likewise.
+	* objc/objc-api.h: Likewise.
+	* objc/runtime.h: Likewise.
+	* objc/thr.h: Likewise.
+	* archive.c: Likewise.
+	* class.c: Likewise.
+	* encoding.c: Likewise.
+	* gc.c: Likewise.
+	* hash.c: Likewise.
+	* init.c: Likewise.
+	* misc.c: Likewise.
+	* nil_method.c: Likewise.
+	* objects.c: Likewise.
+	* sarray.c: Likewise.
+	* selector.c: Likewise.
+	* sendmsg.c: Likewise.
+	* thr-mach.c: Likewise.
+	* thr.c: Likewise.
+
+2002-06-25  DJ Delorie  <dj@redhat.com>
+
+	* aclocal.m4 (GLIBCPP_CONFIGURE): Split out
+	GLIBCPP_TOPREL_CONFIGURE.
+	* configure.in: Call it before AC_CANONICAL_SYSTEM.
+	* configure: Regenerate.
+
+2002-06-21  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* Object.m (forward, read, write): Fix unused parameter warnings.
+	* encoding.c: Include <stdlib.h>.
+	(target_flags): Mark with attribute unused.
+	(atoi): Delete.
+	* runtime.h (__objc_selector_max_index): Change to unsigned int.
+	(__objc_generate_gc_type_description): Prototype.
+	* selector.c (__objc_selector_max_index): Change to unsigned int.
+
+Mon Jun 17 18:37:42 2002  Nicola Pero  <n.pero@mi.flashnet.it>
+
+	* sendmsg.c (__objc_get_forward_imp): Fix warning by making sure
+	we always have a return value: if __objc_msg_forward does not
+	supply a forwarding implementation, return the default
+	__builtin_apply based one.
+
+2002-06-15  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* Object.m: Fix signed/unsigned warning.
+	* Protocol.m: Likewise.
+	* archive.c: Always include stdlib.h.
+	(objc_read_short, objc_read_unsigned_short, objc_read_int,
+	objc_read_long, __objc_read_nbyte_uint, __objc_read_nbyte_ulong):
+	Fix signed/unsigned warning.
+	(objc_write_type, objc_read_type, objc_write_types,
+	objc_read_types): Ensure ctype 8-bit safety.
+	(__objc_no_write, __objc_no_read): Mark unused parameters.
+	* class.c (class_table_setup): Specify void arg.
+	* encoding.c (atoi, objc_sizeof_type, objc_alignof_type,
+	objc_skip_typespec, objc_skip_offset,
+	objc_layout_structure_next_member): Ensure ctype 8-bit safety.
+	(objc_layout_structure_next_member): Ensure variables are
+	initialized.
+	* gc.c (__objc_generate_gc_type_description,
+	class_ivar_set_gcinvisible): Mark unused parameters.
+	* init.c (__objc_send_load, __objc_destroy_class_tree_node): Mark
+	unused parameters.
+	(__objc_init_protocols) Fix signed/unsigned warning.
+	* nil_method.c (nil_method): Mark unused parameters.
+	* thr.h (objc_thread_callback): Specify void arg.
+	* sarray.c (sarray_new, sarray_realloc, sarray_free): Fix
+	signed/unsigned warning.
+	(sarray_free): Fix formatting.
+	* selector.c (sel_types_match): Ensure ctype 8-bit safety.
+	* sendmsg.c (__objc_init_install_dtable) Mark unused parameters.
+
+2002-06-09  Andreas Jaeger  <aj@suse.de>
+
+	* encoding.c (objc_layout_structure_next_member): Remove unused
+	variable.
+
+2002-05-20  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* Makefile.in (SHELL): Set to @SHELL@.
+	(WARN_CFLAGS): New.
+	(ALL_CFLAGS): Add $(WARN_CFLAGS).
+
+2002-05-16  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
+
+	* aclocal.m4: Allow for PWDCMD to override hardcoded pwd.
+	* configure: Regenerate.
+
+2002-05-08  Alexandre Oliva  <aoliva@redhat.com>
+
+	* configure.in (ORIGINAL_LD_FOR_MULTILIBS): Preserve LD at
+	script entry, and set LD to it when configuring multilibs.
+	* configure: Rebuilt.
+
+2002-04-19  David O'Brien  <obrien@FreeBSD.org>
+
+	* encoding.c (MAX, MIN, ROUNDING): #undef before defining.
+
+2002-04-09  Hans-Peter Nilsson  <hp@bitrange.com>
+
+	PR objc/6107
+	* objc/objc-api.h (struct objc_protocol_list): Change type of
+	member count from int to size_t.
+
+2002-02-11  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>
+
+	PR libobjc/4039
+	* aclocal.m4: Replace with version copied from libstdc++-v3.
+	* configure.in: Update for changes to aclocal and Makefile.
+	* configure: Regenerate.
+	* Makefile.in: Correct install of multilibs and shared libs, use
+	INSTALL_DATA for include files.
+
+Mon Dec 17 17:02:12 2001  Nicola Pero  <nicola@brainstorm.co.uk>
+
+	* init.c (__objc_exec_class): Fixed bug in the loop on unclaimed
+	categories - when an unclaimed category was found, the loop was
+	doing two steps forward instead of one, so that in certain cases
+	it was failing to properly load all the categories.  (Reported
+	with fix by Alexander Malmberg <alexander@malmberg.org>).
+
+2001-11-14  Aldy Hernandez  <aldyh@redhat.com>
+
+	* encoding.c: Add target_flags.
+
+2001-11-07  Aldy Hernandez  <aldyh@redhat.com>
+
+	 * objc/objc-api.h (_C_VECTOR): New.
+
+	 * encoding.c (VECTOR_TYPE): New.
+
+Mon Oct 29 21:29:21 2001  Nicola Pero  <n.pero@mi.flashnet.it>
+
+	* class.c: Rewritten the class table to use optimized, lock-free
+	lookup.  This more than doubles the speed of class method
+	invocations.  (class_table_setup), (class_table_insert),
+	(class_table_replace), (class_table_get_safe),
+	(class_table_next), (class_table_print),
+	(class_table_print_histogram): New functions.
+	(__objc_init_class_tables): Use class_table_setup.
+	(__objc_add_class_to_hash): Use class_table_get_safe and
+	class_table_insert.  (objc_lookup_class), (objc_get_class): Do not
+	assert the existence of the table; do not lock the runtime; use
+	class_table_get_safe.  (objc_next_class): Use class_table_next.
+	(__objc_resolve_class_links): Use class_table_next.
+	(class_pose_as): Use class_table_replace.
+
+2001-09-10  Ovidiu Predescu  <ovidiu@cup.hp.com>
+
+	* gc.c: Removed the DEBUG declaration.
+
+Wed Jul 18 12:48:56 2001  Nicola Pero  <n.pero@mi.flashnet.it>
+
+	* thr.c (objc_mutex_lock): Invoke __objc_thread_id directly,
+	rather than through objc_thread_id, to save a function call.
+	(objc_mutex_trylock, objc_mutex_unlock, objc_condition_wait):
+	Ditto.
+
+Mon Jul 16 12:15:00 2001  Nicola Pero  <n.pero@mi.flashnet.it>
+
+	* objc/objc-api.h (object_is_class): Fixed - buggy code was trying
+	to cast an id to a Class, which can not be done.  Make the check
+	by using CLS_ISMETA on the class pointer instead.
+	(object_is_meta_class): Similar fix.
+
+2001-06-09  Alexandre Oliva  <aoliva@redhat.com>, Stephen L Moshier  <moshier@mediaone.net>
+
+	* configure.in (AC_EXEEXT): Work around in case it expands to
+	nothing, as in autoconf 2.50.
+	* acinclude.m4: Likewise.
+	* configure: Rebuilt.
+
+2001-06-08  Nicola Pero  <n.pero@mi.flashnet.it>
+
+	* THREADS: Explain that when we compile libobjc inside GCC, we
+	always use thr-objc.c as a backend, which uses GCC's thread code.
+
+2001-06-06  Richard Frith-Macdonald  <rrfm@gnu.org>
+
+	* init.c (__objc_send_message_in_list): When setting a new entry
+	in __objc_load_methods use the method IMP as key, but check to see
+	if the method is in the hashtable by looking at the IMP also.
+	Also ... call the method after adding it to the hashtable rather
+	than before ... thus preventing an obscure possibility of infinite
+	recursion if a +load method itself loads a subclass.
+
+2001-05-25  Ovidiu Predescu  <ovidiu@cup.hp.com>
+
+	* init.c (__objc_send_message_in_list): When setting a new entry
+	in __objc_load_methods use the method name as key, not the method
+	IMP (reported by Richard Frith-Macdonald <richard@brainstorm.co.uk>).
+
+2001-05-09  Joseph S. Myers  <jsm28@cam.ac.uk>
+
+	* objc-features.texi: Move to ../gcc/objc.texi.
+	* fdl.texi: Remove.
+	* Makefile.in: Don't generate documentation from
+	objc-features.texi.
+
+2001-05-01  Mark Mitchell  <mark@codesourcery.com>
+
+	* fdl.texi: New file.
+	* objc-features.texi: Simplify.
+	* Makefile.in: Adjust accordingly.
+
+2001-04-30  Mark Mitchell  <mark@codesourcery.com>
+
+	* objc-features.texi: Use the GFDL.
+
+Wed Mar 21 04:44:58 EST 2001  John Wehle  (john@feith.com)
+
+	* encoding.c (REAL_TYPE): Define.
+
+2001-03-19  David Edelsohn  <edelsohn@gnu.org>
+
+	* encoding.c (TYPE_MODE): Define.
+
+2001-03-14  Nicola Pero  <n.pero@mi.flashnet.it>
+
+	* thr.c (objc_thread_add): New function.
+	(objc_thread_remove): Ditto.
+	* objc/thr.h: Declare them.
+	* libobjc.def: Mention them.
+
+2001-02-28  Ovidiu Predescu  <ovidiu@cup.hp.com>
+
+	* objc-features.texi: Document the @compatibility_alias compiler
+	directive (description from Nicola Pero <n.pero@mi.flashnet.it>).
+
+Fri Feb 23 18:12:00 2001  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
+
+	* sendmsg.c (__objc_forward): Delete strlen() declaration.
+
+2001-02-08  Geoffrey Keating  <geoffk@redhat.com>
+
+	* configure.in: Don't run AC_PROG_CC_WORKS or AC_EXEEXT, because
+	we're not interested in the result and they might fail.
+	* configure: Regenerated.
+
+2001-01-12  Joseph S. Myers  <jsm28@cam.ac.uk>
+
+	* objc-features.texi: Use @email.
+
+2001-01-12  Joseph S. Myers  <jsm28@cam.ac.uk>
+
+	* sendmsg.c (__objc_print_dtable_stats): Don't use #ifdef inside
+	printf.
+
+2000-01-11  Richard Earnshaw  <rearnsha@arm.com>
+
+	* encoding.c (STRUCTURE_SIZE_BOUNDARY): Redefine in a way that
+	determines the value dynamically.
+
+Wed Jan  3 00:49:10 2001  Ovidiu Predescu  <ovidiu@cup.hp.com>
+
+	* sendmsg.c: Added __objc_msg_forward, a hook that allows external
+	libraries to provide a function that returns the real forwarding
+	function. This can alleviate problems __builtin_apply() and
+	friends have on various platforms. (Solution suggested by Helge
+	Hess.)
+
+	* objc/objc-api.h: Define __objc_msg_forward.
+
+	* sendmsg.c: Define gen_rtx_REG.
+
+2000-12-06      Ralf Corsepius <corsepiu@faw.uni-ulm.de>
+
+	* thr-rtems.c: New file. Stub to compile.
+
+2000-09-06  Alexandre Oliva  <aoliva@redhat.com>
+
+	* configure: Rebuilt with new libtool.m4.
+
+Tue Aug 15 00:38:56 2000  Ovidiu Predescu  <ovidiu@cup.hp.com>
+
+	* configure.in: Create a config.h file. Check for <sched.h>.
+	* configure: Regenerate.
+
+	* config.h.in: Check for <sched.h>.
+
+2000-08-14  Zack Weinberg  <zack@wolery.cumb.org>
+
+	* configure: Regenerate after change to ../libtool.m4.
+
+2000-08-14  Andreas Schwab  <schwab@suse.de>
+
+	* objc-features.texi (Top): Move @menu at end of node.
+
+2000-08-11  Manfred Hollstein  <manfredh@redhat.com>
+
+	* objc-features.texi: Move @node Top before @menu.
+
+Sun Aug  6 23:27:49 2000  Ovidiu Predescu  <ovidiu@cup.hp.com>
+
+	* objc-features.texi: Documented the new -fconstant-string-class
+	option.
+
+Sun Aug  6 22:51:16 2000  Ovidiu Predescu  <ovidiu@cup.hp.com>
+
+	* thr-posix.c: Integrated Chris Ball's <cball@fmco.com> changes to
+	improve the Posix thread support for Objective-C.
+
+2000-08-04  Zack Weinberg  <zack@wolery.cumb.org>
+
+	* aclocal.m4: Replace copy of ../libtool.m4 with
+	sinclude(../libtool.m4).
+
+Fri Jul 28 08:58:02 2000  Nicola Pero  <nicola@brainstorm.co.uk>
+
+	* configure.in: Added libtool support; build shared libraries
+	if --enable-shared was passed on command line.
+	* Makefile.in: Modified most compilation commands to use libtool.
+	* aclocal.m4: New symbolic link to the ../libtool.m4, from the
+	libtool distribution.
+
+Sat Jul 29 00:10:21 2000  Ovidiu Predescu  <ovidiu@cup.hp.com>
+
+	* sarray.c, Object.m: Removed the explicit prototypes for strlen
+	and memcpy on 64-bit platforms (Suggested by Rodney Brown
+	<rdb@cup.hp.com>).
+
+2000-05-12  H.J. Lu  (hjl@gnu.org)
+
+	* Makefile.in (GTHREAD_FLAGS): New.
+	(ALL_CFLAGS): Add $(GTHREAD_FLAGS).
+	(OBJC_THREAD_FILE): Changed to thr-objc.
+
+	* configure.in (GTHREAD_FLAGS): New, check and replace it for
+	Makefile.
+	(OBJC_THREAD_FILE): Removed.
+
+	* thr-objc.c: New.
+
+2000-07-13  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* objc/hash.h: Include string.h.
+
+2000-04-15  David Edelsohn  <edelsohn@gnu.org>
+
+	* Object.m (strlen): 64-bit PowerPC is a 64bit platform as well.
+
+2000-04-12  Jakub Jelinek  <jakub@redhat.com>
+
+	* Object.m (strlen): Provide prototype on all 64bit platforms,
+	not only alpha.
+	* sarray.c (memcpy): Likewise.
+	* encoding.c (objc_layout_finish_structure): Don't use
+	ROUND_TYPE_ALIGN on sparc.
+
+	* encoding.c (objc_layout_structure_next_member): Do the whole
+	procedure even for the first member, so that we get correct
+	alignment.
+
+2000-03-29  Zack Weinberg  <zack@wolery.cumb.org>
+
+	* objc/Protocol.h, objc/objc-list.h: Change #endif labels to
+	comments.
+
+2000-02-23  Zack Weinberg  <zack@wolery.cumb.org>
+
+	* Makefile.in: Add -DIN_TARGET_LIBS to ALL_CFLAGS.
+
+Thu Sep 23 07:19:12 1999   Chris Ball <cball@fmco.com>
+
+	* thr-posix.c (__objc_mutex_deallocate): made deallocate work.
+
+Tue Sep 21 07:47:10 1999  Jeffrey A Law  (law@cygnus.com)
+
+	* Makefile.in (gc.o, gc_gc.o): Do not pass -fgnu-runtime to
+	the compiler when building C code.
+
+Fri Aug  6 23:32:29 1999  Daniel Jacobowitz <drow@drow.them.org>
+
+	* Makefile.in (FLAGS_TO_PASS): Include prefix, exec_prefix,
+	libdir, libsubdir and tooldir.
+
+Mon Jun 21 05:40:15 1999  John David Anglin <dave@hiauly1>
+
+	* init.c (__objc_force_linking): Make global.
+
+Thu May 20 03:20:59 1999  Jeffrey A Law  (law@cygnus.com)
+
+	* configure.in (AC_EXEEXT): Remove call.
+	(compiler_name): Explicitly check with no extension and .exe
+	extension.
+	* configure: Regenerate.
+
+Sun Apr 25 01:15:34 1999  Mumit Khan  <khan@xraylith.wisc.edu>
+
+	* Makefile.in (CC1OBJ): Define in terms of CC.
+	(runtime-info.h): Use.
+
+Fri April 8 08:21:07 1999 Ovidiu Predescu <ovidiu@cup.hp.com>
+
+	* objc-features.texi: Updated the URL to Boehm's GC page.
+
+Fri Mar 26 23:41:07 1999 Ovidiu Predescu <ovidiu@cup.hp.com>
+
+	* archive.c (__objc_code_char, __objc_write_char): Explicitly specify
+	the char as being signed (patch from Daniel Jacobowitz
+	<drow@false.org>).
+
+Wed Mar 24 22:41:28 1999  Mumit Khan  <khan@xraylith.wisc.edu>
+
+	* configure.in (AC_PREREQ): Update to 2.13.
+	(AC_EXEEXT): Call to find possible file extension.
+	(compiler_name): Use.
+	* configure: Regenerate.
+
+Wed Jan 27 02:31:01 1999  Jeffrey A Law  (law@cygnus.com)
+
+	* Makefile.in (ALL_CFLAGS): Add -DIN_GCC.
+
+Tue Jan  5 01:38:53 1999  Jeffrey A Law  (law@cygnus.com)
+
+	* configure.in (thread_file): Correct and simplify code to find
+	the thread file.
+	* configure: Rebuilt.
+
+1998-11-26  Manfred Hollstein  <manfred@s-direktnet.de>
+
+	* configure.in (compiler_name): Add check to detect if this
+	language's compiler has been built.
+	* configure: Regenerate.
+
+Mon Nov 23 16:50:28 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	*  configure.in: Use AC_PREREQ(2.12.1).
+
+Thu Nov 19 20:33:37 1998  Jeffrey A Law  (law@cygnus.com)
+
+	* Makefile.in (runtime-info.h): Avoid GNU make extensions.
+
+Sun Nov  8 17:46:14 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* Makefile.in (INCLUDES): Add -I$(srcdir)/$(MULTISRCTOP)../include.
+
+Thu Oct 22 14:34:06 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* configure.in: Use AC_CONFIG_AUX_DIR($topsrcdir).
+
+Sat Oct 17 05:21:31 1998  Ovidiu Predescu  <ovidiu@slip.net>
+
+	* objc-features.texi (Top): Changed the email address.
+	* objc-features.texi (Garbage Collection): Use @uref instead of @url.
+
+Mon Oct 11 21:25:27 1998  Ovidiu Predescu  <ovidiu@slip.net>
+
+	* encoding.c: Redefine get_inner_array_type to get the first entry
+	in the structure.
+
+Thu Oct  8 12:21:14 1998  Richard Frith-Macdonald <richard@brainstorm.co.uk>
+
+	* encoding.c (objc_skip_type_qualifiers): Handle _C_BYREF.
+	(objc_get_type_qualifiers): Similarly.
+	* objc/encoding.h (_C_BYREF): Define.
+	(_F_BYREF): Define.
+
+1998-10-07  David S. Miller  <davem@pierdol.cobaltmicro.com>
+
+	* objc/sarray.h: Make boffset be an unsigned long when sparc so it
+	works out on 64-bit systems.
+
+Tue Oct  6 20:32:06 1998  Alexandre Oliva  <oliva@dcc.unicamp.br>
+
+	* Makefile.in (INCLUDES): Make it multilib-friendly.
+
+Fri Oct  2 07:12:14 1998  H.J. Lu  (hjl@gnu.org)
+
+	* Makefile.in (INCLUDES): Add -I$(srcdir)/../gcc.
+
+Thu Oct  1 22:33:03 1998 Robert Lipe  <robertl@dgii.com>
+			 Jeffrey A Law  (law@cygnus.com)
+
+	* Makefile.in (INCLUDES): Reference gcc via $MULTIBUILDTOP.
+	(FLAGS_TO_PASS): Added.
+	(runtime-info.h): Reference cc1ibj via $MULTIBUILDTOP.
+
+	* archive.c: Change config.h to tconfig.h.
+
+	* configure.in: Find gcc's object directory even for multilibs.
+
+Wed Sep 30 18:17:17 1998  Robert Lipe  <robertl@dgii.com>
+
+	* configure.in: Escape ^ in grep string.
+	* configure: Rebuilt.
+
+Wed Sep 30 09:14:52 1998  Jeffrey A Law  (law@cygnus.com)
+
+	* All .h files pushed down into the objc/ subdirectory.
+	* Makefile.in (copy_headers): Corresponding changes.
+	* configure.in (AC_INIT): Corresponding changes.
+	* configure: Rebuilt.
+
+1998-09-30  Ben Elliston  <bje@cygnus.com>
+	    Jeff Law	  <law@cygnus.com>
+
+	* Makefile.in: Rewrite.
+
+	* configure.in: Likewise.
+
+	* configure: Regenerate.
+
+	* All .c files.  Remove "objc" prefix when including objc header
+	files.  Include tconfig.h, not ../tconfig.h.
+
+Mon Sep 21 23:27:10 1998  Ovidiu Predescu <ovidiu@slip.net>
+
+	* encoding.c (TREE_TYPE, ARRAY_TYPE): Define.
+	(get_inner_array_type): Define.
+
+1998-09-21  Ben Elliston  <bje@cygnus.com>
+
+	* New directory.  Moved files from ../gcc/objc.
diff --git a/libobjc/Makefile.in b/libobjc/Makefile.in
new file mode 100644
index 000000000..b33c989e6
--- /dev/null
+++ b/libobjc/Makefile.in
@@ -0,0 +1,420 @@
+# Makefile for GNU Objective C runtime library.
+# Copyright 1993, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004,
+# 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+
+#This file is part of GCC.
+
+#GCC is free software; you can redistribute it and/or modify
+#it under the terms of the GNU General Public License as published by
+#the Free Software Foundation; either version 3, or (at your option)
+#any later version.
+
+#GCC is distributed in the hope that it will be useful,
+#but WITHOUT ANY WARRANTY; without even the implied warranty of
+#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#GNU General Public License for more details.
+
+#You should have received a copy of the GNU General Public License
+#along with GCC; see the file COPYING3.  If not see
+#<http://www.gnu.org/licenses/>.
+
+#This was cribbed from the libchill, libiberty and libstdc++
+#Makefile.in files.  Some of this stuff may be unnecessary and
+#worthless.
+
+SHELL = @SHELL@
+MAKEOVERRIDES=
+
+#### Start of system configuration section. ####
+
+srcdir = @glibcpp_srcdir@
+VPATH = @glibcpp_srcdir@
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+target_noncanonical = @target_noncanonical@
+gcc_version := $(shell cat $(srcdir)/../gcc/BASE-VER)
+host_subdir = @host_subdir@
+top_srcdir = @top_srcdir@
+multi_basedir = @multi_basedir@
+toolexecdir = @toolexecdir@
+# Toolexecdir is used only by toolexeclibdir
+toolexeclibdir = @toolexeclibdir@
+
+includedirname = @includedirname@
+libsuffix = @libsuffix@
+
+lt_host_flags = @lt_host_flags@
+extra_ldflags_libobjc = @extra_ldflags_libobjc@
+
+top_builddir = .
+
+-include ../boehm-gc/threads.mk
+
+libdir = $(exec_prefix)/lib
+libsubdir = $(libdir)/gcc/$(target_noncanonical)/$(gcc_version)
+
+# Multilib support variables.
+MULTISRCTOP =
+MULTIBUILDTOP =
+MULTIDIRS =
+MULTISUBDIR =
+MULTIDO = true
+MULTICLEAN = true
+
+# Not configured per top-level version, since that doesn't get passed
+# down at configure time, but overrridden by the top-level install
+# target.
+INSTALL = @INSTALL@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_DATA = @INSTALL_DATA@
+
+AR = @AR@
+AR_FLAGS = rc
+
+RANLIB = @RANLIB@
+
+CC = @CC@
+CFLAGS = @CFLAGS@
+WARN_CFLAGS = -W -Wall -Wwrite-strings -Wstrict-prototypes
+ALL_CFLAGS = -I. -I$(srcdir) $(CPPFLAGS) $(DEFS) $(CFLAGS) $(WARN_CFLAGS) \
+	-DIN_GCC -DIN_TARGET_LIBS -fno-strict-aliasing -fexceptions
+
+# Libtool
+# The following strings describe the version of the obj-C library 
+# begin compiled and compatibility issues.
+# Please refer to Libtool documentation about how to manage these 
+# numbers.
+LIBOBJC_VERSION = @VERSION@
+LIBOBJC_GC_VERSION = @VERSION@
+LIBTOOL = @LIBTOOL@ $(LIBTOOLFLAGS)
+LIBTOOL_COMPILE = $(LIBTOOL) --mode=compile
+LIBTOOL_LINK    = $(LIBTOOL) --mode=link 
+LIBTOOL_INSTALL = $(LIBTOOL) --mode=install
+LIBTOOL_CLEAN   = $(LIBTOOL) --mode=clean
+#LIBTOOL_UNINSTALL = $(LIBTOOL) --mode=uninstall
+
+OBJC_GCFLAGS=-DOBJC_WITH_GC=1
+OBJC_BOEHM_GC=@OBJC_BOEHM_GC@
+OBJC_BOEHM_GC_INCLUDES=@OBJC_BOEHM_GC_INCLUDES@
+OBJC_BOEHM_GC_LIBS=../boehm-gc/libgcjgc_convenience.la $(thread_libs_and_flags)
+
+INCLUDES = -I$(srcdir)/$(MULTISRCTOP)../gcc \
+  -I$(srcdir)/$(MULTISRCTOP)../gcc/config \
+  -I$(MULTIBUILDTOP)../../$(host_subdir)/gcc \
+  -I$(srcdir)/$(MULTISRCTOP)../include \
+  $(OBJC_BOEHM_GC_INCLUDES)
+
+##
+## The list of header/source files
+##
+
+# User-visible header files, from the objc/ directory
+OBJC_H = \
+  objc.h \
+  objc-exception.h \
+  objc-sync.h \
+  \
+  NXConstStr.h \
+  Object.h \
+  Protocol.h \
+  encoding.h \
+  message.h \
+  objc-api.h \
+  objc-decls.h \
+  runtime.h \
+  thr.h \
+  \
+  hash.h \
+  objc-list.h \
+  sarray.h \
+  typedstream.h
+
+# User-visible header files containing deprecated APIs, from the
+# objc/deprecated directory
+OBJC_DEPRECATED_H = \
+  METHOD_NULL.h \
+  MetaClass.h \
+  Object.h \
+  Protocol.h \
+  STR.h \
+  hash.h \
+  objc-list.h \
+  objc_error.h \
+  objc_get_uninstalled_dtable.h \
+  objc_malloc.h \
+  objc_msg_sendv.h \
+  objc_object_alloc.h \
+  objc_unexpected_exception.h \
+  objc_valloc.h \
+  sarray.h \
+  struct_objc_category.h \
+  struct_objc_class.h \
+  struct_objc_ivar.h \
+  struct_objc_ivar_list.h \
+  struct_objc_method.h \
+  struct_objc_method_list.h \
+  struct_objc_module.h \
+  struct_objc_protocol.h \
+  struct_objc_protocol_list.h \
+  struct_objc_selector.h \
+  struct_objc_static_instances.h \
+  struct_objc_symtab.h \
+  typedstream.h 
+
+# Objective-C source files to compile
+OBJC_SOURCE_FILES = \
+   NXConstStr.m \
+   Object.m \
+   Protocol.m \
+   accessors.m \
+   linking.m
+
+# C source files to compile
+C_SOURCE_FILES = \
+   archive.c \
+   class.c \
+   encoding.c \
+   error.c \
+   gc.c \
+   hash.c \
+   init.c \
+   ivars.c \
+   memory.c \
+   methods.c \
+   nil_method.c \
+   objc-foreach.c \
+   objc-sync.c \
+   objects.c \
+   protocols.c \
+   sarray.c \
+   selector.c \
+   sendmsg.c \
+   thr.c \
+   exception.c
+
+# Object files to link (when the library is linked with no GC (Garbage Collection))
+OBJS = \
+  $(patsubst %.m,%.lo,$(OBJC_SOURCE_FILES)) \
+  $(patsubst %.c,%.lo,$(C_SOURCE_FILES))
+
+# Object files to link (when the library is linked with GC (Garbage Collection))
+OBJS_GC = \
+  $(patsubst %.m,%_gc.lo,$(OBJC_SOURCE_FILES)) \
+  $(patsubst %.c,%_gc.lo,$(C_SOURCE_FILES))
+
+
+##
+## The rules to build
+##
+
+# Flags to pass to a recursive make.
+FLAGS_TO_PASS = \
+	"AR=$(AR)" \
+	"AR_FLAGS=$(AR_FLAGS)" \
+	"CC=$(CC)" \
+	"CFLAGS=$(CFLAGS)" \
+	"DESTDIR=$(DESTDIR)" \
+	"LIBCFLAGS=$(LIBCFLAGS)" \
+	"EXTRA_OFILES=$(EXTRA_OFILES)" \
+	"HDEFINES=$(HDEFINES)" \
+	"INSTALL=$(INSTALL)" \
+	"INSTALL_DATA=$(INSTALL_DATA)" \
+	"INSTALL_PROGRAM=$(INSTALL_PROGRAM)" \
+	"LDFLAGS=$(LDFLAGS)" \
+	"LIBTOOL=$(LIBTOOL)" \
+	"LOADLIBES=$(LOADLIBES)" \
+	"PICFLAG=$(PICFLAG)" \
+	"RANLIB=$(RANLIB)" \
+	"SHELL=$(SHELL)" \
+	"prefix=$(prefix)" \
+	"exec_prefix=$(exec_prefix)" \
+	"libdir=$(libdir)" \
+	"libsubdir=$(libsubdir)" \
+	"tooldir=$(tooldir)"
+
+# The 'all' rule must be the first one so that it is executed if
+# nothing is specified on the command-line.
+all: libobjc$(libsuffix).la $(OBJC_BOEHM_GC)
+	: $(MAKE) ; exec $(MULTIDO) $(FLAGS_TO_PASS) multi-do DO=all
+
+.SUFFIXES:
+.SUFFIXES: .c .m .lo
+
+%.lo: %.c
+	$(LIBTOOL_COMPILE) $(CC) $< -c \
+	   $(ALL_CFLAGS) $(INCLUDES) \
+	   -o $@
+
+%_gc.lo: %.c
+	$(LIBTOOL_COMPILE) $(CC) $< -c \
+	   $(ALL_CFLAGS) $(INCLUDES) $(OBJC_GCFLAGS) \
+	   -o $@
+
+%.lo: %.m
+	$(LIBTOOL_COMPILE) $(CC) $< -c \
+	   $(ALL_CFLAGS) $(INCLUDES) -fgnu-runtime \
+	   -o $@
+
+%_gc.lo: %.m
+	$(LIBTOOL_COMPILE) $(CC) $< -c \
+	   $(ALL_CFLAGS) $(INCLUDES) $(OBJC_GCFLAGS) -fgnu-runtime \
+	   -o $@
+
+# sendmsg has a special rule because it depends on runtime-info.h.
+runtime-info.h: 
+	echo "" > tmp-runtime.m
+	echo "/* This file is automatically generated */" > $@
+	$(CC) $(MULTIFLAGS) -print-objc-runtime-info -S tmp-runtime.m >> $@
+	rm -f tmp-runtime.m tmp-runtime.s
+
+sendmsg.lo: sendmsg.c runtime-info.h
+	$(LIBTOOL_COMPILE) $(CC) $< -c \
+	   $(ALL_CFLAGS) $(INCLUDES) \
+	   -o $@
+
+sendmsg_gc.lo: sendmsg.c runtime-info.h
+	$(LIBTOOL_COMPILE) $(CC) $< -c \
+	   $(ALL_CFLAGS) $(INCLUDES) $(OBJC_GCFLAGS) \
+	   -o $@
+
+# These files have separate rules because they require special
+# compiler flags.
+archive.lo: archive.c
+	$(LIBTOOL_COMPILE) $(CC) $< -c \
+	   $(ALL_CFLAGS) $(INCLUDES) -Wno-deprecated-declarations \
+	   -o $@
+
+archive_gc.lo: archive.c
+	$(LIBTOOL_COMPILE) $(CC) $< -c \
+	   $(ALL_CFLAGS) $(INCLUDES) $(OBJC_GCFLAGS) -Wno-deprecated-declarations \
+	   -o $@
+
+# -Wno-deprecated-declarations is for the objc/typedstream.h functions.
+Object.lo: Object.m
+	$(LIBTOOL_COMPILE) $(CC) $< -c \
+	   $(ALL_CFLAGS) $(INCLUDES) -fgnu-runtime -Wno-deprecated-declarations \
+	   -o $@
+
+# -Wno-deprecated-declarations is for the objc/typedstream.h functions.
+Object_gc.lo: Object.m
+	$(LIBTOOL_COMPILE) $(CC) $< -c \
+	   $(ALL_CFLAGS) $(INCLUDES) $(OBJC_GCFLAGS) -fgnu-runtime -Wno-deprecated-declarations \
+	   -o $@
+
+# -Wno-deprecated-declarations is to silence warnings from using 
+# _objc_unexpected_exception.
+exception.lo: exception.c
+	$(LIBTOOL_COMPILE) $(CC) $< -c \
+	   $(ALL_CFLAGS) $(INCLUDES) -fexceptions -Wno-deprecated-declarations \
+	   -o $@
+
+exception_gc.lo: exception.c
+	$(LIBTOOL_COMPILE) $(CC) $< -c \
+	   $(ALL_CFLAGS) $(INCLUDES) $(OBJC_GCFLAGS) -fexceptions -Wno-deprecated-declarations \
+	   -o $@
+
+doc: info dvi pdf html
+
+# No install-html or install-pdf support
+.PHONY: install-html install-pdf install-info
+install-html:
+install-pdf:
+install-info:
+
+LTLDFLAGS = $(shell $(SHELL) $(top_srcdir)/../libtool-ldflags $(LDFLAGS))
+
+libobjc$(libsuffix).la: $(OBJS)
+	$(LIBTOOL_LINK) $(CC) -o $@ $(OBJS) \
+		-Wc,-shared-libgcc -rpath $(toolexeclibdir) \
+		-version-info $(LIBOBJC_VERSION) $(extra_ldflags_libobjc) \
+		$(LTLDFLAGS)
+
+libobjc_gc$(libsuffix).la: $(OBJS_GC)
+	$(LIBTOOL_LINK) $(CC) -o $@ $(OBJS_GC) $(OBJC_BOEHM_GC_LIBS) \
+		-Wc,-shared-libgcc -rpath $(toolexeclibdir) \
+		-version-info $(LIBOBJC_GC_VERSION) $(extra_ldflags_libobjc) \
+		$(LTLDFLAGS)
+
+info:
+dvi:
+pdf:
+html:
+
+Makefile: Makefile.in config.status
+	$(SHELL) config.status
+
+config.status: configure
+	rm -f config.cache
+	CONFIG_SITE=no-such-file CC='$(CC)' AR='$(AR)' CFLAGS='$(CFLAGS)' \
+	CPPFLAGS='$(CPPFLAGS)' $(SHELL) config.status --recheck
+
+AUTOCONF = autoconf
+ACLOCAL = aclocal
+ACLOCAL_AMFLAGS = -I ../config -I ..
+aclocal_deps = \
+	$(srcdir)/../config/multi.m4 \
+	$(srcdir)/../config/override.m4 \
+	$(srcdir)/../config/proginstall.m4 \
+	$(srcdir)/../ltoptions.m4 \
+	$(srcdir)/../ltsugar.m4 \
+	$(srcdir)/../ltversion.m4 \
+	$(srcdir)/../lt~obsolete.m4 \
+	$(srcdir)/acinclude.m4
+
+$(srcdir)/configure: @MAINT@ configure.ac $(srcdir)/aclocal.m4
+	rm -f config.cache
+	cd $(srcdir) && $(AUTOCONF)
+
+$(srcdir)/aclocal.m4: @MAINT@ $(aclocal_deps)
+	cd $(srcdir) && $(ACLOCAL) $(ACLOCAL_AMFLAGS)
+
+install: install-libs install-headers
+
+install-libs: installdirs
+	$(SHELL) $(multi_basedir)/mkinstalldirs $(DESTDIR)$(toolexeclibdir)
+	$(LIBTOOL_INSTALL) $(INSTALL) libobjc$(libsuffix).la $(DESTDIR)$(toolexeclibdir);
+	if [ "$(OBJC_BOEHM_GC)" ]; then \
+	  $(LIBTOOL_INSTALL) $(INSTALL) libobjc_gc$(libsuffix).la \
+				$(DESTDIR)$(toolexeclibdir);\
+	fi
+	$(MULTIDO) $(FLAGS_TO_PASS) multi-do DO="$@"
+	@-$(LIBTOOL) --mode=finish $(DESTDIR)$(toolexeclibdir)
+
+# Copy Objective-C headers to installation include directory.
+install-headers:
+	$(SHELL) $(multi_basedir)/mkinstalldirs $(DESTDIR)$(libsubdir)/$(includedirname)/objc
+	for file in $(OBJC_H); do \
+	  realfile=$(srcdir)/objc/$${file}; \
+	  $(INSTALL_DATA) $${realfile} $(DESTDIR)$(libsubdir)/$(includedirname)/objc; \
+	done
+	$(multi_basedir)/mkinstalldirs $(DESTDIR)$(libsubdir)/$(includedirname)/objc/deprecated
+	for file in $(OBJC_DEPRECATED_H); do \
+	  realfile=$(srcdir)/objc/deprecated/$${file}; \
+	  $(INSTALL_DATA) $${realfile} $(DESTDIR)$(libsubdir)/$(includedirname)/objc/deprecated; \
+	done
+
+check uninstall install-strip dist installcheck installdirs:
+
+mostlyclean:
+	-$(LIBTOOL_CLEAN) rm -f libobjc$(libsuffix).la libobjc_gc$(libsuffix).la *.lo
+	-rm -f runtime-info.h tmp-runtime.s *.o *.lo libobjc* xforward \
+		fflags *.aux *.cp *.dvi *.pdf *.fn *.info *.ky *.log *.pg \
+		*.toc *.tp *.vr *.html libobj.exp
+	@$(MULTICLEAN) multi-clean DO=mostlyclean
+
+clean: mostlyclean
+	rm -f config.log
+	@$(MULTICLEAN) multi-clean DO=clean
+
+distclean: clean
+	@$(MULTICLEAN) multi-clean DO=distclean
+	rm -f config.cache config.status Makefile configure
+
+maintainer-clean realclean: distclean
+
+.PHONY: mostlyclean clean distclean maintainer-clean all check uninstall \
+	install-strip dist installcheck installdirs 
+
+# Don't export variables to the environment, in order to not confuse
+# configure.
+.NOEXPORT:
diff --git a/libobjc/NXConstStr.m b/libobjc/NXConstStr.m
new file mode 100644
index 000000000..1442ba6d3
--- /dev/null
+++ b/libobjc/NXConstStr.m
@@ -0,0 +1,41 @@
+/* Implementation of the NXConstantString class for Objective-C.
+   Copyright (C) 1995, 2009, 2010 Free Software Foundation, Inc.
+   Contributed by Pieter J. Schoenmakers <tiggr@es.ele.tue.nl>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */ 
+
+#include "objc-private/common.h"
+#include "objc/NXConstStr.h"
+
+@implementation NXConstantString
+
+-(const char *) cString
+{
+  return (c_string);
+} /* -cString */
+
+-(unsigned int) length
+{
+  return (len);
+} /* -length */
+
+@end
diff --git a/libobjc/Object.m b/libobjc/Object.m
new file mode 100644
index 000000000..224c0aa66
--- /dev/null
+++ b/libobjc/Object.m
@@ -0,0 +1,389 @@
+/* The implementation of class Object for Objective-C.
+   Copyright (C) 1993, 1994, 1995, 1997, 2002, 2009, 2010
+   Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "objc-private/common.h"
+#include <stdarg.h>
+#include <errno.h>
+#include "objc/Object.h"
+#include "objc/Protocol.h"
+#include "objc/objc-api.h"
+
+@implementation Object
+
+- (Class)class
+{
+  return object_get_class (self);
+}
+
+- (BOOL)isEqual: (id)anObject
+{
+  return self == anObject;
+}
+
+@end
+
+/* The following methods were deprecated in GCC 4.6.0 and will be
+   removed in the next GCC release.  */
+@implementation Object (Deprecated)
+
++ initialize
+{
+  return self;
+}
+
+- init
+{
+  return self;
+}
+
++ new
+{
+  return [[self alloc] init];
+}
+
++ alloc
+{
+  return class_create_instance(self);
+}
+
+- free
+{
+  return object_dispose(self);
+}
+
+- copy
+{
+  return [[self shallowCopy] deepen];
+}
+
+- shallowCopy
+{
+  return object_copy(self);
+}
+
+- deepen
+{
+  return self;
+}
+
+- deepCopy
+{
+  return [self copy];
+}
+
+- (Class)superClass
+{
+  return object_get_super_class(self);
+}
+
+- (MetaClass)metaClass
+{
+  return object_get_meta_class(self);
+}
+
+- (const char *)name
+{
+  return object_get_class_name(self);
+}
+
+- self
+{
+  return self;
+}
+
+- (unsigned int)hash
+{
+  return (size_t)self;
+}
+
+- (int)compare:(id)anotherObject;
+{
+  if ([self isEqual:anotherObject])
+    return 0;
+  // Ordering objects by their address is pretty useless, 
+  // so subclasses should override this is some useful way.
+  else if ((id)self > anotherObject)
+    return 1;
+  else 
+    return -1;
+}
+
+- (BOOL)isMetaClass
+{
+  return NO;
+}
+
+- (BOOL)isClass
+{
+  return object_is_class(self);
+}
+
+- (BOOL)isInstance
+{
+  return object_is_instance(self);
+}
+
+- (BOOL)isKindOf:(Class)aClassObject
+{
+  Class class;
+
+  for (class = self->isa; class!=Nil; class = class_get_super_class(class))
+    if (class==aClassObject)
+      return YES;
+  return NO;
+}
+
+- (BOOL)isMemberOf:(Class)aClassObject
+{
+  return self->isa==aClassObject;
+}
+
+- (BOOL)isKindOfClassNamed:(const char *)aClassName
+{
+  Class class;
+
+  if (aClassName!=NULL)
+    for (class = self->isa; class!=Nil; class = class_get_super_class(class))
+      if (!strcmp(class_get_class_name(class), aClassName))
+        return YES;
+  return NO;
+}
+
+- (BOOL)isMemberOfClassNamed:(const char *)aClassName
+{
+  return ((aClassName!=NULL)
+          &&!strcmp(class_get_class_name(self->isa), aClassName));
+}
+
++ (BOOL)instancesRespondTo:(SEL)aSel
+{
+  return class_get_instance_method(self, aSel) != (Method_t)0;
+}
+
+- (BOOL)respondsTo:(SEL)aSel
+{
+  return ((object_is_instance(self)
+           ?class_get_instance_method(self->isa, aSel)
+           :class_get_class_method(self->isa, aSel)) != (Method_t)0);
+}
+
++ (IMP)instanceMethodFor:(SEL)aSel
+{
+  return method_get_imp(class_get_instance_method(self, aSel));
+}
+
+// Indicates if the receiving class or instance conforms to the given protocol
+// not usually overridden by subclasses
+//
+// Modified 9/5/94 to always search the class object's protocol list, rather
+// than the meta class.
+
++ (BOOL) conformsTo: (Protocol*)aProtocol
+{
+  size_t i;
+  struct objc_protocol_list* proto_list;
+  id parent;
+
+  for (proto_list = ((Class)self)->protocols;
+       proto_list; proto_list = proto_list->next)
+    {
+      for (i=0; i < proto_list->count; i++)
+      {
+        if ([proto_list->list[i] conformsTo: aProtocol])
+          return YES;
+      }
+    }
+
+  if ((parent = [self superClass]))
+    return [parent conformsTo: aProtocol];
+  else
+    return NO;
+}
+
+- (BOOL) conformsTo: (Protocol*)aProtocol
+{
+  return [[self class] conformsTo:aProtocol];
+}
+
+- (IMP)methodFor:(SEL)aSel
+{
+  return (method_get_imp(object_is_instance(self)
+                         ?class_get_instance_method(self->isa, aSel)
+                         :class_get_class_method(self->isa, aSel)));
+}
+
++ (struct objc_method_description *)descriptionForInstanceMethod:(SEL)aSel
+{
+  return ((struct objc_method_description *)
+           class_get_instance_method(self, aSel));
+}
+
+- (struct objc_method_description *)descriptionForMethod:(SEL)aSel
+{
+  return ((struct objc_method_description *)
+           (object_is_instance(self)
+            ?class_get_instance_method(self->isa, aSel)
+            :class_get_class_method(self->isa, aSel)));
+}
+
+- perform:(SEL)aSel
+{
+  IMP msg = objc_msg_lookup(self, aSel);
+  if (!msg)
+    return [self error:"invalid selector passed to %s", sel_get_name(_cmd)];
+  return (*msg)(self, aSel);
+}
+
+- perform:(SEL)aSel with:anObject
+{
+  IMP msg = objc_msg_lookup(self, aSel);
+  if (!msg)
+    return [self error:"invalid selector passed to %s", sel_get_name(_cmd)];
+  return (*msg)(self, aSel, anObject);
+}
+
+- perform:(SEL)aSel with:anObject1 with:anObject2
+{
+  IMP msg = objc_msg_lookup(self, aSel);
+  if (!msg)
+    return [self error:"invalid selector passed to %s", sel_get_name(_cmd)];
+  return (*msg)(self, aSel, anObject1, anObject2);
+}
+
+- (retval_t)forward:(SEL)aSel :(arglist_t)argFrame
+{
+  (void) argFrame; /* UNUSED */
+  return (retval_t)[self doesNotRecognize: aSel];
+}
+
+- (retval_t)performv:(SEL)aSel :(arglist_t)argFrame
+{
+  return objc_msg_sendv(self, aSel, argFrame);
+}
+
++ poseAs:(Class)aClassObject
+{
+  return class_pose_as(self, aClassObject);
+}
+
+- (Class)transmuteClassTo:(Class)aClassObject
+{
+  if (object_is_instance(self))
+    if (class_is_class(aClassObject))
+      if (class_get_instance_size(aClassObject)==class_get_instance_size(isa))
+        if ([self isKindOf:aClassObject])
+          {
+            Class old_isa = isa;
+            isa = aClassObject;
+            return old_isa;
+          }
+  return nil;
+}
+
+- subclassResponsibility:(SEL)aSel
+{
+  return [self error:"subclass should override %s", sel_get_name(aSel)];
+}
+
+- notImplemented:(SEL)aSel
+{
+  return [self error:"method %s not implemented", sel_get_name(aSel)];
+}
+
+- shouldNotImplement:(SEL)aSel
+{
+  return [self error:"%s should not implement %s", 
+	             object_get_class_name(self), sel_get_name(aSel)];
+}
+
+- doesNotRecognize:(SEL)aSel
+{
+  return [self error:"%s does not recognize %s",
+                     object_get_class_name(self), sel_get_name(aSel)];
+}
+
+- error:(const char *)aString, ...
+{
+#define FMT "error: %s (%s)\n%s\n"
+  char fmt[(strlen((char*)FMT)+strlen((char*)object_get_class_name(self))
+            +((aString!=NULL)?strlen((char*)aString):0)+8)];
+  va_list ap;
+
+  sprintf(fmt, FMT, object_get_class_name(self),
+                    object_is_instance(self)?"instance":"class",
+                    (aString!=NULL)?aString:"");
+  va_start(ap, aString);
+  objc_verror(self, OBJC_ERR_UNKNOWN, fmt, ap);
+  va_end(ap);
+  return nil;
+#undef FMT
+}
+
++ (int)version
+{
+  return class_get_version(self);
+}
+
++ setVersion:(int)aVersion
+{
+  class_set_version(self, aVersion);
+  return self;
+}
+
++ (int)streamVersion: (TypedStream*)aStream
+{
+  if (aStream->mode == OBJC_READONLY)
+    return objc_get_stream_class_version (aStream, self);
+  else
+    return class_get_version (self);
+}
+
+// These are used to write or read the instance variables 
+// declared in this particular part of the object.  Subclasses
+// should extend these, by calling [super read/write: aStream]
+// before doing their own archiving.  These methods are private, in
+// the sense that they should only be called from subclasses.
+
+- read: (TypedStream*)aStream
+{
+  (void) aStream; /* UNUSED */
+  // [super read: aStream];  
+  return self;
+}
+
+- write: (TypedStream*)aStream
+{
+  (void) aStream; /* UNUSED */
+  // [super write: aStream];
+  return self;
+}
+
+- awake
+{
+  // [super awake];
+  return self;
+}
+
+@end
diff --git a/libobjc/Protocol.m b/libobjc/Protocol.m
new file mode 100644
index 000000000..7c9207510
--- /dev/null
+++ b/libobjc/Protocol.m
@@ -0,0 +1,120 @@
+/* This file contains the implementation of class Protocol.
+   Copyright (C) 1993, 2004, 2009, 2010 Free Software Foundation, Inc.
+
+This file is part of GCC. 
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */ 
+
+#include "objc-private/common.h"
+#include "objc/runtime.h"
+#include "objc-private/module-abi-8.h"
+#include "objc/Protocol.h"
+
+@implementation Protocol
+- (BOOL) isEqual: (id)obj
+{
+  return protocol_isEqual (self, obj);
+}
+@end
+
+@implementation Protocol (Deprecated)
+
+- (const char *)name
+{
+  return protocol_name;
+}
+
+- (BOOL) conformsTo: (Protocol *)aProtocolObject
+{
+  return protocol_conformsToProtocol (self, aProtocolObject);
+}
+
+- (struct objc_method_description *) descriptionForInstanceMethod:(SEL)aSel
+{
+  int i;
+  struct objc_protocol_list* proto_list;
+  struct objc_method_description *result;
+
+  if (instance_methods)
+    for (i = 0; i < instance_methods->count; i++)
+      {
+	if (sel_isEqual (instance_methods->list[i].name, aSel))
+	  return &(instance_methods->list[i]);
+      }
+
+  for (proto_list = protocol_list; proto_list; proto_list = proto_list->next)
+    {
+      size_t j;
+      for (j=0; j < proto_list->count; j++)
+	{
+	  if ((result = [proto_list->list[j]
+				   descriptionForInstanceMethod: aSel]))
+	    return result;
+	}
+    }
+
+  return NULL;
+}
+
+- (struct objc_method_description *) descriptionForClassMethod:(SEL)aSel;
+{
+  int i;
+  struct objc_protocol_list* proto_list;
+  struct objc_method_description *result;
+
+  if (class_methods)
+    for (i = 0; i < class_methods->count; i++)
+      {
+	if (sel_isEqual (class_methods->list[i].name, aSel))
+	  return &(class_methods->list[i]);
+      }
+
+  for (proto_list = protocol_list; proto_list; proto_list = proto_list->next)
+    {
+      size_t j;
+      for (j=0; j < proto_list->count; j++)
+	{
+	  if ((result = [proto_list->list[j]
+				   descriptionForClassMethod: aSel]))
+	    return result;
+	}
+    }
+
+  return NULL;
+}
+
+- (unsigned) hash
+{
+  /* Compute a hash of the protocol_name; use the same hash algorithm
+     that we use for class names; protocol names and class names are
+     somewhat similar types of string spaces.  */
+  int hash = 0, index;
+  
+  for (index = 0; protocol_name[index] != '\0'; index++)
+    {
+      hash = (hash << 4) ^ (hash >> 28) ^ protocol_name[index];
+    }
+
+  hash = (hash ^ (hash >> 10) ^ (hash >> 20));
+
+  return hash;
+}
+
+@end
diff --git a/libobjc/README b/libobjc/README
new file mode 100644
index 000000000..093116fd5
--- /dev/null
+++ b/libobjc/README
@@ -0,0 +1,104 @@
+
+GNU Objective C notes
+*********************
+
+This document is to explain what has been done, and a little about how
+specific features differ from other implementations.  The runtime has
+been completely rewritten in gcc 2.4.  The earlier runtime had several
+severe bugs and was rather incomplete.  The compiler has had several
+new features added as well.
+
+This is not documentation for Objective C, it is usable to someone
+who knows Objective C from somewhere else.
+
+
+Runtime API functions
+=====================
+
+The runtime is modeled after the NeXT Objective C runtime.  That is,
+most functions have semantics as it is known from the NeXT.  The
+names, however, have changed.  All runtime API functions have names
+of lowercase letters and underscores as opposed to the
+`traditional' mixed case names.  
+	The runtime api functions are not documented as of now.
+Someone offered to write it, and did it, but we were not allowed to
+use it by his university (Very sad story).  We have started writing
+the documentation over again.  This will be announced in appropriate
+places when it becomes available.
+
+
+Protocols
+=========
+
+Protocols are now fully supported.  The semantics is exactly as on the
+NeXT.  There is a flag to specify how protocols should be typechecked
+when adopted to classes.  The normal typechecker requires that all
+methods in a given protocol must be implemented in the class that
+adopts it -- it is not enough to inherit them.  The flag
+`-Wno-protocol' causes it to allow inherited methods, while
+`-Wprotocols' is the default which requires them defined.
+
+
++load
+===========
+This method, if defined, is called for each class and category
+implementation when the class is loaded into the runtime.  This method
+is not inherited, and is thus not called for a subclass that doesn't
+define it itself.  Thus, each +load method is called exactly once by
+the runtime.  The runtime invocation of this method is thread safe.
+
+
++initialize 
+===========
+
+This method, if defined, is called before any other instance or class
+methods of that particular class.  For the GNU runtime, this method is 
+not inherited, and is thus not called as initializer for a subclass that 
+doesn't define it itself.  Thus, each +initialize method is called exactly 
+once by the runtime (or never if no methods of that particular class is 
+never called).  It is wise to guard against multiple invocations anyway 
+to remain portable with the NeXT runtime.  The runtime invocation of 
+this method is thread safe.
+
+
+Passivation/Activation/Typedstreams
+===================================
+
+This is supported in the style of NeXT TypedStream's.  Consult the
+headerfile Typedstreams.h for api functions.  I (Kresten) have
+rewritten it in Objective C, but this implementation is not part of
+2.4, it is available from the GNU Objective C prerelease archive. 
+   There is one difference worth noting concerning objects stored with
+objc_write_object_reference (aka NXWriteObjectReference).  When these
+are read back in, their object is not guaranteed to be available until
+the `-awake' method is called in the object that requests that object.
+To objc_read_object you must pass a pointer to an id, which is valid
+after exit from the function calling it (like e.g. an instance
+variable).  In general, you should not use objects read in until the
+-awake method is called.
+
+
+Acknowledgements
+================
+
+The GNU Objective C team: Geoffrey Knauth <gsk@marble.com> (manager),
+Tom Wood <wood@next.com> (compiler) and Kresten Krab Thorup
+<krab@iesd.auc.dk> (runtime) would like to thank a some people for
+participating in the development of the present GNU Objective C.
+
+Paul Burchard <burchard@geom.umn.edu> and Andrew McCallum
+<mccallum@cs.rochester.edu> has been very helpful debugging the
+runtime.   Eric Herring <herring@iesd.auc.dk> has been very helpful
+cleaning up after the documentation-copyright disaster and is now
+helping with the new documentation.
+
+Steve Naroff <snaroff@next.com> and Richard Stallman
+<rms@gnu.ai.mit.edu> has been very helpful with implementation details
+in the compiler.
+
+
+Bug Reports
+===========
+
+Please read the section `Submitting Bugreports' of the gcc manual
+before you submit any bugs.
diff --git a/libobjc/THREADS b/libobjc/THREADS
new file mode 100644
index 000000000..5004b2cbc
--- /dev/null
+++ b/libobjc/THREADS
@@ -0,0 +1,339 @@
+This file describes in little detail the modifications to the
+Objective-C runtime needed to make it thread safe. 
+
+First off, kudos to Galen Hunt who is the author of this great work.
+
+If you have an comments or just want to know where to
+send me money to express your undying gratitude for threading the
+Objective-C runtime you can reach Galen at:
+
+	gchunt@cs.rochester.edu
+
+Any questions, comments, bug reports, etc. should send email either to the
+GCC bug account or to:
+
+	Scott Christley <scottc@net-community.com>
+
+* Sarray Threading:
+
+The most critical component of the Objective-C runtime is the sparse array
+structure (sarray).  Sarrays store object selectors and implementations.  
+Following in the tradition of the Objective-C runtime, my threading
+support assumes that fast message dispatching is far more important
+than *ANY* and *ALL* other operations.  The message dispatching thus
+uses *NO* locks on any kind.  In fact, if you look in sarray.h, you
+will notice that the message dispatching has not been modified.
+Instead, I have modified the sarray management functions so that all
+updates to the sarray data structure can be made in parallel will
+message dispatching.  
+
+To support concurrent message dispatching, no dynamically allocated
+sarray data structures are freed while more than one thread is
+operational.  Sarray data structures that are no longer in use are
+kept in a linked list of garbage and are released whenever the program
+is operating with a single thread.  The programmer can also flush the 
+garbage list by calling sarray_remove_garbage when the programmer can
+ensure that no message dispatching is taking place concurrently.  The
+amount of un-reclaimed sarray garbage should normally be extremely
+small in a real program as sarray structures are freed only when using
+the "poseAs" functionality and early in program initialization, which
+normally occurs while the program is single threaded.
+
+******************************************************************************
+* Static Variables:
+
+The following variables are either statically or globally defined. This list 
+does not include variables which are internal to implementation dependent 
+versions of thread-*.c.
+
+The following threading designations are used:
+	SAFE   : Implicitly thread safe.
+	SINGLE : Must only be used in single thread mode.
+	MUTEX  : Protected by single global mutex objc_runtime_mutex.
+	UNUSED : Not used in the runtime.
+
+Variable Name:			Usage:  Defined:	Also used in:
+===========================	======	============	=====================
+__objc_class_hash		MUTEX	class.c
+__objc_class_links_resolved	UNUSED	class.c		runtime.h
+__objc_class_number		MUTEX	class.c
+__objc_dangling_categories	UNUSED	init.c
+__objc_module_list		MUTEX	init.c
+__objc_selector_array		MUTEX	selector.c
+__objc_selector_hash		MUTEX	selector.c
+__objc_selector_max_index	MUTEX	selector.c	sendmsg.c runtime.h
+__objc_selector_names		MUTEX	selector.c
+__objc_thread_exit_status	SAFE	thread.c
+__objc_uninstalled_dtable	MUTEX	sendmsg.c	selector.c
+_objc_load_callback		SAFE	init.c		objc-api.h
+_objc_lookup_class		SAFE	class.c		objc-api.h
+_objc_object_alloc		SINGLE	objects.c	objc-api.h
+_objc_object_copy		SINGLE	objects.c	objc-api.h
+_objc_object_dispose		SINGLE	objects.c	objc-api.h
+frwd_sel			SAFE2	sendmsg.c
+idxsize				MUTEX	sarray.c	sendmsg.c sarray.h
+initialize_sel			SAFE2	sendmsg.c
+narrays				MUTEX	sarray.c	sendmsg.c sarray.h
+nbuckets			MUTEX	sarray.c	sendmsg.c sarray.h
+nindices			MUTEX	sarray.c	sarray.h
+previous_constructors		SAFE1	init.c
+proto_class			SAFE1	init.c
+unclaimed_categories		MUTEX	init.c
+unclaimed_proto_list		MUTEX	init.c
+uninitialized_statics		MUTEX	init.c
+
+Notes:
+1) Initialized once in unithread mode.
+2) Initialized value will always be same, guaranteed by lock on selector 
+   hash table.
+
+
+******************************************************************************
+* Frontend/Backend design:
+
+The design of the Objective-C runtime thread and mutex functions utilizes a
+frontend/backend implementation.
+
+The frontend, as characterized by the files thr.h and thr.c, is a set
+of platform independent structures and functions which represent the
+user interface.  For example, objc_mutex_lock().  Objective-C programs
+should use these structures and functions for their thread and mutex
+work if they wish to maintain a high degree of portability across
+platforms.
+
+The backend is currently GCC's gthread code (gthr.h and related).  For
+example, __gthread_objc_mutex_lock().  The thread system is
+automatically configured when GCC is configured.  On most platforms
+this thread backend is able to automatically switch to non-multi-threaded
+mode if the threading library is not linked in.
+
+If you want to compile libobjc standalone, then you would need to modify
+the configure.in and makefiles for it and you need to import the
+gthread code from GCC.
+
+******************************************************************************
+* Threads:
+
+The thread system attempts to create multiple threads using whatever
+operating system or library thread support is available.  It does
+assume that all system functions are thread safe.  Notably this means
+that the system implementation of malloc and free must be thread safe.
+If a system has multiple processors, the threads are configured for
+full parallel processing.
+
+* Backend initialization functions
+
+__objc_init_thread_system(void), int
+	Initialize the thread subsystem.  Called once by __objc_exec_class.
+	Return -1 if error otherwise return 0.
+
+__objc_close_thread_system(void), int
+	Closes the thread subsystem, not currently guaranteed to be called.
+	Return -1 if error otherwise return 0.
+
+*****
+* Frontend thread functions
+* User programs should use these functions.
+
+objc_thread_detach(SEL selector, id object, id argument), objc_thread_t
+	Creates and detaches a new thread.  The new thread starts by
+	sending the given selector with a single argument to the
+	given object.
+
+objc_thread_set_priority(int priority), int
+	Sets a thread's relative priority within the program.  Valid
+	options are:
+	
+	OBJC_THREAD_INTERACTIVE_PRIORITY
+	OBJC_THREAD_BACKGROUND_PRIORITY
+	OBJC_THREAD_LOW_PRIORITY
+
+objc_thread_get_priority(void), int
+	Query a thread's priority.
+
+objc_thread_yield(void), void
+	Yields processor to another thread with equal or higher
+	priority.  It is up to the system scheduler to determine if
+	the processor is taken or not.
+
+objc_thread_exit(void), int
+	Terminates a thread.  If this is the last thread executing
+	then the program will terminate.
+
+objc_thread_id(void), int
+	Returns the current thread's id.
+
+objc_thread_set_data(void *value), int
+	Set a pointer to the thread's local storage.  Local storage is
+	thread specific.
+
+objc_thread_get_data(void), void *
+	Returns the pointer to the thread's local storage.
+
+*****
+* Backend thread functions
+* User programs should *NOT* directly call these functions.
+
+__gthr_objc_thread_detach(void (*func)(void *arg), void *arg), objc_thread_t
+	Spawns a new thread executing func, called by objc_thread_detach.
+	Return NULL if error otherwise return thread id.
+
+__gthr_objc_thread_set_priority(int priority), int
+	Set the thread's priority, called by objc_thread_set_priority.
+	Return -1 if error otherwise return 0.
+
+__gthr_objc_thread_get_priority(void), int
+	Query a thread's priority, called by objc_thread_get_priority.
+	Return -1 if error otherwise return the priority.
+
+__gthr_objc_thread_yield(void), void
+	Yields the processor, called by objc_thread_yield.
+
+__gthr_objc_thread_exit(void), int
+	Terminates the thread, called by objc_thread_exit.
+	Return -1 if error otherwise function does not return.
+
+__gthr_objc_thread_id(void), objc_thread_t
+	Returns the current thread's id, called by objc_thread_id.
+	Return -1 if error otherwise return thread id.
+
+__gthr_objc_thread_set_data(void *value), int
+	Set pointer for thread local storage, called by objc_thread_set_data.
+	Returns -1 if error otherwise return 0.
+
+__gthr_objc_thread_get_data(void), void *
+	Returns the pointer to the thread's local storage.
+	Returns NULL if error, called by objc_thread_get_data.
+
+
+******************************************************************************
+* Mutexes:
+
+Mutexes can be locked recursively.  Each locked mutex remembers
+its owner (by thread id) and how many times it has been locked.  The
+last unlock on a mutex removes the system lock and allows other
+threads to access the mutex.
+
+*****
+* Frontend mutex functions
+* User programs should use these functions.
+
+objc_mutex_allocate(void), objc_mutex_t
+	Allocates a new mutex.  Mutex is initially unlocked.
+	Return NULL if error otherwise return mutex pointer.
+
+objc_mutex_deallocate(objc_mutex_t mutex), int
+	Free a mutex.  Before freeing the mutex, makes sure that no
+	one else is using it.
+	Return -1 if error otherwise return 0.
+
+objc_mutex_lock(objc_mutex_t mutex), int
+	Locks a mutex.  As mentioned earlier, the same thread may call
+	this routine repeatedly.
+	Return -1 if error otherwise return 0.
+	
+objc_mutex_trylock(objc_mutex_t mutex), int
+	Attempts to lock a mutex.  If lock on mutex can be acquired 
+	then function operates exactly as objc_mutex_lock.
+	Return -1 if failed to acquire lock otherwise return 0.
+
+objc_mutex_unlock(objc_mutex_t mutex), int
+	Unlocks the mutex by one level.  Other threads may not acquire
+	the mutex until this thread has released all locks on it.
+	Return -1 if error otherwise return 0.
+
+*****
+* Backend mutex functions
+* User programs should *NOT* directly call these functions.
+
+__gthr_objc_mutex_allocate(objc_mutex_t mutex), int
+	Allocates a new mutex, called by objc_mutex_allocate.
+	Return -1 if error otherwise return 0.
+
+__gthr_objc_mutex_deallocate(objc_mutex_t mutex), int
+	Free a mutex, called by objc_mutex_deallocate.
+	Return -1 if error otherwise return 0.
+
+__gthr_objc_mutex_lock(objc_mutex_t mutex), int
+	Locks a mutex, called by objc_mutex_lock.
+	Return -1 if error otherwise return 0.
+	
+__gthr_objc_mutex_trylock(objc_mutex_t mutex), int
+	Attempts to lock a mutex, called by objc_mutex_trylock.
+	Return -1 if failed to acquire lock or error otherwise return 0.
+
+__gthr_objc_mutex_unlock(objc_mutex_t mutex), int
+	Unlocks the mutex, called by objc_mutex_unlock.
+	Return -1 if error otherwise return 0.
+
+******************************************************************************
+* Condition Mutexes:
+
+Mutexes can be locked recursively.  Each locked mutex remembers
+its owner (by thread id) and how many times it has been locked.  The
+last unlock on a mutex removes the system lock and allows other
+threads to access the mutex.
+
+*
+* Frontend condition mutex functions
+* User programs should use these functions.
+*
+
+objc_condition_allocate(void), objc_condition_t 
+	Allocate a condition mutex.
+	Return NULL if error otherwise return condition pointer.
+
+objc_condition_deallocate(objc_condition_t condition), int
+	Deallocate a condition. Note that this includes an implicit
+	condition_broadcast to insure that waiting threads have the 
+	opportunity to wake.  It is legal to dealloc a condition only
+	if no other thread is/will be using it. Does NOT check for
+	other threads waiting but just wakes them up.
+	Return -1 if error otherwise return 0.
+
+objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex), int
+	Wait on the condition unlocking the mutex until objc_condition_signal()
+	or objc_condition_broadcast() are called for the same condition. The
+	given mutex *must* have the depth 1 so that it can be unlocked
+	here, for someone else can lock it and signal/broadcast the condition.
+	The mutex is used to lock access to the shared data that make up the
+	"condition" predicate.
+	Return -1 if error otherwise return 0.
+	
+objc_condition_broadcast(objc_condition_t condition), int
+	Wake up all threads waiting on this condition. It is recommended that 
+	the called would lock the same mutex as the threads in
+	objc_condition_wait before changing the "condition predicate"
+	and make this call and unlock it right away after this call.
+	Return -1 if error otherwise return 0.
+
+objc_condition_signal(objc_condition_t condition), int
+	Wake up one thread waiting on this condition.
+	Return -1 if error otherwise return 0.
+
+*
+* Backend condition mutex functions
+* User programs should *NOT* directly call these functions.
+*
+
+__gthr_objc_condition_allocate(objc_condition_t condition), int
+	Allocate a condition mutex, called by objc_condition_allocate.
+	Return -1 if error otherwise return 0.
+
+__gthr_objc_condition_deallocate(objc_condition_t condition), int
+	Deallocate a condition, called by objc_condition_deallocate.
+	Return -1 if error otherwise return 0.
+
+__gthr_objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex), int
+	Wait on the condition, called by objc_condition_wait.
+	Return -1 if error otherwise return 0 when condition is met.
+	
+__gthr_objc_condition_broadcast(objc_condition_t condition), int
+	Wake up all threads waiting on this condition.
+	Called by objc_condition_broadcast.
+	Return -1 if error otherwise return 0.
+
+__gthr_objc_condition_signal(objc_condition_t condition), int
+	Wake up one thread waiting on this condition.
+	Called by objc_condition_signal.
+	Return -1 if error otherwise return 0.
diff --git a/libobjc/accessors.m b/libobjc/accessors.m
new file mode 100644
index 000000000..a47903a6c
--- /dev/null
+++ b/libobjc/accessors.m
@@ -0,0 +1,289 @@
+/* GNU Objective C Runtime accessors functions
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Nicola Pero
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "objc-private/common.h"
+#include "objc/objc.h"
+#include "objc/thr.h"
+#include <string.h>                    /* For memcpy */
+
+/* This file contains functions that the compiler uses when
+   synthesizing accessors (getters/setters) for properties.  The
+   functions are part of the ABI, but are meant to be used by the
+   compiler and not by users; for this reason, they are not declared
+   in public header files.  The compiler automatically generates
+   declarations for these functions.  */
+
+/* Properties can be "atomic", which requires protecting them from
+   concurrency issues using a lock.  Unfortunately, we can't have a
+   lock for each property, so we'll go with a small pool of locks.
+   Any time a property is accessed in an "atomic" way, we pick a
+   random lock from the pool (random, but always the same one for the
+   same property of the same object) and use it to protect access to
+   the property.
+
+   The size of the pool is currently 16.  A bigger pool can help
+   reduce contention, ie, reduce the chances that two threads,
+   operating on unrelated properties, will have to wait for each other
+   because the properties use the same lock.  16 seems big enough at
+   the moment.  */
+#define ACCESSORS_NUMBER_OF_LOCKS 16
+
+#define ACCESSORS_HASH(POINTER) ((((size_t)POINTER >> 8) ^ (size_t)POINTER) & (ACCESSORS_NUMBER_OF_LOCKS - 1))
+
+static objc_mutex_t accessors_locks[ACCESSORS_NUMBER_OF_LOCKS];
+
+/* This is called at startup to setup the locks.  */
+void
+__objc_accessors_init (void)
+{
+  int i;
+
+  for (i = 0; i < ACCESSORS_NUMBER_OF_LOCKS; i++)
+    accessors_locks[i] = objc_mutex_allocate ();
+}
+
+/* The property accessors automatically call various methods from the
+   Foundation library (eg, GNUstep-base).  These methods are not
+   implemented here, but we need to declare them so we can compile the
+   runtime.  The Foundation library will need to provide
+   implementations of these methods (most likely in the root class,
+   eg, NSObject) as the accessors only work with objects of classes
+   that implement these methods.  */
+@interface _libobjcNSObject
+- (id) copyWithZone: (void *)zone;
+- (id) mutableCopyWithZone: (void *)zone;
+@end
+#define COPY(X)         [((_libobjcNSObject *)(X)) copyWithZone: NULL]
+#define MUTABLE_COPY(X) [((_libobjcNSObject *)(X)) mutableCopyWithZone: NULL]
+
+
+#if OBJC_WITH_GC
+
+#  define AUTORELEASE(X)  (X)
+#  define RELEASE(X)
+#  define RETAIN(X)       (X)
+
+#else
+
+@interface _libobjcNSObject (RetainReleaseMethods)
+- (id) autorelease;
+- (oneway void) release;
+- (id) retain;
+@end
+#  define AUTORELEASE(X)  [((_libobjcNSObject *)(X)) autorelease]
+#  define RELEASE(X)      [((_libobjcNSObject *)(X)) release]
+#  define RETAIN(X)       [((_libobjcNSObject *)(X)) retain]
+
+#endif
+
+/* The compiler uses this function when implementing some synthesized
+   getters for properties of type 'id'.  */
+id
+objc_getProperty (id self, SEL __attribute__((unused)) _cmd, ptrdiff_t offset, BOOL is_atomic)
+{
+  if (self != nil)
+    {
+      id *pointer_to_ivar = (id *)((char *)self + offset);
+
+
+      if (is_atomic == NO)
+	{
+	  /* Note that in this case, we do not RETAIN/AUTORELEASE the
+	     returned value.  The programmer should do it if it is
+	     needed.  Since access is non-atomic, other threads can be
+	     ignored and the caller has full control of what happens
+	     to the object and whether it needs to be RETAINed or not,
+	     so it makes sense to leave the decision to him/her.  This
+	     is also what the Apple/NeXT runtime does.  */
+	  return *pointer_to_ivar;
+	}
+      else
+	{
+	  objc_mutex_t lock = accessors_locks[ACCESSORS_HASH (pointer_to_ivar)];
+	  id result;
+	  
+	  objc_mutex_lock (lock);
+	  result = RETAIN (*(pointer_to_ivar));
+	  objc_mutex_unlock (lock);
+	  
+	  return AUTORELEASE (result);
+	}
+    }
+
+  return nil;
+}
+
+/* The compiler uses this function when implementing some synthesized
+   setters for properties of type 'id'.
+
+   PS: Note how 'should_copy' is declared 'BOOL' but then actually
+   takes values from 0 to 2.  This hack was introduced by Apple; we
+   do the same for compatibility reasons.  */
+void
+objc_setProperty (id self, SEL __attribute__((unused)) _cmd, ptrdiff_t offset, id new_value, BOOL is_atomic, BOOL should_copy)
+{
+  if (self != nil)
+    {
+      id *pointer_to_ivar = (id *)((char *)self + offset);
+      id retained_value;
+#if !OBJC_WITH_GC
+      id old_value;
+#endif
+
+      switch (should_copy)
+	{
+	case 0: /* retain */
+	  {
+	    if (*pointer_to_ivar == new_value)
+	      return;
+	    retained_value = RETAIN (new_value);
+	    break;
+	  }
+	case 2: /* mutable copy */
+	  {
+	    retained_value = MUTABLE_COPY (new_value);
+	    break;
+	  }
+	case 1: /* copy */
+	default:
+	  {
+	    retained_value = COPY (new_value);
+	    break;
+	  }
+	}
+
+      if (is_atomic == NO)
+	{
+#if !OBJC_WITH_GC
+	  old_value = *pointer_to_ivar;
+#endif
+	  *pointer_to_ivar = retained_value;
+	}
+      else
+	{
+	  objc_mutex_t lock = accessors_locks[ACCESSORS_HASH (pointer_to_ivar)];
+
+	  objc_mutex_lock (lock);
+#if !OBJC_WITH_GC
+	  old_value = *pointer_to_ivar;
+#endif
+	  *pointer_to_ivar = retained_value;
+	  objc_mutex_unlock (lock);
+	}
+#if !OBJC_WITH_GC
+      RELEASE (old_value);
+#endif
+    }
+}
+
+/* The compiler uses this function when implementing some synthesized
+   getters for properties of arbitrary C types.  The data is just
+   copied.  Compatibility Note: this function does not exist in the
+   Apple/NeXT runtime.  */
+void
+objc_getPropertyStruct (void *destination, const void *source, ptrdiff_t size, BOOL is_atomic, BOOL __attribute__((unused)) has_strong)
+{
+  if (is_atomic == NO)
+    memcpy (destination, source, size);
+  else
+    {
+      objc_mutex_t lock = accessors_locks[ACCESSORS_HASH (source)];
+
+      objc_mutex_lock (lock);
+      memcpy (destination, source, size);
+      objc_mutex_unlock (lock);
+    }
+}
+
+/* The compiler uses this function when implementing some synthesized
+   setters for properties of arbitrary C types.  The data is just
+   copied.  Compatibility Note: this function does not exist in the
+   Apple/NeXT runtime.  */
+void
+objc_setPropertyStruct (void *destination, const void *source, ptrdiff_t size, BOOL is_atomic, BOOL __attribute__((unused)) has_strong)
+{
+  if (is_atomic == NO)
+    memcpy (destination, source, size);
+  else
+    {
+      objc_mutex_t lock = accessors_locks[ACCESSORS_HASH (destination)];
+
+      objc_mutex_lock (lock);
+      memcpy (destination, source, size);
+      objc_mutex_unlock (lock);
+    }
+}
+
+/* This is the function that the Apple/NeXT runtime has instead of
+   objc_getPropertyStruct and objc_setPropertyStruct.  We include it
+   for API compatibility (just for people who may have used
+   objc_copyStruct on the NeXT runtime thinking it was a public API);
+   the compiler never generates calls to it with the GNU runtime.
+   This function is clumsy because it requires two locks instead of
+   one.  */
+void
+objc_copyStruct (void *destination, const void *source, ptrdiff_t size, BOOL is_atomic, BOOL __attribute__((unused)) has_strong)
+{
+  if (is_atomic == NO)
+    memcpy (destination, source, size);
+  else
+    {
+      /* We don't know which one is the property, so we have to lock
+	 both.  One of them is most likely a temporary buffer in the
+	 local stack and we really wouldn't want to lock it (our
+	 objc_getPropertyStruct and objc_setPropertyStruct functions
+	 don't lock it).  Note that if we're locking more than one
+	 accessor lock at once, we need to always lock them in the
+	 same order to avoid deadlocks.  */
+      objc_mutex_t first_lock;
+      objc_mutex_t second_lock;
+
+      if (ACCESSORS_HASH (source) == ACCESSORS_HASH (destination))
+	{
+	  /* A lucky collision.  */
+	  first_lock = accessors_locks[ACCESSORS_HASH (source)];
+	  objc_mutex_lock (first_lock);
+	  memcpy (destination, source, size);
+	  objc_mutex_unlock (first_lock);
+	  return;
+	}
+
+      if (ACCESSORS_HASH (source) > ACCESSORS_HASH (destination))
+	{
+	  first_lock = accessors_locks[ACCESSORS_HASH (source)];
+	  second_lock = accessors_locks[ACCESSORS_HASH (destination)];
+	}
+      else
+	{
+	  first_lock = accessors_locks[ACCESSORS_HASH (destination)];
+	  second_lock = accessors_locks[ACCESSORS_HASH (source)];	  
+	}
+
+      objc_mutex_lock (first_lock);
+      objc_mutex_lock (second_lock);
+      memcpy (destination, source, size);
+      objc_mutex_unlock (second_lock);
+      objc_mutex_unlock (first_lock);
+    }
+}
diff --git a/libobjc/acinclude.m4 b/libobjc/acinclude.m4
new file mode 100644
index 000000000..581a5f272
--- /dev/null
+++ b/libobjc/acinclude.m4
@@ -0,0 +1,26 @@
+dnl Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2010
+dnl Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl This program is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+dnl PARTICULAR PURPOSE.
+
+m4_include(../config/acx.m4)
+m4_include(../config/no-executables.m4)
+m4_include(../config/enable.m4)
+m4_include(../config/tls.m4)
+
+m4_include(../libtool.m4)
+dnl The lines below arrange for aclocal not to bring an installed
+dnl libtool.m4 into aclocal.m4, while still arranging for automake to
+dnl add a definition of LIBTOOL to Makefile.in.
+ifelse(yes,no,[
+AC_DEFUN([AM_PROG_LIBTOOL],)
+AC_DEFUN([AC_LIBTOOL_DLOPEN],)
+AC_DEFUN([AC_LIBLTDL_CONVENIENCE],)
+AC_SUBST(LIBTOOL)
+])
diff --git a/libobjc/aclocal.m4 b/libobjc/aclocal.m4
new file mode 100644
index 000000000..93a97e31a
--- /dev/null
+++ b/libobjc/aclocal.m4
@@ -0,0 +1,204 @@
+# generated automatically by aclocal 1.11.1 -*- Autoconf -*-
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+# 2005, 2006, 2007, 2008, 2009  Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+# AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
+
+# Copyright (C) 2001, 2003, 2005  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
+# $ac_aux_dir to `$srcdir/foo'.  In other projects, it is set to
+# `$srcdir', `$srcdir/..', or `$srcdir/../..'.
+#
+# Of course, Automake must honor this variable whenever it calls a
+# tool from the auxiliary directory.  The problem is that $srcdir (and
+# therefore $ac_aux_dir as well) can be either absolute or relative,
+# depending on how configure is run.  This is pretty annoying, since
+# it makes $ac_aux_dir quite unusable in subdirectories: in the top
+# source directory, any form will work fine, but in subdirectories a
+# relative path needs to be adjusted first.
+#
+# $ac_aux_dir/missing
+#    fails when called from a subdirectory if $ac_aux_dir is relative
+# $top_srcdir/$ac_aux_dir/missing
+#    fails if $ac_aux_dir is absolute,
+#    fails when called from a subdirectory in a VPATH build with
+#          a relative $ac_aux_dir
+#
+# The reason of the latter failure is that $top_srcdir and $ac_aux_dir
+# are both prefixed by $srcdir.  In an in-source build this is usually
+# harmless because $srcdir is `.', but things will broke when you
+# start a VPATH build or use an absolute $srcdir.
+#
+# So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
+# iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
+#   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
+# and then we would define $MISSING as
+#   MISSING="\${SHELL} $am_aux_dir/missing"
+# This will work as long as MISSING is not called from configure, because
+# unfortunately $(top_srcdir) has no meaning in configure.
+# However there are other variables, like CC, which are often used in
+# configure, and could therefore not use this "fixed" $ac_aux_dir.
+#
+# Another solution, used here, is to always expand $ac_aux_dir to an
+# absolute PATH.  The drawback is that using absolute paths prevent a
+# configured tree to be moved without reconfiguration.
+
+AC_DEFUN([AM_AUX_DIR_EXPAND],
+[dnl Rely on autoconf to set up CDPATH properly.
+AC_PREREQ([2.50])dnl
+# expand $ac_aux_dir to an absolute path
+am_aux_dir=`cd $ac_aux_dir && pwd`
+])
+
+# AM_CONDITIONAL                                            -*- Autoconf -*-
+
+# Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 2006, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 9
+
+# AM_CONDITIONAL(NAME, SHELL-CONDITION)
+# -------------------------------------
+# Define a conditional.
+AC_DEFUN([AM_CONDITIONAL],
+[AC_PREREQ(2.52)dnl
+ ifelse([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
+	[$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
+AC_SUBST([$1_TRUE])dnl
+AC_SUBST([$1_FALSE])dnl
+_AM_SUBST_NOTMAKE([$1_TRUE])dnl
+_AM_SUBST_NOTMAKE([$1_FALSE])dnl
+m4_define([_AM_COND_VALUE_$1], [$2])dnl
+if $2; then
+  $1_TRUE=
+  $1_FALSE='#'
+else
+  $1_TRUE='#'
+  $1_FALSE=
+fi
+AC_CONFIG_COMMANDS_PRE(
+[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
+  AC_MSG_ERROR([[conditional "$1" was never defined.
+Usually this means the macro was only invoked conditionally.]])
+fi])])
+
+# Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
+# From Jim Meyering
+
+# Copyright (C) 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 5
+
+# AM_MAINTAINER_MODE([DEFAULT-MODE])
+# ----------------------------------
+# Control maintainer-specific portions of Makefiles.
+# Default is to disable them, unless `enable' is passed literally.
+# For symmetry, `disable' may be passed as well.  Anyway, the user
+# can override the default with the --enable/--disable switch.
+AC_DEFUN([AM_MAINTAINER_MODE],
+[m4_case(m4_default([$1], [disable]),
+       [enable], [m4_define([am_maintainer_other], [disable])],
+       [disable], [m4_define([am_maintainer_other], [enable])],
+       [m4_define([am_maintainer_other], [enable])
+        m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
+AC_MSG_CHECKING([whether to am_maintainer_other maintainer-specific portions of Makefiles])
+  dnl maintainer-mode's default is 'disable' unless 'enable' is passed
+  AC_ARG_ENABLE([maintainer-mode],
+[  --][am_maintainer_other][-maintainer-mode  am_maintainer_other make rules and dependencies not useful
+			  (and sometimes confusing) to the casual installer],
+      [USE_MAINTAINER_MODE=$enableval],
+      [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
+  AC_MSG_RESULT([$USE_MAINTAINER_MODE])
+  AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
+  MAINT=$MAINTAINER_MODE_TRUE
+  AC_SUBST([MAINT])dnl
+]
+)
+
+AU_DEFUN([jm_MAINTAINER_MODE], [AM_MAINTAINER_MODE])
+
+# Copyright (C) 1999, 2000, 2001, 2003, 2004, 2005, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 6
+
+# AM_PROG_CC_C_O
+# --------------
+# Like AC_PROG_CC_C_O, but changed for automake.
+AC_DEFUN([AM_PROG_CC_C_O],
+[AC_REQUIRE([AC_PROG_CC_C_O])dnl
+AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+AC_REQUIRE_AUX_FILE([compile])dnl
+# FIXME: we rely on the cache variable name because
+# there is no other way.
+set dummy $CC
+am_cc=`echo $[2] | sed ['s/[^a-zA-Z0-9_]/_/g;s/^[0-9]/_/']`
+eval am_t=\$ac_cv_prog_cc_${am_cc}_c_o
+if test "$am_t" != yes; then
+   # Losing compiler, so override with the script.
+   # FIXME: It is wrong to rewrite CC.
+   # But if we don't then we get into trouble of one sort or another.
+   # A longer-term fix would be to have automake use am__CC in this case,
+   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
+   CC="$am_aux_dir/compile $CC"
+fi
+dnl Make sure AC_PROG_CC is never called again, or it will override our
+dnl setting of CC.
+m4_define([AC_PROG_CC],
+          [m4_fatal([AC_PROG_CC cannot be called after AM_PROG_CC_C_O])])
+])
+
+# Copyright (C) 2006, 2008  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 2
+
+# _AM_SUBST_NOTMAKE(VARIABLE)
+# ---------------------------
+# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
+# This macro is traced by Automake.
+AC_DEFUN([_AM_SUBST_NOTMAKE])
+
+# AM_SUBST_NOTMAKE(VARIABLE)
+# ---------------------------
+# Public sister of _AM_SUBST_NOTMAKE.
+AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
+
+m4_include([../ltoptions.m4])
+m4_include([../ltsugar.m4])
+m4_include([../ltversion.m4])
+m4_include([../lt~obsolete.m4])
+m4_include([../config/lthostflags.m4])
+m4_include([../config/multi.m4])
+m4_include([../config/override.m4])
+m4_include([acinclude.m4])
diff --git a/libobjc/archive.c b/libobjc/archive.c
new file mode 100644
index 000000000..f691b13b6
--- /dev/null
+++ b/libobjc/archive.c
@@ -0,0 +1,1656 @@
+ /* GNU Objective C Runtime archiving
+   Copyright (C) 1993, 1995, 1996, 1997, 2002, 2004, 2009,
+   2010 Free Software Foundation, Inc.
+   Contributed by Kresten Krab Thorup
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+/* This file is entirely deprecated and will be removed.  */
+
+#include "objc-private/common.h"
+#include "objc-private/error.h"
+#include "tconfig.h"
+#include "objc/objc-api.h"
+#include "objc/hash.h"
+#include "objc/objc-list.h" 
+#include "objc-private/runtime.h"
+#include "objc/typedstream.h"
+#include "objc/encoding.h"
+#include <stdlib.h>
+
+extern int fflush (FILE *);
+
+#define ROUND(V, A) \
+  ({ typeof (V) __v = (V); typeof (A) __a = (A);  \
+     __a * ((__v + __a - 1)/__a); })
+
+#define PTR2LONG(P) (((char *) (P))-(char *) 0)
+#define LONG2PTR(L) (((char *) 0) + (L))
+
+/* Declare some functions... */
+
+static int
+objc_read_class (struct objc_typed_stream *stream, Class *class);
+
+int objc_sizeof_type (const char *type);
+
+static int
+objc_write_use_common (struct objc_typed_stream *stream, unsigned long key);
+
+static int
+objc_write_register_common (struct objc_typed_stream *stream,
+			    unsigned long key);
+
+static int 
+objc_write_class (struct objc_typed_stream *stream,
+			 struct objc_class *class);
+
+const char *objc_skip_type (const char *type);
+
+static void __objc_finish_write_root_object (struct objc_typed_stream *);
+static void __objc_finish_read_root_object (struct objc_typed_stream *);
+
+static inline int
+__objc_code_unsigned_char (unsigned char *buf, unsigned char val)
+{
+  if ((val&_B_VALUE) == val)
+    {
+      buf[0] = val|_B_SINT;
+      return 1;
+    }
+  else
+    {
+      buf[0] = _B_NINT|0x01;
+      buf[1] = val;
+      return 2;
+    }
+}
+
+int
+objc_write_unsigned_char (struct objc_typed_stream *stream,
+			  unsigned char value)
+{
+  unsigned char buf[sizeof (unsigned char) + 1];
+  int len = __objc_code_unsigned_char (buf, value);
+  return (*stream->write) (stream->physical, (char*)buf, len);
+}
+
+static inline int
+__objc_code_char (unsigned char *buf, signed char val)
+{
+  if (val >= 0)
+    return __objc_code_unsigned_char (buf, val);
+  else
+    {
+      buf[0] = _B_NINT|_B_SIGN|0x01;
+      buf[1] = -val;
+      return 2;
+    }
+}
+
+int
+objc_write_char (struct objc_typed_stream *stream, signed char value)
+{
+  unsigned char buf[sizeof (char) + 1];
+  int len = __objc_code_char (buf, value);
+  return (*stream->write) (stream->physical, (char*)buf, len);
+}
+
+static inline int
+__objc_code_unsigned_short (unsigned char *buf, unsigned short val)
+{
+  if ((val&_B_VALUE) == val)
+    {
+      buf[0] = val|_B_SINT;
+      return 1;
+    }
+  else 
+    {
+      int c, b;
+
+      buf[0] = _B_NINT;
+
+      for (c = sizeof (short); c != 0; c -= 1)
+	if (((val >> (8*(c - 1)))%0x100) != 0)
+	  break;
+
+      buf[0] |= c;
+
+      for (b = 1; c != 0; c--, b++)
+	{
+	  buf[b] = (val >> (8*(c - 1)))%0x100;
+	}
+
+      return b;
+    }
+}
+
+int
+objc_write_unsigned_short (struct objc_typed_stream *stream, 
+			   unsigned short value)
+{
+  unsigned char buf[sizeof (unsigned short) + 1];
+  int len = __objc_code_unsigned_short (buf, value);
+  return (*stream->write) (stream->physical, (char*)buf, len);
+}
+      
+static inline int
+__objc_code_short (unsigned char *buf, short val)
+{
+  int sign = (val < 0);
+  int size = __objc_code_unsigned_short (buf, sign ? -val : val);
+  if (sign)
+    buf[0] |= _B_SIGN;
+  return size;
+}
+
+int
+objc_write_short (struct objc_typed_stream *stream, short value)
+{
+  unsigned char buf[sizeof (short) + 1];
+  int len = __objc_code_short (buf, value);
+  return (*stream->write) (stream->physical, (char*)buf, len);
+}
+      
+
+static inline int
+__objc_code_unsigned_int (unsigned char *buf, unsigned int val)
+{
+  if ((val&_B_VALUE) == val)
+    {
+      buf[0] = val|_B_SINT;
+      return 1;
+    }
+  else 
+    {
+      int c, b;
+
+      buf[0] = _B_NINT;
+
+      for (c = sizeof (int); c != 0; c -= 1)
+	if (((val >> (8*(c - 1)))%0x100) != 0)
+	  break;
+
+      buf[0] |= c;
+
+      for (b = 1; c != 0; c--, b++)
+	{
+	  buf[b] = (val >> (8*(c-1)))%0x100;
+	}
+
+      return b;
+    }
+}
+
+int
+objc_write_unsigned_int (struct objc_typed_stream *stream, unsigned int value)
+{
+  unsigned char buf[sizeof (unsigned int) + 1];
+  int len = __objc_code_unsigned_int (buf, value);
+  return (*stream->write) (stream->physical, (char*)buf, len);
+}
+
+static inline int
+__objc_code_int (unsigned char *buf, int val)
+{
+  int sign = (val < 0);
+  int size = __objc_code_unsigned_int (buf, sign ? -val : val);
+  if (sign)
+    buf[0] |= _B_SIGN;
+  return size;
+}
+
+int
+objc_write_int (struct objc_typed_stream *stream, int value)
+{
+  unsigned char buf[sizeof (int) + 1];
+  int len = __objc_code_int (buf, value);
+  return (*stream->write) (stream->physical, (char*)buf, len);
+}
+
+static inline int
+__objc_code_unsigned_long (unsigned char *buf, unsigned long val)
+{
+  if ((val&_B_VALUE) == val)
+    {
+      buf[0] = val|_B_SINT;
+      return 1;
+    }
+  else 
+    {
+      int c, b;
+
+      buf[0] = _B_NINT;
+
+      for (c = sizeof (long); c != 0; c -= 1)
+	if (((val >> (8*(c - 1)))%0x100) != 0)
+	  break;
+
+      buf[0] |= c;
+
+      for (b = 1; c != 0; c--, b++)
+	{
+	  buf[b] = (val >> (8*(c - 1)))%0x100;
+	}
+
+      return b;
+    }
+}
+
+int
+objc_write_unsigned_long (struct objc_typed_stream *stream, 
+			  unsigned long value)
+{
+  unsigned char buf[sizeof (unsigned long) + 1];
+  int len = __objc_code_unsigned_long (buf, value);
+  return (*stream->write) (stream->physical, (char*)buf, len);
+}
+
+static inline int
+__objc_code_long (unsigned char *buf, long val)
+{
+  int sign = (val < 0);
+  int size = __objc_code_unsigned_long (buf, sign ? -val : val);
+  if (sign)
+    buf[0] |= _B_SIGN;
+  return size;
+}
+
+int
+objc_write_long (struct objc_typed_stream *stream, long value)
+{
+  unsigned char buf[sizeof (long) + 1];
+  int len = __objc_code_long (buf, value);
+  return (*stream->write) (stream->physical, (char*)buf, len);
+}
+
+
+int
+objc_write_string (struct objc_typed_stream *stream,
+		   const unsigned char *string, unsigned int nbytes)
+{
+  unsigned char buf[sizeof (unsigned int) + 1];
+  int len = __objc_code_unsigned_int (buf, nbytes);
+  
+  if ((buf[0]&_B_CODE) == _B_SINT)
+    buf[0] = (buf[0]&_B_VALUE)|_B_SSTR;
+
+  else /* _B_NINT */
+    buf[0] = (buf[0]&_B_VALUE)|_B_NSTR;
+
+  if ((*stream->write) (stream->physical, (char*)buf, len) != 0)
+    return (*stream->write) (stream->physical, (char*)string, nbytes);
+  else
+    return 0;
+}
+
+int
+objc_write_string_atomic (struct objc_typed_stream *stream,
+			  unsigned char *string, unsigned int nbytes)
+{
+  unsigned long key;
+  if ((key = PTR2LONG(objc_hash_value_for_key (stream->stream_table, string))))
+    return objc_write_use_common (stream, key);
+  else
+    {
+      int length;
+      objc_hash_add (&stream->stream_table,
+		     LONG2PTR(key=PTR2LONG(string)), string);
+      if ((length = objc_write_register_common (stream, key)))
+	return objc_write_string (stream, string, nbytes);
+      return length;
+    }
+}
+
+static int
+objc_write_register_common (struct objc_typed_stream *stream, 
+			    unsigned long key)
+{
+  unsigned char buf[sizeof (unsigned long)+2];
+  int len = __objc_code_unsigned_long (buf + 1, key);
+  if (len == 1)
+    {
+      buf[0] = _B_RCOMM|0x01;
+      buf[1] &= _B_VALUE;
+      return (*stream->write) (stream->physical, (char*)buf, len + 1);
+    }
+  else
+    {
+      buf[1] = (buf[1]&_B_VALUE)|_B_RCOMM;
+      return (*stream->write) (stream->physical, (char*)buf + 1, len);
+    }
+}
+
+static int
+objc_write_use_common (struct objc_typed_stream *stream, unsigned long key)
+{
+  unsigned char buf[sizeof (unsigned long)+2];
+  int len = __objc_code_unsigned_long (buf + 1, key);
+  if (len == 1)
+    {
+      buf[0] = _B_UCOMM|0x01;
+      buf[1] &= _B_VALUE;
+      return (*stream->write) (stream->physical, (char*)buf, 2);
+    }
+  else
+    {
+      buf[1] = (buf[1]&_B_VALUE)|_B_UCOMM;
+      return (*stream->write) (stream->physical, (char*)buf + 1, len);
+    }
+}
+
+static inline int
+__objc_write_extension (struct objc_typed_stream *stream, unsigned char code)
+{
+  if (code <= _B_VALUE)
+    {
+      unsigned char buf = code|_B_EXT;
+      return (*stream->write) (stream->physical, (char*)&buf, 1);
+    }
+  else 
+    {
+      _objc_abort ("__objc_write_extension: bad opcode %c\n", code);
+      return -1;
+    }
+}
+
+int
+__objc_write_object (struct objc_typed_stream *stream, id object)
+{
+  unsigned char buf = '\0';
+  SEL write_sel = sel_get_any_uid ("write:");
+  if (object)
+    {
+      __objc_write_extension (stream, _BX_OBJECT);
+      objc_write_class (stream, object->class_pointer);
+      (*objc_msg_lookup (object, write_sel)) (object, write_sel, stream);
+      return (*stream->write) (stream->physical, (char*)&buf, 1);
+    }
+  else
+    return objc_write_use_common (stream, 0);
+}
+
+int 
+objc_write_object_reference (struct objc_typed_stream *stream, id object)
+{
+  unsigned long key;
+  if ((key = PTR2LONG(objc_hash_value_for_key (stream->object_table, object))))
+    return objc_write_use_common (stream, key);
+
+  __objc_write_extension (stream, _BX_OBJREF);
+  return objc_write_unsigned_long (stream, PTR2LONG (object));
+}
+
+int 
+objc_write_root_object (struct objc_typed_stream *stream, id object)
+{
+  int len = 0;
+  if (stream->writing_root_p)
+    _objc_abort ("objc_write_root_object called recursively");
+  else
+    {
+      stream->writing_root_p = 1;
+      __objc_write_extension (stream, _BX_OBJROOT);
+      if ((len = objc_write_object (stream, object)))
+	__objc_finish_write_root_object (stream);
+      stream->writing_root_p = 0;
+    }
+  return len;
+}
+
+int 
+objc_write_object (struct objc_typed_stream *stream, id object)
+{
+  unsigned long key;
+  if ((key = PTR2LONG(objc_hash_value_for_key (stream->object_table, object))))
+    return objc_write_use_common (stream, key);
+
+  else if (object == nil)
+    return objc_write_use_common (stream, 0);
+
+  else
+    {
+      int length;
+      objc_hash_add (&stream->object_table,
+		     LONG2PTR(key=PTR2LONG(object)), object);
+      if ((length = objc_write_register_common (stream, key)))
+	return __objc_write_object (stream, object);
+      return length;
+    }
+}
+
+int
+__objc_write_class (struct objc_typed_stream *stream, struct objc_class *class)
+{
+  __objc_write_extension (stream, _BX_CLASS);
+  objc_write_string_atomic (stream, (unsigned char *) class->name,
+			   strlen ((char *) class->name));
+  return objc_write_unsigned_long (stream, class->version);
+}
+
+
+static int 
+objc_write_class (struct objc_typed_stream *stream,
+			 struct objc_class *class)
+{
+  unsigned long key;
+  if ((key = PTR2LONG(objc_hash_value_for_key (stream->stream_table, class))))
+    return objc_write_use_common (stream, key);
+  else
+    {
+      int length;
+      objc_hash_add (&stream->stream_table,
+		     LONG2PTR(key = PTR2LONG(class)), class);
+      if ((length = objc_write_register_common (stream, key)))
+	return __objc_write_class (stream, class);
+      return length;
+    }
+}
+
+
+int 
+__objc_write_selector (struct objc_typed_stream *stream, SEL selector)
+{
+  const char *sel_name;
+  __objc_write_extension (stream, _BX_SEL);
+  /* to handle NULL selectors */
+  if ((SEL)0 == selector)
+    return objc_write_string (stream, (unsigned char*)"", 0);
+  sel_name = sel_get_name (selector);
+  return objc_write_string (stream, (unsigned char*)sel_name, strlen ((char*)sel_name));
+}
+
+int 
+objc_write_selector (struct objc_typed_stream *stream, SEL selector)
+{
+  const char *sel_name;
+  unsigned long key;
+
+  /* to handle NULL selectors */
+  if ((SEL)0 == selector)
+    return __objc_write_selector (stream, selector);
+
+  sel_name = sel_get_name (selector);
+  if ((key = PTR2LONG(objc_hash_value_for_key (stream->stream_table,
+					       sel_name))))
+    return objc_write_use_common (stream, key);
+  else
+    {
+      int length;
+      objc_hash_add (&stream->stream_table, 
+		LONG2PTR(key = PTR2LONG(sel_name)), (char *) sel_name);
+      if ((length = objc_write_register_common (stream, key)))
+	return __objc_write_selector (stream, selector);
+      return length;
+    }
+}
+
+
+
+/*
+** Read operations 
+*/
+
+int
+objc_read_char (struct objc_typed_stream *stream, char *val)
+{
+  unsigned char buf;
+  int len;
+  len = (*stream->read) (stream->physical, (char*)&buf, 1);
+  if (len != 0)
+    {
+      if ((buf & _B_CODE) == _B_SINT)
+	(*val) = (buf & _B_VALUE);
+
+      else if ((buf & _B_NUMBER) == 1)
+	{
+	  len = (*stream->read) (stream->physical, val, 1);
+	  if (buf&_B_SIGN)
+	    (*val) = -1 * (*val);
+	}
+
+      else
+	_objc_abort ("expected 8bit signed int, got %dbit int",
+		     (int) (buf&_B_NUMBER)*8);
+    }
+  return len;
+}
+
+
+int
+objc_read_unsigned_char (struct objc_typed_stream *stream, unsigned char *val)
+{
+  unsigned char buf;
+  int len;
+  if ((len = (*stream->read) (stream->physical, (char*)&buf, 1)))
+    {
+      if ((buf & _B_CODE) == _B_SINT)
+	(*val) = (buf & _B_VALUE);
+
+      else if ((buf & _B_NUMBER) == 1)
+	len = (*stream->read) (stream->physical, (char*)val, 1);
+
+      else
+	_objc_abort ("expected 8bit unsigned int, got %dbit int",
+		     (int) (buf&_B_NUMBER)*8);
+    }
+  return len;
+}
+
+int
+objc_read_short (struct objc_typed_stream *stream, short *value)
+{
+  unsigned char buf[sizeof (short) + 1];
+  int len;
+  if ((len = (*stream->read) (stream->physical, (char*)buf, 1)))
+    {
+      if ((buf[0] & _B_CODE) == _B_SINT)
+	(*value) = (buf[0] & _B_VALUE);
+
+      else
+	{
+	  int pos = 1;
+	  int nbytes = buf[0] & _B_NUMBER;
+	  if (nbytes > (int) sizeof (short))
+	    _objc_abort ("expected short, got bigger (%dbits)", nbytes*8);
+	  len = (*stream->read) (stream->physical, (char*)buf + 1, nbytes);
+	  (*value) = 0;
+	  while (pos <= nbytes)
+	    (*value) = ((*value)*0x100) + buf[pos++];
+	  if (buf[0] & _B_SIGN)
+	    (*value) = -(*value);
+	}
+    }
+  return len;
+}
+
+int
+objc_read_unsigned_short (struct objc_typed_stream *stream,
+			  unsigned short *value)
+{
+  unsigned char buf[sizeof (unsigned short) + 1];
+  int len;
+  if ((len = (*stream->read) (stream->physical, (char*)buf, 1)))
+    {
+      if ((buf[0] & _B_CODE) == _B_SINT)
+	(*value) = (buf[0] & _B_VALUE);
+
+      else
+	{
+	  int pos = 1;
+	  int nbytes = buf[0] & _B_NUMBER;
+	  if (nbytes > (int) sizeof (short))
+	    _objc_abort ("expected short, got int or bigger");
+	  len = (*stream->read) (stream->physical, (char*)buf + 1, nbytes);
+	  (*value) = 0;
+	  while (pos <= nbytes)
+	    (*value) = ((*value)*0x100) + buf[pos++];
+	}
+    }
+  return len;
+}
+
+
+int
+objc_read_int (struct objc_typed_stream *stream, int *value)
+{
+  unsigned char buf[sizeof (int) + 1];
+  int len;
+  if ((len = (*stream->read) (stream->physical, (char*)buf, 1)))
+    {
+      if ((buf[0] & _B_CODE) == _B_SINT)
+	(*value) = (buf[0] & _B_VALUE);
+
+      else
+	{
+	  int pos = 1;
+	  int nbytes = buf[0] & _B_NUMBER;
+	  if (nbytes > (int) sizeof (int))
+	    _objc_abort ("expected int, got bigger");
+	  len = (*stream->read) (stream->physical, (char*)buf + 1, nbytes);
+	  (*value) = 0;
+	  while (pos <= nbytes)
+	    (*value) = ((*value)*0x100) + buf[pos++];
+	  if (buf[0] & _B_SIGN)
+	    (*value) = -(*value);
+	}
+    }
+  return len;
+}
+
+int
+objc_read_long (struct objc_typed_stream *stream, long *value)
+{
+  unsigned char buf[sizeof (long) + 1];
+  int len;
+  if ((len = (*stream->read) (stream->physical, (char*)buf, 1)))
+    {
+      if ((buf[0] & _B_CODE) == _B_SINT)
+	(*value) = (buf[0] & _B_VALUE);
+
+      else
+	{
+	  int pos = 1;
+	  int nbytes = buf[0] & _B_NUMBER;
+	  if (nbytes > (int) sizeof (long))
+	    _objc_abort ("expected long, got bigger");
+	  len = (*stream->read) (stream->physical, (char*)buf + 1, nbytes);
+	  (*value) = 0;
+	  while (pos <= nbytes)
+	    (*value) = ((*value)*0x100) + buf[pos++];
+	  if (buf[0] & _B_SIGN)
+	    (*value) = -(*value);
+	}
+    }
+  return len;
+}
+
+int
+__objc_read_nbyte_uint (struct objc_typed_stream *stream,
+			unsigned int nbytes, unsigned int *val)
+{
+  int len;
+  unsigned int pos = 0;
+  unsigned char buf[sizeof (unsigned int) + 1];
+
+  if (nbytes > sizeof (int))
+    _objc_abort ("expected int, got bigger");
+
+  len = (*stream->read) (stream->physical, (char*)buf, nbytes);
+  (*val) = 0;
+  while (pos < nbytes)
+    (*val) = ((*val)*0x100) + buf[pos++];
+  return len;
+}
+  
+
+int
+objc_read_unsigned_int (struct objc_typed_stream *stream,
+			unsigned int *value)
+{
+  unsigned char buf[sizeof (unsigned int) + 1];
+  int len;
+  if ((len = (*stream->read) (stream->physical, (char*)buf, 1)))
+    {
+      if ((buf[0] & _B_CODE) == _B_SINT)
+	(*value) = (buf[0] & _B_VALUE);
+
+      else
+	len = __objc_read_nbyte_uint (stream, (buf[0] & _B_VALUE), value);
+
+    }
+  return len;
+}
+
+int
+__objc_read_nbyte_ulong (struct objc_typed_stream *stream,
+		       unsigned int nbytes, unsigned long *val)
+{
+  int len;
+  unsigned int pos = 0;
+  unsigned char buf[sizeof (unsigned long) + 1];
+
+  if (nbytes > sizeof (long))
+    _objc_abort ("expected long, got bigger");
+
+  len = (*stream->read) (stream->physical, (char*)buf, nbytes);
+  (*val) = 0;
+  while (pos < nbytes)
+    (*val) = ((*val)*0x100) + buf[pos++];
+  return len;
+}
+  
+
+int
+objc_read_unsigned_long (struct objc_typed_stream *stream,
+			 unsigned long *value)
+{
+  unsigned char buf[sizeof (unsigned long) + 1];
+  int len;
+  if ((len = (*stream->read) (stream->physical, (char*)buf, 1)))
+    {
+      if ((buf[0] & _B_CODE) == _B_SINT)
+	(*value) = (buf[0] & _B_VALUE);
+
+      else
+	len = __objc_read_nbyte_ulong (stream, (buf[0] & _B_VALUE), value);
+
+    }
+  return len;
+}
+
+int
+objc_read_string (struct objc_typed_stream *stream,
+		  char **string)
+{
+  unsigned char buf[sizeof (unsigned int) + 1];
+  int len;
+  if ((len = (*stream->read) (stream->physical, (char*)buf, 1)))
+    {
+      unsigned long key = 0;
+
+      if ((buf[0]&_B_CODE) == _B_RCOMM)	/* register following */
+	{
+	  len = __objc_read_nbyte_ulong (stream, (buf[0] & _B_VALUE), &key);
+	  len = (*stream->read) (stream->physical, (char*)buf, 1);
+	}
+
+      switch (buf[0]&_B_CODE) {
+      case _B_SSTR:
+	{
+	  int length = buf[0]&_B_VALUE;
+	  (*string) = (char*)objc_malloc (length + 1);
+	  if (key)
+	    objc_hash_add (&stream->stream_table, LONG2PTR(key), *string);
+	  len = (*stream->read) (stream->physical, *string, length);
+	  (*string)[length] = '\0';
+	}
+	break;
+
+      case _B_UCOMM:
+	{
+	  char *tmp;
+	  len = __objc_read_nbyte_ulong (stream, (buf[0] & _B_VALUE), &key);
+	  tmp = objc_hash_value_for_key (stream->stream_table, LONG2PTR (key));
+	  *string = objc_malloc (strlen (tmp) + 1);
+	  strcpy (*string, tmp);
+	}
+	break;
+
+      case _B_NSTR:
+	{
+	  unsigned int nbytes = buf[0]&_B_VALUE;
+	  len = __objc_read_nbyte_uint (stream, nbytes, &nbytes);
+	  if (len) {
+	    (*string) = (char*)objc_malloc (nbytes + 1);
+	    if (key)
+	      objc_hash_add (&stream->stream_table, LONG2PTR(key), *string);
+	    len = (*stream->read) (stream->physical, *string, nbytes);
+	    (*string)[nbytes] = '\0';
+	  }
+	}
+	break;
+	
+      default:
+	_objc_abort ("expected string, got opcode %c\n", (buf[0]&_B_CODE));
+      }
+    }
+
+  return len;
+}
+
+
+int
+objc_read_object (struct objc_typed_stream *stream, id *object)
+{
+  unsigned char buf[sizeof (unsigned int)];
+  int len;
+  if ((len = (*stream->read) (stream->physical, (char*)buf, 1)))
+    {
+      SEL read_sel = sel_get_any_uid ("read:");
+      unsigned long key = 0;
+
+      if ((buf[0]&_B_CODE) == _B_RCOMM)	/* register common */
+	{
+	  len = __objc_read_nbyte_ulong (stream, (buf[0] & _B_VALUE), &key);
+	  len = (*stream->read) (stream->physical, (char*)buf, 1);
+	}
+
+      if (buf[0] == (_B_EXT | _BX_OBJECT))
+	{
+	  Class class;
+
+	  /* get class */
+	  len = objc_read_class (stream, &class);
+
+	  /* create instance */
+	  (*object) = class_create_instance (class);
+
+	  /* register? */
+	  if (key)
+	    objc_hash_add (&stream->object_table, LONG2PTR(key), *object);
+
+	  /* send -read: */
+	  if (__objc_responds_to (*object, read_sel))
+	    (*get_imp (class, read_sel)) (*object, read_sel, stream);
+
+	  /* check null-byte */
+	  len = (*stream->read) (stream->physical, (char*)buf, 1);
+	  if (buf[0] != '\0')
+	    _objc_abort ("expected null-byte, got opcode %c", buf[0]);
+	}
+
+      else if ((buf[0]&_B_CODE) == _B_UCOMM)
+	{
+	  if (key)
+	    _objc_abort ("cannot register use upcode...");
+	  len = __objc_read_nbyte_ulong (stream, (buf[0] & _B_VALUE), &key);
+	  (*object) = objc_hash_value_for_key (stream->object_table,
+					       LONG2PTR(key));
+	}
+
+      else if (buf[0] == (_B_EXT | _BX_OBJREF))	/* a forward reference */
+	{
+	  struct objc_list *other;
+	  len = objc_read_unsigned_long (stream, &key);
+	  other 
+	    = (struct objc_list *) objc_hash_value_for_key (stream->object_refs, 
+							   LONG2PTR(key));
+	  objc_hash_add (&stream->object_refs, LONG2PTR(key), 
+			 (void *)list_cons (object, other));
+	}
+
+      else if (buf[0] == (_B_EXT | _BX_OBJROOT)) /* a root object */
+	{
+	  if (key)
+	    _objc_abort ("cannot register root object...");
+	  len = objc_read_object (stream, object);
+	  __objc_finish_read_root_object (stream);
+	}
+
+      else
+	_objc_abort ("expected object, got opcode %c", buf[0]);
+    }
+  return len;
+}
+
+static int
+objc_read_class (struct objc_typed_stream *stream, Class *class)
+{
+  unsigned char buf[sizeof (unsigned int)];
+  int len;
+  if ((len = (*stream->read) (stream->physical, (char*)buf, 1)))
+    {
+      unsigned long key = 0;
+
+      if ((buf[0]&_B_CODE) == _B_RCOMM)	/* register following */
+	{
+	  len = __objc_read_nbyte_ulong (stream, (buf[0] & _B_VALUE), &key);
+	  len = (*stream->read) (stream->physical, (char*)buf, 1);
+	}
+
+      if (buf[0] == (_B_EXT | _BX_CLASS))
+	{
+	  char temp[1] = "";
+	  char *class_name = temp;
+	  unsigned long version;
+
+	  /* get class */
+	  len = objc_read_string (stream, &class_name);
+	  (*class) = objc_get_class (class_name);
+	  objc_free (class_name);
+
+	  /* register */
+	  if (key)
+	    objc_hash_add (&stream->stream_table, LONG2PTR(key), *class);
+
+	  objc_read_unsigned_long (stream, &version);
+	  objc_hash_add (&stream->class_table,
+			 (*class)->name, (void *) ((size_t) version));
+	}
+
+      else if ((buf[0]&_B_CODE) == _B_UCOMM)
+	{
+	  if (key)
+	    _objc_abort ("cannot register use upcode...");
+	  len = __objc_read_nbyte_ulong (stream, (buf[0] & _B_VALUE), &key);
+	  *class = objc_hash_value_for_key (stream->stream_table,
+					    LONG2PTR(key));
+	  if (! *class)
+	    _objc_abort ("cannot find class for key %lu", key);
+	}
+
+      else
+	_objc_abort ("expected class, got opcode %c", buf[0]);
+    }
+  return len;
+}
+
+int
+objc_read_selector (struct objc_typed_stream *stream, SEL* selector)
+{
+  unsigned char buf[sizeof (unsigned int)];
+  int len;
+  if ((len = (*stream->read) (stream->physical, (char*)buf, 1)))
+    {
+      unsigned long key = 0;
+
+      if ((buf[0]&_B_CODE) == _B_RCOMM)	/* register following */
+	{
+	  len = __objc_read_nbyte_ulong (stream, (buf[0] & _B_VALUE), &key);
+	  len = (*stream->read) (stream->physical, (char*)buf, 1);
+	}
+
+      if (buf[0] == (_B_EXT|_BX_SEL)) /* selector! */
+	{
+	  char temp[1] = "";
+	  char *selector_name = temp;
+
+	  /* get selector */
+	  len = objc_read_string (stream, &selector_name);
+	  /* To handle NULL selectors */
+	  if (0 == strlen (selector_name))
+	    {
+	      (*selector) = (SEL)0;
+	      return 0;
+	    }
+	  else 
+	    (*selector) = sel_get_any_uid (selector_name);
+	  objc_free (selector_name);
+
+	  /* register */
+	  if (key)
+	    objc_hash_add (&stream->stream_table,
+			   LONG2PTR(key), (void *) *selector);
+	}
+
+      else if ((buf[0]&_B_CODE) == _B_UCOMM)
+	{
+	  if (key)
+	    _objc_abort ("cannot register use upcode...");
+	  len = __objc_read_nbyte_ulong (stream, (buf[0] & _B_VALUE), &key);
+	  (*selector) = objc_hash_value_for_key (stream->stream_table, 
+						 LONG2PTR(key));
+	}
+
+      else
+	_objc_abort ("expected selector, got opcode %c", buf[0]);
+    }
+  return len;
+}
+
+/*
+** USER LEVEL FUNCTIONS
+*/
+
+/*
+** Write one object, encoded in TYPE and pointed to by DATA to the
+** typed stream STREAM.  
+*/
+
+int
+objc_write_type (TypedStream *stream, const char *type, const void *data)
+{
+  switch (*type) {
+  case _C_ID:
+    return objc_write_object (stream, *(id *) data);
+    break;
+
+  case _C_CLASS:
+    return objc_write_class (stream, *(Class *) data);
+    break;
+
+  case _C_SEL:
+    return objc_write_selector (stream, *(SEL *) data);
+    break;
+
+  case _C_CHR:
+    return objc_write_char (stream, *(signed char *) data);
+    break;
+    
+  case _C_UCHR:
+    return objc_write_unsigned_char (stream, *(unsigned char *) data);
+    break;
+
+  case _C_SHT:
+    return objc_write_short (stream, *(short *) data);
+    break;
+
+  case _C_USHT:
+    return objc_write_unsigned_short (stream, *(unsigned short *) data);
+    break;
+
+  case _C_INT:
+    return objc_write_int (stream, *(int *) data);
+    break;
+
+  case _C_UINT:
+    return objc_write_unsigned_int (stream, *(unsigned int *) data);
+    break;
+
+  case _C_LNG:
+    return objc_write_long (stream, *(long *) data);
+    break;
+
+  case _C_ULNG:
+    return objc_write_unsigned_long (stream, *(unsigned long *) data);
+    break;
+
+  case _C_CHARPTR:
+    return objc_write_string (stream,
+			      *(unsigned char **) data, strlen (*(char **) data));
+    break;
+
+  case _C_ATOM:
+    return objc_write_string_atomic (stream, *(unsigned char **) data, 
+				     strlen (*(char **) data));
+    break;
+
+  case _C_ARY_B:
+    {
+      int len = atoi (type + 1);
+      while (isdigit ((unsigned char) *++type))
+	;
+      return objc_write_array (stream, type, len, data);
+    }
+    break; 
+
+  case _C_STRUCT_B:
+    {
+      int acc_size = 0;
+      int align;
+      while (*type != _C_STRUCT_E && *type++ != '=')
+	; /* skip "<name>=" */
+      while (*type != _C_STRUCT_E)
+	{
+	  align = objc_alignof_type (type);       /* padd to alignment */
+	  acc_size = ROUND (acc_size, align);
+	  objc_write_type (stream, type, ((char *) data) + acc_size);
+	  acc_size += objc_sizeof_type (type);   /* add component size */
+	  type = objc_skip_typespec (type);	 /* skip component */
+	}
+      return 1;
+    }
+
+  default:
+    {
+      _objc_abort ("objc_write_type: cannot parse typespec: %s\n", type);
+      return 0;
+    }
+  }
+}
+
+/*
+** Read one object, encoded in TYPE and pointed to by DATA to the
+** typed stream STREAM.  DATA specifies the address of the types to
+** read.  Expected type is checked against the type actually present
+** on the stream. 
+*/
+
+int
+objc_read_type(TypedStream *stream, const char *type, void *data)
+{
+  char c;
+  switch (c = *type) {
+  case _C_ID:
+    return objc_read_object (stream, (id*)data);
+    break;
+
+  case _C_CLASS:
+    return objc_read_class (stream, (Class*)data);
+    break;
+
+  case _C_SEL:
+    return objc_read_selector (stream, (SEL*)data);
+    break;
+
+  case _C_CHR:
+    return objc_read_char (stream, (char*)data);
+    break;
+    
+  case _C_UCHR:
+    return objc_read_unsigned_char (stream, (unsigned char*)data);
+    break;
+
+  case _C_SHT:
+    return objc_read_short (stream, (short*)data);
+    break;
+
+  case _C_USHT:
+    return objc_read_unsigned_short (stream, (unsigned short*)data);
+    break;
+
+  case _C_INT:
+    return objc_read_int (stream, (int*)data);
+    break;
+
+  case _C_UINT:
+    return objc_read_unsigned_int (stream, (unsigned int*)data);
+    break;
+
+  case _C_LNG:
+    return objc_read_long (stream, (long*)data);
+    break;
+
+  case _C_ULNG:
+    return objc_read_unsigned_long (stream, (unsigned long*)data);
+    break;
+
+  case _C_CHARPTR:
+  case _C_ATOM:
+    return objc_read_string (stream, (char**)data);
+    break;
+
+  case _C_ARY_B:
+    {
+      int len = atoi (type + 1);
+      while (isdigit ((unsigned char) *++type))
+	;
+      return objc_read_array (stream, type, len, data);
+    }
+    break; 
+
+  case _C_STRUCT_B:
+    {
+      int acc_size = 0;
+      int align;
+      while (*type != _C_STRUCT_E && *type++ != '=')
+	; /* skip "<name>=" */
+      while (*type != _C_STRUCT_E)
+	{
+	  align = objc_alignof_type (type);       /* padd to alignment */
+	  acc_size = ROUND (acc_size, align);
+	  objc_read_type (stream, type, ((char*)data)+acc_size);
+	  acc_size += objc_sizeof_type (type);   /* add component size */
+	  type = objc_skip_typespec (type);	 /* skip component */
+	}
+      return 1;
+    }
+
+  default:
+    {
+      _objc_abort ("objc_read_type: cannot parse typespec: %s\n", type);
+      return 0;
+    }
+  }
+}
+
+/*
+** Write the object specified by the template TYPE to STREAM.  Last
+** arguments specify addresses of values to be written.  It might 
+** seem surprising to specify values by address, but this is extremely
+** convenient for copy-paste with objc_read_types calls.  A more
+** down-to-the-earth cause for this passing of addresses is that values
+** of arbitrary size is not well supported in ANSI C for functions with
+** variable number of arguments.
+*/
+
+int 
+objc_write_types (TypedStream *stream, const char *type, ...)
+{
+  va_list args;
+  const char *c;
+  int res = 0;
+
+  va_start(args, type);
+
+  for (c = type; *c; c = objc_skip_typespec (c))
+    {
+      switch (*c) {
+      case _C_ID:
+	res = objc_write_object (stream, *va_arg (args, id*));
+	break;
+
+      case _C_CLASS:
+	res = objc_write_class (stream, *va_arg (args, Class*));
+	break;
+
+      case _C_SEL:
+	res = objc_write_selector (stream, *va_arg (args, SEL*));
+	break;
+	
+      case _C_CHR:
+	res = objc_write_char (stream, *va_arg (args, char*));
+	break;
+	
+      case _C_UCHR:
+	res = objc_write_unsigned_char (stream,
+					*va_arg (args, unsigned char*));
+	break;
+	
+      case _C_SHT:
+	res = objc_write_short (stream, *va_arg (args, short*));
+	break;
+
+      case _C_USHT:
+	res = objc_write_unsigned_short (stream,
+					 *va_arg (args, unsigned short*));
+	break;
+
+      case _C_INT:
+	res = objc_write_int(stream, *va_arg (args, int*));
+	break;
+	
+      case _C_UINT:
+	res = objc_write_unsigned_int(stream, *va_arg (args, unsigned int*));
+	break;
+
+      case _C_LNG:
+	res = objc_write_long(stream, *va_arg (args, long*));
+	break;
+	
+      case _C_ULNG:
+	res = objc_write_unsigned_long(stream, *va_arg (args, unsigned long*));
+	break;
+
+      case _C_CHARPTR:
+	{
+	  unsigned char **str = va_arg (args, unsigned char **);
+	  res = objc_write_string (stream, *str, strlen ((char*)*str));
+	}
+	break;
+
+      case _C_ATOM:
+	{
+	  unsigned char **str = va_arg (args, unsigned char **);
+	  res = objc_write_string_atomic (stream, *str, strlen ((char*)*str));
+	}
+	break;
+
+      case _C_ARY_B:
+	{
+	  int len = atoi (c + 1);
+	  const char *t = c;
+	  while (isdigit ((unsigned char) *++t))
+	    ;
+	  res = objc_write_array (stream, t, len, va_arg (args, void *));
+	  t = objc_skip_typespec (t);
+	  if (*t != _C_ARY_E)
+	    _objc_abort ("expected `]', got: %s", t);
+	}
+	break; 
+	
+      default:
+	_objc_abort ("objc_write_types: cannot parse typespec: %s\n", type);
+      }
+    }
+  va_end(args);
+  return res;
+}
+
+
+/* 
+** Last arguments specify addresses of values to be read.  Expected
+** type is checked against the type actually present on the stream. 
+*/
+
+int 
+objc_read_types(TypedStream *stream, const char *type, ...)
+{
+  va_list args;
+  const char *c;
+  int res = 0;
+
+  va_start (args, type);
+
+  for (c = type; *c; c = objc_skip_typespec(c))
+    {
+      switch (*c) {
+      case _C_ID:
+	res = objc_read_object(stream, va_arg (args, id*));
+	break;
+
+      case _C_CLASS:
+	res = objc_read_class(stream, va_arg (args, Class*));
+	break;
+
+      case _C_SEL:
+	res = objc_read_selector(stream, va_arg (args, SEL*));
+	break;
+	
+      case _C_CHR:
+	res = objc_read_char(stream, va_arg (args, char*));
+	break;
+	
+      case _C_UCHR:
+	res = objc_read_unsigned_char(stream, va_arg (args, unsigned char*));
+	break;
+	
+      case _C_SHT:
+	res = objc_read_short(stream, va_arg (args, short*));
+	break;
+
+      case _C_USHT:
+	res = objc_read_unsigned_short(stream, va_arg (args, unsigned short*));
+	break;
+
+      case _C_INT:
+	res = objc_read_int(stream, va_arg (args, int*));
+	break;
+	
+      case _C_UINT:
+	res = objc_read_unsigned_int(stream, va_arg (args, unsigned int*));
+	break;
+
+      case _C_LNG:
+	res = objc_read_long(stream, va_arg (args, long*));
+	break;
+	
+      case _C_ULNG:
+	res = objc_read_unsigned_long(stream, va_arg (args, unsigned long*));
+	break;
+
+      case _C_CHARPTR:
+      case _C_ATOM:
+	{
+	  char **str = va_arg (args, char **);
+	  res = objc_read_string (stream, str);
+	}
+	break;
+
+      case _C_ARY_B:
+	{
+	  int len = atoi (c + 1);
+	  const char *t = c;
+	  while (isdigit ((unsigned char) *++t))
+	    ;
+	  res = objc_read_array (stream, t, len, va_arg (args, void *));
+	  t = objc_skip_typespec (t);
+	  if (*t != _C_ARY_E)
+	    _objc_abort ("expected `]', got: %s", t);
+	}
+	break; 
+	
+      default:
+	_objc_abort ("objc_read_types: cannot parse typespec: %s\n", type);
+      }
+    }
+  va_end (args);
+  return res;
+}
+
+/*
+** Write an array of COUNT elements of TYPE from the memory address DATA.
+** This is equivalent of objc_write_type (stream, "[N<type>]", data)
+*/
+
+int
+objc_write_array (TypedStream *stream, const char *type,
+		  int count, const void *data)
+{
+  int off = objc_sizeof_type(type);
+  const char *where = data;
+
+  while (count-- > 0)
+    {
+      objc_write_type(stream, type, where);
+      where += off;
+    }
+  return 1;
+}
+
+/*
+** Read an array of COUNT elements of TYPE into the memory address
+** DATA.  The memory pointed to by data is supposed to be allocated
+** by the callee.  This is equivalent of 
+**   objc_read_type (stream, "[N<type>]", data)
+*/
+
+int
+objc_read_array (TypedStream *stream, const char *type,
+		 int count, void *data)
+{
+  int off = objc_sizeof_type(type);
+  char *where = (char*)data;
+
+  while (count-- > 0)
+    {
+      objc_read_type(stream, type, where);
+      where += off;
+    }
+  return 1;
+}
+
+static int 
+__objc_fread (FILE *file, char *data, int len)
+{
+  return fread(data, len, 1, file);
+}
+
+static int 
+__objc_fwrite (FILE *file, char *data, int len)
+{
+  return fwrite(data, len, 1, file);
+}
+
+static int
+__objc_feof (FILE *file)
+{
+  return feof(file);
+}
+
+static int 
+__objc_no_write (FILE *file __attribute__ ((__unused__)),
+		 const char *data __attribute__ ((__unused__)),
+		 int len __attribute__ ((__unused__)))
+{
+  _objc_abort ("TypedStream not open for writing");
+  return 0;
+}
+
+static int 
+__objc_no_read (FILE *file __attribute__ ((__unused__)),
+		const char *data __attribute__ ((__unused__)),
+		int len __attribute__ ((__unused__)))
+{
+  _objc_abort ("TypedStream not open for reading");
+  return 0;
+}
+
+static int
+__objc_read_typed_stream_signature (TypedStream *stream)
+{
+  char buffer[80];
+  int pos = 0;
+  do
+    (*stream->read) (stream->physical, buffer+pos, 1);
+  while (buffer[pos++] != '\0')
+    ;
+  sscanf (buffer, "GNU TypedStream %d", &stream->version);
+  if (stream->version != OBJC_TYPED_STREAM_VERSION)
+    _objc_abort ("cannot handle TypedStream version %d", stream->version);
+  return 1;
+}
+
+static int
+__objc_write_typed_stream_signature (TypedStream *stream)
+{
+  char buffer[80];
+  sprintf(buffer, "GNU TypedStream %d", OBJC_TYPED_STREAM_VERSION);
+  stream->version = OBJC_TYPED_STREAM_VERSION;
+  (*stream->write) (stream->physical, buffer, strlen (buffer) + 1);
+  return 1;
+}
+
+static void __objc_finish_write_root_object(struct objc_typed_stream *stream)
+{
+  objc_hash_delete (stream->object_table);
+  stream->object_table = objc_hash_new (64,
+					(hash_func_type) objc_hash_ptr,
+					(compare_func_type) objc_compare_ptrs);
+}
+
+static void __objc_finish_read_root_object(struct objc_typed_stream *stream)
+{
+  node_ptr node;
+  SEL awake_sel = sel_get_any_uid ("awake");
+  cache_ptr free_list = objc_hash_new (64,
+				       (hash_func_type) objc_hash_ptr,
+				       (compare_func_type) objc_compare_ptrs);
+
+  /* resolve object forward references */
+  for (node = objc_hash_next (stream->object_refs, NULL); node;
+       node = objc_hash_next (stream->object_refs, node))
+    {
+      struct objc_list *reflist = node->value;
+      const void *key = node->key;
+      id object = objc_hash_value_for_key (stream->object_table, key);
+      while (reflist)
+	{
+	  *((id*) reflist->head) = object;
+	  if (objc_hash_value_for_key (free_list,reflist) == NULL)
+	    objc_hash_add (&free_list,reflist,reflist);
+
+	  reflist = reflist->tail;
+	}
+    }
+    
+  /* apply __objc_free to all objects stored in free_list */
+  for (node = objc_hash_next (free_list, NULL); node;
+       node = objc_hash_next (free_list, node))
+    objc_free ((void *) node->key);
+
+  objc_hash_delete (free_list);
+
+  /* empty object reference table */
+  objc_hash_delete (stream->object_refs);
+  stream->object_refs = objc_hash_new (8, (hash_func_type) objc_hash_ptr,
+				       (compare_func_type) objc_compare_ptrs);
+  
+  /* call -awake for all objects read  */
+  if (awake_sel)
+    {
+      for (node = objc_hash_next (stream->object_table, NULL); node;
+	   node = objc_hash_next (stream->object_table, node))
+	{
+	  id object = node->value;
+	  if (__objc_responds_to (object, awake_sel))
+	    (*objc_msg_lookup (object, awake_sel)) (object, awake_sel);
+	}
+    }
+
+  /* empty object table */
+  objc_hash_delete (stream->object_table);
+  stream->object_table = objc_hash_new(64,
+				       (hash_func_type)objc_hash_ptr,
+				       (compare_func_type)objc_compare_ptrs);
+}
+
+/*
+** Open the stream PHYSICAL in MODE
+*/
+
+TypedStream *
+objc_open_typed_stream (FILE *physical, int mode)
+{
+  TypedStream *s = (TypedStream *) objc_malloc (sizeof (TypedStream));
+
+  s->mode = mode;
+  s->physical = physical;
+  s->stream_table = objc_hash_new (64,
+				   (hash_func_type) objc_hash_ptr,
+				   (compare_func_type) objc_compare_ptrs);
+  s->object_table = objc_hash_new (64,
+				   (hash_func_type) objc_hash_ptr,
+				   (compare_func_type) objc_compare_ptrs);
+  s->eof = (objc_typed_eof_func) __objc_feof;
+  s->flush = (objc_typed_flush_func) fflush;
+  s->writing_root_p = 0;
+  if (mode == OBJC_READONLY)
+    {
+      s->class_table 
+	= objc_hash_new (8, (hash_func_type) objc_hash_string,
+			 (compare_func_type) objc_compare_strings);
+      s->object_refs = objc_hash_new (8, (hash_func_type) objc_hash_ptr,
+				      (compare_func_type) objc_compare_ptrs);
+      s->read = (objc_typed_read_func) __objc_fread;
+      s->write = (objc_typed_write_func) __objc_no_write;
+      __objc_read_typed_stream_signature (s);
+    }
+  else if (mode == OBJC_WRITEONLY)
+    {
+      s->class_table = 0;
+      s->object_refs = 0;
+      s->read = (objc_typed_read_func) __objc_no_read;
+      s->write = (objc_typed_write_func) __objc_fwrite;
+      __objc_write_typed_stream_signature (s);
+    }      
+  else
+    {
+      objc_close_typed_stream (s);
+      return NULL;
+    }
+  s->type = OBJC_FILE_STREAM;
+  return s;
+}
+
+/*
+** Open the file named by FILE_NAME in MODE
+*/
+
+TypedStream*
+objc_open_typed_stream_for_file (const char *file_name, int mode)
+{
+  FILE *file = NULL;
+  TypedStream *s;
+
+  if (mode == OBJC_READONLY)
+    file = fopen (file_name, "r");
+  else
+    file = fopen (file_name, "w");
+
+  if (file)
+    {
+      s = objc_open_typed_stream (file, mode);
+      if (s)
+	s->type |= OBJC_MANAGED_STREAM;
+      return s;
+    }
+  else
+    return NULL;
+}
+
+/*
+** Close STREAM freeing the structure it self.  If it was opened with 
+** objc_open_typed_stream_for_file, the file will also be closed.
+*/
+
+void
+objc_close_typed_stream (TypedStream *stream)
+{
+  if (stream->mode == OBJC_READONLY)
+    {
+      __objc_finish_read_root_object (stream); /* Just in case... */
+      objc_hash_delete (stream->class_table);
+      objc_hash_delete (stream->object_refs);
+    }
+
+  objc_hash_delete (stream->stream_table);
+  objc_hash_delete (stream->object_table);
+
+  if (stream->type == (OBJC_MANAGED_STREAM | OBJC_FILE_STREAM))
+    fclose ((FILE *)stream->physical);
+
+  objc_free(stream);
+}
+
+BOOL
+objc_end_of_typed_stream (TypedStream *stream)
+{
+  return (*stream->eof) (stream->physical);
+}
+
+void
+objc_flush_typed_stream (TypedStream *stream)
+{
+  (*stream->flush) (stream->physical);
+}
+
+long
+objc_get_stream_class_version (TypedStream *stream, Class class)
+{
+  if (stream->class_table)
+    return PTR2LONG(objc_hash_value_for_key (stream->class_table,
+					     class->name));
+  else
+    return class_get_version (class);
+}
+
diff --git a/libobjc/class.c b/libobjc/class.c
new file mode 100644
index 000000000..fb57293a1
--- /dev/null
+++ b/libobjc/class.c
@@ -0,0 +1,1138 @@
+/* GNU Objective C Runtime class related functions
+   Copyright (C) 1993, 1995, 1996, 1997, 2001, 2002, 2009, 2010
+     Free Software Foundation, Inc.
+   Contributed by Kresten Krab Thorup and Dennis Glatting.
+
+   Lock-free class table code designed and written from scratch by
+   Nicola Pero, 2001.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+/* The code in this file critically affects class method invocation
+  speed.  This long preamble comment explains why, and the issues
+  involved.
+
+  One of the traditional weaknesses of the GNU Objective-C runtime is
+  that class method invocations are slow.  The reason is that when you
+  write
+  
+  array = [NSArray new];
+  
+  this gets basically compiled into the equivalent of 
+  
+  array = [(objc_get_class ("NSArray")) new];
+  
+  objc_get_class returns the class pointer corresponding to the string
+  `NSArray'; and because of the lookup, the operation is more
+  complicated and slow than a simple instance method invocation.
+  
+  Most high performance Objective-C code (using the GNU Objc runtime)
+  I had the opportunity to read (or write) work around this problem by
+  caching the class pointer:
+  
+  Class arrayClass = [NSArray class];
+  
+  ... later on ...
+  
+  array = [arrayClass new];
+  array = [arrayClass new];
+  array = [arrayClass new];
+  
+  In this case, you always perform a class lookup (the first one), but
+  then all the [arrayClass new] methods run exactly as fast as an
+  instance method invocation.  It helps if you have many class method
+  invocations to the same class.
+  
+  The long-term solution to this problem would be to modify the
+  compiler to output tables of class pointers corresponding to all the
+  class method invocations, and to add code to the runtime to update
+  these tables - that should in the end allow class method invocations
+  to perform precisely as fast as instance method invocations, because
+  no class lookup would be involved.  I think the Apple Objective-C
+  runtime uses this technique.  Doing this involves synchronized
+  modifications in the runtime and in the compiler.
+  
+  As a first medicine to the problem, I [NP] have redesigned and
+  rewritten the way the runtime is performing class lookup.  This
+  doesn't give as much speed as the other (definitive) approach, but
+  at least a class method invocation now takes approximately 4.5 times
+  an instance method invocation on my machine (it would take approx 12
+  times before the rewriting), which is a lot better.
+
+  One of the main reason the new class lookup is so faster is because
+  I implemented it in a way that can safely run multithreaded without
+  using locks - a so-called `lock-free' data structure.  The atomic
+  operation is pointer assignment.  The reason why in this problem
+  lock-free data structures work so well is that you never remove
+  classes from the table - and the difficult thing with lock-free data
+  structures is freeing data when is removed from the structures.  */
+
+#include "objc-private/common.h"
+#include "objc-private/error.h"
+#include "objc/runtime.h"
+#include "objc/thr.h"
+#include "objc-private/module-abi-8.h"  /* For CLS_ISCLASS and similar.  */
+#include "objc-private/runtime.h"       /* the kitchen sink */
+#include "objc-private/sarray.h"        /* For sarray_put_at_safe.  */
+#include <string.h>                     /* For memset */
+
+/* We use a table which maps a class name to the corresponding class
+   pointer.  The first part of this file defines this table, and
+   functions to do basic operations on the table.  The second part of
+   the file implements some higher level Objective-C functionality for
+   classes by using the functions provided in the first part to manage
+   the table. */
+
+/**
+ ** Class Table Internals
+ **/
+
+/* A node holding a class */
+typedef struct class_node
+{
+  struct class_node *next;      /* Pointer to next entry on the list.
+                                   NULL indicates end of list. */
+  
+  const char *name;             /* The class name string */
+  int length;                   /* The class name string length */
+  Class pointer;                /* The Class pointer */
+  
+} *class_node_ptr;
+
+/* A table containing classes is a class_node_ptr (pointing to the
+   first entry in the table - if it is NULL, then the table is
+   empty). */
+
+/* We have 1024 tables.  Each table contains all class names which
+   have the same hash (which is a number between 0 and 1023).  To look
+   up a class_name, we compute its hash, and get the corresponding
+   table.  Once we have the table, we simply compare strings directly
+   till we find the one which we want (using the length first).  The
+   number of tables is quite big on purpose (a normal big application
+   has less than 1000 classes), so that you shouldn't normally get any
+   collisions, and get away with a single comparison (which we can't
+   avoid since we need to know that you have got the right thing).  */
+#define CLASS_TABLE_SIZE 1024
+#define CLASS_TABLE_MASK 1023
+
+static class_node_ptr class_table_array[CLASS_TABLE_SIZE];
+
+/* The table writing mutex - we lock on writing to avoid conflicts
+   between different writers, but we read without locks.  That is
+   possible because we assume pointer assignment to be an atomic
+   operation.  TODO: This is only true under certain circumstances,
+   which should be clarified.  */
+static objc_mutex_t __class_table_lock = NULL;
+
+/* CLASS_TABLE_HASH is how we compute the hash of a class name.  It is
+   a macro - *not* a function - arguments *are* modified directly.
+
+   INDEX should be a variable holding an int;
+   HASH should be a variable holding an int;
+   CLASS_NAME should be a variable holding a (char *) to the class_name.  
+
+   After the macro is executed, INDEX contains the length of the
+   string, and HASH the computed hash of the string; CLASS_NAME is
+   untouched.  */
+
+#define CLASS_TABLE_HASH(INDEX, HASH, CLASS_NAME)          \
+  HASH = 0;                                                  \
+  for (INDEX = 0; CLASS_NAME[INDEX] != '\0'; INDEX++)        \
+    {                                                        \
+      HASH = (HASH << 4) ^ (HASH >> 28) ^ CLASS_NAME[INDEX]; \
+    }                                                        \
+                                                             \
+  HASH = (HASH ^ (HASH >> 10) ^ (HASH >> 20)) & CLASS_TABLE_MASK;
+
+/* Setup the table.  */
+static void
+class_table_setup (void)
+{
+  /* Start - nothing in the table.  */
+  memset (class_table_array, 0, sizeof (class_node_ptr) * CLASS_TABLE_SIZE);
+
+  /* The table writing mutex.  */
+  __class_table_lock = objc_mutex_allocate ();
+}
+
+
+/* Insert a class in the table (used when a new class is
+   registered).  */
+static void 
+class_table_insert (const char *class_name, Class class_pointer)
+{
+  int hash, length;
+  class_node_ptr new_node;
+
+  /* Find out the class name's hash and length.  */
+  CLASS_TABLE_HASH (length, hash, class_name);
+  
+  /* Prepare the new node holding the class.  */
+  new_node = objc_malloc (sizeof (struct class_node));
+  new_node->name = class_name;
+  new_node->length = length;
+  new_node->pointer = class_pointer;
+
+  /* Lock the table for modifications.  */
+  objc_mutex_lock (__class_table_lock);
+  
+  /* Insert the new node in the table at the beginning of the table at
+     class_table_array[hash].  */
+  new_node->next = class_table_array[hash];
+  class_table_array[hash] = new_node;
+  
+  objc_mutex_unlock (__class_table_lock);
+}
+
+/* Replace a class in the table (used only by poseAs:).  */
+static void 
+class_table_replace (Class old_class_pointer, Class new_class_pointer)
+{
+  int hash;
+  class_node_ptr node;
+
+  objc_mutex_lock (__class_table_lock);
+  
+  hash = 0;
+  node = class_table_array[hash];
+  
+  while (hash < CLASS_TABLE_SIZE)
+    {
+      if (node == NULL)
+        {
+          hash++;
+          if (hash < CLASS_TABLE_SIZE)
+	    node = class_table_array[hash];
+        }
+      else
+        {
+          Class class1 = node->pointer;
+
+          if (class1 == old_class_pointer)
+	    node->pointer = new_class_pointer;
+
+          node = node->next;
+        }
+    }
+
+  objc_mutex_unlock (__class_table_lock);
+}
+
+
+/* Get a class from the table.  This does not need mutex protection.
+   Currently, this function is called each time you call a static
+   method, this is why it must be very fast.  */
+static inline Class 
+class_table_get_safe (const char *class_name)
+{
+  class_node_ptr node;  
+  int length, hash;
+
+  /* Compute length and hash.  */
+  CLASS_TABLE_HASH (length, hash, class_name);
+  
+  node = class_table_array[hash];
+  
+  if (node != NULL)
+    {
+      do
+        {
+          if (node->length == length)
+            {
+              /* Compare the class names.  */
+              int i;
+
+              for (i = 0; i < length; i++)
+                {
+                  if ((node->name)[i] != class_name[i]) 
+		    break;
+                }
+              
+              if (i == length)
+                {
+                  /* They are equal!  */
+                  return node->pointer;
+                }
+            }
+        }
+      while ((node = node->next) != NULL);
+    }
+
+  return Nil;
+}
+
+/* Enumerate over the class table.  */
+struct class_table_enumerator
+{
+  int hash;
+  class_node_ptr node;
+};
+
+
+static Class
+class_table_next (struct class_table_enumerator **e)
+{
+  struct class_table_enumerator *enumerator = *e;
+  class_node_ptr next;
+  
+  if (enumerator == NULL)
+    {
+       *e = objc_malloc (sizeof (struct class_table_enumerator));
+      enumerator = *e;
+      enumerator->hash = 0;
+      enumerator->node = NULL;
+
+      next = class_table_array[enumerator->hash];
+    }
+  else
+    next = enumerator->node->next;
+  
+  if (next != NULL)
+    {
+      enumerator->node = next;
+      return enumerator->node->pointer;
+    }
+  else 
+    {
+      enumerator->hash++;
+     
+      while (enumerator->hash < CLASS_TABLE_SIZE)
+        {
+          next = class_table_array[enumerator->hash];
+          if (next != NULL)
+            {
+              enumerator->node = next;
+              return enumerator->node->pointer;
+            }
+          enumerator->hash++;
+        }
+      
+      /* Ok - table finished - done.  */
+      objc_free (enumerator);
+      return Nil;
+    }
+}
+
+#if 0 /* DEBUGGING FUNCTIONS */
+/* Debugging function - print the class table.  */
+void
+class_table_print (void)
+{
+  int i;
+  
+  for (i = 0; i < CLASS_TABLE_SIZE; i++)
+    {
+      class_node_ptr node;
+      
+      printf ("%d:\n", i);
+      node = class_table_array[i];
+      
+      while (node != NULL)
+        {
+          printf ("\t%s\n", node->name);
+          node = node->next;
+        }
+    }
+}
+
+/* Debugging function - print an histogram of number of classes in
+   function of hash key values.  Useful to evaluate the hash function
+   in real cases.  */
+void
+class_table_print_histogram (void)
+{
+  int i, j;
+  int counter = 0;
+  
+  for (i = 0; i < CLASS_TABLE_SIZE; i++)
+    {
+      class_node_ptr node;
+      
+      node = class_table_array[i];
+      
+      while (node != NULL)
+        {
+          counter++;
+          node = node->next;
+        }
+      if (((i + 1) % 50) == 0)
+        {
+          printf ("%4d:", i + 1);
+          for (j = 0; j < counter; j++)
+	    printf ("X");
+
+          printf ("\n");
+          counter = 0;
+        }
+    }
+  printf ("%4d:", i + 1);
+  for (j = 0; j < counter; j++)
+    printf ("X");
+
+  printf ("\n");
+}
+#endif /* DEBUGGING FUNCTIONS */
+
+/**
+ ** Objective-C runtime functions
+ **/
+
+/* From now on, the only access to the class table data structure
+   should be via the class_table_* functions.  */
+
+/* This is a hook which is called by objc_get_class and
+   objc_lookup_class if the runtime is not able to find the class.
+   This may e.g. try to load in the class using dynamic loading.
+
+   This hook was a public, global variable in the Traditional GNU
+   Objective-C Runtime API (objc/objc-api.h).  The modern GNU
+   Objective-C Runtime API (objc/runtime.h) provides the
+   objc_setGetUnknownClassHandler() function instead.
+*/
+Class (*_objc_lookup_class) (const char *name) = 0;      /* !T:SAFE */
+
+/* The handler currently in use.  PS: if both
+   __obj_get_unknown_class_handler and _objc_lookup_class are defined,
+   __objc_get_unknown_class_handler is called first.  */
+static objc_get_unknown_class_handler
+__objc_get_unknown_class_handler = NULL;
+
+objc_get_unknown_class_handler
+objc_setGetUnknownClassHandler (objc_get_unknown_class_handler 
+				new_handler)
+{
+  objc_get_unknown_class_handler old_handler 
+    = __objc_get_unknown_class_handler;
+  __objc_get_unknown_class_handler = new_handler;
+  return old_handler;
+}
+
+
+/* True when class links has been resolved.  */     
+BOOL __objc_class_links_resolved = NO;                  /* !T:UNUSED */
+
+
+void
+__objc_init_class_tables (void)
+{
+  /* Allocate the class hash table.  */
+  
+  if (__class_table_lock)
+    return;
+  
+  objc_mutex_lock (__objc_runtime_mutex);
+  
+  class_table_setup ();
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+}  
+
+/* This function adds a class to the class hash table, and assigns the
+   class a number, unless it's already known.  Return 'YES' if the
+   class was added.  Return 'NO' if the class was already known.  */
+BOOL
+__objc_add_class_to_hash (Class class)
+{
+  Class existing_class;
+
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  /* Make sure the table is there.  */
+  assert (__class_table_lock);
+
+  /* Make sure it's not a meta class.  */
+  assert (CLS_ISCLASS (class));
+
+  /* Check to see if the class is already in the hash table.  */
+  existing_class = class_table_get_safe (class->name);
+
+  if (existing_class)
+    {
+      objc_mutex_unlock (__objc_runtime_mutex);
+      return NO;      
+    }
+  else
+    {
+      /* The class isn't in the hash table.  Add the class and assign
+         a class number.  */
+      static unsigned int class_number = 1;
+      
+      CLS_SETNUMBER (class, class_number);
+      CLS_SETNUMBER (class->class_pointer, class_number);
+
+      ++class_number;
+      class_table_insert (class->name, class);
+
+      objc_mutex_unlock (__objc_runtime_mutex);
+      return YES;
+    }
+}
+
+Class
+objc_getClass (const char *name)
+{
+  Class class;
+
+  if (name == NULL)
+    return Nil;
+
+  class = class_table_get_safe (name);
+  
+  if (class)
+    return class;
+
+  if (__objc_get_unknown_class_handler)
+    return (*__objc_get_unknown_class_handler) (name);
+
+  if (_objc_lookup_class)
+    return (*_objc_lookup_class) (name);
+
+  return Nil;
+}
+
+Class
+objc_lookUpClass (const char *name)
+{
+  if (name == NULL)
+    return Nil;
+  else
+    return class_table_get_safe (name);
+}
+
+Class
+objc_getMetaClass (const char *name)
+{
+  Class class = objc_getClass (name);
+
+  if (class)
+    return class->class_pointer;
+  else
+    return Nil;
+}
+
+Class
+objc_getRequiredClass (const char *name)
+{
+  Class class = objc_getClass (name);
+
+  if (class)
+    return class;
+  else
+    _objc_abort ("objc_getRequiredClass ('%s') failed: class not found\n", name);
+}
+
+int
+objc_getClassList (Class *returnValue, int maxNumberOfClassesToReturn)
+{
+  /* Iterate over all entries in the table.  */
+  int hash, count = 0;
+
+  for (hash = 0; hash < CLASS_TABLE_SIZE; hash++)
+    {
+      class_node_ptr node = class_table_array[hash];
+      
+      while (node != NULL)
+	{
+	  if (returnValue)
+	    {
+	      if (count < maxNumberOfClassesToReturn)
+		returnValue[count] = node->pointer;
+	      else
+		return count;
+	    }
+	  count++;
+	  node = node->next;
+	}
+    }
+  
+  return count;
+}
+
+Class
+objc_allocateClassPair (Class super_class, const char *class_name, size_t extraBytes)
+{
+  Class new_class;
+  Class new_meta_class;
+
+  if (class_name == NULL)
+    return Nil;
+
+  if (objc_getClass (class_name))
+    return Nil;
+
+  if (super_class)
+    {
+      /* If you want to build a hierarchy of classes, you need to
+	 build and register them one at a time.  The risk is that you
+	 are able to cause confusion by registering a subclass before
+	 the superclass or similar.  */
+      if (CLS_IS_IN_CONSTRUCTION (super_class))
+	return Nil;
+    }
+
+  /* Technically, we should create the metaclass first, then use
+     class_createInstance() to create the class.  That complication
+     would be relevant if we had class variables, but we don't, so we
+     just ignore it and create everything directly and assume all
+     classes have the same size.  */
+  new_class = objc_calloc (1, sizeof (struct objc_class) + extraBytes);
+  new_meta_class = objc_calloc (1, sizeof (struct objc_class) + extraBytes);
+
+  /* We create an unresolved class, similar to one generated by the
+     compiler.  It will be resolved later when we register it.
+
+     Note how the metaclass details are not that important; when the
+     class is resolved, the ones that matter will be fixed up.  */
+  new_class->class_pointer = new_meta_class;
+  new_meta_class->class_pointer = 0;
+
+  if (super_class)
+    {
+      /* Force the name of the superclass in place of the link to the
+	 actual superclass, which will be put there when the class is
+	 resolved.  */
+      const char *super_class_name = class_getName (super_class);
+      new_class->super_class = (void *)super_class_name;
+      new_meta_class->super_class = (void *)super_class_name;
+    }
+  else
+    {
+      new_class->super_class = (void *)0;
+      new_meta_class->super_class = (void *)0;
+    }
+
+  new_class->name = objc_malloc (strlen (class_name) + 1);
+  strcpy ((char*)new_class->name, class_name);
+  new_meta_class->name = new_class->name;
+
+  new_class->version = 0;
+  new_meta_class->version = 0;
+
+  new_class->info = _CLS_CLASS | _CLS_IN_CONSTRUCTION;
+  new_meta_class->info = _CLS_META | _CLS_IN_CONSTRUCTION;
+
+  if (super_class)
+    new_class->instance_size = super_class->instance_size;
+  else
+    new_class->instance_size = 0;
+  new_meta_class->instance_size = sizeof (struct objc_class);
+
+  return new_class;
+}
+
+void
+objc_registerClassPair (Class class_)
+{
+  if (class_ == Nil)
+    return;
+
+  if ((! CLS_ISCLASS (class_)) || (! CLS_IS_IN_CONSTRUCTION (class_)))
+    return;
+
+  if ((! CLS_ISMETA (class_->class_pointer)) || (! CLS_IS_IN_CONSTRUCTION (class_->class_pointer)))
+    return;
+
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  if (objc_getClass (class_->name))
+    {
+      objc_mutex_unlock (__objc_runtime_mutex);
+      return;
+    }
+
+  CLS_SET_NOT_IN_CONSTRUCTION (class_);
+  CLS_SET_NOT_IN_CONSTRUCTION (class_->class_pointer);
+
+  __objc_init_class (class_);
+
+  /* Resolve class links immediately.  No point in waiting.  */
+  __objc_resolve_class_links ();
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+}
+
+void
+objc_disposeClassPair (Class class_)
+{
+  if (class_ == Nil)
+    return;
+
+  if ((! CLS_ISCLASS (class_)) || (! CLS_IS_IN_CONSTRUCTION (class_)))
+    return;
+
+  if ((! CLS_ISMETA (class_->class_pointer)) || (! CLS_IS_IN_CONSTRUCTION (class_->class_pointer)))
+    return;
+
+  /* Undo any class_addIvar().  */
+  if (class_->ivars)
+    {
+      int i;
+      for (i = 0; i < class_->ivars->ivar_count; i++)
+	{
+	  struct objc_ivar *ivar = &(class_->ivars->ivar_list[i]);
+
+	  objc_free ((char *)ivar->ivar_name);
+	  objc_free ((char *)ivar->ivar_type);
+	}
+      
+      objc_free (class_->ivars);
+    }
+
+  /* Undo any class_addMethod().  */
+  if (class_->methods)
+    {
+      struct objc_method_list *list = class_->methods;
+      while (list)
+	{
+	  int i;
+	  struct objc_method_list *next = list->method_next;
+
+	  for (i = 0; i < list->method_count; i++)
+	    {
+	      struct objc_method *method = &(list->method_list[i]);
+
+	      objc_free ((char *)method->method_name);
+	      objc_free ((char *)method->method_types);
+	    }
+
+	  objc_free (list);
+	  list = next;
+	}
+    }
+
+  /* Undo any class_addProtocol().  */
+  if (class_->protocols)
+    {
+      struct objc_protocol_list *list = class_->protocols;
+      while (list)
+	{
+	  struct objc_protocol_list *next = list->next;
+
+	  objc_free (list);
+	  list = next;
+	}
+    }
+  
+  /* Undo any class_addMethod() on the meta-class.  */
+  if (class_->class_pointer->methods)
+    {
+      struct objc_method_list *list = class_->class_pointer->methods;
+      while (list)
+	{
+	  int i;
+	  struct objc_method_list *next = list->method_next;
+
+	  for (i = 0; i < list->method_count; i++)
+	    {
+	      struct objc_method *method = &(list->method_list[i]);
+
+	      objc_free ((char *)method->method_name);
+	      objc_free ((char *)method->method_types);
+	    }
+
+	  objc_free (list);
+	  list = next;
+	}
+    }
+
+  /* Undo objc_allocateClassPair().  */
+  objc_free ((char *)(class_->name));
+  objc_free (class_->class_pointer);
+  objc_free (class_);
+}
+
+/* Traditional GNU Objective-C Runtime API.  */
+/* Get the class object for the class named NAME.  If NAME does not
+   identify a known class, the hook _objc_lookup_class is called.  If
+   this fails, nil is returned.  */
+Class
+objc_lookup_class (const char *name)
+{
+  return objc_getClass (name);
+}
+
+/* Traditional GNU Objective-C Runtime API.  Important: this method is
+   called automatically by the compiler while messaging (if using the
+   traditional ABI), so it is worth keeping it fast; don't make it
+   just a wrapper around objc_getClass().  */
+/* Note that this is roughly equivalent to objc_getRequiredClass().  */
+/* Get the class object for the class named NAME.  If NAME does not
+   identify a known class, the hook _objc_lookup_class is called.  If
+   this fails, an error message is issued and the system aborts.  */
+Class
+objc_get_class (const char *name)
+{
+  Class class;
+
+  class = class_table_get_safe (name);
+
+  if (class)
+    return class;
+
+  if (__objc_get_unknown_class_handler)
+    class = (*__objc_get_unknown_class_handler) (name);
+
+  if ((!class)  &&  _objc_lookup_class)
+    class = (*_objc_lookup_class) (name);
+
+  if (class)
+    return class;
+  
+  _objc_abort ("objc runtime: cannot find class %s\n", name);
+
+  return 0;
+}
+
+MetaClass
+objc_get_meta_class (const char *name)
+{
+  return objc_get_class (name)->class_pointer;
+}
+
+/* This function provides a way to enumerate all the classes in the
+   executable.  Pass *ENUM_STATE == NULL to start the enumeration.  The
+   function will return 0 when there are no more classes.  
+   For example: 
+       id class; 
+       void *es = NULL;
+       while ((class = objc_next_class (&es)))
+         ... do something with class; 
+*/
+Class
+objc_next_class (void **enum_state)
+{
+  Class class;
+
+  objc_mutex_lock (__objc_runtime_mutex);
+  
+  /* Make sure the table is there.  */
+  assert (__class_table_lock);
+
+  class = class_table_next ((struct class_table_enumerator **) enum_state);
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+  
+  return class;
+}
+
+/* This is used when the implementation of a method changes.  It goes
+   through all classes, looking for the ones that have these methods
+   (either method_a or method_b; method_b can be NULL), and reloads
+   the implementation for these.  You should call this with the
+   runtime mutex already locked.  */
+void
+__objc_update_classes_with_methods (struct objc_method *method_a, struct objc_method *method_b)
+{
+  int hash;
+
+  /* Iterate over all classes.  */
+  for (hash = 0; hash < CLASS_TABLE_SIZE; hash++)
+    {
+      class_node_ptr node = class_table_array[hash];
+      
+      while (node != NULL)
+	{
+	  /* We execute this loop twice: the first time, we iterate
+	     over all methods in the class (instance methods), while
+	     the second time we iterate over all methods in the meta
+	     class (class methods).  */
+	  Class class = Nil;
+	  BOOL done = NO;
+
+	  while (done == NO)
+	    {
+	      struct objc_method_list * method_list;
+
+	      if (class == Nil)
+		{
+		  /* The first time, we work on the class.  */
+		  class = node->pointer;
+		}
+	      else
+		{
+		  /* The second time, we work on the meta class.  */
+		  class = class->class_pointer;
+		  done = YES;
+		}
+
+	      method_list = class->methods;
+
+	      while (method_list)
+		{
+		  int i;
+		  
+		  for (i = 0; i < method_list->method_count; ++i)
+		    {
+		      struct objc_method *method = &method_list->method_list[i];
+		      
+		      /* If the method is one of the ones we are
+			 looking for, update the implementation.  */
+		      if (method == method_a)
+			sarray_at_put_safe (class->dtable,
+					    (sidx) method_a->method_name->sel_id,
+					    method_a->method_imp);
+		      
+		      if (method == method_b)
+			{
+			  if (method_b != NULL)
+			    sarray_at_put_safe (class->dtable,
+						(sidx) method_b->method_name->sel_id,
+						method_b->method_imp);
+			}
+		    }
+		  
+		  method_list = method_list->method_next;
+		}
+	    }
+	  node = node->next;
+	}
+    }
+}
+
+/* Resolve super/subclass links for all classes.  The only thing we
+   can be sure of is that the class_pointer for class objects point to
+   the right meta class objects.  */
+void
+__objc_resolve_class_links (void)
+{
+  struct class_table_enumerator *es = NULL;
+  Class object_class = objc_get_class ("Object");
+  Class class1;
+
+  assert (object_class);
+
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  /* Assign subclass links.  */
+  while ((class1 = class_table_next (&es)))
+    {
+      /* Make sure we have what we think we have.  */
+      assert (CLS_ISCLASS (class1));
+      assert (CLS_ISMETA (class1->class_pointer));
+
+      /* The class_pointer of all meta classes point to Object's meta
+         class.  */
+      class1->class_pointer->class_pointer = object_class->class_pointer;
+
+      if (! CLS_ISRESOLV (class1))
+        {
+          CLS_SETRESOLV (class1);
+          CLS_SETRESOLV (class1->class_pointer);
+              
+          if (class1->super_class)
+            {   
+              Class a_super_class 
+                = objc_get_class ((char *) class1->super_class);
+              
+              assert (a_super_class);
+              
+              DEBUG_PRINTF ("making class connections for: %s\n",
+                            class1->name);
+              
+              /* Assign subclass links for superclass.  */
+              class1->sibling_class = a_super_class->subclass_list;
+              a_super_class->subclass_list = class1;
+              
+              /* Assign subclass links for meta class of superclass.  */
+              if (a_super_class->class_pointer)
+                {
+                  class1->class_pointer->sibling_class
+                    = a_super_class->class_pointer->subclass_list;
+                  a_super_class->class_pointer->subclass_list 
+                    = class1->class_pointer;
+                }
+            }
+          else /* A root class, make its meta object be a subclass of
+                  Object.  */
+            {
+              class1->class_pointer->sibling_class 
+                = object_class->subclass_list;
+              object_class->subclass_list = class1->class_pointer;
+            }
+        }
+    }
+
+  /* Assign superclass links.  */
+   es = NULL;
+   while ((class1 = class_table_next (&es)))
+    {
+      Class sub_class;
+      for (sub_class = class1->subclass_list; sub_class;
+           sub_class = sub_class->sibling_class)
+        {
+          sub_class->super_class = class1;
+          if (CLS_ISCLASS (sub_class))
+            sub_class->class_pointer->super_class = class1->class_pointer;
+        }
+    }
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+}
+
+const char *
+class_getName (Class class_)
+{
+  if (class_ == Nil)
+    return "nil";
+
+  return class_->name;
+}
+
+BOOL
+class_isMetaClass (Class class_)
+{
+  /* CLS_ISMETA includes the check for Nil class_.  */
+  return CLS_ISMETA (class_);
+}
+
+/* Even inside libobjc it may be worth using class_getSuperclass
+   instead of accessing class_->super_class directly because it
+   resolves the class links if needed.  If you access
+   class_->super_class directly, make sure to deal with the situation
+   where the class is not resolved yet!  */
+Class
+class_getSuperclass (Class class_)
+{
+  if (class_ == Nil)
+    return Nil;
+
+  /* Classes that are in construction are not resolved and can not be
+     resolved!  */
+  if (CLS_IS_IN_CONSTRUCTION (class_))
+    return Nil;
+
+  /* If the class is not resolved yet, super_class would point to a
+     string (the name of the super class) as opposed to the actual
+     super class.  In that case, we need to resolve the class links
+     before we can return super_class.  */
+  if (! CLS_ISRESOLV (class_))
+    __objc_resolve_class_links ();
+  
+  return class_->super_class;
+}
+
+int
+class_getVersion (Class class_)
+{
+  if (class_ == Nil)
+    return 0;
+
+  return (int)(class_->version);
+}
+
+void
+class_setVersion (Class class_, int version)
+{
+  if (class_ == Nil)
+    return;
+
+  class_->version = version;
+}
+
+size_t
+class_getInstanceSize (Class class_)
+{
+  if (class_ == Nil)
+    return 0;
+
+  return class_->instance_size;
+}
+
+#define CLASSOF(c) ((c)->class_pointer)
+
+Class
+class_pose_as (Class impostor, Class super_class)
+{
+  if (! CLS_ISRESOLV (impostor))
+    __objc_resolve_class_links ();
+
+  /* Preconditions */
+  assert (impostor);
+  assert (super_class);
+  assert (impostor->super_class == super_class);
+  assert (CLS_ISCLASS (impostor));
+  assert (CLS_ISCLASS (super_class));
+  assert (impostor->instance_size == super_class->instance_size);
+
+  {
+    Class *subclass = &(super_class->subclass_list);
+
+    /* Move subclasses of super_class to impostor.  */
+    while (*subclass)
+      {
+        Class nextSub = (*subclass)->sibling_class;
+
+        if (*subclass != impostor)
+          {
+            Class sub = *subclass;
+
+            /* Classes */
+            sub->sibling_class = impostor->subclass_list;
+            sub->super_class = impostor;
+            impostor->subclass_list = sub;
+
+            /* It will happen that SUB is not a class object if it is
+               the top of the meta class hierarchy chain (root
+               meta-class objects inherit their class object).  If
+               that is the case... don't mess with the meta-meta
+               class.  */
+            if (CLS_ISCLASS (sub))
+              {
+                /* Meta classes */
+                CLASSOF (sub)->sibling_class = 
+                  CLASSOF (impostor)->subclass_list;
+                CLASSOF (sub)->super_class = CLASSOF (impostor);
+                CLASSOF (impostor)->subclass_list = CLASSOF (sub);
+              }
+          }
+
+        *subclass = nextSub;
+      }
+
+    /* Set subclasses of superclass to be impostor only.  */
+    super_class->subclass_list = impostor;
+    CLASSOF (super_class)->subclass_list = CLASSOF (impostor);
+    
+    /* Set impostor to have no sibling classes.  */
+    impostor->sibling_class = 0;
+    CLASSOF (impostor)->sibling_class = 0;
+  }
+  
+  /* Check relationship of impostor and super_class is kept.  */
+  assert (impostor->super_class == super_class);
+  assert (CLASSOF (impostor)->super_class == CLASSOF (super_class));
+
+  /* This is how to update the lookup table.  Regardless of what the
+     keys of the hashtable is, change all values that are superclass
+     into impostor.  */
+
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  class_table_replace (super_class, impostor);
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+
+  /* Next, we update the dispatch tables...  */
+  __objc_update_dispatch_table_for_class (CLASSOF (impostor));
+  __objc_update_dispatch_table_for_class (impostor);
+
+  return impostor;
+}
diff --git a/libobjc/config.h.in b/libobjc/config.h.in
new file mode 100644
index 000000000..d9c8172d2
--- /dev/null
+++ b/libobjc/config.h.in
@@ -0,0 +1,74 @@
+/* config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define to 1 if the target assembler supports thread-local storage. */
+#undef HAVE_CC_TLS
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#undef HAVE_DLFCN_H
+
+/* Define if the compiler has a thread header that is non single. */
+#undef HAVE_GTHR_DEFAULT
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the <memory.h> header file. */
+#undef HAVE_MEMORY_H
+
+/* Define to 1 if you have the <sched.h> header file. */
+#undef HAVE_SCHED_H
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if the target supports thread-local storage. */
+#undef HAVE_TLS
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+   */
+#undef LT_OBJDIR
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+#undef NO_MINUS_C_MINUS_O
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Define if the compiler is configured for setjmp/longjmp exceptions. */
+#undef SJLJ_EXCEPTIONS
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
diff --git a/libobjc/configure b/libobjc/configure
new file mode 100755
index 000000000..e6f0afdfa
--- /dev/null
+++ b/libobjc/configure
@@ -0,0 +1,13747 @@
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.64 for package-unused version-unused.
+#
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
+# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software
+# Foundation, Inc.
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='print -r --'
+  as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='printf %s\n'
+  as_echo_n='printf %s'
+else
+  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+    as_echo_n='/usr/ucb/echo -n'
+  else
+    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+    as_echo_n_body='eval
+      arg=$1;
+      case $arg in #(
+      *"$as_nl"*)
+	expr "X$arg" : "X\\(.*\\)$as_nl";
+	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+      esac;
+      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+    '
+    export as_echo_n_body
+    as_echo_n='sh -c $as_echo_n_body as_echo'
+  fi
+  export as_echo_body
+  as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" ""	$as_nl"
+
+# Find who we are.  Look in the path if we contain no directory separator.
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there.  '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+if test "x$CONFIG_SHELL" = x; then
+  as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '\${1+\"\$@\"}'='\"\$@\"'
+  setopt NO_GLOB_SUBST
+else
+  case \`(set -o) 2>/dev/null\` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+"
+  as_required="as_fn_return () { (exit \$1); }
+as_fn_success () { as_fn_return 0; }
+as_fn_failure () { as_fn_return 1; }
+as_fn_ret_success () { return 0; }
+as_fn_ret_failure () { return 1; }
+
+exitcode=0
+as_fn_success || { exitcode=1; echo as_fn_success failed.; }
+as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; }
+as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; }
+as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; }
+if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
+
+else
+  exitcode=1; echo positional parameters were not saved.
+fi
+test x\$exitcode = x0 || exit 1"
+  as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
+  as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
+  eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
+  test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1
+
+  test -n \"\${ZSH_VERSION+set}\${BASH_VERSION+set}\" || (
+    ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+    ECHO=\$ECHO\$ECHO\$ECHO\$ECHO\$ECHO
+    ECHO=\$ECHO\$ECHO\$ECHO\$ECHO\$ECHO\$ECHO
+    PATH=/empty FPATH=/empty; export PATH FPATH
+    test \"X\`printf %s \$ECHO\`\" = \"X\$ECHO\" \\
+      || test \"X\`print -r -- \$ECHO\`\" = \"X\$ECHO\" ) || exit 1
+test \$(( 1 + 1 )) = 2 || exit 1"
+  if (eval "$as_required") 2>/dev/null; then :
+  as_have_required=yes
+else
+  as_have_required=no
+fi
+  if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then :
+
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_found=false
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  as_found=:
+  case $as_dir in #(
+	 /*)
+	   for as_base in sh bash ksh sh5; do
+	     # Try only shells that exist, to save several forks.
+	     as_shell=$as_dir/$as_base
+	     if { test -f "$as_shell" || test -f "$as_shell.exe"; } &&
+		    { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then :
+  CONFIG_SHELL=$as_shell as_have_required=yes
+		   if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then :
+  break 2
+fi
+fi
+	   done;;
+       esac
+  as_found=false
+done
+$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
+	      { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then :
+  CONFIG_SHELL=$SHELL as_have_required=yes
+fi; }
+IFS=$as_save_IFS
+
+
+      if test "x$CONFIG_SHELL" != x; then :
+  # We cannot yet assume a decent shell, so we have to provide a
+	# neutralization value for shells without unset; and this also
+	# works around shells that cannot unset nonexistent variables.
+	BASH_ENV=/dev/null
+	ENV=/dev/null
+	(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+	export CONFIG_SHELL
+	exec "$CONFIG_SHELL" "$as_myself" ${1+"$@"}
+fi
+
+    if test x$as_have_required = xno; then :
+  $as_echo "$0: This script requires a shell more modern than all"
+  $as_echo "$0: the shells that I found on your system."
+  if test x${ZSH_VERSION+set} = xset ; then
+    $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should"
+    $as_echo "$0: be upgraded to zsh 4.3.4 or later."
+  else
+    $as_echo "$0: Please tell bug-autoconf@gnu.org about your system,
+$0: including any error possibly output before this
+$0: message. Then install a modern shell, or manually run
+$0: the script under such a shell if you do have one."
+  fi
+  exit 1
+fi
+fi
+fi
+SHELL=${CONFIG_SHELL-/bin/sh}
+export SHELL
+# Unset more variables known to interfere with behavior of common tools.
+CLICOLOR_FORCE= GREP_OPTIONS=
+unset CLICOLOR_FORCE GREP_OPTIONS
+
+## --------------------- ##
+## M4sh Shell Functions. ##
+## --------------------- ##
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+# as_fn_error ERROR [LINENO LOG_FD]
+# ---------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with status $?, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$?; test $as_status -eq 0 && as_status=1
+  if test "$3"; then
+    as_lineno=${as_lineno-"$2"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $1" >&$3
+  fi
+  $as_echo "$as_me: error: $1" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+
+  as_lineno_1=$LINENO as_lineno_1a=$LINENO
+  as_lineno_2=$LINENO as_lineno_2a=$LINENO
+  eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" &&
+  test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || {
+  # Blame Lee E. McMahon (1931-1989) for sed's syntax.  :-)
+  sed -n '
+    p
+    /[$]LINENO/=
+  ' <$as_myself |
+    sed '
+      s/[$]LINENO.*/&-/
+      t lineno
+      b
+      :lineno
+      N
+      :loop
+      s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/
+      t loop
+      s/-\n.*//
+    ' >$as_me.lineno &&
+  chmod +x "$as_me.lineno" ||
+    { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensitive to this).
+  . "./$as_me.lineno"
+  # Exit status is that of the last command.
+  exit
+}
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -p'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -p'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -p'
+  fi
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+if test -x / >/dev/null 2>&1; then
+  as_test_x='test -x'
+else
+  if ls -dL / >/dev/null 2>&1; then
+    as_ls_L_option=L
+  else
+    as_ls_L_option=
+  fi
+  as_test_x='
+    eval sh -c '\''
+      if test -d "$1"; then
+	test -d "$1/.";
+      else
+	case $1 in #(
+	-*)set "./$1";;
+	esac;
+	case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
+	???[sx]*):;;*)false;;esac;fi
+    '\'' sh
+  '
+fi
+as_executable_p=$as_test_x
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+SHELL=${CONFIG_SHELL-/bin/sh}
+
+
+exec 7<&0 </dev/null 6>&1
+
+# Name of the host.
+# hostname on some systems (SVR3.2, Linux) returns a bogus exit status,
+# so uname gets run too.
+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_clean_files=
+ac_config_libobj_dir=.
+LIBOBJS=
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+
+# Identity of this package.
+PACKAGE_NAME='package-unused'
+PACKAGE_TARNAME='libobjc'
+PACKAGE_VERSION='version-unused'
+PACKAGE_STRING='package-unused version-unused'
+PACKAGE_BUGREPORT=''
+PACKAGE_URL=''
+
+ac_unique_file="objc/objc.h"
+# Factoring default headers for most tests.
+ac_includes_default="\
+#include <stdio.h>
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_STRING_H
+# if !defined STDC_HEADERS && defined HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+# include <string.h>
+#endif
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#ifdef HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif"
+
+ac_subst_vars='LTLIBOBJS
+LIBOBJS
+SET_MAKE
+CPP
+OTOOL64
+OTOOL
+LIPO
+NMEDIT
+DSYMUTIL
+AWK
+STRIP
+LN_S
+NM
+ac_ct_DUMPBIN
+DUMPBIN
+LD
+FGREP
+EGREP
+GREP
+SED
+LIBTOOL
+OBJDUMP
+DLLTOOL
+MAINT
+MAINTAINER_MODE_FALSE
+MAINTAINER_MODE_TRUE
+INSTALL_DATA
+INSTALL_SCRIPT
+INSTALL_PROGRAM
+RANLIB
+AR
+AS
+extra_ldflags_libobjc
+lt_host_flags
+OBJEXT
+EXEEXT
+ac_ct_CC
+CPPFLAGS
+LDFLAGS
+CFLAGS
+CC
+libsuffix
+includedirname
+toolexeclibdir
+toolexecdir
+glibcpp_srcdir
+target_noncanonical
+target_os
+target_vendor
+target_cpu
+target
+host_os
+host_vendor
+host_cpu
+host
+multi_basedir
+OBJC_BOEHM_GC_INCLUDES
+OBJC_BOEHM_GC
+VERSION
+target_subdir
+host_subdir
+build_subdir
+build_libsubdir
+build_os
+build_vendor
+build_cpu
+build
+target_alias
+host_alias
+build_alias
+LIBS
+ECHO_T
+ECHO_N
+ECHO_C
+DEFS
+mandir
+localedir
+libdir
+psdir
+pdfdir
+dvidir
+htmldir
+infodir
+docdir
+oldincludedir
+includedir
+localstatedir
+sharedstatedir
+sysconfdir
+datadir
+datarootdir
+libexecdir
+sbindir
+bindir
+program_transform_name
+prefix
+exec_prefix
+PACKAGE_URL
+PACKAGE_BUGREPORT
+PACKAGE_STRING
+PACKAGE_VERSION
+PACKAGE_TARNAME
+PACKAGE_NAME
+PATH_SEPARATOR
+SHELL'
+ac_subst_files=''
+ac_user_opts='
+enable_option_checking
+with_build_libsubdir
+with_target_subdir
+with_cross_host
+enable_version_specific_runtime_libs
+enable_objc_gc
+enable_multilib
+enable_maintainer_mode
+enable_shared
+enable_static
+with_pic
+enable_fast_install
+with_gnu_ld
+enable_libtool_lock
+enable_tls
+enable_sjlj_exceptions
+'
+      ac_precious_vars='build_alias
+host_alias
+target_alias
+CPP
+CPPFLAGS'
+
+
+# Initialize some variables set by options.
+ac_init_help=
+ac_init_version=false
+ac_unrecognized_opts=
+ac_unrecognized_sep=
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+cache_file=/dev/null
+exec_prefix=NONE
+no_create=
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+verbose=
+x_includes=NONE
+x_libraries=NONE
+
+# Installation directory options.
+# These are left unexpanded so users can "make install exec_prefix=/foo"
+# and all the variables that are supposed to be based on exec_prefix
+# by default will actually change.
+# Use braces instead of parens because sh, perl, etc. also accept them.
+# (The list follows the same order as the GNU Coding Standards.)
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datarootdir='${prefix}/share'
+datadir='${datarootdir}'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
+infodir='${datarootdir}/info'
+htmldir='${docdir}'
+dvidir='${docdir}'
+pdfdir='${docdir}'
+psdir='${docdir}'
+libdir='${exec_prefix}/lib'
+localedir='${datarootdir}/locale'
+mandir='${datarootdir}/man'
+
+ac_prev=
+ac_dashdash=
+for ac_option
+do
+  # If the previous option needs an argument, assign it.
+  if test -n "$ac_prev"; then
+    eval $ac_prev=\$ac_option
+    ac_prev=
+    continue
+  fi
+
+  case $ac_option in
+  *=*)	ac_optarg=`expr "X$ac_option" : '[^=]*=\(.*\)'` ;;
+  *)	ac_optarg=yes ;;
+  esac
+
+  # Accept the important Cygnus configure options, so we can diagnose typos.
+
+  case $ac_dashdash$ac_option in
+  --)
+    ac_dashdash=yes ;;
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir=$ac_optarg ;;
+
+  -build | --build | --buil | --bui | --bu)
+    ac_prev=build_alias ;;
+  -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+    build_alias=$ac_optarg ;;
+
+  -cache-file | --cache-file | --cache-fil | --cache-fi \
+  | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+    ac_prev=cache_file ;;
+  -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+  | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+    cache_file=$ac_optarg ;;
+
+  --config-cache | -C)
+    cache_file=config.cache ;;
+
+  -datadir | --datadir | --datadi | --datad)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=*)
+    datadir=$ac_optarg ;;
+
+  -datarootdir | --datarootdir | --datarootdi | --datarootd | --dataroot \
+  | --dataroo | --dataro | --datar)
+    ac_prev=datarootdir ;;
+  -datarootdir=* | --datarootdir=* | --datarootdi=* | --datarootd=* \
+  | --dataroot=* | --dataroo=* | --dataro=* | --datar=*)
+    datarootdir=$ac_optarg ;;
+
+  -disable-* | --disable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error "invalid feature name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--disable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=no ;;
+
+  -docdir | --docdir | --docdi | --doc | --do)
+    ac_prev=docdir ;;
+  -docdir=* | --docdir=* | --docdi=* | --doc=* | --do=*)
+    docdir=$ac_optarg ;;
+
+  -dvidir | --dvidir | --dvidi | --dvid | --dvi | --dv)
+    ac_prev=dvidir ;;
+  -dvidir=* | --dvidir=* | --dvidi=* | --dvid=* | --dvi=* | --dv=*)
+    dvidir=$ac_optarg ;;
+
+  -enable-* | --enable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error "invalid feature name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--enable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=\$ac_optarg ;;
+
+  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+  | --exec | --exe | --ex)
+    ac_prev=exec_prefix ;;
+  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+  | --exec=* | --exe=* | --ex=*)
+    exec_prefix=$ac_optarg ;;
+
+  -gas | --gas | --ga | --g)
+    # Obsolete; use --with-gas.
+    with_gas=yes ;;
+
+  -help | --help | --hel | --he | -h)
+    ac_init_help=long ;;
+  -help=r* | --help=r* | --hel=r* | --he=r* | -hr*)
+    ac_init_help=recursive ;;
+  -help=s* | --help=s* | --hel=s* | --he=s* | -hs*)
+    ac_init_help=short ;;
+
+  -host | --host | --hos | --ho)
+    ac_prev=host_alias ;;
+  -host=* | --host=* | --hos=* | --ho=*)
+    host_alias=$ac_optarg ;;
+
+  -htmldir | --htmldir | --htmldi | --htmld | --html | --htm | --ht)
+    ac_prev=htmldir ;;
+  -htmldir=* | --htmldir=* | --htmldi=* | --htmld=* | --html=* | --htm=* \
+  | --ht=*)
+    htmldir=$ac_optarg ;;
+
+  -includedir | --includedir | --includedi | --included | --include \
+  | --includ | --inclu | --incl | --inc)
+    ac_prev=includedir ;;
+  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+  | --includ=* | --inclu=* | --incl=* | --inc=*)
+    includedir=$ac_optarg ;;
+
+  -infodir | --infodir | --infodi | --infod | --info | --inf)
+    ac_prev=infodir ;;
+  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+    infodir=$ac_optarg ;;
+
+  -libdir | --libdir | --libdi | --libd)
+    ac_prev=libdir ;;
+  -libdir=* | --libdir=* | --libdi=* | --libd=*)
+    libdir=$ac_optarg ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir=$ac_optarg ;;
+
+  -localedir | --localedir | --localedi | --localed | --locale)
+    ac_prev=localedir ;;
+  -localedir=* | --localedir=* | --localedi=* | --localed=* | --locale=*)
+    localedir=$ac_optarg ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst | --locals)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* | --locals=*)
+    localstatedir=$ac_optarg ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir=$ac_optarg ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c | -n)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir=$ac_optarg ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix=$ac_optarg ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix=$ac_optarg ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix=$ac_optarg ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name=$ac_optarg ;;
+
+  -pdfdir | --pdfdir | --pdfdi | --pdfd | --pdf | --pd)
+    ac_prev=pdfdir ;;
+  -pdfdir=* | --pdfdir=* | --pdfdi=* | --pdfd=* | --pdf=* | --pd=*)
+    pdfdir=$ac_optarg ;;
+
+  -psdir | --psdir | --psdi | --psd | --ps)
+    ac_prev=psdir ;;
+  -psdir=* | --psdir=* | --psdi=* | --psd=* | --ps=*)
+    psdir=$ac_optarg ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir=$ac_optarg ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir=$ac_optarg ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site=$ac_optarg ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir=$ac_optarg ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir=$ac_optarg ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target_alias ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target_alias=$ac_optarg ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers | -V)
+    ac_init_version=: ;;
+
+  -with-* | --with-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error "invalid package name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--with-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=\$ac_optarg ;;
+
+  -without-* | --without-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*without-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error "invalid package name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--without-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=no ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
+
+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+  | --x-incl | --x-inc | --x-in | --x-i)
+    ac_prev=x_includes ;;
+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+    x_includes=$ac_optarg ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
+  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+    x_libraries=$ac_optarg ;;
+
+  -*) as_fn_error "unrecognized option: \`$ac_option'
+Try \`$0 --help' for more information."
+    ;;
+
+  *=*)
+    ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
+    # Reject names that are not valid shell variable names.
+    case $ac_envvar in #(
+      '' | [0-9]* | *[!_$as_cr_alnum]* )
+      as_fn_error "invalid variable name: \`$ac_envvar'" ;;
+    esac
+    eval $ac_envvar=\$ac_optarg
+    export $ac_envvar ;;
+
+  *)
+    # FIXME: should be removed in autoconf 3.0.
+    $as_echo "$as_me: WARNING: you should use --build, --host, --target" >&2
+    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
+      $as_echo "$as_me: WARNING: invalid host type: $ac_option" >&2
+    : ${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
+  ac_option=--`echo $ac_prev | sed 's/_/-/g'`
+  as_fn_error "missing argument to $ac_option"
+fi
+
+if test -n "$ac_unrecognized_opts"; then
+  case $enable_option_checking in
+    no) ;;
+    fatal) as_fn_error "unrecognized options: $ac_unrecognized_opts" ;;
+    *)     $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
+  esac
+fi
+
+# Check all directory arguments for consistency.
+for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
+		datadir sysconfdir sharedstatedir localstatedir includedir \
+		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
+		libdir localedir mandir
+do
+  eval ac_val=\$$ac_var
+  # Remove trailing slashes.
+  case $ac_val in
+    */ )
+      ac_val=`expr "X$ac_val" : 'X\(.*[^/]\)' \| "X$ac_val" : 'X\(.*\)'`
+      eval $ac_var=\$ac_val;;
+  esac
+  # Be sure to have absolute directory names.
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* )  continue;;
+    NONE | '' ) case $ac_var in *prefix ) continue;; esac;;
+  esac
+  as_fn_error "expected an absolute directory name for --$ac_var: $ac_val"
+done
+
+# There might be people who depend on the old broken behavior: `$host'
+# used to hold the argument of --host etc.
+# FIXME: To remove some day.
+build=$build_alias
+host=$host_alias
+target=$target_alias
+
+# FIXME: To remove some day.
+if test "x$host_alias" != x; then
+  if test "x$build_alias" = x; then
+    cross_compiling=maybe
+    $as_echo "$as_me: WARNING: If you wanted to set the --build type, don't use --host.
+    If a cross compiler is detected then cross compile mode will be used." >&2
+  elif test "x$build_alias" != "x$host_alias"; then
+    cross_compiling=yes
+  fi
+fi
+
+ac_tool_prefix=
+test -n "$host_alias" && ac_tool_prefix=$host_alias-
+
+test "$silent" = yes && exec 6>/dev/null
+
+
+ac_pwd=`pwd` && test -n "$ac_pwd" &&
+ac_ls_di=`ls -di .` &&
+ac_pwd_ls_di=`cd "$ac_pwd" && ls -di .` ||
+  as_fn_error "working directory cannot be determined"
+test "X$ac_ls_di" = "X$ac_pwd_ls_di" ||
+  as_fn_error "pwd does not report name of working directory"
+
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then the parent directory.
+  ac_confdir=`$as_dirname -- "$as_myself" ||
+$as_expr X"$as_myself" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_myself" : 'X\(//\)[^/]' \| \
+	 X"$as_myself" : 'X\(//\)$' \| \
+	 X"$as_myself" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_myself" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  srcdir=$ac_confdir
+  if test ! -r "$srcdir/$ac_unique_file"; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r "$srcdir/$ac_unique_file"; then
+  test "$ac_srcdir_defaulted" = yes && srcdir="$ac_confdir or .."
+  as_fn_error "cannot find sources ($ac_unique_file) in $srcdir"
+fi
+ac_msg="sources are in $srcdir, but \`cd $srcdir' does not work"
+ac_abs_confdir=`(
+	cd "$srcdir" && test -r "./$ac_unique_file" || as_fn_error "$ac_msg"
+	pwd)`
+# When building in place, set srcdir=.
+if test "$ac_abs_confdir" = "$ac_pwd"; then
+  srcdir=.
+fi
+# Remove unnecessary trailing slashes from srcdir.
+# Double slashes in file names in object file debugging info
+# mess up M-x gdb in Emacs.
+case $srcdir in
+*/) srcdir=`expr "X$srcdir" : 'X\(.*[^/]\)' \| "X$srcdir" : 'X\(.*\)'`;;
+esac
+for ac_var in $ac_precious_vars; do
+  eval ac_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_env_${ac_var}_value=\$${ac_var}
+  eval ac_cv_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_cv_env_${ac_var}_value=\$${ac_var}
+done
+
+#
+# Report the --help message.
+#
+if test "$ac_init_help" = "long"; then
+  # Omit some internal or obsolete options to make the list less imposing.
+  # This message is too long to be a string in the A/UX 3.1 sh.
+  cat <<_ACEOF
+\`configure' configures package-unused version-unused to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE.  See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+  -h, --help              display this help and exit
+      --help=short        display options specific to this package
+      --help=recursive    display the short help of all the included packages
+  -V, --version           display version information and exit
+  -q, --quiet, --silent   do not print \`checking...' messages
+      --cache-file=FILE   cache test results in FILE [disabled]
+  -C, --config-cache      alias for \`--cache-file=config.cache'
+  -n, --no-create         do not create output files
+      --srcdir=DIR        find the sources in DIR [configure dir or \`..']
+
+Installation directories:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+                          [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+                          [PREFIX]
+
+By default, \`make install' will install all the files in
+\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc.  You can specify
+an installation prefix other than \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+  --bindir=DIR            user executables [EPREFIX/bin]
+  --sbindir=DIR           system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR        program executables [EPREFIX/libexec]
+  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
+  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --libdir=DIR            object code libraries [EPREFIX/lib]
+  --includedir=DIR        C header files [PREFIX/include]
+  --oldincludedir=DIR     C header files for non-gcc [/usr/include]
+  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
+  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
+  --infodir=DIR           info documentation [DATAROOTDIR/info]
+  --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]
+  --mandir=DIR            man documentation [DATAROOTDIR/man]
+  --docdir=DIR            documentation root [DATAROOTDIR/doc/libobjc]
+  --htmldir=DIR           html documentation [DOCDIR]
+  --dvidir=DIR            dvi documentation [DOCDIR]
+  --pdfdir=DIR            pdf documentation [DOCDIR]
+  --psdir=DIR             ps documentation [DOCDIR]
+_ACEOF
+
+  cat <<\_ACEOF
+
+System types:
+  --build=BUILD     configure for building on BUILD [guessed]
+  --host=HOST       cross-compile to build programs to run on HOST [BUILD]
+  --target=TARGET   configure for building compilers for TARGET [HOST]
+_ACEOF
+fi
+
+if test -n "$ac_init_help"; then
+  case $ac_init_help in
+     short | recursive ) echo "Configuration of package-unused version-unused:";;
+   esac
+  cat <<\_ACEOF
+
+Optional Features:
+  --disable-option-checking  ignore unrecognized --enable/--with options
+  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
+  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory
+  --enable-objc-gc       enable the use of Boehm's garbage collector with
+                          the GNU Objective-C runtime.
+  --enable-multilib       build many library versions (default)
+  --enable-maintainer-mode  enable make rules and dependencies not useful
+			  (and sometimes confusing) to the casual installer
+  --enable-shared[=PKGS]  build shared libraries [default=yes]
+  --enable-static[=PKGS]  build static libraries [default=yes]
+  --enable-fast-install[=PKGS]
+                          optimize for fast installation [default=yes]
+  --disable-libtool-lock  avoid locking (might break parallel builds)
+  --enable-tls            Use thread-local storage [default=yes]
+  --enable-sjlj-exceptions
+                          force use of builtin_setjmp for exceptions
+
+Optional Packages:
+  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
+  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
+  --with-build-libsubdir=DIR  Directory where to find libraries for build system
+  --with-target-subdir=SUBDIR
+                           configuring in a subdirectory
+  --with-cross-host=HOST  configuring with a cross compiler
+  --with-pic              try to use only PIC/non-PIC objects [default=use
+                          both]
+  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]
+
+Some influential environment variables:
+  CC          C compiler command
+  CFLAGS      C compiler flags
+  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
+              nonstandard directory <lib dir>
+  LIBS        libraries to pass to the linker, e.g. -l<library>
+  CPPFLAGS    C/C++/Objective C preprocessor flags, e.g. -I<include dir> if
+              you have headers in a nonstandard directory <include dir>
+  CPP         C preprocessor
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+Report bugs to the package provider.
+_ACEOF
+ac_status=$?
+fi
+
+if test "$ac_init_help" = "recursive"; then
+  # If there are subdirs, report their specific --help.
+  for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
+    test -d "$ac_dir" ||
+      { cd "$srcdir" && ac_pwd=`pwd` && srcdir=. && test -d "$ac_dir"; } ||
+      continue
+    ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+    cd "$ac_dir" || { ac_status=$?; continue; }
+    # Check for guested configure.
+    if test -f "$ac_srcdir/configure.gnu"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure.gnu" --help=recursive
+    elif test -f "$ac_srcdir/configure"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure" --help=recursive
+    else
+      $as_echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+    fi || ac_status=$?
+    cd "$ac_pwd" || { ac_status=$?; break; }
+  done
+fi
+
+test -n "$ac_init_help" && exit $ac_status
+if $ac_init_version; then
+  cat <<\_ACEOF
+package-unused configure version-unused
+generated by GNU Autoconf 2.64
+
+Copyright (C) 2009 Free Software Foundation, Inc.
+This configure script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it.
+_ACEOF
+  exit
+fi
+
+## ------------------------ ##
+## Autoconf initialization. ##
+## ------------------------ ##
+
+# ac_fn_c_try_compile LINENO
+# --------------------------
+# Try to compile conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext
+  if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  return $ac_retval
+
+} # ac_fn_c_try_compile
+
+# ac_fn_c_try_link LINENO
+# -----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_link ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext conftest$ac_exeext
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext && {
+	 test "$cross_compiling" = yes ||
+	 $as_test_x conftest$ac_exeext
+       }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information
+  # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would
+  # interfere with the next link command; also delete a directory that is
+  # left behind by Apple's compiler.  We do this before executing the actions.
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  return $ac_retval
+
+} # ac_fn_c_try_link
+
+# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists and can be compiled using the include files in
+# INCLUDES, setting the cache variable VAR accordingly.
+ac_fn_c_check_header_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+
+} # ac_fn_c_check_header_compile
+
+# ac_fn_c_try_cpp LINENO
+# ----------------------
+# Try to preprocess conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_cpp ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } >/dev/null && {
+	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+    ac_retval=1
+fi
+  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  return $ac_retval
+
+} # ac_fn_c_try_cpp
+
+# ac_fn_c_try_run LINENO
+# ----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded. Assumes
+# that executables *can* be run.
+ac_fn_c_try_run ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: program exited with status $ac_status" >&5
+       $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+       ac_retval=$ac_status
+fi
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  return $ac_retval
+
+} # ac_fn_c_try_run
+
+# ac_fn_c_check_func LINENO FUNC VAR
+# ----------------------------------
+# Tests whether FUNC exists, setting the cache variable VAR accordingly
+ac_fn_c_check_func ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+/* Define $2 to an innocuous variant, in case <limits.h> declares $2.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $2 innocuous_$2
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $2 (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $2
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char $2 ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined __stub_$2 || defined __stub___$2
+choke me
+#endif
+
+int
+main ()
+{
+return $2 ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+
+} # ac_fn_c_check_func
+
+# ac_fn_c_check_header_mongrel LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists, giving a warning if it cannot be compiled using
+# the include files in INCLUDES and setting the cache variable VAR
+# accordingly.
+ac_fn_c_check_header_mongrel ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+  $as_echo_n "(cached) " >&6
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+else
+  # Is the header compilable?
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 usability" >&5
+$as_echo_n "checking $2 usability... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_header_compiler=yes
+else
+  ac_header_compiler=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_compiler" >&5
+$as_echo "$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 presence" >&5
+$as_echo_n "checking $2 presence... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <$2>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  ac_header_preproc=yes
+else
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_preproc" >&5
+$as_echo "$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in #((
+  yes:no: )
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&5
+$as_echo "$as_me: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
+$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
+    ;;
+  no:yes:* )
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: present but cannot be compiled" >&5
+$as_echo "$as_me: WARNING: $2: present but cannot be compiled" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2:     check for missing prerequisite headers?" >&5
+$as_echo "$as_me: WARNING: $2:     check for missing prerequisite headers?" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: see the Autoconf documentation" >&5
+$as_echo "$as_me: WARNING: $2: see the Autoconf documentation" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2:     section \"Present But Cannot Be Compiled\"" >&5
+$as_echo "$as_me: WARNING: $2:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
+$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
+    ;;
+esac
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+  $as_echo_n "(cached) " >&6
+else
+  eval "$3=\$ac_header_compiler"
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+fi
+  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+
+} # ac_fn_c_check_header_mongrel
+cat >config.log <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by package-unused $as_me version-unused, which was
+generated by GNU Autoconf 2.64.  Invocation command line was
+
+  $ $0 $@
+
+_ACEOF
+exec 5>>config.log
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`
+
+/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+/usr/bin/hostinfo      = `(/usr/bin/hostinfo) 2>/dev/null      || echo unknown`
+/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
+/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    $as_echo "PATH: $as_dir"
+  done
+IFS=$as_save_IFS
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+  for ac_arg
+  do
+    case $ac_arg in
+    -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+    -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+    | -silent | --silent | --silen | --sile | --sil)
+      continue ;;
+    *\'*)
+      ac_arg=`$as_echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    case $ac_pass in
+    1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;
+    2)
+      as_fn_append ac_configure_args1 " '$ac_arg'"
+      if test $ac_must_keep_next = true; then
+	ac_must_keep_next=false # Got value, back to normal.
+      else
+	case $ac_arg in
+	  *=* | --config-cache | -C | -disable-* | --disable-* \
+	  | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+	  | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+	  | -with-* | --with-* | -without-* | --without-* | --x)
+	    case "$ac_configure_args0 " in
+	      "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+	    esac
+	    ;;
+	  -* ) ac_must_keep_next=true ;;
+	esac
+      fi
+      as_fn_append ac_configure_args " '$ac_arg'"
+      ;;
+    esac
+  done
+done
+{ ac_configure_args0=; unset ac_configure_args0;}
+{ ac_configure_args1=; unset ac_configure_args1;}
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log.  We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Use '\'' to represent an apostrophe within the trap.
+# WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.
+trap 'exit_status=$?
+  # Save into config.log some information that might help in debugging.
+  {
+    echo
+
+    cat <<\_ASBOX
+## ---------------- ##
+## Cache variables. ##
+## ---------------- ##
+_ASBOX
+    echo
+    # The following way of writing the cache mishandles newlines in values,
+(
+  for ac_var in `(set) 2>&1 | sed -n '\''s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'\''`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+  (set) 2>&1 |
+    case $as_nl`(ac_space='\'' '\''; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      sed -n \
+	"s/'\''/'\''\\\\'\'''\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\''\\2'\''/p"
+      ;; #(
+    *)
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+)
+    echo
+
+    cat <<\_ASBOX
+## ----------------- ##
+## Output variables. ##
+## ----------------- ##
+_ASBOX
+    echo
+    for ac_var in $ac_subst_vars
+    do
+      eval ac_val=\$$ac_var
+      case $ac_val in
+      *\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+      esac
+      $as_echo "$ac_var='\''$ac_val'\''"
+    done | sort
+    echo
+
+    if test -n "$ac_subst_files"; then
+      cat <<\_ASBOX
+## ------------------- ##
+## File substitutions. ##
+## ------------------- ##
+_ASBOX
+      echo
+      for ac_var in $ac_subst_files
+      do
+	eval ac_val=\$$ac_var
+	case $ac_val in
+	*\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+	esac
+	$as_echo "$ac_var='\''$ac_val'\''"
+      done | sort
+      echo
+    fi
+
+    if test -s confdefs.h; then
+      cat <<\_ASBOX
+## ----------- ##
+## confdefs.h. ##
+## ----------- ##
+_ASBOX
+      echo
+      cat confdefs.h
+      echo
+    fi
+    test "$ac_signal" != 0 &&
+      $as_echo "$as_me: caught signal $ac_signal"
+    $as_echo "$as_me: exit $exit_status"
+  } >&5
+  rm -f core *.core core.conftest.* &&
+    rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&
+    exit $exit_status
+' 0
+for ac_signal in 1 2 13 15; do
+  trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -f -r conftest* confdefs.h
+
+$as_echo "/* confdefs.h */" > confdefs.h
+
+# Predefined preprocessor variables.
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_NAME "$PACKAGE_NAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_VERSION "$PACKAGE_VERSION"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_STRING "$PACKAGE_STRING"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_URL "$PACKAGE_URL"
+_ACEOF
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer an explicitly selected file to automatically selected ones.
+ac_site_file1=NONE
+ac_site_file2=NONE
+if test -n "$CONFIG_SITE"; then
+  ac_site_file1=$CONFIG_SITE
+elif test "x$prefix" != xNONE; then
+  ac_site_file1=$prefix/share/config.site
+  ac_site_file2=$prefix/etc/config.site
+else
+  ac_site_file1=$ac_default_prefix/share/config.site
+  ac_site_file2=$ac_default_prefix/etc/config.site
+fi
+for ac_site_file in "$ac_site_file1" "$ac_site_file2"
+do
+  test "x$ac_site_file" = xNONE && continue
+  if test -r "$ac_site_file"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
+$as_echo "$as_me: loading site script $ac_site_file" >&6;}
+    sed 's/^/| /' "$ac_site_file" >&5
+    . "$ac_site_file"
+  fi
+done
+
+if test -r "$cache_file"; then
+  # Some versions of bash will fail to source /dev/null (special
+  # files actually), so we avoid doing that.
+  if test -f "$cache_file"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
+$as_echo "$as_me: loading cache $cache_file" >&6;}
+    case $cache_file in
+      [\\/]* | ?:[\\/]* ) . "$cache_file";;
+      *)                      . "./$cache_file";;
+    esac
+  fi
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
+$as_echo "$as_me: creating cache $cache_file" >&6;}
+  >$cache_file
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in $ac_precious_vars; do
+  eval ac_old_set=\$ac_cv_env_${ac_var}_set
+  eval ac_new_set=\$ac_env_${ac_var}_set
+  eval ac_old_val=\$ac_cv_env_${ac_var}_value
+  eval ac_new_val=\$ac_env_${ac_var}_value
+  case $ac_old_set,$ac_new_set in
+    set,)
+      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,set)
+      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,);;
+    *)
+      if test "x$ac_old_val" != "x$ac_new_val"; then
+	# differences in whitespace do not lead to failure.
+	ac_old_val_w=`echo x $ac_old_val`
+	ac_new_val_w=`echo x $ac_new_val`
+	if test "$ac_old_val_w" != "$ac_new_val_w"; then
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5
+$as_echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+	  ac_cache_corrupted=:
+	else
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5
+$as_echo "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}
+	  eval $ac_var=\$ac_old_val
+	fi
+	{ $as_echo "$as_me:${as_lineno-$LINENO}:   former value:  \`$ac_old_val'" >&5
+$as_echo "$as_me:   former value:  \`$ac_old_val'" >&2;}
+	{ $as_echo "$as_me:${as_lineno-$LINENO}:   current value: \`$ac_new_val'" >&5
+$as_echo "$as_me:   current value: \`$ac_new_val'" >&2;}
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+    *\'*) ac_arg=$ac_var=`$as_echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *) ac_arg=$ac_var=$ac_new_val ;;
+    esac
+    case " $ac_configure_args " in
+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
+      *) as_fn_append ac_configure_args " '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+  { $as_echo "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
+$as_echo "$as_me: error: changes in the environment can compromise the build" >&2;}
+  as_fn_error "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5
+fi
+## -------------------- ##
+## Main body of script. ##
+## -------------------- ##
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
+
+
+ac_aux_dir=
+for ac_dir in "$srcdir" "$srcdir/.." "$srcdir/../.."; do
+  for ac_t in install-sh install.sh shtool; do
+    if test -f "$ac_dir/$ac_t"; then
+      ac_aux_dir=$ac_dir
+      ac_install_sh="$ac_aux_dir/$ac_t -c"
+      break 2
+    fi
+  done
+done
+if test -z "$ac_aux_dir"; then
+  as_fn_error "cannot find install-sh, install.sh, or shtool in \"$srcdir\" \"$srcdir/..\" \"$srcdir/../..\"" "$LINENO" 5
+fi
+
+# These three variables are undocumented and unsupported,
+# and are intended to be withdrawn in a future Autoconf release.
+# They can cause serious problems if a builder's source tree is in a directory
+# whose full name contains unusual characters.
+ac_config_guess="$SHELL $ac_aux_dir/config.guess"  # Please don't use this var.
+ac_config_sub="$SHELL $ac_aux_dir/config.sub"  # Please don't use this var.
+ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
+
+
+# Make sure we can run config.sub.
+$SHELL "$ac_aux_dir/config.sub" sun4 >/dev/null 2>&1 ||
+  as_fn_error "cannot run $SHELL $ac_aux_dir/config.sub" "$LINENO" 5
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking build system type" >&5
+$as_echo_n "checking build system type... " >&6; }
+if test "${ac_cv_build+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_build_alias=$build_alias
+test "x$ac_build_alias" = x &&
+  ac_build_alias=`$SHELL "$ac_aux_dir/config.guess"`
+test "x$ac_build_alias" = x &&
+  as_fn_error "cannot guess build type; you must specify one" "$LINENO" 5
+ac_cv_build=`$SHELL "$ac_aux_dir/config.sub" $ac_build_alias` ||
+  as_fn_error "$SHELL $ac_aux_dir/config.sub $ac_build_alias failed" "$LINENO" 5
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5
+$as_echo "$ac_cv_build" >&6; }
+case $ac_cv_build in
+*-*-*) ;;
+*) as_fn_error "invalid value of canonical build" "$LINENO" 5;;
+esac
+build=$ac_cv_build
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_build
+shift
+build_cpu=$1
+build_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+build_os=$*
+IFS=$ac_save_IFS
+case $build_os in *\ *) build_os=`echo "$build_os" | sed 's/ /-/g'`;; esac
+
+
+ case ${build_alias} in
+  "") build_noncanonical=${build} ;;
+  *) build_noncanonical=${build_alias} ;;
+esac
+
+ case ${host_alias} in
+  "") host_noncanonical=${build_noncanonical} ;;
+  *) host_noncanonical=${host_alias} ;;
+esac
+
+ case ${target_alias} in
+  "") target_noncanonical=${host_noncanonical} ;;
+  *) target_noncanonical=${target_alias} ;;
+esac
+
+
+# post-stage1 host modules use a different CC_FOR_BUILD so, in order to
+# have matching libraries, they should use host libraries: Makefile.tpl
+# arranges to pass --with-build-libsubdir=$(HOST_SUBDIR).
+# However, they still use the build modules, because the corresponding
+# host modules (e.g. bison) are only built for the host when bootstrap
+# finishes. So:
+# - build_subdir is where we find build modules, and never changes.
+# - build_libsubdir is where we find build libraries, and can be overridden.
+
+# Prefix 'build-' so this never conflicts with target_subdir.
+build_subdir="build-${build_noncanonical}"
+
+# Check whether --with-build-libsubdir was given.
+if test "${with_build_libsubdir+set}" = set; then :
+  withval=$with_build_libsubdir; build_libsubdir="$withval"
+else
+  build_libsubdir="$build_subdir"
+fi
+
+# --srcdir=. covers the toplevel, while "test -d" covers the subdirectories
+if ( test $srcdir = . && test -d gcc ) \
+   || test -d $srcdir/../host-${host_noncanonical}; then
+  host_subdir="host-${host_noncanonical}"
+else
+  host_subdir=.
+fi
+# No prefix.
+target_subdir=${target_noncanonical}
+
+
+# We need the following definitions because AC_PROG_LIBTOOL relies on them
+PACKAGE=libobjc
+# Version is pulled out to make it a bit easier to change using sed.
+VERSION=3:0:0
+
+
+# This works around the fact that libtool configuration may change LD
+# for this particular configuration, but some shells, instead of
+# keeping the changes in LD private, export them just because LD is
+# exported.
+ORIGINAL_LD_FOR_MULTILIBS=$LD
+
+# -------
+# Options
+# -------
+
+# We use these options to decide which functions to include.
+
+# Check whether --with-target-subdir was given.
+if test "${with_target_subdir+set}" = set; then :
+  withval=$with_target_subdir;
+fi
+
+
+# Check whether --with-cross-host was given.
+if test "${with_cross_host+set}" = set; then :
+  withval=$with_cross_host;
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --enable-version-specific-runtime-libs" >&5
+$as_echo_n "checking for --enable-version-specific-runtime-libs... " >&6; }
+# Check whether --enable-version-specific-runtime-libs was given.
+if test "${enable_version_specific_runtime_libs+set}" = set; then :
+  enableval=$enable_version_specific_runtime_libs; case "$enableval" in
+ yes) version_specific_libs=yes ;;
+ no)  version_specific_libs=no ;;
+ *)   as_fn_error "Unknown argument to enable/disable version-specific libs" "$LINENO" 5;;
+ esac
+else
+  version_specific_libs=no
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $version_specific_libs" >&5
+$as_echo "$version_specific_libs" >&6; }
+
+# Check whether --enable-objc-gc was given.
+if test "${enable_objc_gc+set}" = set; then :
+  enableval=$enable_objc_gc; case $enable_objc_gc in
+  no)
+    OBJC_BOEHM_GC=''
+    OBJC_BOEHM_GC_INCLUDES=''
+    ;;
+  *)
+    OBJC_BOEHM_GC=libobjc_gc.la
+    OBJC_BOEHM_GC_INCLUDES='-I$(top_srcdir)/../boehm-gc/include -I../boehm-gc/include'
+    ;;
+esac
+else
+  OBJC_BOEHM_GC=''; OBJC_BOEHM_GC_INCLUDES=''
+fi
+
+
+
+
+# -----------
+# Directories
+# -----------
+
+# Find the rest of the source tree framework.
+# Default to --enable-multilib
+# Check whether --enable-multilib was given.
+if test "${enable_multilib+set}" = set; then :
+  enableval=$enable_multilib; case "$enableval" in
+  yes) multilib=yes ;;
+  no)  multilib=no ;;
+  *)   as_fn_error "bad value $enableval for multilib option" "$LINENO" 5 ;;
+ esac
+else
+  multilib=yes
+fi
+
+
+# We may get other options which we leave undocumented:
+# --with-target-subdir, --with-multisrctop, --with-multisubdir
+# See config-ml.in if you want the gory details.
+
+if test "$srcdir" = "."; then
+  if test "$with_target_subdir" != "."; then
+    multi_basedir="$srcdir/$with_multisrctop../.."
+  else
+    multi_basedir="$srcdir/$with_multisrctop.."
+  fi
+else
+  multi_basedir="$srcdir/.."
+fi
+
+
+# Even if the default multilib is not a cross compilation,
+# it may be that some of the other multilibs are.
+if test $cross_compiling = no && test $multilib = yes \
+   && test "x${with_multisubdir}" != x ; then
+   cross_compiling=maybe
+fi
+
+ac_config_commands="$ac_config_commands default-1"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking host system type" >&5
+$as_echo_n "checking host system type... " >&6; }
+if test "${ac_cv_host+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test "x$host_alias" = x; then
+  ac_cv_host=$ac_cv_build
+else
+  ac_cv_host=`$SHELL "$ac_aux_dir/config.sub" $host_alias` ||
+    as_fn_error "$SHELL $ac_aux_dir/config.sub $host_alias failed" "$LINENO" 5
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5
+$as_echo "$ac_cv_host" >&6; }
+case $ac_cv_host in
+*-*-*) ;;
+*) as_fn_error "invalid value of canonical host" "$LINENO" 5;;
+esac
+host=$ac_cv_host
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_host
+shift
+host_cpu=$1
+host_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+host_os=$*
+IFS=$ac_save_IFS
+case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking target system type" >&5
+$as_echo_n "checking target system type... " >&6; }
+if test "${ac_cv_target+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test "x$target_alias" = x; then
+  ac_cv_target=$ac_cv_host
+else
+  ac_cv_target=`$SHELL "$ac_aux_dir/config.sub" $target_alias` ||
+    as_fn_error "$SHELL $ac_aux_dir/config.sub $target_alias failed" "$LINENO" 5
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_target" >&5
+$as_echo "$ac_cv_target" >&6; }
+case $ac_cv_target in
+*-*-*) ;;
+*) as_fn_error "invalid value of canonical target" "$LINENO" 5;;
+esac
+target=$ac_cv_target
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_target
+shift
+target_cpu=$1
+target_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+target_os=$*
+IFS=$ac_save_IFS
+case $target_os in *\ *) target_os=`echo "$target_os" | sed 's/ /-/g'`;; esac
+
+
+# The aliases save the names the user supplied, while $host etc.
+# will get canonicalized.
+test -n "$target_alias" &&
+  test "$program_prefix$program_suffix$program_transform_name" = \
+    NONENONEs,x,x, &&
+  program_prefix=${target_alias}-
+
+
+
+
+# Export source directory.
+# These need to be absolute paths, yet at the same time need to
+# canonicalize only relative paths, because then amd will not unmount
+# drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
+case $srcdir in
+  \\/$* | ?:\\/*) glibcpp_srcdir=${srcdir} ;;
+  *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
+esac
+
+
+# Calculate toolexeclibdir
+# Also toolexecdir, though it's only used in toolexeclibdir
+case ${version_specific_libs} in
+  yes)
+    # Need the gcc compiler version to know where to install libraries
+    # and header files if --enable-version-specific-runtime-libs option
+    # is selected.
+    toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
+    toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
+    ;;
+  no)
+    if test -n "$with_cross_host" &&
+       test x"$with_cross_host" != x"no"; then
+      # Install a library built with a cross compiler in tooldir, not libdir.
+      toolexecdir='$(exec_prefix)/$(target_noncanonical)'
+      toolexeclibdir='$(toolexecdir)/lib'
+    else
+      toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
+      toolexeclibdir='$(libdir)'
+    fi
+    multi_os_directory=`$CC -print-multi-os-directory`
+    case $multi_os_directory in
+      .) ;; # Avoid trailing /.
+      *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
+    esac
+    ;;
+esac
+
+
+
+# Figure out if we want to name the include directory and the
+#  library name changes differently.
+includedirname=include
+libsuffix=
+case "${host}" in
+  *-darwin*)
+    # Darwin is the only target so far that needs a different include directory.
+    includedirname=include-gnu-runtime
+    libsuffix=-gnu
+    ;;
+esac
+
+
+
+ac_config_headers="$ac_config_headers config.h"
+
+
+# --------
+# Programs
+# --------
+
+
+
+# We must force CC to /not/ be a precious variable; otherwise
+# the wrong, non-multilib-adjusted value will be used in multilibs.
+# As a side effect, we have to subst CFLAGS ourselves.
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+          if test -n "$ac_tool_prefix"; then
+    # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  fi
+fi
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# != 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+  fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl.exe
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl.exe
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_CC" && break
+done
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+fi
+
+fi
+
+
+test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "no acceptable C compiler found in \$PATH
+See \`config.log' for more details." "$LINENO" 5; }
+
+# Provide some information about the compiler.
+$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion; do
+  { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    sed '10a\
+... rest of stderr output deleted ...
+         10q' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    rm -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+done
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+# FIXME: Cleanup?
+if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  gcc_no_link=no
+else
+  gcc_no_link=yes
+fi
+if test x$gcc_no_link = xyes; then
+  # Setting cross_compile will disable run tests; it will
+  # also disable AC_CHECK_FILE but that's generally
+  # correct if we can't link.
+  cross_compiling=yes
+  EXEEXT=
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out conftest.out"
+# Try to create an executable without -o first, disregard a.out.
+# It will help us diagnose broken compilers, and finding out an intuition
+# of exeext.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
+$as_echo_n "checking for C compiler default output file name... " >&6; }
+ac_link_default=`$as_echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+
+# The possible output files:
+ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*"
+
+ac_rmfiles=
+for ac_file in $ac_files
+do
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    * ) ac_rmfiles="$ac_rmfiles $ac_file";;
+  esac
+done
+rm -f $ac_rmfiles
+
+if { { ac_try="$ac_link_default"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link_default") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  # Autoconf-2.13 could set the ac_cv_exeext variable to `no'.
+# So ignore a value of `no', otherwise this would lead to `EXEEXT = no'
+# in a Makefile.  We should not override ac_cv_exeext if it was cached,
+# so that the user can short-circuit this test for compilers unknown to
+# Autoconf.
+for ac_file in $ac_files ''
+do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj )
+	;;
+    [ab].out )
+	# We found the default executable, but exeext='' is most
+	# certainly right.
+	break;;
+    *.* )
+	if test "${ac_cv_exeext+set}" = set && test "$ac_cv_exeext" != no;
+	then :; else
+	   ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	fi
+	# We set ac_cv_exeext here because the later test for it is not
+	# safe: cross compilers may not add the suffix if given an `-o'
+	# argument, so we may need to know it at that point already.
+	# Even if this section looks crufty: it has the advantage of
+	# actually working.
+	break;;
+    * )
+	break;;
+  esac
+done
+test "$ac_cv_exeext" = no && ac_cv_exeext=
+
+else
+  ac_file=''
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
+$as_echo "$ac_file" >&6; }
+if test -z "$ac_file"; then :
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+{ as_fn_set_status 77
+as_fn_error "C compiler cannot create executables
+See \`config.log' for more details." "$LINENO" 5; }; }
+fi
+ac_exeext=$ac_cv_exeext
+
+# Check that the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5
+$as_echo_n "checking whether the C compiler works... " >&6; }
+# If not cross compiling, check that we can run a simple program.
+if test "$cross_compiling" != yes; then
+  if { ac_try='./$ac_file'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+    cross_compiling=no
+  else
+    if test "$cross_compiling" = maybe; then
+	cross_compiling=yes
+    else
+	{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details." "$LINENO" 5; }
+    fi
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+
+rm -f -r a.out a.out.dSYM a.exe conftest$ac_cv_exeext b.out conftest.out
+ac_clean_files=$ac_clean_files_save
+# Check that the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5
+$as_echo_n "checking whether we are cross compiling... " >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
+$as_echo "$cross_compiling" >&6; }
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5
+$as_echo_n "checking for suffix of executables... " >&6; }
+if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	  break;;
+    * ) break;;
+  esac
+done
+else
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details." "$LINENO" 5; }
+fi
+rm -f conftest$ac_cv_exeext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
+$as_echo "$ac_cv_exeext" >&6; }
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
+$as_echo_n "checking for suffix of object files... " >&6; }
+if test "${ac_cv_objext+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  for ac_file in conftest.o conftest.obj conftest.*; do
+  test -f "$ac_file" || continue;
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM ) ;;
+    *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+       break;;
+  esac
+done
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." "$LINENO" 5; }
+fi
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
+$as_echo "$ac_cv_objext" >&6; }
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
+$as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
+if test "${ac_cv_c_compiler_gnu+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_compiler_gnu=yes
+else
+  ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+$as_echo "$ac_cv_c_compiler_gnu" >&6; }
+if test $ac_compiler_gnu = yes; then
+  GCC=yes
+else
+  GCC=
+fi
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+$as_echo_n "checking whether $CC accepts -g... " >&6; }
+if test "${ac_cv_prog_cc_g+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_save_c_werror_flag=$ac_c_werror_flag
+   ac_c_werror_flag=yes
+   ac_cv_prog_cc_g=no
+   CFLAGS="-g"
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+else
+  CFLAGS=""
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+else
+  ac_c_werror_flag=$ac_save_c_werror_flag
+	 CFLAGS="-g"
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+   ac_c_werror_flag=$ac_save_c_werror_flag
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+$as_echo "$ac_cv_prog_cc_g" >&6; }
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
+$as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
+if test "${ac_cv_prog_cc_c89+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_cv_prog_cc_c89=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not '\xHH' hex character constants.
+   These don't provoke an error unfortunately, instead are silently treated
+   as 'x'.  The following induces an error, until -std is added to get
+   proper ANSI mode.  Curiously '\x00'!='x' always comes out true, for an
+   array size at least.  It's necessary to write '\x00'==0 to get something
+   that's true only with -std.  */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
+   inside strings and character constants.  */
+#define FOO(x) 'x'
+int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
+  ;
+  return 0;
+}
+_ACEOF
+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
+	-Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_c89=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext
+  test "x$ac_cv_prog_cc_c89" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+
+fi
+# AC_CACHE_VAL
+case "x$ac_cv_prog_cc_c89" in
+  x)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+$as_echo "none needed" >&6; } ;;
+  xno)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+$as_echo "unsupported" >&6; } ;;
+  *)
+    CC="$CC $ac_cv_prog_cc_c89"
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+$as_echo "$ac_cv_prog_cc_c89" >&6; } ;;
+esac
+if test "x$ac_cv_prog_cc_c89" != xno; then :
+
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+# extra LD Flags which are required for targets
+
+
+
+case $host in
+  *-cygwin* | *-mingw*)
+    # 'host' will be top-level target in the case of a target lib,
+    # we must compare to with_cross_host to decide if this is a native
+    # or cross-compiler and select where to install dlls appropriately.
+    if test -n "$with_cross_host" &&
+	test x"$with_cross_host" != x"no"; then
+      lt_host_flags='-no-undefined -bindir "$(toolexeclibdir)"';
+    else
+      lt_host_flags='-no-undefined -bindir "$(bindir)"';
+    fi
+    ;;
+  *)
+    lt_host_flags=
+    ;;
+esac
+
+
+
+case "${host}" in
+  *-darwin*)
+    # Darwin needs -single_module when linking libobjc
+    extra_ldflags_libobjc='$(lt_host_flags) -Wl,-single_module'
+    ;;
+  *-cygwin*|*-mingw*)
+    # Tell libtool to build DLLs on Windows
+    extra_ldflags_libobjc='$(lt_host_flags)'
+    ;;
+esac
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}as", so it can be a program name with args.
+set dummy ${ac_tool_prefix}as; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_AS+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$AS"; then
+  ac_cv_prog_AS="$AS" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_AS="${ac_tool_prefix}as"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AS=$ac_cv_prog_AS
+if test -n "$AS"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AS" >&5
+$as_echo "$AS" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_AS"; then
+  ac_ct_AS=$AS
+  # Extract the first word of "as", so it can be a program name with args.
+set dummy as; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_AS+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_AS"; then
+  ac_cv_prog_ac_ct_AS="$ac_ct_AS" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_AS="as"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_AS=$ac_cv_prog_ac_ct_AS
+if test -n "$ac_ct_AS"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AS" >&5
+$as_echo "$ac_ct_AS" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_AS" = x; then
+    AS=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    AS=$ac_ct_AS
+  fi
+else
+  AS="$ac_cv_prog_AS"
+fi
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ar; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_AR+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$AR"; then
+  ac_cv_prog_AR="$AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_AR="${ac_tool_prefix}ar"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AR=$ac_cv_prog_AR
+if test -n "$AR"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AR" >&5
+$as_echo "$AR" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_AR"; then
+  ac_ct_AR=$AR
+  # Extract the first word of "ar", so it can be a program name with args.
+set dummy ar; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_AR+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_AR"; then
+  ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_AR="ar"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_AR=$ac_cv_prog_ac_ct_AR
+if test -n "$ac_ct_AR"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5
+$as_echo "$ac_ct_AR" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_AR" = x; then
+    AR=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    AR=$ac_ct_AR
+  fi
+else
+  AR="$ac_cv_prog_AR"
+fi
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_RANLIB+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$RANLIB"; then
+  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+RANLIB=$ac_cv_prog_RANLIB
+if test -n "$RANLIB"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5
+$as_echo "$RANLIB" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_RANLIB"; then
+  ac_ct_RANLIB=$RANLIB
+  # Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_RANLIB+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_RANLIB"; then
+  ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_RANLIB="ranlib"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
+if test -n "$ac_ct_RANLIB"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5
+$as_echo "$ac_ct_RANLIB" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_RANLIB" = x; then
+    RANLIB=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    RANLIB=$ac_ct_RANLIB
+  fi
+else
+  RANLIB="$ac_cv_prog_RANLIB"
+fi
+
+# Find a good install program.  We prefer a C program (faster),
+# so one script is as good as another.  But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AmigaOS /C/install, which installs bootblocks on floppy discs
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# OS/2's system install, which has a completely different semantic
+# ./install, which can be erroneously created by make from ./install.sh.
+# Reject install programs that cannot install multiple files.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
+$as_echo_n "checking for a BSD-compatible install... " >&6; }
+if test -z "$INSTALL"; then
+if test "${ac_cv_path_install+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    # Account for people who put trailing slashes in PATH elements.
+case $as_dir/ in #((
+  ./ | .// | /[cC]/* | \
+  /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
+  ?:[\\/]os2[\\/]install[\\/]* | ?:[\\/]OS2[\\/]INSTALL[\\/]* | \
+  /usr/ucb/* ) ;;
+  *)
+    # OSF1 and SCO ODT 3.0 have their own names for install.
+    # Don't use installbsd from OSF since it installs stuff as root
+    # by default.
+    for ac_prog in ginstall scoinst install; do
+      for ac_exec_ext in '' $ac_executable_extensions; do
+	if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; }; then
+	  if test $ac_prog = install &&
+	    grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # AIX install.  It has an incompatible calling convention.
+	    :
+	  elif test $ac_prog = install &&
+	    grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # program-specific install script used by HP pwplus--don't use.
+	    :
+	  else
+	    rm -rf conftest.one conftest.two conftest.dir
+	    echo one > conftest.one
+	    echo two > conftest.two
+	    mkdir conftest.dir
+	    if "$as_dir/$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir" &&
+	      test -s conftest.one && test -s conftest.two &&
+	      test -s conftest.dir/conftest.one &&
+	      test -s conftest.dir/conftest.two
+	    then
+	      ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c"
+	      break 3
+	    fi
+	  fi
+	fi
+      done
+    done
+    ;;
+esac
+
+  done
+IFS=$as_save_IFS
+
+rm -rf conftest.one conftest.two conftest.dir
+
+fi
+  if test "${ac_cv_path_install+set}" = set; then
+    INSTALL=$ac_cv_path_install
+  else
+    # As a last resort, use the slow shell script.  Don't cache a
+    # value for INSTALL within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the value is a relative name.
+    INSTALL=$ac_install_sh
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
+$as_echo "$INSTALL" >&6; }
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to enable maintainer-specific portions of Makefiles" >&5
+$as_echo_n "checking whether to enable maintainer-specific portions of Makefiles... " >&6; }
+    # Check whether --enable-maintainer-mode was given.
+if test "${enable_maintainer_mode+set}" = set; then :
+  enableval=$enable_maintainer_mode; USE_MAINTAINER_MODE=$enableval
+else
+  USE_MAINTAINER_MODE=no
+fi
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $USE_MAINTAINER_MODE" >&5
+$as_echo "$USE_MAINTAINER_MODE" >&6; }
+   if test $USE_MAINTAINER_MODE = yes; then
+  MAINTAINER_MODE_TRUE=
+  MAINTAINER_MODE_FALSE='#'
+else
+  MAINTAINER_MODE_TRUE='#'
+  MAINTAINER_MODE_FALSE=
+fi
+
+  MAINT=$MAINTAINER_MODE_TRUE
+
+
+
+# Enable Win32 DLL on MS Windows - FIXME
+enable_win32_dll=yes
+
+case $host in
+*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc*)
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}as", so it can be a program name with args.
+set dummy ${ac_tool_prefix}as; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_AS+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$AS"; then
+  ac_cv_prog_AS="$AS" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_AS="${ac_tool_prefix}as"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AS=$ac_cv_prog_AS
+if test -n "$AS"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AS" >&5
+$as_echo "$AS" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_AS"; then
+  ac_ct_AS=$AS
+  # Extract the first word of "as", so it can be a program name with args.
+set dummy as; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_AS+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_AS"; then
+  ac_cv_prog_ac_ct_AS="$ac_ct_AS" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_AS="as"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_AS=$ac_cv_prog_ac_ct_AS
+if test -n "$ac_ct_AS"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AS" >&5
+$as_echo "$ac_ct_AS" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_AS" = x; then
+    AS="false"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    AS=$ac_ct_AS
+  fi
+else
+  AS="$ac_cv_prog_AS"
+fi
+
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}dlltool", so it can be a program name with args.
+set dummy ${ac_tool_prefix}dlltool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_DLLTOOL+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$DLLTOOL"; then
+  ac_cv_prog_DLLTOOL="$DLLTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_DLLTOOL="${ac_tool_prefix}dlltool"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+DLLTOOL=$ac_cv_prog_DLLTOOL
+if test -n "$DLLTOOL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DLLTOOL" >&5
+$as_echo "$DLLTOOL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_DLLTOOL"; then
+  ac_ct_DLLTOOL=$DLLTOOL
+  # Extract the first word of "dlltool", so it can be a program name with args.
+set dummy dlltool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_DLLTOOL+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_DLLTOOL"; then
+  ac_cv_prog_ac_ct_DLLTOOL="$ac_ct_DLLTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_DLLTOOL="dlltool"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_DLLTOOL=$ac_cv_prog_ac_ct_DLLTOOL
+if test -n "$ac_ct_DLLTOOL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DLLTOOL" >&5
+$as_echo "$ac_ct_DLLTOOL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_DLLTOOL" = x; then
+    DLLTOOL="false"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    DLLTOOL=$ac_ct_DLLTOOL
+  fi
+else
+  DLLTOOL="$ac_cv_prog_DLLTOOL"
+fi
+
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}objdump", so it can be a program name with args.
+set dummy ${ac_tool_prefix}objdump; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_OBJDUMP+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$OBJDUMP"; then
+  ac_cv_prog_OBJDUMP="$OBJDUMP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_OBJDUMP="${ac_tool_prefix}objdump"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+OBJDUMP=$ac_cv_prog_OBJDUMP
+if test -n "$OBJDUMP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJDUMP" >&5
+$as_echo "$OBJDUMP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OBJDUMP"; then
+  ac_ct_OBJDUMP=$OBJDUMP
+  # Extract the first word of "objdump", so it can be a program name with args.
+set dummy objdump; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_OBJDUMP+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_OBJDUMP"; then
+  ac_cv_prog_ac_ct_OBJDUMP="$ac_ct_OBJDUMP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_OBJDUMP="objdump"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OBJDUMP=$ac_cv_prog_ac_ct_OBJDUMP
+if test -n "$ac_ct_OBJDUMP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OBJDUMP" >&5
+$as_echo "$ac_ct_OBJDUMP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_OBJDUMP" = x; then
+    OBJDUMP="false"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    OBJDUMP=$ac_ct_OBJDUMP
+  fi
+else
+  OBJDUMP="$ac_cv_prog_OBJDUMP"
+fi
+
+  ;;
+esac
+
+test -z "$AS" && AS=as
+
+
+
+
+
+test -z "$DLLTOOL" && DLLTOOL=dlltool
+
+
+
+
+
+test -z "$OBJDUMP" && OBJDUMP=objdump
+
+
+
+
+
+
+
+
+case `pwd` in
+  *\ * | *\	*)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Libtool does not cope well with whitespace in \`pwd\`" >&5
+$as_echo "$as_me: WARNING: Libtool does not cope well with whitespace in \`pwd\`" >&2;} ;;
+esac
+
+
+
+macro_version='2.2.7a'
+macro_revision='1.3134'
+
+
+
+
+
+
+
+
+
+
+
+
+
+ltmain="$ac_aux_dir/ltmain.sh"
+
+# Backslashify metacharacters that are still active within
+# double-quoted strings.
+sed_quote_subst='s/\(["`$\\]\)/\\\1/g'
+
+# Same as above, but do not quote variable references.
+double_quote_subst='s/\(["`\\]\)/\\\1/g'
+
+# Sed substitution to delay expansion of an escaped shell variable in a
+# double_quote_subst'ed string.
+delay_variable_subst='s/\\\\\\\\\\\$/\\\\\\$/g'
+
+# Sed substitution to delay expansion of an escaped single quote.
+delay_single_quote_subst='s/'\''/'\'\\\\\\\'\''/g'
+
+# Sed substitution to avoid accidental globbing in evaled expressions
+no_glob_subst='s/\*/\\\*/g'
+
+ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO
+ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO$ECHO
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to print strings" >&5
+$as_echo_n "checking how to print strings... " >&6; }
+# Test print first, because it will be a builtin if present.
+if test "X`print -r -- -n 2>/dev/null`" = X-n && \
+   test "X`print -r -- $ECHO 2>/dev/null`" = "X$ECHO"; then
+  ECHO='print -r --'
+elif test "X`printf %s $ECHO 2>/dev/null`" = "X$ECHO"; then
+  ECHO='printf %s\n'
+else
+  # Use this function as a fallback that always works.
+  func_fallback_echo ()
+  {
+    eval 'cat <<_LTECHO_EOF
+$1
+_LTECHO_EOF'
+  }
+  ECHO='func_fallback_echo'
+fi
+
+# func_echo_all arg...
+# Invoke $ECHO with all args, space-separated.
+func_echo_all ()
+{
+    $ECHO ""
+}
+
+case "$ECHO" in
+  printf*) { $as_echo "$as_me:${as_lineno-$LINENO}: result: printf" >&5
+$as_echo "printf" >&6; } ;;
+  print*) { $as_echo "$as_me:${as_lineno-$LINENO}: result: print -r" >&5
+$as_echo "print -r" >&6; } ;;
+  *) { $as_echo "$as_me:${as_lineno-$LINENO}: result: cat" >&5
+$as_echo "cat" >&6; } ;;
+esac
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a sed that does not truncate output" >&5
+$as_echo_n "checking for a sed that does not truncate output... " >&6; }
+if test "${ac_cv_path_SED+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+            ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/
+     for ac_i in 1 2 3 4 5 6 7; do
+       ac_script="$ac_script$as_nl$ac_script"
+     done
+     echo "$ac_script" 2>/dev/null | sed 99q >conftest.sed
+     { ac_script=; unset ac_script;}
+     if test -z "$SED"; then
+  ac_path_SED_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in sed gsed; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_SED="$as_dir/$ac_prog$ac_exec_ext"
+      { test -f "$ac_path_SED" && $as_test_x "$ac_path_SED"; } || continue
+# Check for GNU ac_path_SED and select it if it is found.
+  # Check for GNU $ac_path_SED
+case `"$ac_path_SED" --version 2>&1` in
+*GNU*)
+  ac_cv_path_SED="$ac_path_SED" ac_path_SED_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo '' >> "conftest.nl"
+    "$ac_path_SED" -f conftest.sed < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_SED_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_SED="$ac_path_SED"
+      ac_path_SED_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_SED_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_SED"; then
+    as_fn_error "no acceptable sed could be found in \$PATH" "$LINENO" 5
+  fi
+else
+  ac_cv_path_SED=$SED
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_SED" >&5
+$as_echo "$ac_cv_path_SED" >&6; }
+ SED="$ac_cv_path_SED"
+  rm -f conftest.sed
+
+test -z "$SED" && SED=sed
+Xsed="$SED -e 1s/^X//"
+
+
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
+$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
+if test "${ac_cv_path_GREP+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -z "$GREP"; then
+  ac_path_GREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in grep ggrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
+      { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
+# Check for GNU ac_path_GREP and select it if it is found.
+  # Check for GNU $ac_path_GREP
+case `"$ac_path_GREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'GREP' >> "conftest.nl"
+    "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_GREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_GREP="$ac_path_GREP"
+      ac_path_GREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_GREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_GREP"; then
+    as_fn_error "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_GREP=$GREP
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
+$as_echo "$ac_cv_path_GREP" >&6; }
+ GREP="$ac_cv_path_GREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
+$as_echo_n "checking for egrep... " >&6; }
+if test "${ac_cv_path_EGREP+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
+   then ac_cv_path_EGREP="$GREP -E"
+   else
+     if test -z "$EGREP"; then
+  ac_path_EGREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in egrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
+      { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
+# Check for GNU ac_path_EGREP and select it if it is found.
+  # Check for GNU $ac_path_EGREP
+case `"$ac_path_EGREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'EGREP' >> "conftest.nl"
+    "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_EGREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_EGREP="$ac_path_EGREP"
+      ac_path_EGREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_EGREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_EGREP"; then
+    as_fn_error "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_EGREP=$EGREP
+fi
+
+   fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
+$as_echo "$ac_cv_path_EGREP" >&6; }
+ EGREP="$ac_cv_path_EGREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for fgrep" >&5
+$as_echo_n "checking for fgrep... " >&6; }
+if test "${ac_cv_path_FGREP+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if echo 'ab*c' | $GREP -F 'ab*c' >/dev/null 2>&1
+   then ac_cv_path_FGREP="$GREP -F"
+   else
+     if test -z "$FGREP"; then
+  ac_path_FGREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in fgrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_FGREP="$as_dir/$ac_prog$ac_exec_ext"
+      { test -f "$ac_path_FGREP" && $as_test_x "$ac_path_FGREP"; } || continue
+# Check for GNU ac_path_FGREP and select it if it is found.
+  # Check for GNU $ac_path_FGREP
+case `"$ac_path_FGREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_FGREP="$ac_path_FGREP" ac_path_FGREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'FGREP' >> "conftest.nl"
+    "$ac_path_FGREP" FGREP < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_FGREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_FGREP="$ac_path_FGREP"
+      ac_path_FGREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_FGREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_FGREP"; then
+    as_fn_error "no acceptable fgrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_FGREP=$FGREP
+fi
+
+   fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_FGREP" >&5
+$as_echo "$ac_cv_path_FGREP" >&6; }
+ FGREP="$ac_cv_path_FGREP"
+
+
+test -z "$GREP" && GREP=grep
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# Check whether --with-gnu-ld was given.
+if test "${with_gnu_ld+set}" = set; then :
+  withval=$with_gnu_ld; test "$withval" = no || with_gnu_ld=yes
+else
+  with_gnu_ld=no
+fi
+
+ac_prog=ld
+if test "$GCC" = yes; then
+  # Check if gcc -print-prog-name=ld gives a path.
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ld used by $CC" >&5
+$as_echo_n "checking for ld used by $CC... " >&6; }
+  case $host in
+  *-*-mingw*)
+    # gcc leaves a trailing carriage return which upsets mingw
+    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+  *)
+    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+  esac
+  case $ac_prog in
+    # Accept absolute paths.
+    [\\/]* | ?:[\\/]*)
+      re_direlt='/[^/][^/]*/\.\./'
+      # Canonicalize the pathname of ld
+      ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'`
+      while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do
+	ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"`
+      done
+      test -z "$LD" && LD="$ac_prog"
+      ;;
+  "")
+    # If it fails, then pretend we aren't using GCC.
+    ac_prog=ld
+    ;;
+  *)
+    # If it is relative, then search for the first ld in PATH.
+    with_gnu_ld=unknown
+    ;;
+  esac
+elif test "$with_gnu_ld" = yes; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU ld" >&5
+$as_echo_n "checking for GNU ld... " >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for non-GNU ld" >&5
+$as_echo_n "checking for non-GNU ld... " >&6; }
+fi
+if test "${lt_cv_path_LD+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -z "$LD"; then
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  for ac_dir in $PATH; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+      lt_cv_path_LD="$ac_dir/$ac_prog"
+      # Check to see if the program is GNU ld.  I'd rather use --version,
+      # but apparently some variants of GNU ld only accept -v.
+      # Break only if it was the GNU/non-GNU ld that we prefer.
+      case `"$lt_cv_path_LD" -v 2>&1 </dev/null` in
+      *GNU* | *'with BFD'*)
+	test "$with_gnu_ld" != no && break
+	;;
+      *)
+	test "$with_gnu_ld" != yes && break
+	;;
+      esac
+    fi
+  done
+  IFS="$lt_save_ifs"
+else
+  lt_cv_path_LD="$LD" # Let the user override the test with a path.
+fi
+fi
+
+LD="$lt_cv_path_LD"
+if test -n "$LD"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LD" >&5
+$as_echo "$LD" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+test -z "$LD" && as_fn_error "no acceptable ld found in \$PATH" "$LINENO" 5
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the linker ($LD) is GNU ld" >&5
+$as_echo_n "checking if the linker ($LD) is GNU ld... " >&6; }
+if test "${lt_cv_prog_gnu_ld+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  # I'd rather use --version here, but apparently some GNU lds only accept -v.
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+  lt_cv_prog_gnu_ld=yes
+  ;;
+*)
+  lt_cv_prog_gnu_ld=no
+  ;;
+esac
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_gnu_ld" >&5
+$as_echo "$lt_cv_prog_gnu_ld" >&6; }
+with_gnu_ld=$lt_cv_prog_gnu_ld
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for BSD- or MS-compatible name lister (nm)" >&5
+$as_echo_n "checking for BSD- or MS-compatible name lister (nm)... " >&6; }
+if test "${lt_cv_path_NM+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$NM"; then
+  # Let the user override the test.
+  lt_cv_path_NM="$NM"
+else
+  lt_nm_to_check="${ac_tool_prefix}nm"
+  if test -n "$ac_tool_prefix" && test "$build" = "$host"; then
+    lt_nm_to_check="$lt_nm_to_check nm"
+  fi
+  for lt_tmp_nm in $lt_nm_to_check; do
+    lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+    for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do
+      IFS="$lt_save_ifs"
+      test -z "$ac_dir" && ac_dir=.
+      tmp_nm="$ac_dir/$lt_tmp_nm"
+      if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext" ; then
+	# Check to see if the nm accepts a BSD-compat flag.
+	# Adding the `sed 1q' prevents false positives on HP-UX, which says:
+	#   nm: unknown option "B" ignored
+	# Tru64's nm complains that /dev/null is an invalid object file
+	case `"$tmp_nm" -B /dev/null 2>&1 | sed '1q'` in
+	*/dev/null* | *'Invalid file or object type'*)
+	  lt_cv_path_NM="$tmp_nm -B"
+	  break
+	  ;;
+	*)
+	  case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in
+	  */dev/null*)
+	    lt_cv_path_NM="$tmp_nm -p"
+	    break
+	    ;;
+	  *)
+	    lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but
+	    continue # so that we can try to find one that supports BSD flags
+	    ;;
+	  esac
+	  ;;
+	esac
+      fi
+    done
+    IFS="$lt_save_ifs"
+  done
+  : ${lt_cv_path_NM=no}
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_path_NM" >&5
+$as_echo "$lt_cv_path_NM" >&6; }
+if test "$lt_cv_path_NM" != "no"; then
+  NM="$lt_cv_path_NM"
+else
+  # Didn't find any BSD compatible name lister, look for dumpbin.
+  if test -n "$DUMPBIN"; then :
+    # Let the user override the test.
+  else
+    if test -n "$ac_tool_prefix"; then
+  for ac_prog in dumpbin "link -dump"
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_DUMPBIN+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$DUMPBIN"; then
+  ac_cv_prog_DUMPBIN="$DUMPBIN" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_DUMPBIN="$ac_tool_prefix$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+DUMPBIN=$ac_cv_prog_DUMPBIN
+if test -n "$DUMPBIN"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DUMPBIN" >&5
+$as_echo "$DUMPBIN" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    test -n "$DUMPBIN" && break
+  done
+fi
+if test -z "$DUMPBIN"; then
+  ac_ct_DUMPBIN=$DUMPBIN
+  for ac_prog in dumpbin "link -dump"
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_DUMPBIN+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_DUMPBIN"; then
+  ac_cv_prog_ac_ct_DUMPBIN="$ac_ct_DUMPBIN" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_DUMPBIN="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_DUMPBIN=$ac_cv_prog_ac_ct_DUMPBIN
+if test -n "$ac_ct_DUMPBIN"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DUMPBIN" >&5
+$as_echo "$ac_ct_DUMPBIN" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_DUMPBIN" && break
+done
+
+  if test "x$ac_ct_DUMPBIN" = x; then
+    DUMPBIN=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    DUMPBIN=$ac_ct_DUMPBIN
+  fi
+fi
+
+    case `$DUMPBIN -symbols /dev/null 2>&1 | sed '1q'` in
+    *COFF*)
+      DUMPBIN="$DUMPBIN -symbols"
+      ;;
+    *)
+      DUMPBIN=:
+      ;;
+    esac
+  fi
+
+  if test "$DUMPBIN" != ":"; then
+    NM="$DUMPBIN"
+  fi
+fi
+test -z "$NM" && NM=nm
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the name lister ($NM) interface" >&5
+$as_echo_n "checking the name lister ($NM) interface... " >&6; }
+if test "${lt_cv_nm_interface+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_nm_interface="BSD nm"
+  echo "int some_variable = 0;" > conftest.$ac_ext
+  (eval echo "\"\$as_me:$LINENO: $ac_compile\"" >&5)
+  (eval "$ac_compile" 2>conftest.err)
+  cat conftest.err >&5
+  (eval echo "\"\$as_me:$LINENO: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
+  (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
+  cat conftest.err >&5
+  (eval echo "\"\$as_me:$LINENO: output\"" >&5)
+  cat conftest.out >&5
+  if $GREP 'External.*some_variable' conftest.out > /dev/null; then
+    lt_cv_nm_interface="MS dumpbin"
+  fi
+  rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_nm_interface" >&5
+$as_echo "$lt_cv_nm_interface" >&6; }
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ln -s works" >&5
+$as_echo_n "checking whether ln -s works... " >&6; }
+LN_S=$as_ln_s
+if test "$LN_S" = "ln -s"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no, using $LN_S" >&5
+$as_echo "no, using $LN_S" >&6; }
+fi
+
+# find the maximum length of command line arguments
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the maximum length of command line arguments" >&5
+$as_echo_n "checking the maximum length of command line arguments... " >&6; }
+if test "${lt_cv_sys_max_cmd_len+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+    i=0
+  teststring="ABCD"
+
+  case $build_os in
+  msdosdjgpp*)
+    # On DJGPP, this test can blow up pretty badly due to problems in libc
+    # (any single argument exceeding 2000 bytes causes a buffer overrun
+    # during glob expansion).  Even if it were fixed, the result of this
+    # check would be larger than it should be.
+    lt_cv_sys_max_cmd_len=12288;    # 12K is about right
+    ;;
+
+  gnu*)
+    # Under GNU Hurd, this test is not required because there is
+    # no limit to the length of command line arguments.
+    # Libtool will interpret -1 as no limit whatsoever
+    lt_cv_sys_max_cmd_len=-1;
+    ;;
+
+  cygwin* | mingw* | cegcc*)
+    # On Win9x/ME, this test blows up -- it succeeds, but takes
+    # about 5 minutes as the teststring grows exponentially.
+    # Worse, since 9x/ME are not pre-emptively multitasking,
+    # you end up with a "frozen" computer, even though with patience
+    # the test eventually succeeds (with a max line length of 256k).
+    # Instead, let's just punt: use the minimum linelength reported by
+    # all of the supported platforms: 8192 (on NT/2K/XP).
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  mint*)
+    # On MiNT this can take a long time and run out of memory.
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  amigaos*)
+    # On AmigaOS with pdksh, this test takes hours, literally.
+    # So we just punt and use a minimum line length of 8192.
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
+    # This has been around since 386BSD, at least.  Likely further.
+    if test -x /sbin/sysctl; then
+      lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
+    elif test -x /usr/sbin/sysctl; then
+      lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax`
+    else
+      lt_cv_sys_max_cmd_len=65536	# usable default for all BSDs
+    fi
+    # And add a safety zone
+    lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+    lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+    ;;
+
+  interix*)
+    # We know the value 262144 and hardcode it with a safety zone (like BSD)
+    lt_cv_sys_max_cmd_len=196608
+    ;;
+
+  osf*)
+    # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure
+    # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not
+    # nice to cause kernel panics so lets avoid the loop below.
+    # First set a reasonable default.
+    lt_cv_sys_max_cmd_len=16384
+    #
+    if test -x /sbin/sysconfig; then
+      case `/sbin/sysconfig -q proc exec_disable_arg_limit` in
+        *1*) lt_cv_sys_max_cmd_len=-1 ;;
+      esac
+    fi
+    ;;
+  sco3.2v5*)
+    lt_cv_sys_max_cmd_len=102400
+    ;;
+  sysv5* | sco5v6* | sysv4.2uw2*)
+    kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null`
+    if test -n "$kargmax"; then
+      lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[	 ]//'`
+    else
+      lt_cv_sys_max_cmd_len=32768
+    fi
+    ;;
+  *)
+    lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null`
+    if test -n "$lt_cv_sys_max_cmd_len"; then
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+    else
+      # Make teststring a little bigger before we do anything with it.
+      # a 1K string should be a reasonable start.
+      for i in 1 2 3 4 5 6 7 8 ; do
+        teststring=$teststring$teststring
+      done
+      SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}}
+      # If test is not a shell built-in, we'll probably end up computing a
+      # maximum length that is only half of the actual maximum length, but
+      # we can't tell.
+      while { test "X"`func_fallback_echo "$teststring$teststring" 2>/dev/null` \
+	         = "X$teststring$teststring"; } >/dev/null 2>&1 &&
+	      test $i != 17 # 1/2 MB should be enough
+      do
+        i=`expr $i + 1`
+        teststring=$teststring$teststring
+      done
+      # Only check the string length outside the loop.
+      lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1`
+      teststring=
+      # Add a significant safety factor because C++ compilers can tack on
+      # massive amounts of additional arguments before passing them to the
+      # linker.  It appears as though 1/2 is a usable value.
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2`
+    fi
+    ;;
+  esac
+
+fi
+
+if test -n $lt_cv_sys_max_cmd_len ; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sys_max_cmd_len" >&5
+$as_echo "$lt_cv_sys_max_cmd_len" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: none" >&5
+$as_echo "none" >&6; }
+fi
+max_cmd_len=$lt_cv_sys_max_cmd_len
+
+
+
+
+
+
+: ${CP="cp -f"}
+: ${MV="mv -f"}
+: ${RM="rm -f"}
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the shell understands some XSI constructs" >&5
+$as_echo_n "checking whether the shell understands some XSI constructs... " >&6; }
+# Try some XSI features
+xsi_shell=no
+( _lt_dummy="a/b/c"
+  test "${_lt_dummy##*/},${_lt_dummy%/*},"${_lt_dummy%"$_lt_dummy"}, \
+      = c,a/b,, \
+    && eval 'test $(( 1 + 1 )) -eq 2 \
+    && test "${#_lt_dummy}" -eq 5' ) >/dev/null 2>&1 \
+  && xsi_shell=yes
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $xsi_shell" >&5
+$as_echo "$xsi_shell" >&6; }
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the shell understands \"+=\"" >&5
+$as_echo_n "checking whether the shell understands \"+=\"... " >&6; }
+lt_shell_append=no
+( foo=bar; set foo baz; eval "$1+=\$2" && test "$foo" = barbaz ) \
+    >/dev/null 2>&1 \
+  && lt_shell_append=yes
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_shell_append" >&5
+$as_echo "$lt_shell_append" >&6; }
+
+
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+  lt_unset=unset
+else
+  lt_unset=false
+fi
+
+
+
+
+
+# test EBCDIC or ASCII
+case `echo X|tr X '\101'` in
+ A) # ASCII based system
+    # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr
+  lt_SP2NL='tr \040 \012'
+  lt_NL2SP='tr \015\012 \040\040'
+  ;;
+ *) # EBCDIC based system
+  lt_SP2NL='tr \100 \n'
+  lt_NL2SP='tr \r\n \100\100'
+  ;;
+esac
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $LD option to reload object files" >&5
+$as_echo_n "checking for $LD option to reload object files... " >&6; }
+if test "${lt_cv_ld_reload_flag+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_ld_reload_flag='-r'
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_reload_flag" >&5
+$as_echo "$lt_cv_ld_reload_flag" >&6; }
+reload_flag=$lt_cv_ld_reload_flag
+case $reload_flag in
+"" | " "*) ;;
+*) reload_flag=" $reload_flag" ;;
+esac
+reload_cmds='$LD$reload_flag -o $output$reload_objs'
+case $host_os in
+  darwin*)
+    if test "$GCC" = yes; then
+      reload_cmds='$LTCC $LTCFLAGS -nostdlib ${wl}-r -o $output$reload_objs'
+    else
+      reload_cmds='$LD$reload_flag -o $output$reload_objs'
+    fi
+    ;;
+esac
+
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}objdump", so it can be a program name with args.
+set dummy ${ac_tool_prefix}objdump; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_OBJDUMP+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$OBJDUMP"; then
+  ac_cv_prog_OBJDUMP="$OBJDUMP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_OBJDUMP="${ac_tool_prefix}objdump"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+OBJDUMP=$ac_cv_prog_OBJDUMP
+if test -n "$OBJDUMP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJDUMP" >&5
+$as_echo "$OBJDUMP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OBJDUMP"; then
+  ac_ct_OBJDUMP=$OBJDUMP
+  # Extract the first word of "objdump", so it can be a program name with args.
+set dummy objdump; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_OBJDUMP+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_OBJDUMP"; then
+  ac_cv_prog_ac_ct_OBJDUMP="$ac_ct_OBJDUMP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_OBJDUMP="objdump"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OBJDUMP=$ac_cv_prog_ac_ct_OBJDUMP
+if test -n "$ac_ct_OBJDUMP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OBJDUMP" >&5
+$as_echo "$ac_ct_OBJDUMP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_OBJDUMP" = x; then
+    OBJDUMP="false"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    OBJDUMP=$ac_ct_OBJDUMP
+  fi
+else
+  OBJDUMP="$ac_cv_prog_OBJDUMP"
+fi
+
+test -z "$OBJDUMP" && OBJDUMP=objdump
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to recognize dependent libraries" >&5
+$as_echo_n "checking how to recognize dependent libraries... " >&6; }
+if test "${lt_cv_deplibs_check_method+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_file_magic_cmd='$MAGIC_CMD'
+lt_cv_file_magic_test_file=
+lt_cv_deplibs_check_method='unknown'
+# Need to set the preceding variable on all platforms that support
+# interlibrary dependencies.
+# 'none' -- dependencies not supported.
+# `unknown' -- same as none, but documents that we really don't know.
+# 'pass_all' -- all dependencies passed with no checks.
+# 'test_compile' -- check by making test program.
+# 'file_magic [[regex]]' -- check by looking for files in library path
+# which responds to the $file_magic_cmd with a given extended regex.
+# If you have `file' or equivalent on your system and you're not sure
+# whether `pass_all' will *always* work, you probably want this one.
+
+case $host_os in
+aix[4-9]*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+beos*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+bsdi[45]*)
+  lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib)'
+  lt_cv_file_magic_cmd='/usr/bin/file -L'
+  lt_cv_file_magic_test_file=/shlib/libc.so
+  ;;
+
+cygwin*)
+  # func_win32_libid is a shell function defined in ltmain.sh
+  lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+  lt_cv_file_magic_cmd='func_win32_libid'
+  ;;
+
+mingw* | pw32*)
+  # Base MSYS/MinGW do not provide the 'file' command needed by
+  # func_win32_libid shell function, so use a weaker test based on 'objdump',
+  # unless we find 'file', for example because we are cross-compiling.
+  # func_win32_libid assumes BSD nm, so disallow it if using MS dumpbin.
+  if ( test "$lt_cv_nm_interface" = "BSD nm" && file / ) >/dev/null 2>&1; then
+    lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+    lt_cv_file_magic_cmd='func_win32_libid'
+  else
+    lt_cv_deplibs_check_method='file_magic file format pei*-i386(.*architecture: i386)?'
+    lt_cv_file_magic_cmd='$OBJDUMP -f'
+  fi
+  ;;
+
+cegcc*)
+  # use the weaker test based on 'objdump'. See mingw*.
+  lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?'
+  lt_cv_file_magic_cmd='$OBJDUMP -f'
+  ;;
+
+darwin* | rhapsody*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+freebsd* | dragonfly*)
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+    case $host_cpu in
+    i*86 )
+      # Not sure whether the presence of OpenBSD here was a mistake.
+      # Let's accept both of them until this is cleared up.
+      lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[3-9]86 (compact )?demand paged shared library'
+      lt_cv_file_magic_cmd=/usr/bin/file
+      lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
+      ;;
+    esac
+  else
+    lt_cv_deplibs_check_method=pass_all
+  fi
+  ;;
+
+gnu*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+haiku*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+hpux10.20* | hpux11*)
+  lt_cv_file_magic_cmd=/usr/bin/file
+  case $host_cpu in
+  ia64*)
+    lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF-[0-9][0-9]) shared object file - IA64'
+    lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so
+    ;;
+  hppa*64*)
+    lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF[ -][0-9][0-9])(-bit)?( [LM]SB)? shared object( file)?[, -]* PA-RISC [0-9]\.[0-9]'
+    lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl
+    ;;
+  *)
+    lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|PA-RISC[0-9]\.[0-9]) shared library'
+    lt_cv_file_magic_test_file=/usr/lib/libc.sl
+    ;;
+  esac
+  ;;
+
+interix[3-9]*)
+  # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here
+  lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|\.a)$'
+  ;;
+
+irix5* | irix6* | nonstopux*)
+  case $LD in
+  *-32|*"-32 ") libmagic=32-bit;;
+  *-n32|*"-n32 ") libmagic=N32;;
+  *-64|*"-64 ") libmagic=64-bit;;
+  *) libmagic=never-match;;
+  esac
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+# This must be Linux ELF.
+linux* | k*bsd*-gnu | kopensolaris*-gnu)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+netbsd*)
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+    lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$'
+  else
+    lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|_pic\.a)$'
+  fi
+  ;;
+
+newos6*)
+  lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (executable|dynamic lib)'
+  lt_cv_file_magic_cmd=/usr/bin/file
+  lt_cv_file_magic_test_file=/usr/lib/libnls.so
+  ;;
+
+*nto* | *qnx*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+openbsd*)
+  if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+    lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|\.so|_pic\.a)$'
+  else
+    lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$'
+  fi
+  ;;
+
+osf3* | osf4* | osf5*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+rdos*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+solaris*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+sysv4 | sysv4.3*)
+  case $host_vendor in
+  motorola)
+    lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib) M[0-9][0-9]* Version [0-9]'
+    lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*`
+    ;;
+  ncr)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  sequent)
+    lt_cv_file_magic_cmd='/bin/file'
+    lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [LM]SB (shared object|dynamic lib )'
+    ;;
+  sni)
+    lt_cv_file_magic_cmd='/bin/file'
+    lt_cv_deplibs_check_method="file_magic ELF [0-9][0-9]*-bit [LM]SB dynamic lib"
+    lt_cv_file_magic_test_file=/lib/libc.so
+    ;;
+  siemens)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  pc)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  esac
+  ;;
+
+tpf*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+esac
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_deplibs_check_method" >&5
+$as_echo "$lt_cv_deplibs_check_method" >&6; }
+file_magic_cmd=$lt_cv_file_magic_cmd
+deplibs_check_method=$lt_cv_deplibs_check_method
+test -z "$deplibs_check_method" && deplibs_check_method=unknown
+
+
+
+
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ar; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_AR+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$AR"; then
+  ac_cv_prog_AR="$AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_AR="${ac_tool_prefix}ar"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AR=$ac_cv_prog_AR
+if test -n "$AR"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AR" >&5
+$as_echo "$AR" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_AR"; then
+  ac_ct_AR=$AR
+  # Extract the first word of "ar", so it can be a program name with args.
+set dummy ar; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_AR+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_AR"; then
+  ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_AR="ar"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_AR=$ac_cv_prog_ac_ct_AR
+if test -n "$ac_ct_AR"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5
+$as_echo "$ac_ct_AR" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_AR" = x; then
+    AR="false"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    AR=$ac_ct_AR
+  fi
+else
+  AR="$ac_cv_prog_AR"
+fi
+
+test -z "$AR" && AR=ar
+test -z "$AR_FLAGS" && AR_FLAGS=cru
+
+
+
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
+set dummy ${ac_tool_prefix}strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_STRIP+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$STRIP"; then
+  ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_STRIP="${ac_tool_prefix}strip"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+STRIP=$ac_cv_prog_STRIP
+if test -n "$STRIP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5
+$as_echo "$STRIP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_STRIP"; then
+  ac_ct_STRIP=$STRIP
+  # Extract the first word of "strip", so it can be a program name with args.
+set dummy strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_STRIP+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_STRIP"; then
+  ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_STRIP="strip"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP
+if test -n "$ac_ct_STRIP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5
+$as_echo "$ac_ct_STRIP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_STRIP" = x; then
+    STRIP=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    STRIP=$ac_ct_STRIP
+  fi
+else
+  STRIP="$ac_cv_prog_STRIP"
+fi
+
+test -z "$STRIP" && STRIP=:
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_RANLIB+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$RANLIB"; then
+  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+RANLIB=$ac_cv_prog_RANLIB
+if test -n "$RANLIB"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5
+$as_echo "$RANLIB" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_RANLIB"; then
+  ac_ct_RANLIB=$RANLIB
+  # Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_RANLIB+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_RANLIB"; then
+  ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_RANLIB="ranlib"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
+if test -n "$ac_ct_RANLIB"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5
+$as_echo "$ac_ct_RANLIB" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_RANLIB" = x; then
+    RANLIB=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    RANLIB=$ac_ct_RANLIB
+  fi
+else
+  RANLIB="$ac_cv_prog_RANLIB"
+fi
+
+test -z "$RANLIB" && RANLIB=:
+
+
+
+
+
+
+# Determine commands to create old-style static archives.
+old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs'
+old_postinstall_cmds='chmod 644 $oldlib'
+old_postuninstall_cmds=
+
+if test -n "$RANLIB"; then
+  case $host_os in
+  openbsd*)
+    old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$oldlib"
+    ;;
+  *)
+    old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$oldlib"
+    ;;
+  esac
+  old_archive_cmds="$old_archive_cmds~\$RANLIB \$oldlib"
+fi
+
+case $host_os in
+  darwin*)
+    lock_old_archive_extraction=yes ;;
+  *)
+    lock_old_archive_extraction=no ;;
+esac
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_prog in gawk mawk nawk awk
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_AWK+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$AWK"; then
+  ac_cv_prog_AWK="$AWK" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_AWK="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AWK=$ac_cv_prog_AWK
+if test -n "$AWK"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AWK" >&5
+$as_echo "$AWK" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$AWK" && break
+done
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+
+
+# Check for command to grab the raw symbol name followed by C symbol from nm.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking command to parse $NM output from $compiler object" >&5
+$as_echo_n "checking command to parse $NM output from $compiler object... " >&6; }
+if test "${lt_cv_sys_global_symbol_pipe+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+
+# These are sane defaults that work on at least a few old systems.
+# [They come from Ultrix.  What could be older than Ultrix?!! ;)]
+
+# Character class describing NM global symbol codes.
+symcode='[BCDEGRST]'
+
+# Regexp to match symbols that can be accessed directly from C.
+sympat='\([_A-Za-z][_A-Za-z0-9]*\)'
+
+# Define system-specific variables.
+case $host_os in
+aix*)
+  symcode='[BCDT]'
+  ;;
+cygwin* | mingw* | pw32* | cegcc*)
+  symcode='[ABCDGISTW]'
+  ;;
+hpux*)
+  if test "$host_cpu" = ia64; then
+    symcode='[ABCDEGRST]'
+  fi
+  ;;
+irix* | nonstopux*)
+  symcode='[BCDEGRST]'
+  ;;
+osf*)
+  symcode='[BCDEGQRST]'
+  ;;
+solaris*)
+  symcode='[BDRT]'
+  ;;
+sco3.2v5*)
+  symcode='[DT]'
+  ;;
+sysv4.2uw2*)
+  symcode='[DT]'
+  ;;
+sysv5* | sco5v6* | unixware* | OpenUNIX*)
+  symcode='[ABDT]'
+  ;;
+sysv4)
+  symcode='[DFNSTU]'
+  ;;
+esac
+
+# If we're using GNU nm, then use its standard symbol codes.
+case `$NM -V 2>&1` in
+*GNU* | *'with BFD'*)
+  symcode='[ABCDGIRSTW]' ;;
+esac
+
+# Transform an extracted symbol line into a proper C declaration.
+# Some systems (esp. on ia64) link data and code symbols differently,
+# so use this general approach.
+lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'"
+
+# Transform an extracted symbol line into symbol name and symbol address
+lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([^ ]*\) $/  {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/  {\"\2\", (void *) \&\2},/p'"
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([^ ]*\) $/  {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \(lib[^ ]*\)$/  {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/  {\"lib\2\", (void *) \&\2},/p'"
+
+# Handle CRLF in mingw tool chain
+opt_cr=
+case $build_os in
+mingw*)
+  opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp
+  ;;
+esac
+
+# Try without a prefix underscore, then with it.
+for ac_symprfx in "" "_"; do
+
+  # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol.
+  symxfrm="\\1 $ac_symprfx\\2 \\2"
+
+  # Write the raw and C identifiers.
+  if test "$lt_cv_nm_interface" = "MS dumpbin"; then
+    # Fake it for dumpbin and say T for any non-static function
+    # and D for any global variable.
+    # Also find C++ and __fastcall symbols from MSVC++,
+    # which start with @ or ?.
+    lt_cv_sys_global_symbol_pipe="$AWK '"\
+"     {last_section=section; section=\$ 3};"\
+"     /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\
+"     \$ 0!~/External *\|/{next};"\
+"     / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\
+"     {if(hide[section]) next};"\
+"     {f=0}; \$ 0~/\(\).*\|/{f=1}; {printf f ? \"T \" : \"D \"};"\
+"     {split(\$ 0, a, /\||\r/); split(a[2], s)};"\
+"     s[1]~/^[@?]/{print s[1], s[1]; next};"\
+"     s[1]~prfx {split(s[1],t,\"@\"); print t[1], substr(t[1],length(prfx))}"\
+"     ' prfx=^$ac_symprfx"
+  else
+    lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[	 ]\($symcode$symcode*\)[	 ][	 ]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
+  fi
+
+  # Check to see that the pipe works correctly.
+  pipe_works=no
+
+  rm -f conftest*
+  cat > conftest.$ac_ext <<_LT_EOF
+#ifdef __cplusplus
+extern "C" {
+#endif
+char nm_test_var;
+void nm_test_func(void);
+void nm_test_func(void){}
+#ifdef __cplusplus
+}
+#endif
+int main(){nm_test_var='a';nm_test_func();return(0);}
+_LT_EOF
+
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    # Now try to grab the symbols.
+    nlist=conftest.nm
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist\""; } >&5
+  (eval $NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s "$nlist"; then
+      # Try sorting and uniquifying the output.
+      if sort "$nlist" | uniq > "$nlist"T; then
+	mv -f "$nlist"T "$nlist"
+      else
+	rm -f "$nlist"T
+      fi
+
+      # Make sure that we snagged all the symbols we need.
+      if $GREP ' nm_test_var$' "$nlist" >/dev/null; then
+	if $GREP ' nm_test_func$' "$nlist" >/dev/null; then
+	  cat <<_LT_EOF > conftest.$ac_ext
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+_LT_EOF
+	  # Now generate the symbol file.
+	  eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext'
+
+	  cat <<_LT_EOF >> conftest.$ac_ext
+
+/* The mapping between symbol names and symbols.  */
+const struct {
+  const char *name;
+  void       *address;
+}
+lt__PROGRAM__LTX_preloaded_symbols[] =
+{
+  { "@PROGRAM@", (void *) 0 },
+_LT_EOF
+	  $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/  {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext
+	  cat <<\_LT_EOF >> conftest.$ac_ext
+  {0, (void *) 0}
+};
+
+/* This works around a problem in FreeBSD linker */
+#ifdef FREEBSD_WORKAROUND
+static const void *lt_preloaded_setup() {
+  return lt__PROGRAM__LTX_preloaded_symbols;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+_LT_EOF
+	  # Now try linking the two files.
+	  mv conftest.$ac_objext conftstm.$ac_objext
+	  lt_save_LIBS="$LIBS"
+	  lt_save_CFLAGS="$CFLAGS"
+	  LIBS="conftstm.$ac_objext"
+	  CFLAGS="$CFLAGS$lt_prog_compiler_no_builtin_flag"
+	  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest${ac_exeext}; then
+	    pipe_works=yes
+	  fi
+	  LIBS="$lt_save_LIBS"
+	  CFLAGS="$lt_save_CFLAGS"
+	else
+	  echo "cannot find nm_test_func in $nlist" >&5
+	fi
+      else
+	echo "cannot find nm_test_var in $nlist" >&5
+      fi
+    else
+      echo "cannot run $lt_cv_sys_global_symbol_pipe" >&5
+    fi
+  else
+    echo "$progname: failed program was:" >&5
+    cat conftest.$ac_ext >&5
+  fi
+  rm -rf conftest* conftst*
+
+  # Do not use the global_symbol_pipe unless it works.
+  if test "$pipe_works" = yes; then
+    break
+  else
+    lt_cv_sys_global_symbol_pipe=
+  fi
+done
+
+fi
+
+if test -z "$lt_cv_sys_global_symbol_pipe"; then
+  lt_cv_sys_global_symbol_to_cdecl=
+fi
+if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: failed" >&5
+$as_echo "failed" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: ok" >&5
+$as_echo "ok" >&6; }
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# Check whether --enable-libtool-lock was given.
+if test "${enable_libtool_lock+set}" = set; then :
+  enableval=$enable_libtool_lock;
+fi
+
+test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes
+
+# Some flags need to be propagated to the compiler or linker for good
+# libtool support.
+case $host in
+ia64-*-hpux*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    case `/usr/bin/file conftest.$ac_objext` in
+      *ELF-32*)
+	HPUX_IA64_MODE="32"
+	;;
+      *ELF-64*)
+	HPUX_IA64_MODE="64"
+	;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+*-*-irix6*)
+  # Find out which ABI we are using.
+  echo '#line '$LINENO' "configure"' > conftest.$ac_ext
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    if test "$lt_cv_prog_gnu_ld" = yes; then
+      case `/usr/bin/file conftest.$ac_objext` in
+	*32-bit*)
+	  LD="${LD-ld} -melf32bsmip"
+	  ;;
+	*N32*)
+	  LD="${LD-ld} -melf32bmipn32"
+	  ;;
+	*64-bit*)
+	  LD="${LD-ld} -melf64bmip"
+	;;
+      esac
+    else
+      case `/usr/bin/file conftest.$ac_objext` in
+	*32-bit*)
+	  LD="${LD-ld} -32"
+	  ;;
+	*N32*)
+	  LD="${LD-ld} -n32"
+	  ;;
+	*64-bit*)
+	  LD="${LD-ld} -64"
+	  ;;
+      esac
+    fi
+  fi
+  rm -rf conftest*
+  ;;
+
+x86_64-*kfreebsd*-gnu|x86_64-*linux*|ppc*-*linux*|powerpc*-*linux*| \
+s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    case `/usr/bin/file conftest.o` in
+      *32-bit*)
+	case $host in
+	  x86_64-*kfreebsd*-gnu)
+	    LD="${LD-ld} -m elf_i386_fbsd"
+	    ;;
+	  x86_64-*linux*)
+	    LD="${LD-ld} -m elf_i386"
+	    ;;
+	  ppc64-*linux*|powerpc64-*linux*)
+	    LD="${LD-ld} -m elf32ppclinux"
+	    ;;
+	  s390x-*linux*)
+	    LD="${LD-ld} -m elf_s390"
+	    ;;
+	  sparc64-*linux*)
+	    LD="${LD-ld} -m elf32_sparc"
+	    ;;
+	esac
+	;;
+      *64-bit*)
+	case $host in
+	  x86_64-*kfreebsd*-gnu)
+	    LD="${LD-ld} -m elf_x86_64_fbsd"
+	    ;;
+	  x86_64-*linux*)
+	    LD="${LD-ld} -m elf_x86_64"
+	    ;;
+	  ppc*-*linux*|powerpc*-*linux*)
+	    LD="${LD-ld} -m elf64ppc"
+	    ;;
+	  s390*-*linux*|s390*-*tpf*)
+	    LD="${LD-ld} -m elf64_s390"
+	    ;;
+	  sparc*-*linux*)
+	    LD="${LD-ld} -m elf64_sparc"
+	    ;;
+	esac
+	;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+
+*-*-sco3.2v5*)
+  # On SCO OpenServer 5, we need -belf to get full-featured binaries.
+  SAVE_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS -belf"
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler needs -belf" >&5
+$as_echo_n "checking whether the C compiler needs -belf... " >&6; }
+if test "${lt_cv_cc_needs_belf+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+     if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  lt_cv_cc_needs_belf=yes
+else
+  lt_cv_cc_needs_belf=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+     ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_cc_needs_belf" >&5
+$as_echo "$lt_cv_cc_needs_belf" >&6; }
+  if test x"$lt_cv_cc_needs_belf" != x"yes"; then
+    # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf
+    CFLAGS="$SAVE_CFLAGS"
+  fi
+  ;;
+sparc*-*solaris*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    case `/usr/bin/file conftest.o` in
+    *64-bit*)
+      case $lt_cv_prog_gnu_ld in
+      yes*) LD="${LD-ld} -m elf64_sparc" ;;
+      *)
+	if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then
+	  LD="${LD-ld} -64"
+	fi
+	;;
+      esac
+      ;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+esac
+
+need_locks="$enable_libtool_lock"
+
+
+  case $host_os in
+    rhapsody* | darwin*)
+    if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}dsymutil", so it can be a program name with args.
+set dummy ${ac_tool_prefix}dsymutil; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_DSYMUTIL+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$DSYMUTIL"; then
+  ac_cv_prog_DSYMUTIL="$DSYMUTIL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_DSYMUTIL="${ac_tool_prefix}dsymutil"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+DSYMUTIL=$ac_cv_prog_DSYMUTIL
+if test -n "$DSYMUTIL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DSYMUTIL" >&5
+$as_echo "$DSYMUTIL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_DSYMUTIL"; then
+  ac_ct_DSYMUTIL=$DSYMUTIL
+  # Extract the first word of "dsymutil", so it can be a program name with args.
+set dummy dsymutil; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_DSYMUTIL+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_DSYMUTIL"; then
+  ac_cv_prog_ac_ct_DSYMUTIL="$ac_ct_DSYMUTIL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_DSYMUTIL="dsymutil"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_DSYMUTIL=$ac_cv_prog_ac_ct_DSYMUTIL
+if test -n "$ac_ct_DSYMUTIL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DSYMUTIL" >&5
+$as_echo "$ac_ct_DSYMUTIL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_DSYMUTIL" = x; then
+    DSYMUTIL=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    DSYMUTIL=$ac_ct_DSYMUTIL
+  fi
+else
+  DSYMUTIL="$ac_cv_prog_DSYMUTIL"
+fi
+
+    if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}nmedit", so it can be a program name with args.
+set dummy ${ac_tool_prefix}nmedit; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_NMEDIT+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$NMEDIT"; then
+  ac_cv_prog_NMEDIT="$NMEDIT" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_NMEDIT="${ac_tool_prefix}nmedit"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+NMEDIT=$ac_cv_prog_NMEDIT
+if test -n "$NMEDIT"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $NMEDIT" >&5
+$as_echo "$NMEDIT" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_NMEDIT"; then
+  ac_ct_NMEDIT=$NMEDIT
+  # Extract the first word of "nmedit", so it can be a program name with args.
+set dummy nmedit; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_NMEDIT+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_NMEDIT"; then
+  ac_cv_prog_ac_ct_NMEDIT="$ac_ct_NMEDIT" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_NMEDIT="nmedit"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_NMEDIT=$ac_cv_prog_ac_ct_NMEDIT
+if test -n "$ac_ct_NMEDIT"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_NMEDIT" >&5
+$as_echo "$ac_ct_NMEDIT" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_NMEDIT" = x; then
+    NMEDIT=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    NMEDIT=$ac_ct_NMEDIT
+  fi
+else
+  NMEDIT="$ac_cv_prog_NMEDIT"
+fi
+
+    if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}lipo", so it can be a program name with args.
+set dummy ${ac_tool_prefix}lipo; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_LIPO+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$LIPO"; then
+  ac_cv_prog_LIPO="$LIPO" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_LIPO="${ac_tool_prefix}lipo"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+LIPO=$ac_cv_prog_LIPO
+if test -n "$LIPO"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LIPO" >&5
+$as_echo "$LIPO" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_LIPO"; then
+  ac_ct_LIPO=$LIPO
+  # Extract the first word of "lipo", so it can be a program name with args.
+set dummy lipo; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_LIPO+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_LIPO"; then
+  ac_cv_prog_ac_ct_LIPO="$ac_ct_LIPO" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_LIPO="lipo"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_LIPO=$ac_cv_prog_ac_ct_LIPO
+if test -n "$ac_ct_LIPO"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_LIPO" >&5
+$as_echo "$ac_ct_LIPO" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_LIPO" = x; then
+    LIPO=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    LIPO=$ac_ct_LIPO
+  fi
+else
+  LIPO="$ac_cv_prog_LIPO"
+fi
+
+    if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}otool", so it can be a program name with args.
+set dummy ${ac_tool_prefix}otool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_OTOOL+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$OTOOL"; then
+  ac_cv_prog_OTOOL="$OTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_OTOOL="${ac_tool_prefix}otool"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+OTOOL=$ac_cv_prog_OTOOL
+if test -n "$OTOOL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL" >&5
+$as_echo "$OTOOL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OTOOL"; then
+  ac_ct_OTOOL=$OTOOL
+  # Extract the first word of "otool", so it can be a program name with args.
+set dummy otool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_OTOOL+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_OTOOL"; then
+  ac_cv_prog_ac_ct_OTOOL="$ac_ct_OTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_OTOOL="otool"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OTOOL=$ac_cv_prog_ac_ct_OTOOL
+if test -n "$ac_ct_OTOOL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL" >&5
+$as_echo "$ac_ct_OTOOL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_OTOOL" = x; then
+    OTOOL=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    OTOOL=$ac_ct_OTOOL
+  fi
+else
+  OTOOL="$ac_cv_prog_OTOOL"
+fi
+
+    if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}otool64", so it can be a program name with args.
+set dummy ${ac_tool_prefix}otool64; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_OTOOL64+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$OTOOL64"; then
+  ac_cv_prog_OTOOL64="$OTOOL64" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_OTOOL64="${ac_tool_prefix}otool64"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+OTOOL64=$ac_cv_prog_OTOOL64
+if test -n "$OTOOL64"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL64" >&5
+$as_echo "$OTOOL64" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OTOOL64"; then
+  ac_ct_OTOOL64=$OTOOL64
+  # Extract the first word of "otool64", so it can be a program name with args.
+set dummy otool64; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_OTOOL64+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_OTOOL64"; then
+  ac_cv_prog_ac_ct_OTOOL64="$ac_ct_OTOOL64" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_OTOOL64="otool64"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OTOOL64=$ac_cv_prog_ac_ct_OTOOL64
+if test -n "$ac_ct_OTOOL64"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL64" >&5
+$as_echo "$ac_ct_OTOOL64" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_OTOOL64" = x; then
+    OTOOL64=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    OTOOL64=$ac_ct_OTOOL64
+  fi
+else
+  OTOOL64="$ac_cv_prog_OTOOL64"
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -single_module linker flag" >&5
+$as_echo_n "checking for -single_module linker flag... " >&6; }
+if test "${lt_cv_apple_cc_single_mod+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_apple_cc_single_mod=no
+      if test -z "${LT_MULTI_MODULE}"; then
+	# By default we will add the -single_module flag. You can override
+	# by either setting the environment variable LT_MULTI_MODULE
+	# non-empty at configure time, or by adding -multi_module to the
+	# link flags.
+	rm -rf libconftest.dylib*
+	echo "int foo(void){return 1;}" > conftest.c
+	echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+-dynamiclib -Wl,-single_module conftest.c" >&5
+	$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+	  -dynamiclib -Wl,-single_module conftest.c 2>conftest.err
+        _lt_result=$?
+	if test -f libconftest.dylib && test ! -s conftest.err && test $_lt_result = 0; then
+	  lt_cv_apple_cc_single_mod=yes
+	else
+	  cat conftest.err >&5
+	fi
+	rm -rf libconftest.dylib*
+	rm -f conftest.*
+      fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_apple_cc_single_mod" >&5
+$as_echo "$lt_cv_apple_cc_single_mod" >&6; }
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -exported_symbols_list linker flag" >&5
+$as_echo_n "checking for -exported_symbols_list linker flag... " >&6; }
+if test "${lt_cv_ld_exported_symbols_list+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_ld_exported_symbols_list=no
+      save_LDFLAGS=$LDFLAGS
+      echo "_main" > conftest.sym
+      LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym"
+      if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  lt_cv_ld_exported_symbols_list=yes
+else
+  lt_cv_ld_exported_symbols_list=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+	LDFLAGS="$save_LDFLAGS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_exported_symbols_list" >&5
+$as_echo "$lt_cv_ld_exported_symbols_list" >&6; }
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -force_load linker flag" >&5
+$as_echo_n "checking for -force_load linker flag... " >&6; }
+if test "${lt_cv_ld_force_load+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_ld_force_load=no
+      cat > conftest.c << _LT_EOF
+int forced_loaded() { return 2;}
+_LT_EOF
+      echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&5
+      $LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&5
+      echo "$AR cru libconftest.a conftest.o" >&5
+      $AR cru libconftest.a conftest.o 2>&5
+      cat > conftest.c << _LT_EOF
+int main() { return 0;}
+_LT_EOF
+      echo "$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a" >&5
+      $LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a 2>conftest.err
+      _lt_result=$?
+      if test -f conftest && test ! -s conftest.err && test $_lt_result = 0 && $GREP forced_load conftest 2>&1 >/dev/null; then
+	lt_cv_ld_force_load=yes
+      else
+	cat conftest.err >&5
+      fi
+        rm -f conftest.err libconftest.a conftest conftest.c
+        rm -rf conftest.dSYM
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_force_load" >&5
+$as_echo "$lt_cv_ld_force_load" >&6; }
+    case $host_os in
+    rhapsody* | darwin1.[012])
+      _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;;
+    darwin1.*)
+      _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+    darwin*) # darwin 5.x on
+      # if running on 10.5 or later, the deployment target defaults
+      # to the OS version, if on x86, and 10.4, the deployment
+      # target defaults to 10.4. Don't you love it?
+      case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
+	10.0,*86*-darwin8*|10.0,*-darwin[91]*)
+	  _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+	10.[012]*)
+	  _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+	10.*)
+	  _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+      esac
+    ;;
+  esac
+    if test "$lt_cv_apple_cc_single_mod" = "yes"; then
+      _lt_dar_single_mod='$single_module'
+    fi
+    if test "$lt_cv_ld_exported_symbols_list" = "yes"; then
+      _lt_dar_export_syms=' ${wl}-exported_symbols_list,$output_objdir/${libname}-symbols.expsym'
+    else
+      _lt_dar_export_syms='~$NMEDIT -s $output_objdir/${libname}-symbols.expsym ${lib}'
+    fi
+    if test "$DSYMUTIL" != ":" && test "$lt_cv_ld_force_load" = "no"; then
+      _lt_dsymutil='~$DSYMUTIL $lib || :'
+    else
+      _lt_dsymutil=
+    fi
+    ;;
+  esac
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5
+$as_echo_n "checking how to run the C preprocessor... " >&6; }
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+  if test "${ac_cv_prog_CPP+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+      # Double quotes because CPP needs to be expanded
+    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
+    do
+      ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  # Broken: success on invalid input.
+continue
+else
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+  break
+fi
+
+    done
+    ac_cv_prog_CPP=$CPP
+
+fi
+  CPP=$ac_cv_prog_CPP
+else
+  ac_cv_prog_CPP=$CPP
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5
+$as_echo "$CPP" >&6; }
+ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  # Broken: success on invalid input.
+continue
+else
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+
+else
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details." "$LINENO" 5; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
+$as_echo_n "checking for ANSI C header files... " >&6; }
+if test "${ac_cv_header_stdc+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_header_stdc=yes
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "memchr" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "free" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+  if test "$cross_compiling" = yes; then :
+  :
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ctype.h>
+#include <stdlib.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+		   (('a' <= (c) && (c) <= 'i') \
+		     || ('j' <= (c) && (c) <= 'r') \
+		     || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+  int i;
+  for (i = 0; i < 256; i++)
+    if (XOR (islower (i), ISLOWER (i))
+	|| toupper (i) != TOUPPER (i))
+      return 2;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
+$as_echo "$ac_cv_header_stdc" >&6; }
+if test $ac_cv_header_stdc = yes; then
+
+$as_echo "#define STDC_HEADERS 1" >>confdefs.h
+
+fi
+
+# On IRIX 5.3, sys/types and inttypes.h are conflicting.
+for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
+		  inttypes.h stdint.h unistd.h
+do :
+  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
+"
+eval as_val=\$$as_ac_Header
+   if test "x$as_val" = x""yes; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in dlfcn.h
+do :
+  ac_fn_c_check_header_compile "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default
+"
+if test "x$ac_cv_header_dlfcn_h" = x""yes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_DLFCN_H 1
+_ACEOF
+
+fi
+
+done
+
+
+
+
+
+# Set options
+
+
+
+        enable_dlopen=no
+
+
+
+            # Check whether --enable-shared was given.
+if test "${enable_shared+set}" = set; then :
+  enableval=$enable_shared; p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_shared=yes ;;
+    no) enable_shared=no ;;
+    *)
+      enable_shared=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_shared=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac
+else
+  enable_shared=yes
+fi
+
+
+
+
+
+
+
+
+
+  # Check whether --enable-static was given.
+if test "${enable_static+set}" = set; then :
+  enableval=$enable_static; p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_static=yes ;;
+    no) enable_static=no ;;
+    *)
+     enable_static=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_static=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac
+else
+  enable_static=yes
+fi
+
+
+
+
+
+
+
+
+
+
+# Check whether --with-pic was given.
+if test "${with_pic+set}" = set; then :
+  withval=$with_pic; pic_mode="$withval"
+else
+  pic_mode=default
+fi
+
+
+test -z "$pic_mode" && pic_mode=default
+
+
+
+
+
+
+
+  # Check whether --enable-fast-install was given.
+if test "${enable_fast_install+set}" = set; then :
+  enableval=$enable_fast_install; p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_fast_install=yes ;;
+    no) enable_fast_install=no ;;
+    *)
+      enable_fast_install=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_fast_install=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac
+else
+  enable_fast_install=yes
+fi
+
+
+
+
+
+
+
+
+
+
+
+# This can be used to rebuild libtool when needed
+LIBTOOL_DEPS="$ltmain"
+
+# Always use our own libtool.
+LIBTOOL='$(SHELL) $(top_builddir)/libtool'
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+test -z "$LN_S" && LN_S="ln -s"
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+if test -n "${ZSH_VERSION+set}" ; then
+   setopt NO_GLOB_SUBST
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for objdir" >&5
+$as_echo_n "checking for objdir... " >&6; }
+if test "${lt_cv_objdir+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  rm -f .libs 2>/dev/null
+mkdir .libs 2>/dev/null
+if test -d .libs; then
+  lt_cv_objdir=.libs
+else
+  # MS-DOS does not allow filenames that begin with a dot.
+  lt_cv_objdir=_libs
+fi
+rmdir .libs 2>/dev/null
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_objdir" >&5
+$as_echo "$lt_cv_objdir" >&6; }
+objdir=$lt_cv_objdir
+
+
+
+
+
+cat >>confdefs.h <<_ACEOF
+#define LT_OBJDIR "$lt_cv_objdir/"
+_ACEOF
+
+
+
+
+case $host_os in
+aix3*)
+  # AIX sometimes has problems with the GCC collect2 program.  For some
+  # reason, if we set the COLLECT_NAMES environment variable, the problems
+  # vanish in a puff of smoke.
+  if test "X${COLLECT_NAMES+set}" != Xset; then
+    COLLECT_NAMES=
+    export COLLECT_NAMES
+  fi
+  ;;
+esac
+
+# Global variables:
+ofile=libtool
+can_build_shared=yes
+
+# All known linkers require a `.a' archive for static linking (except MSVC,
+# which needs '.lib').
+libext=a
+
+with_gnu_ld="$lt_cv_prog_gnu_ld"
+
+old_CC="$CC"
+old_CFLAGS="$CFLAGS"
+
+# Set sane defaults for various variables
+test -z "$CC" && CC=cc
+test -z "$LTCC" && LTCC=$CC
+test -z "$LTCFLAGS" && LTCFLAGS=$CFLAGS
+test -z "$LD" && LD=ld
+test -z "$ac_objext" && ac_objext=o
+
+for cc_temp in $compiler""; do
+  case $cc_temp in
+    compile | *[\\/]compile | ccache | *[\\/]ccache ) ;;
+    distcc | *[\\/]distcc | purify | *[\\/]purify ) ;;
+    \-*) ;;
+    *) break;;
+  esac
+done
+cc_basename=`$ECHO "$cc_temp" | $SED "s%.*/%%; s%^$host_alias-%%"`
+
+
+# Only perform the check for file, if the check method requires it
+test -z "$MAGIC_CMD" && MAGIC_CMD=file
+case $deplibs_check_method in
+file_magic*)
+  if test "$file_magic_cmd" = '$MAGIC_CMD'; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ${ac_tool_prefix}file" >&5
+$as_echo_n "checking for ${ac_tool_prefix}file... " >&6; }
+if test "${lt_cv_path_MAGIC_CMD+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $MAGIC_CMD in
+[\\/*] |  ?:[\\/]*)
+  lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+  ;;
+*)
+  lt_save_MAGIC_CMD="$MAGIC_CMD"
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  ac_dummy="/usr/bin$PATH_SEPARATOR$PATH"
+  for ac_dir in $ac_dummy; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/${ac_tool_prefix}file; then
+      lt_cv_path_MAGIC_CMD="$ac_dir/${ac_tool_prefix}file"
+      if test -n "$file_magic_test_file"; then
+	case $deplibs_check_method in
+	"file_magic "*)
+	  file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+	  MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+	  if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+	    $EGREP "$file_magic_regex" > /dev/null; then
+	    :
+	  else
+	    cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such.  This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem.  Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+	  fi ;;
+	esac
+      fi
+      break
+    fi
+  done
+  IFS="$lt_save_ifs"
+  MAGIC_CMD="$lt_save_MAGIC_CMD"
+  ;;
+esac
+fi
+
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5
+$as_echo "$MAGIC_CMD" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+
+
+
+if test -z "$lt_cv_path_MAGIC_CMD"; then
+  if test -n "$ac_tool_prefix"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for file" >&5
+$as_echo_n "checking for file... " >&6; }
+if test "${lt_cv_path_MAGIC_CMD+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $MAGIC_CMD in
+[\\/*] |  ?:[\\/]*)
+  lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+  ;;
+*)
+  lt_save_MAGIC_CMD="$MAGIC_CMD"
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  ac_dummy="/usr/bin$PATH_SEPARATOR$PATH"
+  for ac_dir in $ac_dummy; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/file; then
+      lt_cv_path_MAGIC_CMD="$ac_dir/file"
+      if test -n "$file_magic_test_file"; then
+	case $deplibs_check_method in
+	"file_magic "*)
+	  file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+	  MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+	  if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+	    $EGREP "$file_magic_regex" > /dev/null; then
+	    :
+	  else
+	    cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such.  This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem.  Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+	  fi ;;
+	esac
+      fi
+      break
+    fi
+  done
+  IFS="$lt_save_ifs"
+  MAGIC_CMD="$lt_save_MAGIC_CMD"
+  ;;
+esac
+fi
+
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5
+$as_echo "$MAGIC_CMD" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  else
+    MAGIC_CMD=:
+  fi
+fi
+
+  fi
+  ;;
+esac
+
+# Use C for the default configuration in the libtool script
+
+lt_save_CC="$CC"
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+# Source file extension for C test sources.
+ac_ext=c
+
+# Object file extension for compiled C test sources.
+objext=o
+objext=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="int some_variable = 0;"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='int main(){return(0);}'
+
+
+
+
+
+
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+
+# Save the default compiler, since it gets overwritten when the other
+# tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP.
+compiler_DEFAULT=$CC
+
+# save warnings/boilerplate of simple test code
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_compile_test_code" >conftest.$ac_ext
+eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_compiler_boilerplate=`cat conftest.err`
+$RM conftest*
+
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_link_test_code" >conftest.$ac_ext
+eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_linker_boilerplate=`cat conftest.err`
+$RM -r conftest*
+
+
+## CAVEAT EMPTOR:
+## There is no encapsulation within the following macros, do not change
+## the running order or otherwise move them around unless you know exactly
+## what you are doing...
+if test -n "$compiler"; then
+
+lt_prog_compiler_no_builtin_flag=
+
+if test "$GCC" = yes; then
+  case $cc_basename in
+  nvcc*)
+    lt_prog_compiler_no_builtin_flag=' -Xcompiler -fno-builtin' ;;
+  *)
+    lt_prog_compiler_no_builtin_flag=' -fno-builtin' ;;
+  esac
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -fno-rtti -fno-exceptions" >&5
+$as_echo_n "checking if $compiler supports -fno-rtti -fno-exceptions... " >&6; }
+if test "${lt_cv_prog_compiler_rtti_exceptions+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_rtti_exceptions=no
+   ac_outfile=conftest.$ac_objext
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+   lt_compiler_flag="-fno-rtti -fno-exceptions"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   # The option is referenced via a variable to avoid confusing sed.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5)
+   (eval "$lt_compile" 2>conftest.err)
+   ac_status=$?
+   cat conftest.err >&5
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   if (exit $ac_status) && test -s "$ac_outfile"; then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings other than the usual output.
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp
+     $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+     if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+       lt_cv_prog_compiler_rtti_exceptions=yes
+     fi
+   fi
+   $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_rtti_exceptions" >&5
+$as_echo "$lt_cv_prog_compiler_rtti_exceptions" >&6; }
+
+if test x"$lt_cv_prog_compiler_rtti_exceptions" = xyes; then
+    lt_prog_compiler_no_builtin_flag="$lt_prog_compiler_no_builtin_flag -fno-rtti -fno-exceptions"
+else
+    :
+fi
+
+fi
+
+
+
+
+
+
+  lt_prog_compiler_wl=
+lt_prog_compiler_pic=
+lt_prog_compiler_static=
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $compiler option to produce PIC" >&5
+$as_echo_n "checking for $compiler option to produce PIC... " >&6; }
+
+  if test "$GCC" = yes; then
+    lt_prog_compiler_wl='-Wl,'
+    lt_prog_compiler_static='-static'
+
+    case $host_os in
+      aix*)
+      # All AIX code is PIC.
+      if test "$host_cpu" = ia64; then
+	# AIX 5 now supports IA64 processor
+	lt_prog_compiler_static='-Bstatic'
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            lt_prog_compiler_pic='-fPIC'
+        ;;
+      m68k)
+            # FIXME: we need at least 68020 code to build shared libraries, but
+            # adding the `-m68020' flag to GCC prevents building anything better,
+            # like `-m68040'.
+            lt_prog_compiler_pic='-m68020 -resident32 -malways-restore-a4'
+        ;;
+      esac
+      ;;
+
+    beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+      # PIC is the default for these OSes.
+      ;;
+
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      # This hack is so that the source file can tell whether it is being
+      # built for inclusion in a dll (and should export symbols for example).
+      # Although the cygwin gcc ignores -fPIC, still need this for old-style
+      # (--disable-auto-import) libraries
+      lt_prog_compiler_pic='-DDLL_EXPORT'
+      ;;
+
+    darwin* | rhapsody*)
+      # PIC is the default on this platform
+      # Common symbols not allowed in MH_DYLIB files
+      lt_prog_compiler_pic='-fno-common'
+      ;;
+
+    haiku*)
+      # PIC is the default for Haiku.
+      # The "-static" flag exists, but is broken.
+      lt_prog_compiler_static=
+      ;;
+
+    hpux*)
+      # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+      # PA HP-UX.  On IA64 HP-UX, PIC is the default but the pic flag
+      # sets the default TLS model and affects inlining.
+      case $host_cpu in
+      hppa*64*)
+	# +Z the default
+	;;
+      *)
+	lt_prog_compiler_pic='-fPIC'
+	;;
+      esac
+      ;;
+
+    interix[3-9]*)
+      # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+      # Instead, we relocate shared libraries at runtime.
+      ;;
+
+    msdosdjgpp*)
+      # Just because we use GCC doesn't mean we suddenly get shared libraries
+      # on systems that don't support them.
+      lt_prog_compiler_can_build_shared=no
+      enable_shared=no
+      ;;
+
+    *nto* | *qnx*)
+      # QNX uses GNU C++, but need to define -shared option too, otherwise
+      # it will coredump.
+      lt_prog_compiler_pic='-fPIC -shared'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec; then
+	lt_prog_compiler_pic=-Kconform_pic
+      fi
+      ;;
+
+    *)
+      lt_prog_compiler_pic='-fPIC'
+      ;;
+    esac
+
+    case $cc_basename in
+    nvcc*) # Cuda Compiler Driver 2.2
+      lt_prog_compiler_wl='-Xlinker '
+      lt_prog_compiler_pic='-Xcompiler -fPIC'
+      ;;
+    esac
+  else
+    # PORTME Check for flag to pass linker flags through the system compiler.
+    case $host_os in
+    aix*)
+      lt_prog_compiler_wl='-Wl,'
+      if test "$host_cpu" = ia64; then
+	# AIX 5 now supports IA64 processor
+	lt_prog_compiler_static='-Bstatic'
+      else
+	lt_prog_compiler_static='-bnso -bI:/lib/syscalls.exp'
+      fi
+      ;;
+
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      # This hack is so that the source file can tell whether it is being
+      # built for inclusion in a dll (and should export symbols for example).
+      lt_prog_compiler_pic='-DDLL_EXPORT'
+      ;;
+
+    hpux9* | hpux10* | hpux11*)
+      lt_prog_compiler_wl='-Wl,'
+      # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but
+      # not for PA HP-UX.
+      case $host_cpu in
+      hppa*64*|ia64*)
+	# +Z the default
+	;;
+      *)
+	lt_prog_compiler_pic='+Z'
+	;;
+      esac
+      # Is there a better lt_prog_compiler_static that works with the bundled CC?
+      lt_prog_compiler_static='${wl}-a ${wl}archive'
+      ;;
+
+    irix5* | irix6* | nonstopux*)
+      lt_prog_compiler_wl='-Wl,'
+      # PIC (with -KPIC) is the default.
+      lt_prog_compiler_static='-non_shared'
+      ;;
+
+    linux* | k*bsd*-gnu | kopensolaris*-gnu)
+      case $cc_basename in
+      # old Intel for x86_64 which still supported -KPIC.
+      ecc*)
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='-KPIC'
+	lt_prog_compiler_static='-static'
+        ;;
+      # icc used to be incompatible with GCC.
+      # ICC 10 doesn't accept -KPIC any more.
+      icc* | ifort*)
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='-fPIC'
+	lt_prog_compiler_static='-static'
+        ;;
+      # Lahey Fortran 8.1.
+      lf95*)
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='--shared'
+	lt_prog_compiler_static='--static'
+	;;
+      pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*)
+        # Portland Group compilers (*not* the Pentium gcc compiler,
+	# which looks to be a dead project)
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='-fpic'
+	lt_prog_compiler_static='-Bstatic'
+        ;;
+      ccc*)
+        lt_prog_compiler_wl='-Wl,'
+        # All Alpha code is PIC.
+        lt_prog_compiler_static='-non_shared'
+        ;;
+      xl* | bgxl* | bgf* | mpixl*)
+	# IBM XL C 8.0/Fortran 10.1, 11.1 on PPC and BlueGene
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='-qpic'
+	lt_prog_compiler_static='-qstaticlink'
+	;;
+      *)
+	case `$CC -V 2>&1 | sed 5q` in
+	*Sun\ F* | *Sun*Fortran*)
+	  # Sun Fortran 8.3 passes all unrecognized flags to the linker
+	  lt_prog_compiler_pic='-KPIC'
+	  lt_prog_compiler_static='-Bstatic'
+	  lt_prog_compiler_wl=''
+	  ;;
+	*Sun\ C*)
+	  # Sun C 5.9
+	  lt_prog_compiler_pic='-KPIC'
+	  lt_prog_compiler_static='-Bstatic'
+	  lt_prog_compiler_wl='-Wl,'
+	  ;;
+	esac
+	;;
+      esac
+      ;;
+
+    newsos6)
+      lt_prog_compiler_pic='-KPIC'
+      lt_prog_compiler_static='-Bstatic'
+      ;;
+
+    *nto* | *qnx*)
+      # QNX uses GNU C++, but need to define -shared option too, otherwise
+      # it will coredump.
+      lt_prog_compiler_pic='-fPIC -shared'
+      ;;
+
+    osf3* | osf4* | osf5*)
+      lt_prog_compiler_wl='-Wl,'
+      # All OSF/1 code is PIC.
+      lt_prog_compiler_static='-non_shared'
+      ;;
+
+    rdos*)
+      lt_prog_compiler_static='-non_shared'
+      ;;
+
+    solaris*)
+      lt_prog_compiler_pic='-KPIC'
+      lt_prog_compiler_static='-Bstatic'
+      case $cc_basename in
+      f77* | f90* | f95*)
+	lt_prog_compiler_wl='-Qoption ld ';;
+      *)
+	lt_prog_compiler_wl='-Wl,';;
+      esac
+      ;;
+
+    sunos4*)
+      lt_prog_compiler_wl='-Qoption ld '
+      lt_prog_compiler_pic='-PIC'
+      lt_prog_compiler_static='-Bstatic'
+      ;;
+
+    sysv4 | sysv4.2uw2* | sysv4.3*)
+      lt_prog_compiler_wl='-Wl,'
+      lt_prog_compiler_pic='-KPIC'
+      lt_prog_compiler_static='-Bstatic'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec ;then
+	lt_prog_compiler_pic='-Kconform_pic'
+	lt_prog_compiler_static='-Bstatic'
+      fi
+      ;;
+
+    sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+      lt_prog_compiler_wl='-Wl,'
+      lt_prog_compiler_pic='-KPIC'
+      lt_prog_compiler_static='-Bstatic'
+      ;;
+
+    unicos*)
+      lt_prog_compiler_wl='-Wl,'
+      lt_prog_compiler_can_build_shared=no
+      ;;
+
+    uts4*)
+      lt_prog_compiler_pic='-pic'
+      lt_prog_compiler_static='-Bstatic'
+      ;;
+
+    *)
+      lt_prog_compiler_can_build_shared=no
+      ;;
+    esac
+  fi
+
+case $host_os in
+  # For platforms which do not support PIC, -DPIC is meaningless:
+  *djgpp*)
+    lt_prog_compiler_pic=
+    ;;
+  *)
+    lt_prog_compiler_pic="$lt_prog_compiler_pic -DPIC"
+    ;;
+esac
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_prog_compiler_pic" >&5
+$as_echo "$lt_prog_compiler_pic" >&6; }
+
+
+
+
+
+
+#
+# Check to make sure the PIC flag actually works.
+#
+if test -n "$lt_prog_compiler_pic"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler PIC flag $lt_prog_compiler_pic works" >&5
+$as_echo_n "checking if $compiler PIC flag $lt_prog_compiler_pic works... " >&6; }
+if test "${lt_cv_prog_compiler_pic_works+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_pic_works=no
+   ac_outfile=conftest.$ac_objext
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+   lt_compiler_flag="$lt_prog_compiler_pic -DPIC"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   # The option is referenced via a variable to avoid confusing sed.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5)
+   (eval "$lt_compile" 2>conftest.err)
+   ac_status=$?
+   cat conftest.err >&5
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   if (exit $ac_status) && test -s "$ac_outfile"; then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings other than the usual output.
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp
+     $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+     if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+       lt_cv_prog_compiler_pic_works=yes
+     fi
+   fi
+   $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_pic_works" >&5
+$as_echo "$lt_cv_prog_compiler_pic_works" >&6; }
+
+if test x"$lt_cv_prog_compiler_pic_works" = xyes; then
+    case $lt_prog_compiler_pic in
+     "" | " "*) ;;
+     *) lt_prog_compiler_pic=" $lt_prog_compiler_pic" ;;
+     esac
+else
+    lt_prog_compiler_pic=
+     lt_prog_compiler_can_build_shared=no
+fi
+
+fi
+
+
+
+
+
+
+#
+# Check to make sure the static flag actually works.
+#
+wl=$lt_prog_compiler_wl eval lt_tmp_static_flag=\"$lt_prog_compiler_static\"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler static flag $lt_tmp_static_flag works" >&5
+$as_echo_n "checking if $compiler static flag $lt_tmp_static_flag works... " >&6; }
+if test "${lt_cv_prog_compiler_static_works+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_static_works=no
+   save_LDFLAGS="$LDFLAGS"
+   LDFLAGS="$LDFLAGS $lt_tmp_static_flag"
+   echo "$lt_simple_link_test_code" > conftest.$ac_ext
+   if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
+     # The linker can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     if test -s conftest.err; then
+       # Append any errors to the config.log.
+       cat conftest.err 1>&5
+       $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp
+       $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+       if diff conftest.exp conftest.er2 >/dev/null; then
+         lt_cv_prog_compiler_static_works=yes
+       fi
+     else
+       lt_cv_prog_compiler_static_works=yes
+     fi
+   fi
+   $RM -r conftest*
+   LDFLAGS="$save_LDFLAGS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_static_works" >&5
+$as_echo "$lt_cv_prog_compiler_static_works" >&6; }
+
+if test x"$lt_cv_prog_compiler_static_works" = xyes; then
+    :
+else
+    lt_prog_compiler_static=
+fi
+
+
+
+
+
+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5
+$as_echo_n "checking if $compiler supports -c -o file.$ac_objext... " >&6; }
+if test "${lt_cv_prog_compiler_c_o+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_c_o=no
+   $RM -r conftest 2>/dev/null
+   mkdir conftest
+   cd conftest
+   mkdir out
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+   lt_compiler_flag="-o out/conftest2.$ac_objext"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5)
+   (eval "$lt_compile" 2>out/conftest.err)
+   ac_status=$?
+   cat out/conftest.err >&5
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   if (exit $ac_status) && test -s out/conftest2.$ac_objext
+   then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp
+     $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+     if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+       lt_cv_prog_compiler_c_o=yes
+     fi
+   fi
+   chmod u+w . 2>&5
+   $RM conftest*
+   # SGI C++ compiler will create directory out/ii_files/ for
+   # template instantiation
+   test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+   $RM out/* && rmdir out
+   cd ..
+   $RM -r conftest
+   $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_c_o" >&5
+$as_echo "$lt_cv_prog_compiler_c_o" >&6; }
+
+
+
+
+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5
+$as_echo_n "checking if $compiler supports -c -o file.$ac_objext... " >&6; }
+if test "${lt_cv_prog_compiler_c_o+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_c_o=no
+   $RM -r conftest 2>/dev/null
+   mkdir conftest
+   cd conftest
+   mkdir out
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+   lt_compiler_flag="-o out/conftest2.$ac_objext"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5)
+   (eval "$lt_compile" 2>out/conftest.err)
+   ac_status=$?
+   cat out/conftest.err >&5
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   if (exit $ac_status) && test -s out/conftest2.$ac_objext
+   then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp
+     $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+     if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+       lt_cv_prog_compiler_c_o=yes
+     fi
+   fi
+   chmod u+w . 2>&5
+   $RM conftest*
+   # SGI C++ compiler will create directory out/ii_files/ for
+   # template instantiation
+   test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+   $RM out/* && rmdir out
+   cd ..
+   $RM -r conftest
+   $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_c_o" >&5
+$as_echo "$lt_cv_prog_compiler_c_o" >&6; }
+
+
+
+
+hard_links="nottested"
+if test "$lt_cv_prog_compiler_c_o" = no && test "$need_locks" != no; then
+  # do not overwrite the value of need_locks provided by the user
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can lock with hard links" >&5
+$as_echo_n "checking if we can lock with hard links... " >&6; }
+  hard_links=yes
+  $RM conftest*
+  ln conftest.a conftest.b 2>/dev/null && hard_links=no
+  touch conftest.a
+  ln conftest.a conftest.b 2>&5 || hard_links=no
+  ln conftest.a conftest.b 2>/dev/null && hard_links=no
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $hard_links" >&5
+$as_echo "$hard_links" >&6; }
+  if test "$hard_links" = no; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe" >&5
+$as_echo "$as_me: WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe" >&2;}
+    need_locks=warn
+  fi
+else
+  need_locks=no
+fi
+
+
+
+
+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the $compiler linker ($LD) supports shared libraries" >&5
+$as_echo_n "checking whether the $compiler linker ($LD) supports shared libraries... " >&6; }
+
+  runpath_var=
+  allow_undefined_flag=
+  always_export_symbols=no
+  archive_cmds=
+  archive_expsym_cmds=
+  compiler_needs_object=no
+  enable_shared_with_static_runtimes=no
+  export_dynamic_flag_spec=
+  export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+  hardcode_automatic=no
+  hardcode_direct=no
+  hardcode_direct_absolute=no
+  hardcode_libdir_flag_spec=
+  hardcode_libdir_flag_spec_ld=
+  hardcode_libdir_separator=
+  hardcode_minus_L=no
+  hardcode_shlibpath_var=unsupported
+  inherit_rpath=no
+  link_all_deplibs=unknown
+  module_cmds=
+  module_expsym_cmds=
+  old_archive_from_new_cmds=
+  old_archive_from_expsyms_cmds=
+  thread_safe_flag_spec=
+  whole_archive_flag_spec=
+  # include_expsyms should be a list of space-separated symbols to be *always*
+  # included in the symbol list
+  include_expsyms=
+  # exclude_expsyms can be an extended regexp of symbols to exclude
+  # it will be wrapped by ` (' and `)$', so one must not match beginning or
+  # end of line.  Example: `a|bc|.*d.*' will exclude the symbols `a' and `bc',
+  # as well as any symbol that contains `d'.
+  exclude_expsyms='_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*'
+  # Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out
+  # platforms (ab)use it in PIC code, but their linkers get confused if
+  # the symbol is explicitly referenced.  Since portable code cannot
+  # rely on this symbol name, it's probably fine to never include it in
+  # preloaded symbol tables.
+  # Exclude shared library initialization/finalization symbols.
+  extract_expsyms_cmds=
+
+  case $host_os in
+  cygwin* | mingw* | pw32* | cegcc*)
+    # FIXME: the MSVC++ port hasn't been tested in a loooong time
+    # When not using gcc, we currently assume that we are using
+    # Microsoft Visual C++.
+    if test "$GCC" != yes; then
+      with_gnu_ld=no
+    fi
+    ;;
+  interix*)
+    # we just hope/assume this is gcc and not c89 (= MSVC++)
+    with_gnu_ld=yes
+    ;;
+  openbsd*)
+    with_gnu_ld=no
+    ;;
+  esac
+
+  ld_shlibs=yes
+
+  # On some targets, GNU ld is compatible enough with the native linker
+  # that we're better off using the native interface for both.
+  lt_use_gnu_ld_interface=no
+  if test "$with_gnu_ld" = yes; then
+    case $host_os in
+      aix*)
+	# The AIX port of GNU ld has always aspired to compatibility
+	# with the native linker.  However, as the warning in the GNU ld
+	# block says, versions before 2.19.5* couldn't really create working
+	# shared libraries, regardless of the interface used.
+	case `$LD -v 2>&1` in
+	  *\ \(GNU\ Binutils\)\ 2.19.5*) ;;
+	  *\ \(GNU\ Binutils\)\ 2.[2-9]*) ;;
+	  *\ \(GNU\ Binutils\)\ [3-9]*) ;;
+	  *)
+	    lt_use_gnu_ld_interface=yes
+	    ;;
+	esac
+	;;
+      *)
+	lt_use_gnu_ld_interface=yes
+	;;
+    esac
+  fi
+
+  if test "$lt_use_gnu_ld_interface" = yes; then
+    # If archive_cmds runs LD, not CC, wlarc should be empty
+    wlarc='${wl}'
+
+    # Set some defaults for GNU ld with shared library support. These
+    # are reset later if shared libraries are not supported. Putting them
+    # here allows them to be overridden if necessary.
+    runpath_var=LD_RUN_PATH
+    hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+    export_dynamic_flag_spec='${wl}--export-dynamic'
+    # ancient GNU ld didn't support --whole-archive et. al.
+    if $LD --help 2>&1 | $GREP 'no-whole-archive' > /dev/null; then
+      whole_archive_flag_spec="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+    else
+      whole_archive_flag_spec=
+    fi
+    supports_anon_versioning=no
+    case `$LD -v 2>&1` in
+      *GNU\ gold*) supports_anon_versioning=yes ;;
+      *\ [01].* | *\ 2.[0-9].* | *\ 2.10.*) ;; # catch versions < 2.11
+      *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ...
+      *\ 2.11.92.0.12\ *) supports_anon_versioning=yes ;; # Mandrake 8.2 ...
+      *\ 2.11.*) ;; # other 2.11 versions
+      *) supports_anon_versioning=yes ;;
+    esac
+
+    # See if GNU ld supports shared libraries.
+    case $host_os in
+    aix[3-9]*)
+      # On AIX/PPC, the GNU linker is very broken
+      if test "$host_cpu" != ia64; then
+	ld_shlibs=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: the GNU linker, at least up to release 2.19, is reported
+*** to be unable to reliably create shared libraries on AIX.
+*** Therefore, libtool is disabling shared libraries support.  If you
+*** really care for shared libraries, you may want to install binutils
+*** 2.20 or above, or modify your PATH so that a non-GNU linker is found.
+*** You will then need to restart the configuration process.
+
+_LT_EOF
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+            archive_expsym_cmds=''
+        ;;
+      m68k)
+            archive_cmds='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+            hardcode_libdir_flag_spec='-L$libdir'
+            hardcode_minus_L=yes
+        ;;
+      esac
+      ;;
+
+    beos*)
+      if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	allow_undefined_flag=unsupported
+	# Joseph Beckenbach <jrb3@best.com> says some releases of gcc
+	# support --undefined.  This deserves some investigation.  FIXME
+	archive_cmds='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+      else
+	ld_shlibs=no
+      fi
+      ;;
+
+    cygwin* | mingw* | pw32* | cegcc*)
+      # _LT_TAGVAR(hardcode_libdir_flag_spec, ) is actually meaningless,
+      # as there is no search path for DLLs.
+      hardcode_libdir_flag_spec='-L$libdir'
+      export_dynamic_flag_spec='${wl}--export-all-symbols'
+      allow_undefined_flag=unsupported
+      always_export_symbols=no
+      enable_shared_with_static_runtimes=yes
+      export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1 DATA/'\'' | $SED -e '\''/^[AITW][ ]/s/.*[ ]//'\'' | sort | uniq > $export_symbols'
+
+      if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+        archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+	# If the export-symbols file already is a .def file (1st line
+	# is EXPORTS), use it as is; otherwise, prepend...
+	archive_expsym_cmds='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+	  cp $export_symbols $output_objdir/$soname.def;
+	else
+	  echo EXPORTS > $output_objdir/$soname.def;
+	  cat $export_symbols >> $output_objdir/$soname.def;
+	fi~
+	$CC -shared $output_objdir/$soname.def $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+      else
+	ld_shlibs=no
+      fi
+      ;;
+
+    haiku*)
+      archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+      link_all_deplibs=yes
+      ;;
+
+    interix[3-9]*)
+      hardcode_direct=no
+      hardcode_shlibpath_var=no
+      hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+      export_dynamic_flag_spec='${wl}-E'
+      # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+      # Instead, shared libraries are loaded at an image base (0x10000000 by
+      # default) and relocated if they conflict, which is a slow very memory
+      # consuming and fragmenting process.  To avoid this, we pick a random,
+      # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+      # time.  Moving up from 0x10000000 also allows more sbrk(2) space.
+      archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+      archive_expsym_cmds='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+      ;;
+
+    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
+      tmp_diet=no
+      if test "$host_os" = linux-dietlibc; then
+	case $cc_basename in
+	  diet\ *) tmp_diet=yes;;	# linux-dietlibc with static linking (!diet-dyn)
+	esac
+      fi
+      if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \
+	 && test "$tmp_diet" = no
+      then
+	tmp_addflag=
+	tmp_sharedflag='-shared'
+	case $cc_basename,$host_cpu in
+        pgcc*)				# Portland Group C compiler
+	  whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  tmp_addflag=' $pic_flag'
+	  ;;
+	pgf77* | pgf90* | pgf95* | pgfortran*)
+					# Portland Group f77 and f90 compilers
+	  whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  tmp_addflag=' $pic_flag -Mnomain' ;;
+	ecc*,ia64* | icc*,ia64*)	# Intel C compiler on ia64
+	  tmp_addflag=' -i_dynamic' ;;
+	efc*,ia64* | ifort*,ia64*)	# Intel Fortran compiler on ia64
+	  tmp_addflag=' -i_dynamic -nofor_main' ;;
+	ifc* | ifort*)			# Intel Fortran compiler
+	  tmp_addflag=' -nofor_main' ;;
+	lf95*)				# Lahey Fortran 8.1
+	  whole_archive_flag_spec=
+	  tmp_sharedflag='--shared' ;;
+	xl[cC]* | bgxl[cC]* | mpixl[cC]*) # IBM XL C 8.0 on PPC (deal with xlf below)
+	  tmp_sharedflag='-qmkshrobj'
+	  tmp_addflag= ;;
+	nvcc*)	# Cuda Compiler Driver 2.2
+	  whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  compiler_needs_object=yes
+	  ;;
+	esac
+	case `$CC -V 2>&1 | sed 5q` in
+	*Sun\ C*)			# Sun C 5.9
+	  whole_archive_flag_spec='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  compiler_needs_object=yes
+	  tmp_sharedflag='-G' ;;
+	*Sun\ F*)			# Sun Fortran 8.3
+	  tmp_sharedflag='-G' ;;
+	esac
+	archive_cmds='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+
+        if test "x$supports_anon_versioning" = xyes; then
+          archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~
+	    cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+	    echo "local: *; };" >> $output_objdir/$libname.ver~
+	    $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+        fi
+
+	case $cc_basename in
+	xlf* | bgf* | bgxlf* | mpixlf*)
+	  # IBM XL Fortran 10.1 on PPC cannot create shared libs itself
+	  whole_archive_flag_spec='--whole-archive$convenience --no-whole-archive'
+	  hardcode_libdir_flag_spec=
+	  hardcode_libdir_flag_spec_ld='-rpath $libdir'
+	  archive_cmds='$LD -shared $libobjs $deplibs $compiler_flags -soname $soname -o $lib'
+	  if test "x$supports_anon_versioning" = xyes; then
+	    archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~
+	      cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+	      echo "local: *; };" >> $output_objdir/$libname.ver~
+	      $LD -shared $libobjs $deplibs $compiler_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib'
+	  fi
+	  ;;
+	esac
+      else
+        ld_shlibs=no
+      fi
+      ;;
+
+    netbsd*)
+      if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+	archive_cmds='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
+	wlarc=
+      else
+	archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      fi
+      ;;
+
+    solaris*)
+      if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then
+	ld_shlibs=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: The releases 2.8.* of the GNU linker cannot reliably
+*** create shared libraries on Solaris systems.  Therefore, libtool
+*** is disabling shared libraries support.  We urge you to upgrade GNU
+*** binutils to release 2.9.1 or newer.  Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+      elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      else
+	ld_shlibs=no
+      fi
+      ;;
+
+    sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+      case `$LD -v 2>&1` in
+        *\ [01].* | *\ 2.[0-9].* | *\ 2.1[0-5].*)
+	ld_shlibs=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: Releases of the GNU linker prior to 2.16.91.0.3 can not
+*** reliably create shared libraries on SCO systems.  Therefore, libtool
+*** is disabling shared libraries support.  We urge you to upgrade GNU
+*** binutils to release 2.16.91.0.3 or newer.  Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+	;;
+	*)
+	  # For security reasons, it is highly recommended that you always
+	  # use absolute paths for naming shared libraries, and exclude the
+	  # DT_RUNPATH tag from executables and libraries.  But doing so
+	  # requires that you compile everything twice, which is a pain.
+	  if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	    hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+	    archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	    archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+	  else
+	    ld_shlibs=no
+	  fi
+	;;
+      esac
+      ;;
+
+    sunos4*)
+      archive_cmds='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+      wlarc=
+      hardcode_direct=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    *)
+      if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      else
+	ld_shlibs=no
+      fi
+      ;;
+    esac
+
+    if test "$ld_shlibs" = no; then
+      runpath_var=
+      hardcode_libdir_flag_spec=
+      export_dynamic_flag_spec=
+      whole_archive_flag_spec=
+    fi
+  else
+    # PORTME fill in a description of your system's linker (not GNU ld)
+    case $host_os in
+    aix3*)
+      allow_undefined_flag=unsupported
+      always_export_symbols=yes
+      archive_expsym_cmds='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
+      # Note: this linker hardcodes the directories in LIBPATH if there
+      # are no directories specified by -L.
+      hardcode_minus_L=yes
+      if test "$GCC" = yes && test -z "$lt_prog_compiler_static"; then
+	# Neither direct hardcoding nor static linking is supported with a
+	# broken collect2.
+	hardcode_direct=unsupported
+      fi
+      ;;
+
+    aix[4-9]*)
+      if test "$host_cpu" = ia64; then
+	# On IA64, the linker does run time linking by default, so we don't
+	# have to do anything special.
+	aix_use_runtimelinking=no
+	exp_sym_flag='-Bexport'
+	no_entry_flag=""
+      else
+	# If we're using GNU nm, then we don't want the "-C" option.
+	# -C means demangle to AIX nm, but means don't demangle with GNU nm
+	# Also, AIX nm treats weak defined symbols like other global
+	# defined symbols, whereas GNU nm marks them as "W".
+	if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+	  export_symbols_cmds='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+	else
+	  export_symbols_cmds='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+	fi
+	aix_use_runtimelinking=no
+
+	# Test if we are trying to use run time linking or normal
+	# AIX style linking. If -brtl is somewhere in LDFLAGS, we
+	# need to do runtime linking.
+	case $host_os in aix4.[23]|aix4.[23].*|aix[5-9]*)
+	  for ld_flag in $LDFLAGS; do
+	  if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+	    aix_use_runtimelinking=yes
+	    break
+	  fi
+	  done
+	  ;;
+	esac
+
+	exp_sym_flag='-bexport'
+	no_entry_flag='-bnoentry'
+      fi
+
+      # When large executables or shared objects are built, AIX ld can
+      # have problems creating the table of contents.  If linking a library
+      # or program results in "error TOC overflow" add -mminimal-toc to
+      # CXXFLAGS/CFLAGS for g++/gcc.  In the cases where that is not
+      # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+      archive_cmds=''
+      hardcode_direct=yes
+      hardcode_direct_absolute=yes
+      hardcode_libdir_separator=':'
+      link_all_deplibs=yes
+      file_list_spec='${wl}-f,'
+
+      if test "$GCC" = yes; then
+	case $host_os in aix4.[012]|aix4.[012].*)
+	# We only want to do this on AIX 4.2 and lower, the check
+	# below for broken collect2 doesn't work under 4.3+
+	  collect2name=`${CC} -print-prog-name=collect2`
+	  if test -f "$collect2name" &&
+	   strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+	  then
+	  # We have reworked collect2
+	  :
+	  else
+	  # We have old collect2
+	  hardcode_direct=unsupported
+	  # It fails to find uninstalled libraries when the uninstalled
+	  # path is not listed in the libpath.  Setting hardcode_minus_L
+	  # to unsupported forces relinking
+	  hardcode_minus_L=yes
+	  hardcode_libdir_flag_spec='-L$libdir'
+	  hardcode_libdir_separator=
+	  fi
+	  ;;
+	esac
+	shared_flag='-shared'
+	if test "$aix_use_runtimelinking" = yes; then
+	  shared_flag="$shared_flag "'${wl}-G'
+	fi
+      else
+	# not using gcc
+	if test "$host_cpu" = ia64; then
+	# VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+	# chokes on -Wl,-G. The following line is correct:
+	  shared_flag='-G'
+	else
+	  if test "$aix_use_runtimelinking" = yes; then
+	    shared_flag='${wl}-G'
+	  else
+	    shared_flag='${wl}-bM:SRE'
+	  fi
+	fi
+      fi
+
+      export_dynamic_flag_spec='${wl}-bexpall'
+      # It seems that -bexpall does not export symbols beginning with
+      # underscore (_), so it is better to generate a list of symbols to export.
+      always_export_symbols=yes
+      if test "$aix_use_runtimelinking" = yes; then
+	# Warning - without using the other runtime loading flags (-brtl),
+	# -berok will link without error, but may produce a broken library.
+	allow_undefined_flag='-berok'
+        # Determine the default libpath from the value encoded in an
+        # empty executable.
+        if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+
+lt_aix_libpath_sed='
+    /Import File Strings/,/^$/ {
+	/^0/ {
+	    s/^0  *\(.*\)$/\1/
+	    p
+	}
+    }'
+aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+# Check for a 64-bit object if we didn't find anything.
+if test -z "$aix_libpath"; then
+  aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+fi
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+
+        hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+        archive_expsym_cmds='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+      else
+	if test "$host_cpu" = ia64; then
+	  hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
+	  allow_undefined_flag="-z nodefs"
+	  archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+	else
+	 # Determine the default libpath from the value encoded in an
+	 # empty executable.
+	 if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+
+lt_aix_libpath_sed='
+    /Import File Strings/,/^$/ {
+	/^0/ {
+	    s/^0  *\(.*\)$/\1/
+	    p
+	}
+    }'
+aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+# Check for a 64-bit object if we didn't find anything.
+if test -z "$aix_libpath"; then
+  aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+fi
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+
+	 hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+	  # Warning - without using the other run time loading flags,
+	  # -berok will link without error, but may produce a broken library.
+	  no_undefined_flag=' ${wl}-bernotok'
+	  allow_undefined_flag=' ${wl}-berok'
+	  if test "$with_gnu_ld" = yes; then
+	    # We only use this code for GNU lds that support --whole-archive.
+	    whole_archive_flag_spec='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
+	  else
+	    # Exported symbols can be pulled into shared objects from archives
+	    whole_archive_flag_spec='$convenience'
+	  fi
+	  archive_cmds_need_lc=yes
+	  # This is similar to how AIX traditionally builds its shared libraries.
+	  archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+	fi
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+            archive_expsym_cmds=''
+        ;;
+      m68k)
+            archive_cmds='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+            hardcode_libdir_flag_spec='-L$libdir'
+            hardcode_minus_L=yes
+        ;;
+      esac
+      ;;
+
+    bsdi[45]*)
+      export_dynamic_flag_spec=-rdynamic
+      ;;
+
+    cygwin* | mingw* | pw32* | cegcc*)
+      # When not using gcc, we currently assume that we are using
+      # Microsoft Visual C++.
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      hardcode_libdir_flag_spec=' '
+      allow_undefined_flag=unsupported
+      # Tell ltmain to make .lib files, not .a files.
+      libext=lib
+      # Tell ltmain to make .dll files, not .so files.
+      shrext_cmds=".dll"
+      # FIXME: Setting linknames here is a bad hack.
+      archive_cmds='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames='
+      # The linker will automatically build a .lib file if we build a DLL.
+      old_archive_from_new_cmds='true'
+      # FIXME: Should let the user specify the lib program.
+      old_archive_cmds='lib -OUT:$oldlib$oldobjs$old_deplibs'
+      fix_srcfile_path='`cygpath -w "$srcfile"`'
+      enable_shared_with_static_runtimes=yes
+      ;;
+
+    darwin* | rhapsody*)
+
+
+  archive_cmds_need_lc=no
+  hardcode_direct=no
+  hardcode_automatic=yes
+  hardcode_shlibpath_var=unsupported
+  if test "$lt_cv_ld_force_load" = "yes"; then
+    whole_archive_flag_spec='`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience ${wl}-force_load,$conv\"; done; func_echo_all \"$new_convenience\"`'
+  else
+    whole_archive_flag_spec=''
+  fi
+  link_all_deplibs=yes
+  allow_undefined_flag="$_lt_dar_allow_undefined"
+  case $cc_basename in
+     ifort*) _lt_dar_can_shared=yes ;;
+     *) _lt_dar_can_shared=$GCC ;;
+  esac
+  if test "$_lt_dar_can_shared" = "yes"; then
+    output_verbose_link_cmd=func_echo_all
+    archive_cmds="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}"
+    module_cmds="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dsymutil}"
+    archive_expsym_cmds="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}"
+    module_expsym_cmds="sed -e 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dar_export_syms}${_lt_dsymutil}"
+
+  else
+  ld_shlibs=no
+  fi
+
+      ;;
+
+    dgux*)
+      archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_shlibpath_var=no
+      ;;
+
+    # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
+    # support.  Future versions do this automatically, but an explicit c++rt0.o
+    # does not break anything, and helps significantly (at the cost of a little
+    # extra space).
+    freebsd2.2*)
+      archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    # Unfortunately, older versions of FreeBSD 2 do not have this feature.
+    freebsd2.*)
+      archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
+    freebsd* | dragonfly*)
+      archive_cmds='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    hpux9*)
+      if test "$GCC" = yes; then
+	archive_cmds='$RM $output_objdir/$soname~$CC -shared -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+      else
+	archive_cmds='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+      fi
+      hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+      hardcode_libdir_separator=:
+      hardcode_direct=yes
+
+      # hardcode_minus_L: Not really in the search PATH,
+      # but as the default location of the library.
+      hardcode_minus_L=yes
+      export_dynamic_flag_spec='${wl}-E'
+      ;;
+
+    hpux10*)
+      if test "$GCC" = yes && test "$with_gnu_ld" = no; then
+	archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
+      fi
+      if test "$with_gnu_ld" = no; then
+	hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+	hardcode_libdir_flag_spec_ld='+b $libdir'
+	hardcode_libdir_separator=:
+	hardcode_direct=yes
+	hardcode_direct_absolute=yes
+	export_dynamic_flag_spec='${wl}-E'
+	# hardcode_minus_L: Not really in the search PATH,
+	# but as the default location of the library.
+	hardcode_minus_L=yes
+      fi
+      ;;
+
+    hpux11*)
+      if test "$GCC" = yes && test "$with_gnu_ld" = no; then
+	case $host_cpu in
+	hppa*64*)
+	  archive_cmds='$CC -shared ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	ia64*)
+	  archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	*)
+	  archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	esac
+      else
+	case $host_cpu in
+	hppa*64*)
+	  archive_cmds='$CC -b ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	ia64*)
+	  archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	*)
+
+	  # Older versions of the 11.00 compiler do not understand -b yet
+	  # (HP92453-01 A.11.01.20 doesn't, HP92453-01 B.11.X.35175-35176.GP does)
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $CC understands -b" >&5
+$as_echo_n "checking if $CC understands -b... " >&6; }
+if test "${lt_cv_prog_compiler__b+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler__b=no
+   save_LDFLAGS="$LDFLAGS"
+   LDFLAGS="$LDFLAGS -b"
+   echo "$lt_simple_link_test_code" > conftest.$ac_ext
+   if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
+     # The linker can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     if test -s conftest.err; then
+       # Append any errors to the config.log.
+       cat conftest.err 1>&5
+       $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp
+       $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+       if diff conftest.exp conftest.er2 >/dev/null; then
+         lt_cv_prog_compiler__b=yes
+       fi
+     else
+       lt_cv_prog_compiler__b=yes
+     fi
+   fi
+   $RM -r conftest*
+   LDFLAGS="$save_LDFLAGS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler__b" >&5
+$as_echo "$lt_cv_prog_compiler__b" >&6; }
+
+if test x"$lt_cv_prog_compiler__b" = xyes; then
+    archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+else
+    archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
+fi
+
+	  ;;
+	esac
+      fi
+      if test "$with_gnu_ld" = no; then
+	hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+	hardcode_libdir_separator=:
+
+	case $host_cpu in
+	hppa*64*|ia64*)
+	  hardcode_direct=no
+	  hardcode_shlibpath_var=no
+	  ;;
+	*)
+	  hardcode_direct=yes
+	  hardcode_direct_absolute=yes
+	  export_dynamic_flag_spec='${wl}-E'
+
+	  # hardcode_minus_L: Not really in the search PATH,
+	  # but as the default location of the library.
+	  hardcode_minus_L=yes
+	  ;;
+	esac
+      fi
+      ;;
+
+    irix5* | irix6* | nonstopux*)
+      if test "$GCC" = yes; then
+	archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+	# Try to use the -exported_symbol ld option, if it does not
+	# work, assume that -exports_file does not work either and
+	# implicitly export all symbols.
+        save_LDFLAGS="$LDFLAGS"
+        LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
+        if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo(void) {}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
+
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+        LDFLAGS="$save_LDFLAGS"
+      else
+	archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib'
+      fi
+      archive_cmds_need_lc='no'
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      inherit_rpath=yes
+      link_all_deplibs=yes
+      ;;
+
+    netbsd*)
+      if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+	archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'  # a.out
+      else
+	archive_cmds='$LD -shared -o $lib $libobjs $deplibs $linker_flags'      # ELF
+      fi
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    newsos6)
+      archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      hardcode_direct=yes
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      hardcode_shlibpath_var=no
+      ;;
+
+    *nto* | *qnx*)
+      ;;
+
+    openbsd*)
+      if test -f /usr/libexec/ld.so; then
+	hardcode_direct=yes
+	hardcode_shlibpath_var=no
+	hardcode_direct_absolute=yes
+	if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+	  archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+	  archive_expsym_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags ${wl}-retain-symbols-file,$export_symbols'
+	  hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+	  export_dynamic_flag_spec='${wl}-E'
+	else
+	  case $host_os in
+	   openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*)
+	     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+	     hardcode_libdir_flag_spec='-R$libdir'
+	     ;;
+	   *)
+	     archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+	     hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+	     ;;
+	  esac
+	fi
+      else
+	ld_shlibs=no
+      fi
+      ;;
+
+    os2*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_minus_L=yes
+      allow_undefined_flag=unsupported
+      archive_cmds='$ECHO "LIBRARY $libname INITINSTANCE" > $output_objdir/$libname.def~$ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~echo DATA >> $output_objdir/$libname.def~echo " SINGLE NONSHARED" >> $output_objdir/$libname.def~echo EXPORTS >> $output_objdir/$libname.def~emxexp $libobjs >> $output_objdir/$libname.def~$CC -Zdll -Zcrtdll -o $lib $libobjs $deplibs $compiler_flags $output_objdir/$libname.def'
+      old_archive_from_new_cmds='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
+      ;;
+
+    osf3*)
+      if test "$GCC" = yes; then
+	allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
+	archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+      else
+	allow_undefined_flag=' -expect_unresolved \*'
+	archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+      fi
+      archive_cmds_need_lc='no'
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+
+    osf4* | osf5*)	# as osf3* with the addition of -msym flag
+      if test "$GCC" = yes; then
+	allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
+	archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+	hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      else
+	allow_undefined_flag=' -expect_unresolved \*'
+	archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	archive_expsym_cmds='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~
+	$CC -shared${allow_undefined_flag} ${wl}-input ${wl}$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib~$RM $lib.exp'
+
+	# Both c and cxx compiler support -rpath directly
+	hardcode_libdir_flag_spec='-rpath $libdir'
+      fi
+      archive_cmds_need_lc='no'
+      hardcode_libdir_separator=:
+      ;;
+
+    solaris*)
+      no_undefined_flag=' -z defs'
+      if test "$GCC" = yes; then
+	wlarc='${wl}'
+	archive_cmds='$CC -shared ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+	archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $CC -shared ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+      else
+	case `$CC -V 2>&1` in
+	*"Compilers 5.0"*)
+	  wlarc=''
+	  archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp'
+	  ;;
+	*)
+	  wlarc='${wl}'
+	  archive_cmds='$CC -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $compiler_flags'
+	  archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $CC -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+	  ;;
+	esac
+      fi
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_shlibpath_var=no
+      case $host_os in
+      solaris2.[0-5] | solaris2.[0-5].*) ;;
+      *)
+	# The compiler driver will combine and reorder linker options,
+	# but understands `-z linker_flag'.  GCC discards it without `$wl',
+	# but is careful enough not to reorder.
+	# Supported since Solaris 2.6 (maybe 2.5.1?)
+	if test "$GCC" = yes; then
+	  whole_archive_flag_spec='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+	else
+	  whole_archive_flag_spec='-z allextract$convenience -z defaultextract'
+	fi
+	;;
+      esac
+      link_all_deplibs=yes
+      ;;
+
+    sunos4*)
+      if test "x$host_vendor" = xsequent; then
+	# Use $CC to link under sequent, because it throws in some extra .o
+	# files that make .init and .fini sections work.
+	archive_cmds='$CC -G ${wl}-h $soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	archive_cmds='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
+      fi
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    sysv4)
+      case $host_vendor in
+	sni)
+	  archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  hardcode_direct=yes # is this really true???
+	;;
+	siemens)
+	  ## LD is ld it makes a PLAMLIB
+	  ## CC just makes a GrossModule.
+	  archive_cmds='$LD -G -o $lib $libobjs $deplibs $linker_flags'
+	  reload_cmds='$CC -r -o $output$reload_objs'
+	  hardcode_direct=no
+        ;;
+	motorola)
+	  archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  hardcode_direct=no #Motorola manual says yes, but my tests say they lie
+	;;
+      esac
+      runpath_var='LD_RUN_PATH'
+      hardcode_shlibpath_var=no
+      ;;
+
+    sysv4.3*)
+      archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      hardcode_shlibpath_var=no
+      export_dynamic_flag_spec='-Bexport'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec; then
+	archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	hardcode_shlibpath_var=no
+	runpath_var=LD_RUN_PATH
+	hardcode_runpath_var=yes
+	ld_shlibs=yes
+      fi
+      ;;
+
+    sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[01].[10]* | unixware7* | sco3.2v5.0.[024]*)
+      no_undefined_flag='${wl}-z,text'
+      archive_cmds_need_lc=no
+      hardcode_shlibpath_var=no
+      runpath_var='LD_RUN_PATH'
+
+      if test "$GCC" = yes; then
+	archive_cmds='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	archive_expsym_cmds='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	archive_cmds='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	archive_expsym_cmds='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      fi
+      ;;
+
+    sysv5* | sco3.2v5* | sco5v6*)
+      # Note: We can NOT use -z defs as we might desire, because we do not
+      # link with -lc, and that would cause any symbols used from libc to
+      # always be unresolved, which means just about no library would
+      # ever link correctly.  If we're not using GNU ld we use -z text
+      # though, which does catch some bad symbols but isn't as heavy-handed
+      # as -z defs.
+      no_undefined_flag='${wl}-z,text'
+      allow_undefined_flag='${wl}-z,nodefs'
+      archive_cmds_need_lc=no
+      hardcode_shlibpath_var=no
+      hardcode_libdir_flag_spec='${wl}-R,$libdir'
+      hardcode_libdir_separator=':'
+      link_all_deplibs=yes
+      export_dynamic_flag_spec='${wl}-Bexport'
+      runpath_var='LD_RUN_PATH'
+
+      if test "$GCC" = yes; then
+	archive_cmds='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	archive_expsym_cmds='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	archive_cmds='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	archive_expsym_cmds='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      fi
+      ;;
+
+    uts4*)
+      archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_shlibpath_var=no
+      ;;
+
+    *)
+      ld_shlibs=no
+      ;;
+    esac
+
+    if test x$host_vendor = xsni; then
+      case $host in
+      sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+	export_dynamic_flag_spec='${wl}-Blargedynsym'
+	;;
+      esac
+    fi
+  fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ld_shlibs" >&5
+$as_echo "$ld_shlibs" >&6; }
+test "$ld_shlibs" = no && can_build_shared=no
+
+with_gnu_ld=$with_gnu_ld
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+#
+# Do we need to explicitly link libc?
+#
+case "x$archive_cmds_need_lc" in
+x|xyes)
+  # Assume -lc should be added
+  archive_cmds_need_lc=yes
+
+  if test "$enable_shared" = yes && test "$GCC" = yes; then
+    case $archive_cmds in
+    *'~'*)
+      # FIXME: we may have to deal with multi-command sequences.
+      ;;
+    '$CC '*)
+      # Test whether the compiler implicitly links with -lc since on some
+      # systems, -lgcc has to come before -lc. If gcc already passes -lc
+      # to ld, don't add -lc before -lgcc.
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether -lc should be explicitly linked in" >&5
+$as_echo_n "checking whether -lc should be explicitly linked in... " >&6; }
+if test "${lt_cv_archive_cmds_need_lc+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  $RM conftest*
+	echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+	if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } 2>conftest.err; then
+	  soname=conftest
+	  lib=conftest
+	  libobjs=conftest.$ac_objext
+	  deplibs=
+	  wl=$lt_prog_compiler_wl
+	  pic_flag=$lt_prog_compiler_pic
+	  compiler_flags=-v
+	  linker_flags=-v
+	  verstring=
+	  output_objdir=.
+	  libname=conftest
+	  lt_save_allow_undefined_flag=$allow_undefined_flag
+	  allow_undefined_flag=
+	  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$archive_cmds 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1\""; } >&5
+  (eval $archive_cmds 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+	  then
+	    lt_cv_archive_cmds_need_lc=no
+	  else
+	    lt_cv_archive_cmds_need_lc=yes
+	  fi
+	  allow_undefined_flag=$lt_save_allow_undefined_flag
+	else
+	  cat conftest.err 1>&5
+	fi
+	$RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_archive_cmds_need_lc" >&5
+$as_echo "$lt_cv_archive_cmds_need_lc" >&6; }
+      archive_cmds_need_lc=$lt_cv_archive_cmds_need_lc
+      ;;
+    esac
+  fi
+  ;;
+esac
+
+
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+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking dynamic linker characteristics" >&5
+$as_echo_n "checking dynamic linker characteristics... " >&6; }
+
+if test "$GCC" = yes; then
+  case $host_os in
+    darwin*) lt_awk_arg="/^libraries:/,/LR/" ;;
+    *) lt_awk_arg="/^libraries:/" ;;
+  esac
+  case $host_os in
+    mingw* | cegcc*) lt_sed_strip_eq="s,=\([A-Za-z]:\),\1,g" ;;
+    *) lt_sed_strip_eq="s,=/,/,g" ;;
+  esac
+  lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e $lt_sed_strip_eq`
+  case $lt_search_path_spec in
+  *\;*)
+    # if the path contains ";" then we assume it to be the separator
+    # otherwise default to the standard path separator (i.e. ":") - it is
+    # assumed that no part of a normal pathname contains ";" but that should
+    # okay in the real world where ";" in dirpaths is itself problematic.
+    lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED 's/;/ /g'`
+    ;;
+  *)
+    lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED "s/$PATH_SEPARATOR/ /g"`
+    ;;
+  esac
+  # Ok, now we have the path, separated by spaces, we can step through it
+  # and add multilib dir if necessary.
+  lt_tmp_lt_search_path_spec=
+  lt_multi_os_dir=`$CC $CPPFLAGS $CFLAGS $LDFLAGS -print-multi-os-directory 2>/dev/null`
+  for lt_sys_path in $lt_search_path_spec; do
+    if test -d "$lt_sys_path/$lt_multi_os_dir"; then
+      lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path/$lt_multi_os_dir"
+    else
+      test -d "$lt_sys_path" && \
+	lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path"
+    fi
+  done
+  lt_search_path_spec=`$ECHO "$lt_tmp_lt_search_path_spec" | awk '
+BEGIN {RS=" "; FS="/|\n";} {
+  lt_foo="";
+  lt_count=0;
+  for (lt_i = NF; lt_i > 0; lt_i--) {
+    if ($lt_i != "" && $lt_i != ".") {
+      if ($lt_i == "..") {
+        lt_count++;
+      } else {
+        if (lt_count == 0) {
+          lt_foo="/" $lt_i lt_foo;
+        } else {
+          lt_count--;
+        }
+      }
+    }
+  }
+  if (lt_foo != "") { lt_freq[lt_foo]++; }
+  if (lt_freq[lt_foo] == 1) { print lt_foo; }
+}'`
+  # AWK program above erroneously prepends '/' to C:/dos/paths
+  # for these hosts.
+  case $host_os in
+    mingw* | cegcc*) lt_search_path_spec=`$ECHO "$lt_search_path_spec" |\
+      $SED 's,/\([A-Za-z]:\),\1,g'` ;;
+  esac
+  sys_lib_search_path_spec=`$ECHO "$lt_search_path_spec" | $lt_NL2SP`
+else
+  sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
+fi
+library_names_spec=
+libname_spec='lib$name'
+soname_spec=
+shrext_cmds=".so"
+postinstall_cmds=
+postuninstall_cmds=
+finish_cmds=
+finish_eval=
+shlibpath_var=
+shlibpath_overrides_runpath=unknown
+version_type=none
+dynamic_linker="$host_os ld.so"
+sys_lib_dlsearch_path_spec="/lib /usr/lib"
+need_lib_prefix=unknown
+hardcode_into_libs=no
+
+# when you set need_version to no, make sure it does not cause -set_version
+# flags to be left without arguments
+need_version=unknown
+
+case $host_os in
+aix3*)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
+  shlibpath_var=LIBPATH
+
+  # AIX 3 has no versioning support, so we append a major version to the name.
+  soname_spec='${libname}${release}${shared_ext}$major'
+  ;;
+
+aix[4-9]*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  hardcode_into_libs=yes
+  if test "$host_cpu" = ia64; then
+    # AIX 5 supports IA64
+    library_names_spec='${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext}$versuffix $libname${shared_ext}'
+    shlibpath_var=LD_LIBRARY_PATH
+  else
+    # With GCC up to 2.95.x, collect2 would create an import file
+    # for dependence libraries.  The import file would start with
+    # the line `#! .'.  This would cause the generated library to
+    # depend on `.', always an invalid library.  This was fixed in
+    # development snapshots of GCC prior to 3.0.
+    case $host_os in
+      aix4 | aix4.[01] | aix4.[01].*)
+      if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)'
+	   echo ' yes '
+	   echo '#endif'; } | ${CC} -E - | $GREP yes > /dev/null; then
+	:
+      else
+	can_build_shared=no
+      fi
+      ;;
+    esac
+    # AIX (on Power*) has no versioning support, so currently we can not hardcode correct
+    # soname into executable. Probably we can add versioning support to
+    # collect2, so additional links can be useful in future.
+    if test "$aix_use_runtimelinking" = yes; then
+      # If using run time linking (on AIX 4.2 or later) use lib<name>.so
+      # instead of lib<name>.a to let people know that these are not
+      # typical AIX shared libraries.
+      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    else
+      # We preserve .a as extension for shared libraries through AIX4.2
+      # and later when we are not doing run time linking.
+      library_names_spec='${libname}${release}.a $libname.a'
+      soname_spec='${libname}${release}${shared_ext}$major'
+    fi
+    shlibpath_var=LIBPATH
+  fi
+  ;;
+
+amigaos*)
+  case $host_cpu in
+  powerpc)
+    # Since July 2007 AmigaOS4 officially supports .so libraries.
+    # When compiling the executable, add -use-dynld -Lsobjs: to the compileline.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    ;;
+  m68k)
+    library_names_spec='$libname.ixlibrary $libname.a'
+    # Create ${libname}_ixlibrary.a entries in /sys/libs.
+    finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`func_echo_all "$lib" | $SED '\''s%^.*/\([^/]*\)\.ixlibrary$%\1%'\''`; test $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done'
+    ;;
+  esac
+  ;;
+
+beos*)
+  library_names_spec='${libname}${shared_ext}'
+  dynamic_linker="$host_os ld.so"
+  shlibpath_var=LIBRARY_PATH
+  ;;
+
+bsdi[45]*)
+  version_type=linux
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
+  sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
+  # the default ld.so.conf also contains /usr/contrib/lib and
+  # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow
+  # libtool to hard-code these into programs
+  ;;
+
+cygwin* | mingw* | pw32* | cegcc*)
+  version_type=windows
+  shrext_cmds=".dll"
+  need_version=no
+  need_lib_prefix=no
+
+  case $GCC,$host_os in
+  yes,cygwin* | yes,mingw* | yes,pw32* | yes,cegcc*)
+    library_names_spec='$libname.dll.a'
+    # DLL is installed to $(libdir)/../bin by postinstall_cmds
+    postinstall_cmds='base_file=`basename \${file}`~
+      dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
+      dldir=$destdir/`dirname \$dlpath`~
+      test -d \$dldir || mkdir -p \$dldir~
+      $install_prog $dir/$dlname \$dldir/$dlname~
+      chmod a+x \$dldir/$dlname~
+      if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then
+        eval '\''$striplib \$dldir/$dlname'\'' || exit \$?;
+      fi'
+    postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
+      dlpath=$dir/\$dldll~
+       $RM \$dlpath'
+    shlibpath_overrides_runpath=yes
+
+    case $host_os in
+    cygwin*)
+      # Cygwin DLLs use 'cyg' prefix rather than 'lib'
+      soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+
+      sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"
+      ;;
+    mingw* | cegcc*)
+      # MinGW DLLs use traditional 'lib' prefix
+      soname_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+      ;;
+    pw32*)
+      # pw32 DLLs use 'pw' prefix rather than 'lib'
+      library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+      ;;
+    esac
+    ;;
+
+  *)
+    library_names_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext} $libname.lib'
+    ;;
+  esac
+  dynamic_linker='Win32 ld.exe'
+  # FIXME: first we should search . and the directory the executable is in
+  shlibpath_var=PATH
+  ;;
+
+darwin* | rhapsody*)
+  dynamic_linker="$host_os dyld"
+  version_type=darwin
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${major}$shared_ext ${libname}$shared_ext'
+  soname_spec='${libname}${release}${major}$shared_ext'
+  shlibpath_overrides_runpath=yes
+  shlibpath_var=DYLD_LIBRARY_PATH
+  shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`'
+
+  sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib"
+  sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib'
+  ;;
+
+dgux*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  ;;
+
+freebsd* | dragonfly*)
+  # DragonFly does not have aout.  When/if they implement a new
+  # versioning mechanism, adjust this.
+  if test -x /usr/bin/objformat; then
+    objformat=`/usr/bin/objformat`
+  else
+    case $host_os in
+    freebsd[23].*) objformat=aout ;;
+    *) objformat=elf ;;
+    esac
+  fi
+  version_type=freebsd-$objformat
+  case $version_type in
+    freebsd-elf*)
+      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+      need_version=no
+      need_lib_prefix=no
+      ;;
+    freebsd-*)
+      library_names_spec='${libname}${release}${shared_ext}$versuffix $libname${shared_ext}$versuffix'
+      need_version=yes
+      ;;
+  esac
+  shlibpath_var=LD_LIBRARY_PATH
+  case $host_os in
+  freebsd2.*)
+    shlibpath_overrides_runpath=yes
+    ;;
+  freebsd3.[01]* | freebsdelf3.[01]*)
+    shlibpath_overrides_runpath=yes
+    hardcode_into_libs=yes
+    ;;
+  freebsd3.[2-9]* | freebsdelf3.[2-9]* | \
+  freebsd4.[0-5] | freebsdelf4.[0-5] | freebsd4.1.1 | freebsdelf4.1.1)
+    shlibpath_overrides_runpath=no
+    hardcode_into_libs=yes
+    ;;
+  *) # from 4.6 on, and DragonFly
+    shlibpath_overrides_runpath=yes
+    hardcode_into_libs=yes
+    ;;
+  esac
+  ;;
+
+gnu*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  hardcode_into_libs=yes
+  ;;
+
+haiku*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  dynamic_linker="$host_os runtime_loader"
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  sys_lib_dlsearch_path_spec='/boot/home/config/lib /boot/common/lib /boot/beos/system/lib'
+  hardcode_into_libs=yes
+  ;;
+
+hpux9* | hpux10* | hpux11*)
+  # Give a soname corresponding to the major version so that dld.sl refuses to
+  # link against other versions.
+  version_type=sunos
+  need_lib_prefix=no
+  need_version=no
+  case $host_cpu in
+  ia64*)
+    shrext_cmds='.so'
+    hardcode_into_libs=yes
+    dynamic_linker="$host_os dld.so"
+    shlibpath_var=LD_LIBRARY_PATH
+    shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    if test "X$HPUX_IA64_MODE" = X32; then
+      sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib"
+    else
+      sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64"
+    fi
+    sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+    ;;
+  hppa*64*)
+    shrext_cmds='.sl'
+    hardcode_into_libs=yes
+    dynamic_linker="$host_os dld.sl"
+    shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH
+    shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64"
+    sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+    ;;
+  *)
+    shrext_cmds='.sl'
+    dynamic_linker="$host_os dld.sl"
+    shlibpath_var=SHLIB_PATH
+    shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    ;;
+  esac
+  # HP-UX runs *really* slowly unless shared libraries are mode 555, ...
+  postinstall_cmds='chmod 555 $lib'
+  # or fails outright, so override atomically:
+  install_override_mode=555
+  ;;
+
+interix[3-9]*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  ;;
+
+irix5* | irix6* | nonstopux*)
+  case $host_os in
+    nonstopux*) version_type=nonstopux ;;
+    *)
+	if test "$lt_cv_prog_gnu_ld" = yes; then
+		version_type=linux
+	else
+		version_type=irix
+	fi ;;
+  esac
+  need_lib_prefix=no
+  need_version=no
+  soname_spec='${libname}${release}${shared_ext}$major'
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext} $libname${shared_ext}'
+  case $host_os in
+  irix5* | nonstopux*)
+    libsuff= shlibsuff=
+    ;;
+  *)
+    case $LD in # libtool.m4 will add one of these switches to LD
+    *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ")
+      libsuff= shlibsuff= libmagic=32-bit;;
+    *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ")
+      libsuff=32 shlibsuff=N32 libmagic=N32;;
+    *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ")
+      libsuff=64 shlibsuff=64 libmagic=64-bit;;
+    *) libsuff= shlibsuff= libmagic=never-match;;
+    esac
+    ;;
+  esac
+  shlibpath_var=LD_LIBRARY${shlibsuff}_PATH
+  shlibpath_overrides_runpath=no
+  sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
+  sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
+  hardcode_into_libs=yes
+  ;;
+
+# No shared lib support for Linux oldld, aout, or coff.
+linux*oldld* | linux*aout* | linux*coff*)
+  dynamic_linker=no
+  ;;
+
+# This must be Linux ELF.
+linux* | k*bsd*-gnu | kopensolaris*-gnu)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+
+  # Some binutils ld are patched to set DT_RUNPATH
+  if test "${lt_cv_shlibpath_overrides_runpath+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_shlibpath_overrides_runpath=no
+    save_LDFLAGS=$LDFLAGS
+    save_libdir=$libdir
+    eval "libdir=/foo; wl=\"$lt_prog_compiler_wl\"; \
+	 LDFLAGS=\"\$LDFLAGS $hardcode_libdir_flag_spec\""
+    if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  if  ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null; then :
+  lt_cv_shlibpath_overrides_runpath=yes
+fi
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+    LDFLAGS=$save_LDFLAGS
+    libdir=$save_libdir
+
+fi
+
+  shlibpath_overrides_runpath=$lt_cv_shlibpath_overrides_runpath
+
+  # This implies no fast_install, which is unacceptable.
+  # Some rework will be needed to allow for fast_install
+  # before this can be enabled.
+  hardcode_into_libs=yes
+
+  # Append ld.so.conf contents to the search path
+  if test -f /etc/ld.so.conf; then
+    lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \$2)); skip = 1; } { if (!skip) print \$0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[	 ]*hwcap[	 ]/d;s/[:,	]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;s/"//g;/^$/d' | tr '\n' ' '`
+    sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
+  fi
+
+  # We used to test for /lib/ld.so.1 and disable shared libraries on
+  # powerpc, because MkLinux only supported shared libraries with the
+  # GNU dynamic linker.  Since this was broken with cross compilers,
+  # most powerpc-linux boxes support dynamic linking these days and
+  # people can always --disable-shared, the test was removed, and we
+  # assume the GNU/Linux dynamic linker is in use.
+  dynamic_linker='GNU/Linux ld.so'
+  ;;
+
+netbsd*)
+  version_type=sunos
+  need_lib_prefix=no
+  need_version=no
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+    finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+    dynamic_linker='NetBSD (a.out) ld.so'
+  else
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    dynamic_linker='NetBSD ld.elf_so'
+  fi
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  ;;
+
+newsos6)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  ;;
+
+*nto* | *qnx*)
+  version_type=qnx
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  dynamic_linker='ldqnx.so'
+  ;;
+
+openbsd*)
+  version_type=sunos
+  sys_lib_dlsearch_path_spec="/usr/lib"
+  need_lib_prefix=no
+  # Some older versions of OpenBSD (3.3 at least) *do* need versioned libs.
+  case $host_os in
+    openbsd3.3 | openbsd3.3.*)	need_version=yes ;;
+    *)				need_version=no  ;;
+  esac
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+    case $host_os in
+      openbsd2.[89] | openbsd2.[89].*)
+	shlibpath_overrides_runpath=no
+	;;
+      *)
+	shlibpath_overrides_runpath=yes
+	;;
+      esac
+  else
+    shlibpath_overrides_runpath=yes
+  fi
+  ;;
+
+os2*)
+  libname_spec='$name'
+  shrext_cmds=".dll"
+  need_lib_prefix=no
+  library_names_spec='$libname${shared_ext} $libname.a'
+  dynamic_linker='OS/2 ld.exe'
+  shlibpath_var=LIBPATH
+  ;;
+
+osf3* | osf4* | osf5*)
+  version_type=osf
+  need_lib_prefix=no
+  need_version=no
+  soname_spec='${libname}${release}${shared_ext}$major'
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
+  sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
+  ;;
+
+rdos*)
+  dynamic_linker=no
+  ;;
+
+solaris*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  # ldd complains unless libraries are executable
+  postinstall_cmds='chmod +x $lib'
+  ;;
+
+sunos4*)
+  version_type=sunos
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+  finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  if test "$with_gnu_ld" = yes; then
+    need_lib_prefix=no
+  fi
+  need_version=yes
+  ;;
+
+sysv4 | sysv4.3*)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  case $host_vendor in
+    sni)
+      shlibpath_overrides_runpath=no
+      need_lib_prefix=no
+      runpath_var=LD_RUN_PATH
+      ;;
+    siemens)
+      need_lib_prefix=no
+      ;;
+    motorola)
+      need_lib_prefix=no
+      need_version=no
+      shlibpath_overrides_runpath=no
+      sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
+      ;;
+  esac
+  ;;
+
+sysv4*MP*)
+  if test -d /usr/nec ;then
+    version_type=linux
+    library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
+    soname_spec='$libname${shared_ext}.$major'
+    shlibpath_var=LD_LIBRARY_PATH
+  fi
+  ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+  version_type=freebsd-elf
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  if test "$with_gnu_ld" = yes; then
+    sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib'
+  else
+    sys_lib_search_path_spec='/usr/ccs/lib /usr/lib'
+    case $host_os in
+      sco3.2v5*)
+        sys_lib_search_path_spec="$sys_lib_search_path_spec /lib"
+	;;
+    esac
+  fi
+  sys_lib_dlsearch_path_spec='/usr/lib'
+  ;;
+
+tpf*)
+  # TPF is a cross-target only.  Preferred cross-host = GNU/Linux.
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  ;;
+
+uts4*)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  ;;
+
+*)
+  dynamic_linker=no
+  ;;
+esac
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $dynamic_linker" >&5
+$as_echo "$dynamic_linker" >&6; }
+test "$dynamic_linker" = no && can_build_shared=no
+
+variables_saved_for_relink="PATH $shlibpath_var $runpath_var"
+if test "$GCC" = yes; then
+  variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH"
+fi
+
+if test "${lt_cv_sys_lib_search_path_spec+set}" = set; then
+  sys_lib_search_path_spec="$lt_cv_sys_lib_search_path_spec"
+fi
+if test "${lt_cv_sys_lib_dlsearch_path_spec+set}" = set; then
+  sys_lib_dlsearch_path_spec="$lt_cv_sys_lib_dlsearch_path_spec"
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to hardcode library paths into programs" >&5
+$as_echo_n "checking how to hardcode library paths into programs... " >&6; }
+hardcode_action=
+if test -n "$hardcode_libdir_flag_spec" ||
+   test -n "$runpath_var" ||
+   test "X$hardcode_automatic" = "Xyes" ; then
+
+  # We can hardcode non-existent directories.
+  if test "$hardcode_direct" != no &&
+     # If the only mechanism to avoid hardcoding is shlibpath_var, we
+     # have to relink, otherwise we might link with an installed library
+     # when we should be linking with a yet-to-be-installed one
+     ## test "$_LT_TAGVAR(hardcode_shlibpath_var, )" != no &&
+     test "$hardcode_minus_L" != no; then
+    # Linking always hardcodes the temporary library directory.
+    hardcode_action=relink
+  else
+    # We can link without hardcoding, and we can hardcode nonexisting dirs.
+    hardcode_action=immediate
+  fi
+else
+  # We cannot hardcode anything, or else we can only hardcode existing
+  # directories.
+  hardcode_action=unsupported
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $hardcode_action" >&5
+$as_echo "$hardcode_action" >&6; }
+
+if test "$hardcode_action" = relink ||
+   test "$inherit_rpath" = yes; then
+  # Fast installation is not supported
+  enable_fast_install=no
+elif test "$shlibpath_overrides_runpath" = yes ||
+     test "$enable_shared" = no; then
+  # Fast installation is not necessary
+  enable_fast_install=needless
+fi
+
+
+
+
+
+
+  if test "x$enable_dlopen" != xyes; then
+  enable_dlopen=unknown
+  enable_dlopen_self=unknown
+  enable_dlopen_self_static=unknown
+else
+  lt_cv_dlopen=no
+  lt_cv_dlopen_libs=
+
+  case $host_os in
+  beos*)
+    lt_cv_dlopen="load_add_on"
+    lt_cv_dlopen_libs=
+    lt_cv_dlopen_self=yes
+    ;;
+
+  mingw* | pw32* | cegcc*)
+    lt_cv_dlopen="LoadLibrary"
+    lt_cv_dlopen_libs=
+    ;;
+
+  cygwin*)
+    lt_cv_dlopen="dlopen"
+    lt_cv_dlopen_libs=
+    ;;
+
+  darwin*)
+  # if libdl is installed we need to link against it
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
+$as_echo_n "checking for dlopen in -ldl... " >&6; }
+if test "${ac_cv_lib_dl_dlopen+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldl  $LIBS"
+if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_dl_dlopen=yes
+else
+  ac_cv_lib_dl_dlopen=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
+$as_echo "$ac_cv_lib_dl_dlopen" >&6; }
+if test "x$ac_cv_lib_dl_dlopen" = x""yes; then :
+  lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"
+else
+
+    lt_cv_dlopen="dyld"
+    lt_cv_dlopen_libs=
+    lt_cv_dlopen_self=yes
+
+fi
+
+    ;;
+
+  *)
+    ac_fn_c_check_func "$LINENO" "shl_load" "ac_cv_func_shl_load"
+if test "x$ac_cv_func_shl_load" = x""yes; then :
+  lt_cv_dlopen="shl_load"
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for shl_load in -ldld" >&5
+$as_echo_n "checking for shl_load in -ldld... " >&6; }
+if test "${ac_cv_lib_dld_shl_load+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldld  $LIBS"
+if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char shl_load ();
+int
+main ()
+{
+return shl_load ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_dld_shl_load=yes
+else
+  ac_cv_lib_dld_shl_load=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_shl_load" >&5
+$as_echo "$ac_cv_lib_dld_shl_load" >&6; }
+if test "x$ac_cv_lib_dld_shl_load" = x""yes; then :
+  lt_cv_dlopen="shl_load" lt_cv_dlopen_libs="-ldld"
+else
+  ac_fn_c_check_func "$LINENO" "dlopen" "ac_cv_func_dlopen"
+if test "x$ac_cv_func_dlopen" = x""yes; then :
+  lt_cv_dlopen="dlopen"
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
+$as_echo_n "checking for dlopen in -ldl... " >&6; }
+if test "${ac_cv_lib_dl_dlopen+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldl  $LIBS"
+if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_dl_dlopen=yes
+else
+  ac_cv_lib_dl_dlopen=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
+$as_echo "$ac_cv_lib_dl_dlopen" >&6; }
+if test "x$ac_cv_lib_dl_dlopen" = x""yes; then :
+  lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -lsvld" >&5
+$as_echo_n "checking for dlopen in -lsvld... " >&6; }
+if test "${ac_cv_lib_svld_dlopen+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lsvld  $LIBS"
+if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_svld_dlopen=yes
+else
+  ac_cv_lib_svld_dlopen=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_svld_dlopen" >&5
+$as_echo "$ac_cv_lib_svld_dlopen" >&6; }
+if test "x$ac_cv_lib_svld_dlopen" = x""yes; then :
+  lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dld_link in -ldld" >&5
+$as_echo_n "checking for dld_link in -ldld... " >&6; }
+if test "${ac_cv_lib_dld_dld_link+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldld  $LIBS"
+if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dld_link ();
+int
+main ()
+{
+return dld_link ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_dld_dld_link=yes
+else
+  ac_cv_lib_dld_dld_link=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_dld_link" >&5
+$as_echo "$ac_cv_lib_dld_dld_link" >&6; }
+if test "x$ac_cv_lib_dld_dld_link" = x""yes; then :
+  lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-ldld"
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+    ;;
+  esac
+
+  if test "x$lt_cv_dlopen" != xno; then
+    enable_dlopen=yes
+  else
+    enable_dlopen=no
+  fi
+
+  case $lt_cv_dlopen in
+  dlopen)
+    save_CPPFLAGS="$CPPFLAGS"
+    test "x$ac_cv_header_dlfcn_h" = xyes && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H"
+
+    save_LDFLAGS="$LDFLAGS"
+    wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\"
+
+    save_LIBS="$LIBS"
+    LIBS="$lt_cv_dlopen_libs $LIBS"
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a program can dlopen itself" >&5
+$as_echo_n "checking whether a program can dlopen itself... " >&6; }
+if test "${lt_cv_dlopen_self+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  	  if test "$cross_compiling" = yes; then :
+  lt_cv_dlopen_self=cross
+else
+  lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+  lt_status=$lt_dlunknown
+  cat > conftest.$ac_ext <<_LT_EOF
+#line 10586 "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <stdio.h>
+
+#ifdef RTLD_GLOBAL
+#  define LT_DLGLOBAL		RTLD_GLOBAL
+#else
+#  ifdef DL_GLOBAL
+#    define LT_DLGLOBAL		DL_GLOBAL
+#  else
+#    define LT_DLGLOBAL		0
+#  endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+   find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+#  ifdef RTLD_LAZY
+#    define LT_DLLAZY_OR_NOW		RTLD_LAZY
+#  else
+#    ifdef DL_LAZY
+#      define LT_DLLAZY_OR_NOW		DL_LAZY
+#    else
+#      ifdef RTLD_NOW
+#        define LT_DLLAZY_OR_NOW	RTLD_NOW
+#      else
+#        ifdef DL_NOW
+#          define LT_DLLAZY_OR_NOW	DL_NOW
+#        else
+#          define LT_DLLAZY_OR_NOW	0
+#        endif
+#      endif
+#    endif
+#  endif
+#endif
+
+/* When -fvisbility=hidden is used, assume the code has been annotated
+   correspondingly for the symbols needed.  */
+#if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
+void fnord () __attribute__((visibility("default")));
+#endif
+
+void fnord () { int i=42; }
+int main ()
+{
+  void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+  int status = $lt_dlunknown;
+
+  if (self)
+    {
+      if (dlsym (self,"fnord"))       status = $lt_dlno_uscore;
+      else
+        {
+	  if (dlsym( self,"_fnord"))  status = $lt_dlneed_uscore;
+          else puts (dlerror ());
+	}
+      /* dlclose (self); */
+    }
+  else
+    puts (dlerror ());
+
+  return status;
+}
+_LT_EOF
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest${ac_exeext} 2>/dev/null; then
+    (./conftest; exit; ) >&5 2>/dev/null
+    lt_status=$?
+    case x$lt_status in
+      x$lt_dlno_uscore) lt_cv_dlopen_self=yes ;;
+      x$lt_dlneed_uscore) lt_cv_dlopen_self=yes ;;
+      x$lt_dlunknown|x*) lt_cv_dlopen_self=no ;;
+    esac
+  else :
+    # compilation failed
+    lt_cv_dlopen_self=no
+  fi
+fi
+rm -fr conftest*
+
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self" >&5
+$as_echo "$lt_cv_dlopen_self" >&6; }
+
+    if test "x$lt_cv_dlopen_self" = xyes; then
+      wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a statically linked program can dlopen itself" >&5
+$as_echo_n "checking whether a statically linked program can dlopen itself... " >&6; }
+if test "${lt_cv_dlopen_self_static+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  	  if test "$cross_compiling" = yes; then :
+  lt_cv_dlopen_self_static=cross
+else
+  lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+  lt_status=$lt_dlunknown
+  cat > conftest.$ac_ext <<_LT_EOF
+#line 10692 "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <stdio.h>
+
+#ifdef RTLD_GLOBAL
+#  define LT_DLGLOBAL		RTLD_GLOBAL
+#else
+#  ifdef DL_GLOBAL
+#    define LT_DLGLOBAL		DL_GLOBAL
+#  else
+#    define LT_DLGLOBAL		0
+#  endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+   find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+#  ifdef RTLD_LAZY
+#    define LT_DLLAZY_OR_NOW		RTLD_LAZY
+#  else
+#    ifdef DL_LAZY
+#      define LT_DLLAZY_OR_NOW		DL_LAZY
+#    else
+#      ifdef RTLD_NOW
+#        define LT_DLLAZY_OR_NOW	RTLD_NOW
+#      else
+#        ifdef DL_NOW
+#          define LT_DLLAZY_OR_NOW	DL_NOW
+#        else
+#          define LT_DLLAZY_OR_NOW	0
+#        endif
+#      endif
+#    endif
+#  endif
+#endif
+
+/* When -fvisbility=hidden is used, assume the code has been annotated
+   correspondingly for the symbols needed.  */
+#if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
+void fnord () __attribute__((visibility("default")));
+#endif
+
+void fnord () { int i=42; }
+int main ()
+{
+  void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+  int status = $lt_dlunknown;
+
+  if (self)
+    {
+      if (dlsym (self,"fnord"))       status = $lt_dlno_uscore;
+      else
+        {
+	  if (dlsym( self,"_fnord"))  status = $lt_dlneed_uscore;
+          else puts (dlerror ());
+	}
+      /* dlclose (self); */
+    }
+  else
+    puts (dlerror ());
+
+  return status;
+}
+_LT_EOF
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest${ac_exeext} 2>/dev/null; then
+    (./conftest; exit; ) >&5 2>/dev/null
+    lt_status=$?
+    case x$lt_status in
+      x$lt_dlno_uscore) lt_cv_dlopen_self_static=yes ;;
+      x$lt_dlneed_uscore) lt_cv_dlopen_self_static=yes ;;
+      x$lt_dlunknown|x*) lt_cv_dlopen_self_static=no ;;
+    esac
+  else :
+    # compilation failed
+    lt_cv_dlopen_self_static=no
+  fi
+fi
+rm -fr conftest*
+
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self_static" >&5
+$as_echo "$lt_cv_dlopen_self_static" >&6; }
+    fi
+
+    CPPFLAGS="$save_CPPFLAGS"
+    LDFLAGS="$save_LDFLAGS"
+    LIBS="$save_LIBS"
+    ;;
+  esac
+
+  case $lt_cv_dlopen_self in
+  yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;;
+  *) enable_dlopen_self=unknown ;;
+  esac
+
+  case $lt_cv_dlopen_self_static in
+  yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;;
+  *) enable_dlopen_self_static=unknown ;;
+  esac
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+striplib=
+old_striplib=
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether stripping libraries is possible" >&5
+$as_echo_n "checking whether stripping libraries is possible... " >&6; }
+if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
+  test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
+  test -z "$striplib" && striplib="$STRIP --strip-unneeded"
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+# FIXME - insert some real tests, host_os isn't really good enough
+  case $host_os in
+  darwin*)
+    if test -n "$STRIP" ; then
+      striplib="$STRIP -x"
+      old_striplib="$STRIP -S"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+    else
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+    fi
+    ;;
+  *)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+    ;;
+  esac
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+  # Report which library types will actually be built
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if libtool supports shared libraries" >&5
+$as_echo_n "checking if libtool supports shared libraries... " >&6; }
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $can_build_shared" >&5
+$as_echo "$can_build_shared" >&6; }
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build shared libraries" >&5
+$as_echo_n "checking whether to build shared libraries... " >&6; }
+  test "$can_build_shared" = "no" && enable_shared=no
+
+  # On AIX, shared libraries and static libraries use the same namespace, and
+  # are all built from PIC.
+  case $host_os in
+  aix3*)
+    test "$enable_shared" = yes && enable_static=no
+    if test -n "$RANLIB"; then
+      archive_cmds="$archive_cmds~\$RANLIB \$lib"
+      postinstall_cmds='$RANLIB $lib'
+    fi
+    ;;
+
+  aix[4-9]*)
+    if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+      test "$enable_shared" = yes && enable_static=no
+    fi
+    ;;
+  esac
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_shared" >&5
+$as_echo "$enable_shared" >&6; }
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build static libraries" >&5
+$as_echo_n "checking whether to build static libraries... " >&6; }
+  # Make sure either enable_shared or enable_static is yes.
+  test "$enable_shared" = yes || enable_static=yes
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_static" >&5
+$as_echo "$enable_static" >&6; }
+
+
+
+
+fi
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+CC="$lt_save_CC"
+
+
+
+
+
+
+
+
+
+
+
+
+
+        ac_config_commands="$ac_config_commands libtool"
+
+
+
+
+# Only expand once:
+
+
+
+if test "x$CC" != xcc; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC and cc understand -c and -o together" >&5
+$as_echo_n "checking whether $CC and cc understand -c and -o together... " >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether cc understands -c and -o together" >&5
+$as_echo_n "checking whether cc understands -c and -o together... " >&6; }
+fi
+set dummy $CC; ac_cc=`$as_echo "$2" |
+		      sed 's/[^a-zA-Z0-9_]/_/g;s/^[0-9]/_/'`
+if { as_var=ac_cv_prog_cc_${ac_cc}_c_o; eval "test \"\${$as_var+set}\" = set"; }; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+# Make sure it works both with $CC and with simple cc.
+# We do the test twice because some compilers refuse to overwrite an
+# existing .o file with -o, though they will create one.
+ac_try='$CC -c conftest.$ac_ext -o conftest2.$ac_objext >&5'
+rm -f conftest2.*
+if { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } &&
+   test -f conftest2.$ac_objext && { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; };
+then
+  eval ac_cv_prog_cc_${ac_cc}_c_o=yes
+  if test "x$CC" != xcc; then
+    # Test first that cc exists at all.
+    if { ac_try='cc -c conftest.$ac_ext >&5'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+      ac_try='cc -c conftest.$ac_ext -o conftest2.$ac_objext >&5'
+      rm -f conftest2.*
+      if { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } &&
+	 test -f conftest2.$ac_objext && { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; };
+      then
+	# cc works too.
+	:
+      else
+	# cc exists but doesn't like -o.
+	eval ac_cv_prog_cc_${ac_cc}_c_o=no
+      fi
+    fi
+  fi
+else
+  eval ac_cv_prog_cc_${ac_cc}_c_o=no
+fi
+rm -f core conftest*
+
+fi
+if eval test \$ac_cv_prog_cc_${ac_cc}_c_o = yes; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
+$as_echo "#define NO_MINUS_C_MINUS_O 1" >>confdefs.h
+
+fi
+
+# expand $ac_aux_dir to an absolute path
+am_aux_dir=`cd $ac_aux_dir && pwd`
+
+# FIXME: we rely on the cache variable name because
+# there is no other way.
+set dummy $CC
+am_cc=`echo $2 | sed 's/[^a-zA-Z0-9_]/_/g;s/^[0-9]/_/'`
+eval am_t=\$ac_cv_prog_cc_${am_cc}_c_o
+if test "$am_t" != yes; then
+   # Losing compiler, so override with the script.
+   # FIXME: It is wrong to rewrite CC.
+   # But if we don't then we get into trouble of one sort or another.
+   # A longer-term fix would be to have automake use am__CC in this case,
+   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
+   CC="$am_aux_dir/compile $CC"
+fi
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} sets \$(MAKE)" >&5
+$as_echo_n "checking whether ${MAKE-make} sets \$(MAKE)... " >&6; }
+set x ${MAKE-make}
+ac_make=`$as_echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
+if { as_var=ac_cv_prog_make_${ac_make}_set; eval "test \"\${$as_var+set}\" = set"; }; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat >conftest.make <<\_ACEOF
+SHELL = /bin/sh
+all:
+	@echo '@@@%%%=$(MAKE)=@@@%%%'
+_ACEOF
+# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
+case `${MAKE-make} -f conftest.make 2>/dev/null` in
+  *@@@%%%=?*=@@@%%%*)
+    eval ac_cv_prog_make_${ac_make}_set=yes;;
+  *)
+    eval ac_cv_prog_make_${ac_make}_set=no;;
+esac
+rm -f conftest.make
+fi
+if eval test \$ac_cv_prog_make_${ac_make}_set = yes; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+  SET_MAKE=
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+  SET_MAKE="MAKE=${MAKE-make}"
+fi
+
+
+# -------
+# Headers
+# -------
+
+# Sanity check for the cross-compilation case:
+ac_fn_c_check_header_mongrel "$LINENO" "stdio.h" "ac_cv_header_stdio_h" "$ac_includes_default"
+if test "x$ac_cv_header_stdio_h" = x""yes; then :
+  :
+else
+  as_fn_error "Can't find stdio.h.
+You must have a usable C system for the target already installed, at least
+including headers and, preferably, the library, before you can configure
+the Objective C runtime system.  If necessary, install gcc now with
+\`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'." "$LINENO" 5
+fi
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
+$as_echo_n "checking for ANSI C header files... " >&6; }
+if test "${ac_cv_header_stdc+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_header_stdc=yes
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "memchr" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "free" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+  if test "$cross_compiling" = yes; then :
+  :
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ctype.h>
+#include <stdlib.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+		   (('a' <= (c) && (c) <= 'i') \
+		     || ('j' <= (c) && (c) <= 'r') \
+		     || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+  int i;
+  for (i = 0; i < 256; i++)
+    if (XOR (islower (i), ISLOWER (i))
+	|| toupper (i) != TOUPPER (i))
+      return 2;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
+$as_echo "$ac_cv_header_stdc" >&6; }
+if test $ac_cv_header_stdc = yes; then
+
+$as_echo "#define STDC_HEADERS 1" >>confdefs.h
+
+fi
+
+
+for ac_header in sched.h
+do :
+  ac_fn_c_check_header_mongrel "$LINENO" "sched.h" "ac_cv_header_sched_h" "$ac_includes_default"
+if test "x$ac_cv_header_sched_h" = x""yes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_SCHED_H 1
+_ACEOF
+
+fi
+
+done
+
+
+# -----------
+# Miscellanea
+# -----------
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for thread model used by GCC" >&5
+$as_echo_n "checking for thread model used by GCC... " >&6; }
+target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $target_thread_file" >&5
+$as_echo "$target_thread_file" >&6; }
+
+if test $target_thread_file != single; then
+
+$as_echo "#define HAVE_GTHR_DEFAULT 1" >>confdefs.h
+
+fi
+
+# Check if we have thread-local storage
+
+
+   # Check whether --enable-tls was given.
+if test "${enable_tls+set}" = set; then :
+  enableval=$enable_tls;
+      case "$enableval" in
+       yes|no) ;;
+       *) as_fn_error "Argument to enable/disable tls must be yes or no" "$LINENO" 5 ;;
+      esac
+
+else
+  enable_tls=yes
+fi
+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the target supports thread-local storage" >&5
+$as_echo_n "checking whether the target supports thread-local storage... " >&6; }
+if test "${gcc_cv_have_tls+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+
+    if test "$cross_compiling" = yes; then :
+                if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+__thread int a; int b; int main() { return a = b; }
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  chktls_save_LDFLAGS="$LDFLAGS"
+	  	  	  case $host in
+	    *-*-linux*)
+	      LDFLAGS="-shared -Wl,--no-undefined $LDFLAGS"
+	      ;;
+	  esac
+	  chktls_save_CFLAGS="$CFLAGS"
+	  CFLAGS="-fPIC $CFLAGS"
+	  	  if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int f() { return 0; }
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+__thread int a; int b; int f() { return a = b; }
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  gcc_cv_have_tls=yes
+else
+  gcc_cv_have_tls=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+else
+  gcc_cv_have_tls=yes
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+	  CFLAGS="$chktls_save_CFLAGS"
+	  LDFLAGS="$chktls_save_LDFLAGS"
+else
+  gcc_cv_have_tls=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+
+
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+__thread int a; int b; int main() { return a = b; }
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+                      chktls_save_LDFLAGS="$LDFLAGS"
+      LDFLAGS="-static $LDFLAGS"
+      if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int main() { return 0; }
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  if test "$cross_compiling" = yes; then :
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "cannot run test program while cross compiling
+See \`config.log' for more details." "$LINENO" 5; }
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+__thread int a; int b; int main() { return a = b; }
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+  gcc_cv_have_tls=yes
+else
+  gcc_cv_have_tls=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+else
+  gcc_cv_have_tls=yes
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+      LDFLAGS="$chktls_save_LDFLAGS"
+      if test $gcc_cv_have_tls = yes; then
+						chktls_save_CFLAGS="$CFLAGS"
+	thread_CFLAGS=failed
+	for flag in '' '-pthread' '-lpthread'; do
+	  CFLAGS="$flag $chktls_save_CFLAGS"
+	  if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <pthread.h>
+		void *g(void *d) { return NULL; }
+int
+main ()
+{
+pthread_t t; pthread_create(&t,NULL,g,NULL);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  thread_CFLAGS="$flag"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+	  if test "X$thread_CFLAGS" != Xfailed; then
+	    break
+	  fi
+	done
+	CFLAGS="$chktls_save_CFLAGS"
+	if test "X$thread_CFLAGS" != Xfailed; then
+	  CFLAGS="$thread_CFLAGS $chktls_save_CFLAGS"
+ 	  	  	  	  	  	  if test "$cross_compiling" = yes; then :
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "cannot run test program while cross compiling
+See \`config.log' for more details." "$LINENO" 5; }
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <pthread.h>
+		__thread int a;
+		static int *volatile a_in_other_thread;
+		static void *
+		thread_func (void *arg)
+		{
+		  a_in_other_thread = &a;
+		  return (void *)0;
+		}
+int
+main ()
+{
+pthread_t thread;
+		void *thread_retval;
+		int *volatile a_in_main_thread;
+		a_in_main_thread = &a;
+		if (pthread_create (&thread, (pthread_attr_t *)0,
+				    thread_func, (void *)0))
+		  return 0;
+		if (pthread_join (thread, &thread_retval))
+		  return 0;
+		return (a_in_other_thread == a_in_main_thread);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+  gcc_cv_have_tls=yes
+else
+  gcc_cv_have_tls=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+	  CFLAGS="$chktls_save_CFLAGS"
+	fi
+      fi
+else
+  gcc_cv_have_tls=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_have_tls" >&5
+$as_echo "$gcc_cv_have_tls" >&6; }
+  if test "$enable_tls $gcc_cv_have_tls" = "yes yes"; then
+
+$as_echo "#define HAVE_TLS 1" >>confdefs.h
+
+  fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for exception model to use" >&5
+$as_echo_n "checking for exception model to use... " >&6; }
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+# Check whether --enable-sjlj-exceptions was given.
+if test "${enable_sjlj_exceptions+set}" = set; then :
+  enableval=$enable_sjlj_exceptions; :
+else
+  cat > conftest.$ac_ext << EOF
+#line 11475 "configure"
+@interface Frob
+@end
+@implementation Frob
+@end
+int proc();
+int foo()
+{
+  @try {
+   return proc();
+  }
+  @catch (Frob* ex) {
+    return 0;
+  }
+}
+EOF
+old_CFLAGS="$CFLAGS"
+CFLAGS="-x objective-c -fgnu-runtime -fobjc-exceptions -S"
+if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+  if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
+    enable_sjlj_exceptions=yes
+  elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
+    enable_sjlj_exceptions=no
+  fi
+fi
+CFLAGS="$old_CFLAGS"
+rm -f conftest*
+fi
+
+if test x$enable_sjlj_exceptions = xyes; then
+
+$as_echo "#define SJLJ_EXCEPTIONS 1" >>confdefs.h
+
+  ac_exception_model_name=sjlj
+elif test x$enable_sjlj_exceptions = xno; then
+  ac_exception_model_name="call frame"
+else
+  as_fn_error "unable to detect exception model" "$LINENO" 5
+fi
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_exception_model_name" >&5
+$as_echo "$ac_exception_model_name" >&6; }
+
+# ------
+# Output
+# ------
+
+if test ${multilib} = yes; then
+  multilib_arg="--enable-multilib"
+else
+  multilib_arg=
+fi
+
+ac_config_files="$ac_config_files Makefile"
+
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems.  If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, we kill variables containing newlines.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+(
+  for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+
+  (set) 2>&1 |
+    case $as_nl`(ac_space=' '; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      # `set' does not quote correctly, so add quotes: double-quote
+      # substitution turns \\\\ into \\, and sed turns \\ into \.
+      sed -n \
+	"s/'/'\\\\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+      ;; #(
+    *)
+      # `set' quotes correctly as required by POSIX, so do not add quotes.
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+) |
+  sed '
+     /^ac_cv_env_/b end
+     t clear
+     :clear
+     s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+     t end
+     s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+     :end' >>confcache
+if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
+  if test -w "$cache_file"; then
+    test "x$cache_file" != "x/dev/null" &&
+      { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
+$as_echo "$as_me: updating cache $cache_file" >&6;}
+    cat confcache >$cache_file
+  else
+    { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
+$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;}
+  fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+DEFS=-DHAVE_CONFIG_H
+
+ac_libobjs=
+ac_ltlibobjs=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+  # 1. Remove the extension, and $U if already installed.
+  ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
+  ac_i=`$as_echo "$ac_i" | sed "$ac_script"`
+  # 2. Prepend LIBOBJDIR.  When used with automake>=1.10 LIBOBJDIR
+  #    will be set to the directory where LIBOBJS objects are built.
+  as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"
+  as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+if test -z "${MAINTAINER_MODE_TRUE}" && test -z "${MAINTAINER_MODE_FALSE}"; then
+  as_fn_error "conditional \"MAINTAINER_MODE\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+
+: ${CONFIG_STATUS=./config.status}
+ac_write_fail=0
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
+$as_echo "$as_me: creating $CONFIG_STATUS" >&6;}
+as_write_fail=0
+cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+
+SHELL=\${CONFIG_SHELL-$SHELL}
+export SHELL
+_ASEOF
+cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='print -r --'
+  as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='printf %s\n'
+  as_echo_n='printf %s'
+else
+  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+    as_echo_n='/usr/ucb/echo -n'
+  else
+    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+    as_echo_n_body='eval
+      arg=$1;
+      case $arg in #(
+      *"$as_nl"*)
+	expr "X$arg" : "X\\(.*\\)$as_nl";
+	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+      esac;
+      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+    '
+    export as_echo_n_body
+    as_echo_n='sh -c $as_echo_n_body as_echo'
+  fi
+  export as_echo_body
+  as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" ""	$as_nl"
+
+# Find who we are.  Look in the path if we contain no directory separator.
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there.  '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+
+# as_fn_error ERROR [LINENO LOG_FD]
+# ---------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with status $?, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$?; test $as_status -eq 0 && as_status=1
+  if test "$3"; then
+    as_lineno=${as_lineno-"$2"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $1" >&$3
+  fi
+  $as_echo "$as_me: error: $1" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -p'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -p'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -p'
+  fi
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+if test -x / >/dev/null 2>&1; then
+  as_test_x='test -x'
+else
+  if ls -dL / >/dev/null 2>&1; then
+    as_ls_L_option=L
+  else
+    as_ls_L_option=
+  fi
+  as_test_x='
+    eval sh -c '\''
+      if test -d "$1"; then
+	test -d "$1/.";
+      else
+	case $1 in #(
+	-*)set "./$1";;
+	esac;
+	case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
+	???[sx]*):;;*)false;;esac;fi
+    '\'' sh
+  '
+fi
+as_executable_p=$as_test_x
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+exec 6>&1
+## ----------------------------------- ##
+## Main body of $CONFIG_STATUS script. ##
+## ----------------------------------- ##
+_ASEOF
+test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# Save the log message, to keep $0 and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.
+ac_log="
+This file was extended by package-unused $as_me version-unused, which was
+generated by GNU Autoconf 2.64.  Invocation command line was
+
+  CONFIG_FILES    = $CONFIG_FILES
+  CONFIG_HEADERS  = $CONFIG_HEADERS
+  CONFIG_LINKS    = $CONFIG_LINKS
+  CONFIG_COMMANDS = $CONFIG_COMMANDS
+  $ $0 $@
+
+on `(hostname || uname -n) 2>/dev/null | sed 1q`
+"
+
+_ACEOF
+
+case $ac_config_files in *"
+"*) set x $ac_config_files; shift; ac_config_files=$*;;
+esac
+
+case $ac_config_headers in *"
+"*) set x $ac_config_headers; shift; ac_config_headers=$*;;
+esac
+
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+# Files that config.status was made for.
+config_files="$ac_config_files"
+config_headers="$ac_config_headers"
+config_commands="$ac_config_commands"
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+ac_cs_usage="\
+\`$as_me' instantiates files and other configuration actions
+from templates according to the current configuration.  Unless the files
+and actions are specified as TAGs, all are instantiated by default.
+
+Usage: $0 [OPTION]... [TAG]...
+
+  -h, --help       print this help, then exit
+  -V, --version    print version number and configuration settings, then exit
+  -q, --quiet, --silent
+                   do not print progress messages
+  -d, --debug      don't remove temporary files
+      --recheck    update $as_me by reconfiguring in the same conditions
+      --file=FILE[:TEMPLATE]
+                   instantiate the configuration file FILE
+      --header=FILE[:TEMPLATE]
+                   instantiate the configuration header FILE
+
+Configuration files:
+$config_files
+
+Configuration headers:
+$config_headers
+
+Configuration commands:
+$config_commands
+
+Report bugs to the package provider."
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_cs_version="\\
+package-unused config.status version-unused
+configured by $0, generated by GNU Autoconf 2.64,
+  with options \\"`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"
+
+Copyright (C) 2009 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+
+ac_pwd='$ac_pwd'
+srcdir='$srcdir'
+INSTALL='$INSTALL'
+AWK='$AWK'
+test -n "\$AWK" || AWK=awk
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# The default lists apply if the user does not specify any file.
+ac_need_defaults=:
+while test $# != 0
+do
+  case $1 in
+  --*=*)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=`expr "X$1" : 'X[^=]*=\(.*\)'`
+    ac_shift=:
+    ;;
+  *)
+    ac_option=$1
+    ac_optarg=$2
+    ac_shift=shift
+    ;;
+  esac
+
+  case $ac_option in
+  # Handling of the options.
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    ac_cs_recheck=: ;;
+  --version | --versio | --versi | --vers | --ver | --ve | --v | -V )
+    $as_echo "$ac_cs_version"; exit ;;
+  --debug | --debu | --deb | --de | --d | -d )
+    debug=: ;;
+  --file | --fil | --fi | --f )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    as_fn_append CONFIG_FILES " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --header | --heade | --head | --hea )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    as_fn_append CONFIG_HEADERS " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --he | --h)
+    # Conflict between --help and --header
+    as_fn_error "ambiguous option: \`$1'
+Try \`$0 --help' for more information.";;
+  --help | --hel | -h )
+    $as_echo "$ac_cs_usage"; exit ;;
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil | --si | --s)
+    ac_cs_silent=: ;;
+
+  # This is an error.
+  -*) as_fn_error "unrecognized option: \`$1'
+Try \`$0 --help' for more information." ;;
+
+  *) as_fn_append ac_config_targets " $1"
+     ac_need_defaults=false ;;
+
+  esac
+  shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+  exec 6>/dev/null
+  ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+if \$ac_cs_recheck; then
+  set X '$SHELL' '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+  shift
+  \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
+  CONFIG_SHELL='$SHELL'
+  export CONFIG_SHELL
+  exec "\$@"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+exec 5>>config.log
+{
+  echo
+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+  $as_echo "$ac_log"
+} >&5
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+#
+# INIT-COMMANDS
+#
+
+srcdir="$srcdir"
+host="$host"
+target="$target"
+with_multisubdir="$with_multisubdir"
+with_multisrctop="$with_multisrctop"
+with_target_subdir="$with_target_subdir"
+ac_configure_args="${multilib_arg} ${ac_configure_args}"
+multi_basedir="$multi_basedir"
+CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
+CC="$CC"
+CXX="$CXX"
+GFORTRAN="$GFORTRAN"
+GCJ="$GCJ"
+
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+sed_quote_subst='$sed_quote_subst'
+double_quote_subst='$double_quote_subst'
+delay_variable_subst='$delay_variable_subst'
+AS='`$ECHO "$AS" | $SED "$delay_single_quote_subst"`'
+DLLTOOL='`$ECHO "$DLLTOOL" | $SED "$delay_single_quote_subst"`'
+OBJDUMP='`$ECHO "$OBJDUMP" | $SED "$delay_single_quote_subst"`'
+macro_version='`$ECHO "$macro_version" | $SED "$delay_single_quote_subst"`'
+macro_revision='`$ECHO "$macro_revision" | $SED "$delay_single_quote_subst"`'
+enable_shared='`$ECHO "$enable_shared" | $SED "$delay_single_quote_subst"`'
+enable_static='`$ECHO "$enable_static" | $SED "$delay_single_quote_subst"`'
+pic_mode='`$ECHO "$pic_mode" | $SED "$delay_single_quote_subst"`'
+enable_fast_install='`$ECHO "$enable_fast_install" | $SED "$delay_single_quote_subst"`'
+SHELL='`$ECHO "$SHELL" | $SED "$delay_single_quote_subst"`'
+ECHO='`$ECHO "$ECHO" | $SED "$delay_single_quote_subst"`'
+host_alias='`$ECHO "$host_alias" | $SED "$delay_single_quote_subst"`'
+host='`$ECHO "$host" | $SED "$delay_single_quote_subst"`'
+host_os='`$ECHO "$host_os" | $SED "$delay_single_quote_subst"`'
+build_alias='`$ECHO "$build_alias" | $SED "$delay_single_quote_subst"`'
+build='`$ECHO "$build" | $SED "$delay_single_quote_subst"`'
+build_os='`$ECHO "$build_os" | $SED "$delay_single_quote_subst"`'
+SED='`$ECHO "$SED" | $SED "$delay_single_quote_subst"`'
+Xsed='`$ECHO "$Xsed" | $SED "$delay_single_quote_subst"`'
+GREP='`$ECHO "$GREP" | $SED "$delay_single_quote_subst"`'
+EGREP='`$ECHO "$EGREP" | $SED "$delay_single_quote_subst"`'
+FGREP='`$ECHO "$FGREP" | $SED "$delay_single_quote_subst"`'
+LD='`$ECHO "$LD" | $SED "$delay_single_quote_subst"`'
+NM='`$ECHO "$NM" | $SED "$delay_single_quote_subst"`'
+LN_S='`$ECHO "$LN_S" | $SED "$delay_single_quote_subst"`'
+max_cmd_len='`$ECHO "$max_cmd_len" | $SED "$delay_single_quote_subst"`'
+ac_objext='`$ECHO "$ac_objext" | $SED "$delay_single_quote_subst"`'
+exeext='`$ECHO "$exeext" | $SED "$delay_single_quote_subst"`'
+lt_unset='`$ECHO "$lt_unset" | $SED "$delay_single_quote_subst"`'
+lt_SP2NL='`$ECHO "$lt_SP2NL" | $SED "$delay_single_quote_subst"`'
+lt_NL2SP='`$ECHO "$lt_NL2SP" | $SED "$delay_single_quote_subst"`'
+reload_flag='`$ECHO "$reload_flag" | $SED "$delay_single_quote_subst"`'
+reload_cmds='`$ECHO "$reload_cmds" | $SED "$delay_single_quote_subst"`'
+deplibs_check_method='`$ECHO "$deplibs_check_method" | $SED "$delay_single_quote_subst"`'
+file_magic_cmd='`$ECHO "$file_magic_cmd" | $SED "$delay_single_quote_subst"`'
+AR='`$ECHO "$AR" | $SED "$delay_single_quote_subst"`'
+AR_FLAGS='`$ECHO "$AR_FLAGS" | $SED "$delay_single_quote_subst"`'
+STRIP='`$ECHO "$STRIP" | $SED "$delay_single_quote_subst"`'
+RANLIB='`$ECHO "$RANLIB" | $SED "$delay_single_quote_subst"`'
+old_postinstall_cmds='`$ECHO "$old_postinstall_cmds" | $SED "$delay_single_quote_subst"`'
+old_postuninstall_cmds='`$ECHO "$old_postuninstall_cmds" | $SED "$delay_single_quote_subst"`'
+old_archive_cmds='`$ECHO "$old_archive_cmds" | $SED "$delay_single_quote_subst"`'
+lock_old_archive_extraction='`$ECHO "$lock_old_archive_extraction" | $SED "$delay_single_quote_subst"`'
+CC='`$ECHO "$CC" | $SED "$delay_single_quote_subst"`'
+CFLAGS='`$ECHO "$CFLAGS" | $SED "$delay_single_quote_subst"`'
+compiler='`$ECHO "$compiler" | $SED "$delay_single_quote_subst"`'
+GCC='`$ECHO "$GCC" | $SED "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_pipe='`$ECHO "$lt_cv_sys_global_symbol_pipe" | $SED "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_to_cdecl='`$ECHO "$lt_cv_sys_global_symbol_to_cdecl" | $SED "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_to_c_name_address='`$ECHO "$lt_cv_sys_global_symbol_to_c_name_address" | $SED "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix='`$ECHO "$lt_cv_sys_global_symbol_to_c_name_address_lib_prefix" | $SED "$delay_single_quote_subst"`'
+objdir='`$ECHO "$objdir" | $SED "$delay_single_quote_subst"`'
+MAGIC_CMD='`$ECHO "$MAGIC_CMD" | $SED "$delay_single_quote_subst"`'
+lt_prog_compiler_no_builtin_flag='`$ECHO "$lt_prog_compiler_no_builtin_flag" | $SED "$delay_single_quote_subst"`'
+lt_prog_compiler_wl='`$ECHO "$lt_prog_compiler_wl" | $SED "$delay_single_quote_subst"`'
+lt_prog_compiler_pic='`$ECHO "$lt_prog_compiler_pic" | $SED "$delay_single_quote_subst"`'
+lt_prog_compiler_static='`$ECHO "$lt_prog_compiler_static" | $SED "$delay_single_quote_subst"`'
+lt_cv_prog_compiler_c_o='`$ECHO "$lt_cv_prog_compiler_c_o" | $SED "$delay_single_quote_subst"`'
+need_locks='`$ECHO "$need_locks" | $SED "$delay_single_quote_subst"`'
+DSYMUTIL='`$ECHO "$DSYMUTIL" | $SED "$delay_single_quote_subst"`'
+NMEDIT='`$ECHO "$NMEDIT" | $SED "$delay_single_quote_subst"`'
+LIPO='`$ECHO "$LIPO" | $SED "$delay_single_quote_subst"`'
+OTOOL='`$ECHO "$OTOOL" | $SED "$delay_single_quote_subst"`'
+OTOOL64='`$ECHO "$OTOOL64" | $SED "$delay_single_quote_subst"`'
+libext='`$ECHO "$libext" | $SED "$delay_single_quote_subst"`'
+shrext_cmds='`$ECHO "$shrext_cmds" | $SED "$delay_single_quote_subst"`'
+extract_expsyms_cmds='`$ECHO "$extract_expsyms_cmds" | $SED "$delay_single_quote_subst"`'
+archive_cmds_need_lc='`$ECHO "$archive_cmds_need_lc" | $SED "$delay_single_quote_subst"`'
+enable_shared_with_static_runtimes='`$ECHO "$enable_shared_with_static_runtimes" | $SED "$delay_single_quote_subst"`'
+export_dynamic_flag_spec='`$ECHO "$export_dynamic_flag_spec" | $SED "$delay_single_quote_subst"`'
+whole_archive_flag_spec='`$ECHO "$whole_archive_flag_spec" | $SED "$delay_single_quote_subst"`'
+compiler_needs_object='`$ECHO "$compiler_needs_object" | $SED "$delay_single_quote_subst"`'
+old_archive_from_new_cmds='`$ECHO "$old_archive_from_new_cmds" | $SED "$delay_single_quote_subst"`'
+old_archive_from_expsyms_cmds='`$ECHO "$old_archive_from_expsyms_cmds" | $SED "$delay_single_quote_subst"`'
+archive_cmds='`$ECHO "$archive_cmds" | $SED "$delay_single_quote_subst"`'
+archive_expsym_cmds='`$ECHO "$archive_expsym_cmds" | $SED "$delay_single_quote_subst"`'
+module_cmds='`$ECHO "$module_cmds" | $SED "$delay_single_quote_subst"`'
+module_expsym_cmds='`$ECHO "$module_expsym_cmds" | $SED "$delay_single_quote_subst"`'
+with_gnu_ld='`$ECHO "$with_gnu_ld" | $SED "$delay_single_quote_subst"`'
+allow_undefined_flag='`$ECHO "$allow_undefined_flag" | $SED "$delay_single_quote_subst"`'
+no_undefined_flag='`$ECHO "$no_undefined_flag" | $SED "$delay_single_quote_subst"`'
+hardcode_libdir_flag_spec='`$ECHO "$hardcode_libdir_flag_spec" | $SED "$delay_single_quote_subst"`'
+hardcode_libdir_flag_spec_ld='`$ECHO "$hardcode_libdir_flag_spec_ld" | $SED "$delay_single_quote_subst"`'
+hardcode_libdir_separator='`$ECHO "$hardcode_libdir_separator" | $SED "$delay_single_quote_subst"`'
+hardcode_direct='`$ECHO "$hardcode_direct" | $SED "$delay_single_quote_subst"`'
+hardcode_direct_absolute='`$ECHO "$hardcode_direct_absolute" | $SED "$delay_single_quote_subst"`'
+hardcode_minus_L='`$ECHO "$hardcode_minus_L" | $SED "$delay_single_quote_subst"`'
+hardcode_shlibpath_var='`$ECHO "$hardcode_shlibpath_var" | $SED "$delay_single_quote_subst"`'
+hardcode_automatic='`$ECHO "$hardcode_automatic" | $SED "$delay_single_quote_subst"`'
+inherit_rpath='`$ECHO "$inherit_rpath" | $SED "$delay_single_quote_subst"`'
+link_all_deplibs='`$ECHO "$link_all_deplibs" | $SED "$delay_single_quote_subst"`'
+fix_srcfile_path='`$ECHO "$fix_srcfile_path" | $SED "$delay_single_quote_subst"`'
+always_export_symbols='`$ECHO "$always_export_symbols" | $SED "$delay_single_quote_subst"`'
+export_symbols_cmds='`$ECHO "$export_symbols_cmds" | $SED "$delay_single_quote_subst"`'
+exclude_expsyms='`$ECHO "$exclude_expsyms" | $SED "$delay_single_quote_subst"`'
+include_expsyms='`$ECHO "$include_expsyms" | $SED "$delay_single_quote_subst"`'
+prelink_cmds='`$ECHO "$prelink_cmds" | $SED "$delay_single_quote_subst"`'
+file_list_spec='`$ECHO "$file_list_spec" | $SED "$delay_single_quote_subst"`'
+variables_saved_for_relink='`$ECHO "$variables_saved_for_relink" | $SED "$delay_single_quote_subst"`'
+need_lib_prefix='`$ECHO "$need_lib_prefix" | $SED "$delay_single_quote_subst"`'
+need_version='`$ECHO "$need_version" | $SED "$delay_single_quote_subst"`'
+version_type='`$ECHO "$version_type" | $SED "$delay_single_quote_subst"`'
+runpath_var='`$ECHO "$runpath_var" | $SED "$delay_single_quote_subst"`'
+shlibpath_var='`$ECHO "$shlibpath_var" | $SED "$delay_single_quote_subst"`'
+shlibpath_overrides_runpath='`$ECHO "$shlibpath_overrides_runpath" | $SED "$delay_single_quote_subst"`'
+libname_spec='`$ECHO "$libname_spec" | $SED "$delay_single_quote_subst"`'
+library_names_spec='`$ECHO "$library_names_spec" | $SED "$delay_single_quote_subst"`'
+soname_spec='`$ECHO "$soname_spec" | $SED "$delay_single_quote_subst"`'
+install_override_mode='`$ECHO "$install_override_mode" | $SED "$delay_single_quote_subst"`'
+postinstall_cmds='`$ECHO "$postinstall_cmds" | $SED "$delay_single_quote_subst"`'
+postuninstall_cmds='`$ECHO "$postuninstall_cmds" | $SED "$delay_single_quote_subst"`'
+finish_cmds='`$ECHO "$finish_cmds" | $SED "$delay_single_quote_subst"`'
+finish_eval='`$ECHO "$finish_eval" | $SED "$delay_single_quote_subst"`'
+hardcode_into_libs='`$ECHO "$hardcode_into_libs" | $SED "$delay_single_quote_subst"`'
+sys_lib_search_path_spec='`$ECHO "$sys_lib_search_path_spec" | $SED "$delay_single_quote_subst"`'
+sys_lib_dlsearch_path_spec='`$ECHO "$sys_lib_dlsearch_path_spec" | $SED "$delay_single_quote_subst"`'
+hardcode_action='`$ECHO "$hardcode_action" | $SED "$delay_single_quote_subst"`'
+enable_dlopen='`$ECHO "$enable_dlopen" | $SED "$delay_single_quote_subst"`'
+enable_dlopen_self='`$ECHO "$enable_dlopen_self" | $SED "$delay_single_quote_subst"`'
+enable_dlopen_self_static='`$ECHO "$enable_dlopen_self_static" | $SED "$delay_single_quote_subst"`'
+old_striplib='`$ECHO "$old_striplib" | $SED "$delay_single_quote_subst"`'
+striplib='`$ECHO "$striplib" | $SED "$delay_single_quote_subst"`'
+
+LTCC='$LTCC'
+LTCFLAGS='$LTCFLAGS'
+compiler='$compiler_DEFAULT'
+
+# A function that is used when there is no print builtin or printf.
+func_fallback_echo ()
+{
+  eval 'cat <<_LTECHO_EOF
+\$1
+_LTECHO_EOF'
+}
+
+# Quote evaled strings.
+for var in AS \
+DLLTOOL \
+OBJDUMP \
+SHELL \
+ECHO \
+SED \
+GREP \
+EGREP \
+FGREP \
+LD \
+NM \
+LN_S \
+lt_SP2NL \
+lt_NL2SP \
+reload_flag \
+deplibs_check_method \
+file_magic_cmd \
+AR \
+AR_FLAGS \
+STRIP \
+RANLIB \
+CC \
+CFLAGS \
+compiler \
+lt_cv_sys_global_symbol_pipe \
+lt_cv_sys_global_symbol_to_cdecl \
+lt_cv_sys_global_symbol_to_c_name_address \
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix \
+lt_prog_compiler_no_builtin_flag \
+lt_prog_compiler_wl \
+lt_prog_compiler_pic \
+lt_prog_compiler_static \
+lt_cv_prog_compiler_c_o \
+need_locks \
+DSYMUTIL \
+NMEDIT \
+LIPO \
+OTOOL \
+OTOOL64 \
+shrext_cmds \
+export_dynamic_flag_spec \
+whole_archive_flag_spec \
+compiler_needs_object \
+with_gnu_ld \
+allow_undefined_flag \
+no_undefined_flag \
+hardcode_libdir_flag_spec \
+hardcode_libdir_flag_spec_ld \
+hardcode_libdir_separator \
+fix_srcfile_path \
+exclude_expsyms \
+include_expsyms \
+file_list_spec \
+variables_saved_for_relink \
+libname_spec \
+library_names_spec \
+soname_spec \
+install_override_mode \
+finish_eval \
+old_striplib \
+striplib; do
+    case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
+    *[\\\\\\\`\\"\\\$]*)
+      eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED \\"\\\$sed_quote_subst\\"\\\`\\\\\\""
+      ;;
+    *)
+      eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+      ;;
+    esac
+done
+
+# Double-quote double-evaled strings.
+for var in reload_cmds \
+old_postinstall_cmds \
+old_postuninstall_cmds \
+old_archive_cmds \
+extract_expsyms_cmds \
+old_archive_from_new_cmds \
+old_archive_from_expsyms_cmds \
+archive_cmds \
+archive_expsym_cmds \
+module_cmds \
+module_expsym_cmds \
+export_symbols_cmds \
+prelink_cmds \
+postinstall_cmds \
+postuninstall_cmds \
+finish_cmds \
+sys_lib_search_path_spec \
+sys_lib_dlsearch_path_spec; do
+    case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
+    *[\\\\\\\`\\"\\\$]*)
+      eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\""
+      ;;
+    *)
+      eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+      ;;
+    esac
+done
+
+ac_aux_dir='$ac_aux_dir'
+xsi_shell='$xsi_shell'
+lt_shell_append='$lt_shell_append'
+
+# See if we are running on zsh, and set the options which allow our
+# commands through without removal of \ escapes INIT.
+if test -n "\${ZSH_VERSION+set}" ; then
+   setopt NO_GLOB_SUBST
+fi
+
+
+    PACKAGE='$PACKAGE'
+    VERSION='$VERSION'
+    TIMESTAMP='$TIMESTAMP'
+    RM='$RM'
+    ofile='$ofile'
+
+
+
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+
+# Handling of arguments.
+for ac_config_target in $ac_config_targets
+do
+  case $ac_config_target in
+    "default-1") CONFIG_COMMANDS="$CONFIG_COMMANDS default-1" ;;
+    "config.h") CONFIG_HEADERS="$CONFIG_HEADERS config.h" ;;
+    "libtool") CONFIG_COMMANDS="$CONFIG_COMMANDS libtool" ;;
+    "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
+
+  *) as_fn_error "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
+  esac
+done
+
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used.  Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+  test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
+  test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
+  test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
+fi
+
+# Have a temporary directory for convenience.  Make it in the build tree
+# simply because there is no reason against having it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Hook for its removal unless debugging.
+# Note that there is a small window in which the directory will not be cleaned:
+# after its creation but before its name has been assigned to `$tmp'.
+$debug ||
+{
+  tmp=
+  trap 'exit_status=$?
+  { test -z "$tmp" || test ! -d "$tmp" || rm -fr "$tmp"; } && exit $exit_status
+' 0
+  trap 'as_fn_exit 1' 1 2 13 15
+}
+# Create a (secure) tmp directory for tmp files.
+
+{
+  tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&
+  test -n "$tmp" && test -d "$tmp"
+}  ||
+{
+  tmp=./conf$$-$RANDOM
+  (umask 077 && mkdir "$tmp")
+} || as_fn_error "cannot create a temporary directory in ." "$LINENO" 5
+
+# Set up the scripts for CONFIG_FILES section.
+# No need to generate them if there are no CONFIG_FILES.
+# This happens for instance with `./config.status config.h'.
+if test -n "$CONFIG_FILES"; then
+
+
+ac_cr=`echo X | tr X '\015'`
+# On cygwin, bash can eat \r inside `` if the user requested igncr.
+# But we know of no other shell where ac_cr would be empty at this
+# point, so we can use a bashism as a fallback.
+if test "x$ac_cr" = x; then
+  eval ac_cr=\$\'\\r\'
+fi
+ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null`
+if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
+  ac_cs_awk_cr='\r'
+else
+  ac_cs_awk_cr=$ac_cr
+fi
+
+echo 'BEGIN {' >"$tmp/subs1.awk" &&
+_ACEOF
+
+
+{
+  echo "cat >conf$$subs.awk <<_ACEOF" &&
+  echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' &&
+  echo "_ACEOF"
+} >conf$$subs.sh ||
+  as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+ac_delim_num=`echo "$ac_subst_vars" | grep -c '$'`
+ac_delim='%!_!# '
+for ac_last_try in false false false false false :; do
+  . ./conf$$subs.sh ||
+    as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+
+  ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X`
+  if test $ac_delim_n = $ac_delim_num; then
+    break
+  elif $ac_last_try; then
+    as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+rm -f conf$$subs.sh
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"\$tmp/subs1.awk" <<\\_ACAWK &&
+_ACEOF
+sed -n '
+h
+s/^/S["/; s/!.*/"]=/
+p
+g
+s/^[^!]*!//
+:repl
+t repl
+s/'"$ac_delim"'$//
+t delim
+:nl
+h
+s/\(.\{148\}\).*/\1/
+t more1
+s/["\\]/\\&/g; s/^/"/; s/$/\\n"\\/
+p
+n
+b repl
+:more1
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t nl
+:delim
+h
+s/\(.\{148\}\).*/\1/
+t more2
+s/["\\]/\\&/g; s/^/"/; s/$/"/
+p
+b
+:more2
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t delim
+' <conf$$subs.awk | sed '
+/^[^""]/{
+  N
+  s/\n//
+}
+' >>$CONFIG_STATUS || ac_write_fail=1
+rm -f conf$$subs.awk
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+_ACAWK
+cat >>"\$tmp/subs1.awk" <<_ACAWK &&
+  for (key in S) S_is_set[key] = 1
+  FS = ""
+
+}
+{
+  line = $ 0
+  nfields = split(line, field, "@")
+  substed = 0
+  len = length(field[1])
+  for (i = 2; i < nfields; i++) {
+    key = field[i]
+    keylen = length(key)
+    if (S_is_set[key]) {
+      value = S[key]
+      line = substr(line, 1, len) "" value "" substr(line, len + keylen + 3)
+      len += length(value) + length(field[++i])
+      substed = 1
+    } else
+      len += 1 + keylen
+  }
+
+  print line
+}
+
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+if sed "s/$ac_cr//" < /dev/null > /dev/null 2>&1; then
+  sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g"
+else
+  cat
+fi < "$tmp/subs1.awk" > "$tmp/subs.awk" \
+  || as_fn_error "could not setup config files machinery" "$LINENO" 5
+_ACEOF
+
+# VPATH may cause trouble with some makes, so we remove $(srcdir),
+# ${srcdir} and @srcdir@ from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+  ac_vpsub='/^[	 ]*VPATH[	 ]*=/{
+s/:*\$(srcdir):*/:/
+s/:*\${srcdir}:*/:/
+s/:*@srcdir@:*/:/
+s/^\([^=]*=[	 ]*\):*/\1/
+s/:*$//
+s/^[^=]*=[	 ]*$//
+}'
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+fi # test -n "$CONFIG_FILES"
+
+# Set up the scripts for CONFIG_HEADERS section.
+# No need to generate them if there are no CONFIG_HEADERS.
+# This happens for instance with `./config.status Makefile'.
+if test -n "$CONFIG_HEADERS"; then
+cat >"$tmp/defines.awk" <<\_ACAWK ||
+BEGIN {
+_ACEOF
+
+# Transform confdefs.h into an awk script `defines.awk', embedded as
+# here-document in config.status, that substitutes the proper values into
+# config.h.in to produce config.h.
+
+# Create a delimiter string that does not exist in confdefs.h, to ease
+# handling of long lines.
+ac_delim='%!_!# '
+for ac_last_try in false false :; do
+  ac_t=`sed -n "/$ac_delim/p" confdefs.h`
+  if test -z "$ac_t"; then
+    break
+  elif $ac_last_try; then
+    as_fn_error "could not make $CONFIG_HEADERS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+
+# For the awk script, D is an array of macro values keyed by name,
+# likewise P contains macro parameters if any.  Preserve backslash
+# newline sequences.
+
+ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]*
+sed -n '
+s/.\{148\}/&'"$ac_delim"'/g
+t rset
+:rset
+s/^[	 ]*#[	 ]*define[	 ][	 ]*/ /
+t def
+d
+:def
+s/\\$//
+t bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3"/p
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2"/p
+d
+:bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3\\\\\\n"\\/p
+t cont
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2\\\\\\n"\\/p
+t cont
+d
+:cont
+n
+s/.\{148\}/&'"$ac_delim"'/g
+t clear
+:clear
+s/\\$//
+t bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/"/p
+d
+:bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p
+b cont
+' <confdefs.h | sed '
+s/'"$ac_delim"'/"\\\
+"/g' >>$CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  for (key in D) D_is_set[key] = 1
+  FS = ""
+}
+/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ {
+  line = \$ 0
+  split(line, arg, " ")
+  if (arg[1] == "#") {
+    defundef = arg[2]
+    mac1 = arg[3]
+  } else {
+    defundef = substr(arg[1], 2)
+    mac1 = arg[2]
+  }
+  split(mac1, mac2, "(") #)
+  macro = mac2[1]
+  prefix = substr(line, 1, index(line, defundef) - 1)
+  if (D_is_set[macro]) {
+    # Preserve the white space surrounding the "#".
+    print prefix "define", macro P[macro] D[macro]
+    next
+  } else {
+    # Replace #undef with comments.  This is necessary, for example,
+    # in the case of _POSIX_SOURCE, which is predefined and required
+    # on some systems where configure will not decide to define it.
+    if (defundef == "undef") {
+      print "/*", prefix defundef, macro, "*/"
+      next
+    }
+  }
+}
+{ print }
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+  as_fn_error "could not setup config headers machinery" "$LINENO" 5
+fi # test -n "$CONFIG_HEADERS"
+
+
+eval set X "  :F $CONFIG_FILES  :H $CONFIG_HEADERS    :C $CONFIG_COMMANDS"
+shift
+for ac_tag
+do
+  case $ac_tag in
+  :[FHLC]) ac_mode=$ac_tag; continue;;
+  esac
+  case $ac_mode$ac_tag in
+  :[FHL]*:*);;
+  :L* | :C*:*) as_fn_error "invalid tag \`$ac_tag'" "$LINENO" 5;;
+  :[FH]-) ac_tag=-:-;;
+  :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
+  esac
+  ac_save_IFS=$IFS
+  IFS=:
+  set x $ac_tag
+  IFS=$ac_save_IFS
+  shift
+  ac_file=$1
+  shift
+
+  case $ac_mode in
+  :L) ac_source=$1;;
+  :[FH])
+    ac_file_inputs=
+    for ac_f
+    do
+      case $ac_f in
+      -) ac_f="$tmp/stdin";;
+      *) # Look for the file first in the build tree, then in the source tree
+	 # (if the path is not absolute).  The absolute path cannot be DOS-style,
+	 # because $ac_f cannot contain `:'.
+	 test -f "$ac_f" ||
+	   case $ac_f in
+	   [\\/$]*) false;;
+	   *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
+	   esac ||
+	   as_fn_error "cannot find input file: \`$ac_f'" "$LINENO" 5;;
+      esac
+      case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
+      as_fn_append ac_file_inputs " '$ac_f'"
+    done
+
+    # Let's still pretend it is `configure' which instantiates (i.e., don't
+    # use $as_me), people would be surprised to read:
+    #    /* config.h.  Generated by config.status.  */
+    configure_input='Generated from '`
+	  $as_echo "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
+	`' by configure.'
+    if test x"$ac_file" != x-; then
+      configure_input="$ac_file.  $configure_input"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
+$as_echo "$as_me: creating $ac_file" >&6;}
+    fi
+    # Neutralize special characters interpreted by sed in replacement strings.
+    case $configure_input in #(
+    *\&* | *\|* | *\\* )
+       ac_sed_conf_input=`$as_echo "$configure_input" |
+       sed 's/[\\\\&|]/\\\\&/g'`;; #(
+    *) ac_sed_conf_input=$configure_input;;
+    esac
+
+    case $ac_tag in
+    *:-:* | *:-) cat >"$tmp/stdin" \
+      || as_fn_error "could not create $ac_file" "$LINENO" 5 ;;
+    esac
+    ;;
+  esac
+
+  ac_dir=`$as_dirname -- "$ac_file" ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  as_dir="$ac_dir"; as_fn_mkdir_p
+  ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+
+  case $ac_mode in
+  :F)
+  #
+  # CONFIG_FILE
+  #
+
+  case $INSTALL in
+  [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
+  *) ac_INSTALL=$ac_top_build_prefix$INSTALL ;;
+  esac
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# If the template does not know about datarootdir, expand it.
+# FIXME: This hack should be removed a few years after 2.60.
+ac_datarootdir_hack=; ac_datarootdir_seen=
+ac_sed_dataroot='
+/datarootdir/ {
+  p
+  q
+}
+/@datadir@/p
+/@docdir@/p
+/@infodir@/p
+/@localedir@/p
+/@mandir@/p'
+case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in
+*datarootdir*) ac_datarootdir_seen=yes;;
+*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*)
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
+$as_echo "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  ac_datarootdir_hack='
+  s&@datadir@&$datadir&g
+  s&@docdir@&$docdir&g
+  s&@infodir@&$infodir&g
+  s&@localedir@&$localedir&g
+  s&@mandir@&$mandir&g
+  s&\\\${datarootdir}&$datarootdir&g' ;;
+esac
+_ACEOF
+
+# Neutralize VPATH when `$srcdir' = `.'.
+# Shell code in configure.ac might set extrasub.
+# FIXME: do we really want to maintain this feature?
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_sed_extra="$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s|@configure_input@|$ac_sed_conf_input|;t t
+s&@top_builddir@&$ac_top_builddir_sub&;t t
+s&@top_build_prefix@&$ac_top_build_prefix&;t t
+s&@srcdir@&$ac_srcdir&;t t
+s&@abs_srcdir@&$ac_abs_srcdir&;t t
+s&@top_srcdir@&$ac_top_srcdir&;t t
+s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t
+s&@builddir@&$ac_builddir&;t t
+s&@abs_builddir@&$ac_abs_builddir&;t t
+s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
+s&@INSTALL@&$ac_INSTALL&;t t
+$ac_datarootdir_hack
+"
+eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$tmp/subs.awk" >$tmp/out \
+  || as_fn_error "could not create $ac_file" "$LINENO" 5
+
+test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
+  { ac_out=`sed -n '/\${datarootdir}/p' "$tmp/out"`; test -n "$ac_out"; } &&
+  { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' "$tmp/out"`; test -z "$ac_out"; } &&
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined." >&5
+$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined." >&2;}
+
+  rm -f "$tmp/stdin"
+  case $ac_file in
+  -) cat "$tmp/out" && rm -f "$tmp/out";;
+  *) rm -f "$ac_file" && mv "$tmp/out" "$ac_file";;
+  esac \
+  || as_fn_error "could not create $ac_file" "$LINENO" 5
+ ;;
+  :H)
+  #
+  # CONFIG_HEADER
+  #
+  if test x"$ac_file" != x-; then
+    {
+      $as_echo "/* $configure_input  */" \
+      && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs"
+    } >"$tmp/config.h" \
+      || as_fn_error "could not create $ac_file" "$LINENO" 5
+    if diff "$ac_file" "$tmp/config.h" >/dev/null 2>&1; then
+      { $as_echo "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
+$as_echo "$as_me: $ac_file is unchanged" >&6;}
+    else
+      rm -f "$ac_file"
+      mv "$tmp/config.h" "$ac_file" \
+	|| as_fn_error "could not create $ac_file" "$LINENO" 5
+    fi
+  else
+    $as_echo "/* $configure_input  */" \
+      && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs" \
+      || as_fn_error "could not create -" "$LINENO" 5
+  fi
+ ;;
+
+  :C)  { $as_echo "$as_me:${as_lineno-$LINENO}: executing $ac_file commands" >&5
+$as_echo "$as_me: executing $ac_file commands" >&6;}
+ ;;
+  esac
+
+
+  case $ac_file$ac_mode in
+    "default-1":C)
+# Only add multilib support code if we just rebuilt the top-level
+# Makefile.
+case " $CONFIG_FILES " in
+ *" Makefile "*)
+   ac_file=Makefile . ${multi_basedir}/config-ml.in
+   ;;
+esac ;;
+    "libtool":C)
+
+    # See if we are running on zsh, and set the options which allow our
+    # commands through without removal of \ escapes.
+    if test -n "${ZSH_VERSION+set}" ; then
+      setopt NO_GLOB_SUBST
+    fi
+
+    cfgfile="${ofile}T"
+    trap "$RM \"$cfgfile\"; exit 1" 1 2 15
+    $RM "$cfgfile"
+
+    cat <<_LT_EOF >> "$cfgfile"
+#! $SHELL
+
+# `$ECHO "$ofile" | sed 's%^.*/%%'` - Provide generalized library-building support services.
+# Generated automatically by $as_me ($PACKAGE$TIMESTAMP) $VERSION
+# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+# NOTE: Changes made to this file will be lost: look at ltmain.sh.
+#
+#   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+#                 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+#   Written by Gordon Matzigkeit, 1996
+#
+#   This file is part of GNU Libtool.
+#
+# GNU Libtool is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# As a special exception to the GNU General Public License,
+# if you distribute this file as part of a program or library that
+# is built using GNU Libtool, you may include this file under the
+# same distribution terms that you use for the rest of that program.
+#
+# GNU Libtool is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING.  If not, a copy
+# can be downloaded from http://www.gnu.org/licenses/gpl.html, or
+# obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+
+# The names of the tagged configurations supported by this script.
+available_tags=""
+
+# ### BEGIN LIBTOOL CONFIG
+
+# Assembler program.
+AS=$lt_AS
+
+# DLL creation program.
+DLLTOOL=$lt_DLLTOOL
+
+# Object dumper program.
+OBJDUMP=$lt_OBJDUMP
+
+# Which release of libtool.m4 was used?
+macro_version=$macro_version
+macro_revision=$macro_revision
+
+# Whether or not to build shared libraries.
+build_libtool_libs=$enable_shared
+
+# Whether or not to build static libraries.
+build_old_libs=$enable_static
+
+# What type of objects to build.
+pic_mode=$pic_mode
+
+# Whether or not to optimize for fast installation.
+fast_install=$enable_fast_install
+
+# Shell to use when invoking shell scripts.
+SHELL=$lt_SHELL
+
+# An echo program that protects backslashes.
+ECHO=$lt_ECHO
+
+# The host system.
+host_alias=$host_alias
+host=$host
+host_os=$host_os
+
+# The build system.
+build_alias=$build_alias
+build=$build
+build_os=$build_os
+
+# A sed program that does not truncate output.
+SED=$lt_SED
+
+# Sed that helps us avoid accidentally triggering echo(1) options like -n.
+Xsed="\$SED -e 1s/^X//"
+
+# A grep program that handles long lines.
+GREP=$lt_GREP
+
+# An ERE matcher.
+EGREP=$lt_EGREP
+
+# A literal string matcher.
+FGREP=$lt_FGREP
+
+# A BSD- or MS-compatible name lister.
+NM=$lt_NM
+
+# Whether we need soft or hard links.
+LN_S=$lt_LN_S
+
+# What is the maximum length of a command?
+max_cmd_len=$max_cmd_len
+
+# Object file suffix (normally "o").
+objext=$ac_objext
+
+# Executable file suffix (normally "").
+exeext=$exeext
+
+# whether the shell understands "unset".
+lt_unset=$lt_unset
+
+# turn spaces into newlines.
+SP2NL=$lt_lt_SP2NL
+
+# turn newlines into spaces.
+NL2SP=$lt_lt_NL2SP
+
+# Method to check whether dependent libraries are shared objects.
+deplibs_check_method=$lt_deplibs_check_method
+
+# Command to use when deplibs_check_method == "file_magic".
+file_magic_cmd=$lt_file_magic_cmd
+
+# The archiver.
+AR=$lt_AR
+AR_FLAGS=$lt_AR_FLAGS
+
+# A symbol stripping program.
+STRIP=$lt_STRIP
+
+# Commands used to install an old-style archive.
+RANLIB=$lt_RANLIB
+old_postinstall_cmds=$lt_old_postinstall_cmds
+old_postuninstall_cmds=$lt_old_postuninstall_cmds
+
+# Whether to use a lock for old archive extraction.
+lock_old_archive_extraction=$lock_old_archive_extraction
+
+# A C compiler.
+LTCC=$lt_CC
+
+# LTCC compiler flags.
+LTCFLAGS=$lt_CFLAGS
+
+# Take the output of nm and produce a listing of raw symbols and C names.
+global_symbol_pipe=$lt_lt_cv_sys_global_symbol_pipe
+
+# Transform the output of nm in a proper C declaration.
+global_symbol_to_cdecl=$lt_lt_cv_sys_global_symbol_to_cdecl
+
+# Transform the output of nm in a C name address pair.
+global_symbol_to_c_name_address=$lt_lt_cv_sys_global_symbol_to_c_name_address
+
+# Transform the output of nm in a C name address pair when lib prefix is needed.
+global_symbol_to_c_name_address_lib_prefix=$lt_lt_cv_sys_global_symbol_to_c_name_address_lib_prefix
+
+# The name of the directory that contains temporary libtool files.
+objdir=$objdir
+
+# Used to examine libraries when file_magic_cmd begins with "file".
+MAGIC_CMD=$MAGIC_CMD
+
+# Must we lock files when doing compilation?
+need_locks=$lt_need_locks
+
+# Tool to manipulate archived DWARF debug symbol files on Mac OS X.
+DSYMUTIL=$lt_DSYMUTIL
+
+# Tool to change global to local symbols on Mac OS X.
+NMEDIT=$lt_NMEDIT
+
+# Tool to manipulate fat objects and archives on Mac OS X.
+LIPO=$lt_LIPO
+
+# ldd/readelf like tool for Mach-O binaries on Mac OS X.
+OTOOL=$lt_OTOOL
+
+# ldd/readelf like tool for 64 bit Mach-O binaries on Mac OS X 10.4.
+OTOOL64=$lt_OTOOL64
+
+# Old archive suffix (normally "a").
+libext=$libext
+
+# Shared library suffix (normally ".so").
+shrext_cmds=$lt_shrext_cmds
+
+# The commands to extract the exported symbol list from a shared archive.
+extract_expsyms_cmds=$lt_extract_expsyms_cmds
+
+# Variables whose values should be saved in libtool wrapper scripts and
+# restored at link time.
+variables_saved_for_relink=$lt_variables_saved_for_relink
+
+# Do we need the "lib" prefix for modules?
+need_lib_prefix=$need_lib_prefix
+
+# Do we need a version for libraries?
+need_version=$need_version
+
+# Library versioning type.
+version_type=$version_type
+
+# Shared library runtime path variable.
+runpath_var=$runpath_var
+
+# Shared library path variable.
+shlibpath_var=$shlibpath_var
+
+# Is shlibpath searched before the hard-coded library search path?
+shlibpath_overrides_runpath=$shlibpath_overrides_runpath
+
+# Format of library name prefix.
+libname_spec=$lt_libname_spec
+
+# List of archive names.  First name is the real one, the rest are links.
+# The last name is the one that the linker finds with -lNAME
+library_names_spec=$lt_library_names_spec
+
+# The coded name of the library, if different from the real name.
+soname_spec=$lt_soname_spec
+
+# Permission mode override for installation of shared libraries.
+install_override_mode=$lt_install_override_mode
+
+# Command to use after installation of a shared archive.
+postinstall_cmds=$lt_postinstall_cmds
+
+# Command to use after uninstallation of a shared archive.
+postuninstall_cmds=$lt_postuninstall_cmds
+
+# Commands used to finish a libtool library installation in a directory.
+finish_cmds=$lt_finish_cmds
+
+# As "finish_cmds", except a single script fragment to be evaled but
+# not shown.
+finish_eval=$lt_finish_eval
+
+# Whether we should hardcode library paths into libraries.
+hardcode_into_libs=$hardcode_into_libs
+
+# Compile-time system search path for libraries.
+sys_lib_search_path_spec=$lt_sys_lib_search_path_spec
+
+# Run-time system search path for libraries.
+sys_lib_dlsearch_path_spec=$lt_sys_lib_dlsearch_path_spec
+
+# Whether dlopen is supported.
+dlopen_support=$enable_dlopen
+
+# Whether dlopen of programs is supported.
+dlopen_self=$enable_dlopen_self
+
+# Whether dlopen of statically linked programs is supported.
+dlopen_self_static=$enable_dlopen_self_static
+
+# Commands to strip libraries.
+old_striplib=$lt_old_striplib
+striplib=$lt_striplib
+
+
+# The linker used to build libraries.
+LD=$lt_LD
+
+# How to create reloadable object files.
+reload_flag=$lt_reload_flag
+reload_cmds=$lt_reload_cmds
+
+# Commands used to build an old-style archive.
+old_archive_cmds=$lt_old_archive_cmds
+
+# A language specific compiler.
+CC=$lt_compiler
+
+# Is the compiler the GNU compiler?
+with_gcc=$GCC
+
+# Compiler flag to turn off builtin functions.
+no_builtin_flag=$lt_lt_prog_compiler_no_builtin_flag
+
+# How to pass a linker flag through the compiler.
+wl=$lt_lt_prog_compiler_wl
+
+# Additional compiler flags for building library objects.
+pic_flag=$lt_lt_prog_compiler_pic
+
+# Compiler flag to prevent dynamic linking.
+link_static_flag=$lt_lt_prog_compiler_static
+
+# Does compiler simultaneously support -c and -o options?
+compiler_c_o=$lt_lt_cv_prog_compiler_c_o
+
+# Whether or not to add -lc for building shared libraries.
+build_libtool_need_lc=$archive_cmds_need_lc
+
+# Whether or not to disallow shared libs when runtime libs are static.
+allow_libtool_libs_with_static_runtimes=$enable_shared_with_static_runtimes
+
+# Compiler flag to allow reflexive dlopens.
+export_dynamic_flag_spec=$lt_export_dynamic_flag_spec
+
+# Compiler flag to generate shared objects directly from archives.
+whole_archive_flag_spec=$lt_whole_archive_flag_spec
+
+# Whether the compiler copes with passing no objects directly.
+compiler_needs_object=$lt_compiler_needs_object
+
+# Create an old-style archive from a shared archive.
+old_archive_from_new_cmds=$lt_old_archive_from_new_cmds
+
+# Create a temporary old-style archive to link instead of a shared archive.
+old_archive_from_expsyms_cmds=$lt_old_archive_from_expsyms_cmds
+
+# Commands used to build a shared archive.
+archive_cmds=$lt_archive_cmds
+archive_expsym_cmds=$lt_archive_expsym_cmds
+
+# Commands used to build a loadable module if different from building
+# a shared archive.
+module_cmds=$lt_module_cmds
+module_expsym_cmds=$lt_module_expsym_cmds
+
+# Whether we are building with GNU ld or not.
+with_gnu_ld=$lt_with_gnu_ld
+
+# Flag that allows shared libraries with undefined symbols to be built.
+allow_undefined_flag=$lt_allow_undefined_flag
+
+# Flag that enforces no undefined symbols.
+no_undefined_flag=$lt_no_undefined_flag
+
+# Flag to hardcode \$libdir into a binary during linking.
+# This must work even if \$libdir does not exist
+hardcode_libdir_flag_spec=$lt_hardcode_libdir_flag_spec
+
+# If ld is used when linking, flag to hardcode \$libdir into a binary
+# during linking.  This must work even if \$libdir does not exist.
+hardcode_libdir_flag_spec_ld=$lt_hardcode_libdir_flag_spec_ld
+
+# Whether we need a single "-rpath" flag with a separated argument.
+hardcode_libdir_separator=$lt_hardcode_libdir_separator
+
+# Set to "yes" if using DIR/libNAME\${shared_ext} during linking hardcodes
+# DIR into the resulting binary.
+hardcode_direct=$hardcode_direct
+
+# Set to "yes" if using DIR/libNAME\${shared_ext} during linking hardcodes
+# DIR into the resulting binary and the resulting library dependency is
+# "absolute",i.e impossible to change by setting \${shlibpath_var} if the
+# library is relocated.
+hardcode_direct_absolute=$hardcode_direct_absolute
+
+# Set to "yes" if using the -LDIR flag during linking hardcodes DIR
+# into the resulting binary.
+hardcode_minus_L=$hardcode_minus_L
+
+# Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR
+# into the resulting binary.
+hardcode_shlibpath_var=$hardcode_shlibpath_var
+
+# Set to "yes" if building a shared library automatically hardcodes DIR
+# into the library and all subsequent libraries and executables linked
+# against it.
+hardcode_automatic=$hardcode_automatic
+
+# Set to yes if linker adds runtime paths of dependent libraries
+# to runtime path list.
+inherit_rpath=$inherit_rpath
+
+# Whether libtool must link a program against all its dependency libraries.
+link_all_deplibs=$link_all_deplibs
+
+# Fix the shell variable \$srcfile for the compiler.
+fix_srcfile_path=$lt_fix_srcfile_path
+
+# Set to "yes" if exported symbols are required.
+always_export_symbols=$always_export_symbols
+
+# The commands to list exported symbols.
+export_symbols_cmds=$lt_export_symbols_cmds
+
+# Symbols that should not be listed in the preloaded symbols.
+exclude_expsyms=$lt_exclude_expsyms
+
+# Symbols that must always be exported.
+include_expsyms=$lt_include_expsyms
+
+# Commands necessary for linking programs (against libraries) with templates.
+prelink_cmds=$lt_prelink_cmds
+
+# Specify filename containing input files.
+file_list_spec=$lt_file_list_spec
+
+# How to hardcode a shared library path into an executable.
+hardcode_action=$hardcode_action
+
+# ### END LIBTOOL CONFIG
+
+_LT_EOF
+
+  case $host_os in
+  aix3*)
+    cat <<\_LT_EOF >> "$cfgfile"
+# AIX sometimes has problems with the GCC collect2 program.  For some
+# reason, if we set the COLLECT_NAMES environment variable, the problems
+# vanish in a puff of smoke.
+if test "X${COLLECT_NAMES+set}" != Xset; then
+  COLLECT_NAMES=
+  export COLLECT_NAMES
+fi
+_LT_EOF
+    ;;
+  esac
+
+
+ltmain="$ac_aux_dir/ltmain.sh"
+
+
+  # We use sed instead of cat because bash on DJGPP gets confused if
+  # if finds mixed CR/LF and LF-only lines.  Since sed operates in
+  # text mode, it properly converts lines to CR/LF.  This bash problem
+  # is reportedly fixed, but why not run on old versions too?
+  sed '/^# Generated shell functions inserted here/q' "$ltmain" >> "$cfgfile" \
+    || (rm -f "$cfgfile"; exit 1)
+
+  case $xsi_shell in
+  yes)
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE.  If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+  case ${1} in
+    */*) func_dirname_result="${1%/*}${2}" ;;
+    *  ) func_dirname_result="${3}" ;;
+  esac
+}
+
+# func_basename file
+func_basename ()
+{
+  func_basename_result="${1##*/}"
+}
+
+# func_dirname_and_basename file append nondir_replacement
+# perform func_basename and func_dirname in a single function
+# call:
+#   dirname:  Compute the dirname of FILE.  If nonempty,
+#             add APPEND to the result, otherwise set result
+#             to NONDIR_REPLACEMENT.
+#             value returned in "$func_dirname_result"
+#   basename: Compute filename of FILE.
+#             value retuned in "$func_basename_result"
+# Implementation must be kept synchronized with func_dirname
+# and func_basename. For efficiency, we do not delegate to
+# those functions but instead duplicate the functionality here.
+func_dirname_and_basename ()
+{
+  case ${1} in
+    */*) func_dirname_result="${1%/*}${2}" ;;
+    *  ) func_dirname_result="${3}" ;;
+  esac
+  func_basename_result="${1##*/}"
+}
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+func_stripname ()
+{
+  # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are
+  # positional parameters, so assign one to ordinary parameter first.
+  func_stripname_result=${3}
+  func_stripname_result=${func_stripname_result#"${1}"}
+  func_stripname_result=${func_stripname_result%"${2}"}
+}
+
+# func_opt_split
+func_opt_split ()
+{
+  func_opt_split_opt=${1%%=*}
+  func_opt_split_arg=${1#*=}
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+  case ${1} in
+    *.lo) func_lo2o_result=${1%.lo}.${objext} ;;
+    *)    func_lo2o_result=${1} ;;
+  esac
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+  func_xform_result=${1%.*}.lo
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+  func_arith_result=$(( $* ))
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+  func_len_result=${#1}
+}
+
+_LT_EOF
+    ;;
+  *) # Bourne compatible functions.
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE.  If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+  # Extract subdirectory from the argument.
+  func_dirname_result=`$ECHO "${1}" | $SED "$dirname"`
+  if test "X$func_dirname_result" = "X${1}"; then
+    func_dirname_result="${3}"
+  else
+    func_dirname_result="$func_dirname_result${2}"
+  fi
+}
+
+# func_basename file
+func_basename ()
+{
+  func_basename_result=`$ECHO "${1}" | $SED "$basename"`
+}
+
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+# func_strip_suffix prefix name
+func_stripname ()
+{
+  case ${2} in
+    .*) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%\\\\${2}\$%%"`;;
+    *)  func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%${2}\$%%"`;;
+  esac
+}
+
+# sed scripts:
+my_sed_long_opt='1s/^\(-[^=]*\)=.*/\1/;q'
+my_sed_long_arg='1s/^-[^=]*=//'
+
+# func_opt_split
+func_opt_split ()
+{
+  func_opt_split_opt=`$ECHO "${1}" | $SED "$my_sed_long_opt"`
+  func_opt_split_arg=`$ECHO "${1}" | $SED "$my_sed_long_arg"`
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+  func_lo2o_result=`$ECHO "${1}" | $SED "$lo2o"`
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+  func_xform_result=`$ECHO "${1}" | $SED 's/\.[^.]*$/.lo/'`
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+  func_arith_result=`expr "$@"`
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+  func_len_result=`expr "$1" : ".*" 2>/dev/null || echo $max_cmd_len`
+}
+
+_LT_EOF
+esac
+
+case $lt_shell_append in
+  yes)
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+  eval "$1+=\$2"
+}
+_LT_EOF
+    ;;
+  *)
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+  eval "$1=\$$1\$2"
+}
+
+_LT_EOF
+    ;;
+  esac
+
+
+  sed -n '/^# Generated shell functions inserted here/,$p' "$ltmain" >> "$cfgfile" \
+    || (rm -f "$cfgfile"; exit 1)
+
+  mv -f "$cfgfile" "$ofile" ||
+    (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
+  chmod +x "$ofile"
+
+ ;;
+
+  esac
+done # for ac_tag
+
+
+as_fn_exit 0
+_ACEOF
+ac_clean_files=$ac_clean_files_save
+
+test $ac_write_fail = 0 ||
+  as_fn_error "write failure creating $CONFIG_STATUS" "$LINENO" 5
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded.  So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status.  When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+  ac_cs_success=:
+  ac_config_status_args=
+  test "$silent" = yes &&
+    ac_config_status_args="$ac_config_status_args --quiet"
+  exec 5>/dev/null
+  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+  exec 5>>config.log
+  # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+  # would make configure fail if this is the last instruction.
+  $ac_cs_success || as_fn_exit $?
+fi
+if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
+$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
+fi
+
diff --git a/libobjc/configure.ac b/libobjc/configure.ac
new file mode 100644
index 000000000..494a289ec
--- /dev/null
+++ b/libobjc/configure.ac
@@ -0,0 +1,287 @@
+# Process this file with autoconf to produce a configure script.
+#   Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004
+#   2005, 2006, 2009 Free Software Foundation, Inc.
+#   Originally contributed by Dave Love (d.love@dl.ac.uk).
+#
+#This file is part of GCC.
+#
+#GCC is free software; you can redistribute it and/or modify
+#it under the terms of the GNU General Public License as published by
+#the Free Software Foundation; either version 3, or (at your option)
+#any later version.
+#
+#GCC is distributed in the hope that it will be useful,
+#but WITHOUT ANY WARRANTY; without even the implied warranty of
+#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#GNU General Public License for more details.
+#
+#You should have received a copy of the GNU General Public License
+#along with GCC; see the file COPYING3.  If not see
+#<http://www.gnu.org/licenses/>.
+
+AC_PREREQ(2.64)
+AC_INIT(package-unused, version-unused,, libobjc)
+AC_CONFIG_SRCDIR([objc/objc.h])
+GCC_TOPLEV_SUBDIRS
+
+# We need the following definitions because AC_PROG_LIBTOOL relies on them
+PACKAGE=libobjc
+# Version is pulled out to make it a bit easier to change using sed.
+VERSION=3:0:0
+AC_SUBST(VERSION)
+
+# This works around the fact that libtool configuration may change LD
+# for this particular configuration, but some shells, instead of
+# keeping the changes in LD private, export them just because LD is
+# exported.
+ORIGINAL_LD_FOR_MULTILIBS=$LD
+
+# -------
+# Options
+# -------
+
+# We use these options to decide which functions to include.
+AC_ARG_WITH(target-subdir,
+[  --with-target-subdir=SUBDIR
+                           configuring in a subdirectory])
+AC_ARG_WITH(cross-host,
+[  --with-cross-host=HOST  configuring with a cross compiler])
+
+AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
+AC_ARG_ENABLE(version-specific-runtime-libs,
+[  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
+[case "$enableval" in
+ yes) version_specific_libs=yes ;;
+ no)  version_specific_libs=no ;;
+ *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
+ esac],
+[version_specific_libs=no])
+AC_MSG_RESULT($version_specific_libs)
+
+AC_ARG_ENABLE(objc-gc,
+[  --enable-objc-gc       enable the use of Boehm's garbage collector with
+                          the GNU Objective-C runtime.],
+[case $enable_objc_gc in
+  no)
+    OBJC_BOEHM_GC=''
+    OBJC_BOEHM_GC_INCLUDES=''
+    ;;
+  *)
+    OBJC_BOEHM_GC=libobjc_gc.la
+    OBJC_BOEHM_GC_INCLUDES='-I$(top_srcdir)/../boehm-gc/include -I../boehm-gc/include'
+    ;;
+esac],
+[OBJC_BOEHM_GC=''; OBJC_BOEHM_GC_INCLUDES=''])
+AC_SUBST(OBJC_BOEHM_GC)
+AC_SUBST(OBJC_BOEHM_GC_INCLUDES)
+
+# -----------
+# Directories
+# -----------
+
+# Find the rest of the source tree framework.
+AM_ENABLE_MULTILIB(, ..)
+
+AC_CANONICAL_SYSTEM
+ACX_NONCANONICAL_TARGET
+
+# Export source directory.
+# These need to be absolute paths, yet at the same time need to
+# canonicalize only relative paths, because then amd will not unmount
+# drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
+case $srcdir in
+  [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
+  *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
+esac
+AC_SUBST(glibcpp_srcdir)
+
+# Calculate toolexeclibdir
+# Also toolexecdir, though it's only used in toolexeclibdir
+case ${version_specific_libs} in
+  yes)
+    # Need the gcc compiler version to know where to install libraries
+    # and header files if --enable-version-specific-runtime-libs option
+    # is selected.
+    toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
+    toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
+    ;;
+  no)
+    if test -n "$with_cross_host" &&
+       test x"$with_cross_host" != x"no"; then
+      # Install a library built with a cross compiler in tooldir, not libdir.
+      toolexecdir='$(exec_prefix)/$(target_noncanonical)'
+      toolexeclibdir='$(toolexecdir)/lib'
+    else
+      toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
+      toolexeclibdir='$(libdir)'
+    fi
+    multi_os_directory=`$CC -print-multi-os-directory`
+    case $multi_os_directory in
+      .) ;; # Avoid trailing /.
+      *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
+    esac
+    ;;
+esac
+AC_SUBST(toolexecdir)
+AC_SUBST(toolexeclibdir)
+
+# Figure out if we want to name the include directory and the
+#  library name changes differently.
+includedirname=include
+libsuffix=
+case "${host}" in
+  *-darwin*)
+    # Darwin is the only target so far that needs a different include directory.
+    includedirname=include-gnu-runtime
+    libsuffix=-gnu
+    ;;
+esac
+AC_SUBST(includedirname)
+AC_SUBST(libsuffix)
+
+AC_CONFIG_HEADERS(config.h)
+
+# --------
+# Programs
+# --------
+
+GCC_NO_EXECUTABLES
+
+# We must force CC to /not/ be a precious variable; otherwise
+# the wrong, non-multilib-adjusted value will be used in multilibs.
+# As a side effect, we have to subst CFLAGS ourselves.
+m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
+m4_define([_AC_ARG_VAR_PRECIOUS],[])
+AC_PROG_CC
+m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
+
+# extra LD Flags which are required for targets
+ACX_LT_HOST_FLAGS
+case "${host}" in
+  *-darwin*)
+    # Darwin needs -single_module when linking libobjc
+    extra_ldflags_libobjc='$(lt_host_flags) -Wl,-single_module'
+    ;;
+  *-cygwin*|*-mingw*)
+    # Tell libtool to build DLLs on Windows
+    extra_ldflags_libobjc='$(lt_host_flags)'
+    ;;
+esac
+AC_SUBST(extra_ldflags_libobjc)
+
+AC_SUBST(CFLAGS)
+
+AC_CHECK_TOOL(AS, as)
+AC_CHECK_TOOL(AR, ar)
+AC_CHECK_TOOL(RANLIB, ranlib, :)
+AC_PROG_INSTALL
+
+AM_MAINTAINER_MODE
+
+# Enable Win32 DLL on MS Windows - FIXME
+AC_LIBTOOL_WIN32_DLL
+
+AC_PROG_LIBTOOL
+
+AM_PROG_CC_C_O
+
+AC_PROG_MAKE_SET
+
+# -------
+# Headers
+# -------
+
+# Sanity check for the cross-compilation case:
+AC_CHECK_HEADER(stdio.h,:,
+  [AC_MSG_ERROR([Can't find stdio.h.
+You must have a usable C system for the target already installed, at least
+including headers and, preferably, the library, before you can configure
+the Objective C runtime system.  If necessary, install gcc now with 
+\`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])])
+
+AC_HEADER_STDC
+
+AC_CHECK_HEADERS(sched.h)
+
+# -----------
+# Miscellanea
+# -----------
+
+AC_MSG_CHECKING([for thread model used by GCC])
+target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
+AC_MSG_RESULT([$target_thread_file]) 
+
+if test $target_thread_file != single; then
+  AC_DEFINE(HAVE_GTHR_DEFAULT, 1,
+        [Define if the compiler has a thread header that is non single.])
+fi 
+
+# Check if we have thread-local storage
+GCC_CHECK_TLS
+
+AC_MSG_CHECKING([for exception model to use])
+AC_LANG_PUSH(C)
+AC_ARG_ENABLE(sjlj-exceptions,
+  AS_HELP_STRING([--enable-sjlj-exceptions],
+                 [force use of builtin_setjmp for exceptions]),
+[:],
+[dnl Botheration.  Now we've got to detect the exception model.
+dnl Link tests against libgcc.a are problematic since -- at least
+dnl as of this writing -- we've not been given proper -L bits for
+dnl single-tree newlib and libgloss.
+dnl
+dnl This is what AC_TRY_COMPILE would do if it didn't delete the
+dnl conftest files before we got a change to grep them first.
+cat > conftest.$ac_ext << EOF
+[#]line __oline__ "configure"
+@interface Frob
+@end
+@implementation Frob
+@end
+int proc();
+int foo()
+{
+  @try {
+   return proc();
+  }
+  @catch (Frob* ex) {
+    return 0;
+  }
+}
+EOF
+old_CFLAGS="$CFLAGS" 
+dnl work around that we don't have Objective-C support in autoconf
+CFLAGS="-x objective-c -fgnu-runtime -fobjc-exceptions -S"
+if AC_TRY_EVAL(ac_compile); then
+  if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
+    enable_sjlj_exceptions=yes
+  elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
+    enable_sjlj_exceptions=no
+  fi
+fi
+CFLAGS="$old_CFLAGS"
+rm -f conftest*])
+if test x$enable_sjlj_exceptions = xyes; then
+  AC_DEFINE(SJLJ_EXCEPTIONS, 1,
+	[Define if the compiler is configured for setjmp/longjmp exceptions.])
+  ac_exception_model_name=sjlj
+elif test x$enable_sjlj_exceptions = xno; then
+  ac_exception_model_name="call frame"
+else
+  AC_MSG_ERROR([unable to detect exception model])
+fi
+AC_LANG_POP(C)
+AC_MSG_RESULT($ac_exception_model_name)
+
+# ------
+# Output
+# ------
+
+if test ${multilib} = yes; then
+  multilib_arg="--enable-multilib"
+else
+  multilib_arg=
+fi
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT
diff --git a/libobjc/encoding.c b/libobjc/encoding.c
new file mode 100644
index 000000000..985ba0771
--- /dev/null
+++ b/libobjc/encoding.c
@@ -0,0 +1,1341 @@
+/* Encoding of types for Objective C.
+   Copyright (C) 1993, 1995, 1996, 1997, 1998, 2000, 2002, 2004, 2009, 2010
+   Free Software Foundation, Inc.
+   Contributed by Kresten Krab Thorup
+   Bitfield support by Ovidiu Predescu
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+/* FIXME: This file has no business including tm.h.  */
+
+/* FIXME: This file contains functions that will abort the entire
+   program if they fail.  Is that really needed ?  */
+
+#include "objc-private/common.h"
+#include "objc-private/error.h"
+#include "tconfig.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "objc/runtime.h"
+#include "objc-private/module-abi-8.h" /* For struct objc_method */
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>                    /* For memcpy.  */
+
+#undef  MAX
+#define MAX(X, Y)                    \
+  ({ typeof (X) __x = (X), __y = (Y); \
+     (__x > __y ? __x : __y); })
+
+#undef  MIN
+#define MIN(X, Y)                    \
+  ({ typeof (X) __x = (X), __y = (Y); \
+     (__x < __y ? __x : __y); })
+
+#undef  ROUND
+#define ROUND(V, A) \
+  ({ typeof (V) __v = (V); typeof (A) __a = (A); \
+     __a * ((__v+__a - 1)/__a); })
+
+
+/* Various hacks for objc_layout_record. These are used by the target
+   macros. */
+
+#define TREE_CODE(TYPE) *(TYPE)
+#define TREE_TYPE(TREE) (TREE)
+
+#define RECORD_TYPE     _C_STRUCT_B
+#define UNION_TYPE      _C_UNION_B
+#define QUAL_UNION_TYPE _C_UNION_B
+#define ARRAY_TYPE      _C_ARY_B
+
+#define REAL_TYPE       _C_DBL
+
+#define VECTOR_TYPE	_C_VECTOR
+
+#define TYPE_FIELDS(TYPE)           ({const char *_field = (TYPE)+1; \
+    while (*_field != _C_STRUCT_E && *_field != _C_STRUCT_B \
+           && *_field != _C_UNION_B && *_field++ != '=') \
+    /* do nothing */; \
+    _field;})
+
+#define DECL_MODE(TYPE) *(TYPE)
+#define TYPE_MODE(TYPE) *(TYPE)
+
+#define DFmode          _C_DBL
+
+#define strip_array_types(TYPE)      ({const char *_field = (TYPE); \
+  while (*_field == _C_ARY_B)\
+    {\
+      while (isdigit ((unsigned char)*++_field))\
+	;\
+    }\
+    _field;})
+
+/* Some ports (eg ARM) allow the structure size boundary to be
+   selected at compile-time.  We override the normal definition with
+   one that has a constant value for this compilation.  */
+#ifndef BITS_PER_UNIT
+#define BITS_PER_UNIT 8
+#endif
+#undef  STRUCTURE_SIZE_BOUNDARY
+#define STRUCTURE_SIZE_BOUNDARY (BITS_PER_UNIT * sizeof (struct{char a;}))
+
+/* Some ROUND_TYPE_ALIGN macros use TARGET_foo, and consequently
+   target_flags.  Define a dummy entry here to so we don't die.
+   We have to rename it because target_flags may already have been
+   declared extern.  */
+#define target_flags not_target_flags
+static int __attribute__ ((__unused__)) not_target_flags = 0;
+
+/* Some ROUND_TYPE_ALIGN use ALTIVEC_VECTOR_MODE (rs6000 darwin).
+   Define a dummy ALTIVEC_VECTOR_MODE so it will not die.  */
+#undef ALTIVEC_VECTOR_MODE
+#define ALTIVEC_VECTOR_MODE(MODE) (0)
+
+/* Furthermore, some (powerpc) targets also use TARGET_ALIGN_NATURAL
+ in their alignment macros. Currently[4.5/6], rs6000.h points this
+ to a static variable, initialized by target overrides. This is reset
+ in linux64.h but not in darwin64.h.  The macro is not used by *86*.  */
+
+#if __MACH__ 
+# if __LP64__
+#  undef TARGET_ALIGN_NATURAL
+#  define TARGET_ALIGN_NATURAL 1
+# endif
+
+/* On Darwin32, we need to recurse until we find the starting stuct type.  */
+static int 
+_darwin_rs6000_special_round_type_align (const char *struc, int comp, int spec)
+{
+  const char *_stp , *_fields = TYPE_FIELDS (struc);
+  if (!_fields)
+    return MAX (comp, spec);
+  _stp = strip_array_types (_fields);
+  if (TYPE_MODE(_stp) == _C_COMPLEX)
+   _stp++;
+  switch (TYPE_MODE(_stp))
+    {
+      case RECORD_TYPE:
+      case UNION_TYPE:
+	return MAX (MAX (comp, spec), objc_alignof_type (_stp) * BITS_PER_UNIT);
+	break;
+      case DFmode:
+      case _C_LNG_LNG:
+      case _C_ULNG_LNG:
+	return MAX (MAX (comp, spec), 64);
+	break;
+
+      default:
+	return MAX (comp, spec);
+	break;
+    }
+}
+
+/* See comment below.  */
+#define darwin_rs6000_special_round_type_align(S,C,S2)			\
+  (_darwin_rs6000_special_round_type_align ((char*)(S), (int)(C), (int)(S2)))
+#endif
+
+/*  FIXME: while this file has no business including tm.h, this
+    definitely has no business defining this macro but it
+    is only way around without really rewritting this file,
+    should look after the branch of 3.4 to fix this.   */
+#define rs6000_special_round_type_align(STRUCT, COMPUTED, SPECIFIED)	\
+  ({ const char *_fields = TYPE_FIELDS (STRUCT);			\
+  ((_fields != 0							\
+    && TYPE_MODE (strip_array_types (TREE_TYPE (_fields))) == DFmode)	\
+   ? MAX (MAX (COMPUTED, SPECIFIED), 64)				\
+   : MAX (COMPUTED, SPECIFIED));})
+
+
+/* Skip a variable name, enclosed in quotes (").  */
+static inline
+const char *
+objc_skip_variable_name (const char *type)
+{
+  /* Skip the variable name if any.  */
+  if (*type == '"')
+    {
+      /* FIXME: How do we know we won't read beyond the end of the
+	 string.  Here and in the rest of the file!  */
+      /* Skip '"'.  */
+      type++;
+      /* Skip to the next '"'.  */
+      while (*type != '"')
+	type++;
+      /* Skip '"'.  */
+      type++;
+    }
+
+  return type;
+}
+
+int
+objc_sizeof_type (const char *type)
+{
+  type = objc_skip_variable_name (type);
+
+  switch (*type) {
+  case _C_BOOL:
+    return sizeof (_Bool);
+    break;
+
+  case _C_ID:
+    return sizeof (id);
+    break;
+
+  case _C_CLASS:
+    return sizeof (Class);
+    break;
+
+  case _C_SEL:
+    return sizeof (SEL);
+    break;
+
+  case _C_CHR:
+    return sizeof (char);
+    break;
+
+  case _C_UCHR:
+    return sizeof (unsigned char);
+    break;
+
+  case _C_SHT:
+    return sizeof (short);
+    break;
+
+  case _C_USHT:
+    return sizeof (unsigned short);
+    break;
+
+  case _C_INT:
+    return sizeof (int);
+    break;
+
+  case _C_UINT:
+    return sizeof (unsigned int);
+    break;
+
+  case _C_LNG:
+    return sizeof (long);
+    break;
+
+  case _C_ULNG:
+    return sizeof (unsigned long);
+    break;
+
+  case _C_LNG_LNG:
+    return sizeof (long long);
+    break;
+
+  case _C_ULNG_LNG:
+    return sizeof (unsigned long long);
+    break;
+
+  case _C_FLT:
+    return sizeof (float);
+    break;
+
+  case _C_DBL:
+    return sizeof (double);
+    break;
+
+  case _C_LNG_DBL:
+    return sizeof (long double);
+    break;
+
+  case _C_VOID:
+    return sizeof (void);
+    break;
+
+  case _C_PTR:
+  case _C_ATOM:
+  case _C_CHARPTR:
+    return sizeof (char *);
+    break;
+
+  case _C_ARY_B:
+    {
+      int len = atoi (type + 1);
+      while (isdigit ((unsigned char)*++type))
+	;
+      return len * objc_aligned_size (type);
+    }
+    break;
+
+  case _C_VECTOR:
+    {
+      /* Skip the '!'.  */
+      type++;
+      /* Skip the '['.  */
+      type++;
+
+      /* The size in bytes is the following number.  */
+      int size = atoi (type);
+      return size;
+    }
+    break;
+
+  case _C_BFLD:
+    {
+      /* The GNU encoding of bitfields is: b 'position' 'type'
+	 'size'.  */
+      int position, size;
+      int startByte, endByte;
+
+      position = atoi (type + 1);
+      while (isdigit ((unsigned char)*++type))
+	;
+      size = atoi (type + 1);
+
+      startByte = position / BITS_PER_UNIT;
+      endByte = (position + size) / BITS_PER_UNIT;
+      return endByte - startByte;
+    }
+
+  case _C_UNION_B:
+  case _C_STRUCT_B:
+    {
+      struct objc_struct_layout layout;
+      unsigned int size;
+
+      objc_layout_structure (type, &layout);
+      while (objc_layout_structure_next_member (&layout))
+        /* do nothing */ ;
+      objc_layout_finish_structure (&layout, &size, NULL);
+
+      return size;
+    }
+    
+  case _C_COMPLEX:
+    {
+      type++; /* Skip after the 'j'. */
+      switch (*type)
+        {
+	    case _C_CHR:
+	      return sizeof (_Complex char);
+	      break;
+
+	    case _C_UCHR:
+	      return sizeof (_Complex unsigned char);
+	      break;
+
+	    case _C_SHT:
+	      return sizeof (_Complex short);
+	      break;
+
+	    case _C_USHT:
+	      return sizeof (_Complex unsigned short);
+	      break;
+
+	    case _C_INT:
+	      return sizeof (_Complex int);
+	      break;
+
+	    case _C_UINT:
+	      return sizeof (_Complex unsigned int);
+	      break;
+
+	    case _C_LNG:
+	      return sizeof (_Complex long);
+	      break;
+
+	    case _C_ULNG:
+	      return sizeof (_Complex unsigned long);
+	      break;
+
+	    case _C_LNG_LNG:
+	      return sizeof (_Complex long long);
+	      break;
+
+	    case _C_ULNG_LNG:
+	      return sizeof (_Complex unsigned long long);
+	      break;
+
+	    case _C_FLT:
+	      return sizeof (_Complex float);
+	      break;
+
+	    case _C_DBL:
+	      return sizeof (_Complex double);
+	      break;
+
+	    case _C_LNG_DBL:
+	      return sizeof (_Complex long double);
+	      break;
+	    
+	    default:
+	      {
+		/* FIXME: Is this so bad that we have to abort the
+		   entire program ?  (it applies to all the other
+		   _objc_abort calls in this file).
+		*/
+		_objc_abort ("unknown complex type %s\n", type);
+		return 0;
+	      }
+	}
+    }
+
+  default:
+    {
+      _objc_abort ("unknown type %s\n", type);
+      return 0;
+    }
+  }
+}
+
+int
+objc_alignof_type (const char *type)
+{
+  type = objc_skip_variable_name (type);
+
+  switch (*type) {
+  case _C_BOOL:
+    return __alignof__ (_Bool);
+    break;
+
+  case _C_ID:
+    return __alignof__ (id);
+    break;
+
+  case _C_CLASS:
+    return __alignof__ (Class);
+    break;
+
+  case _C_SEL:
+    return __alignof__ (SEL);
+    break;
+
+  case _C_CHR:
+    return __alignof__ (char);
+    break;
+
+  case _C_UCHR:
+    return __alignof__ (unsigned char);
+    break;
+
+  case _C_SHT:
+    return __alignof__ (short);
+    break;
+
+  case _C_USHT:
+    return __alignof__ (unsigned short);
+    break;
+
+  case _C_INT:
+    return __alignof__ (int);
+    break;
+
+  case _C_UINT:
+    return __alignof__ (unsigned int);
+    break;
+
+  case _C_LNG:
+    return __alignof__ (long);
+    break;
+
+  case _C_ULNG:
+    return __alignof__ (unsigned long);
+    break;
+
+  case _C_LNG_LNG:
+    return __alignof__ (long long);
+    break;
+
+  case _C_ULNG_LNG:
+    return __alignof__ (unsigned long long);
+    break;
+
+  case _C_FLT:
+    return __alignof__ (float);
+    break;
+
+  case _C_DBL:
+    return __alignof__ (double);
+    break;
+
+  case _C_LNG_DBL:
+    return __alignof__ (long double);
+    break;
+
+  case _C_PTR:
+  case _C_ATOM:
+  case _C_CHARPTR:
+    return __alignof__ (char *);
+    break;
+
+  case _C_ARY_B:
+    while (isdigit ((unsigned char)*++type))
+      /* do nothing */;
+    return objc_alignof_type (type);
+
+  case _C_VECTOR:
+    {   
+      /* Skip the '!'.  */
+      type++;
+      /* Skip the '['.  */
+      type++;
+      
+      /* Skip the size.  */
+      while (isdigit ((unsigned char)*type))
+	type++;
+      
+      /* Skip the ','.  */
+      type++;
+      
+      /* The alignment in bytes is the following number.  */
+      return atoi (type);
+    }
+  case _C_STRUCT_B:
+  case _C_UNION_B:
+    {
+      struct objc_struct_layout layout;
+      unsigned int align;
+
+      objc_layout_structure (type, &layout);
+      while (objc_layout_structure_next_member (&layout))
+        /* do nothing */;
+      objc_layout_finish_structure (&layout, NULL, &align);
+
+      return align;
+    }
+    
+    
+  case _C_COMPLEX:
+    {
+      type++; /* Skip after the 'j'. */
+      switch (*type)
+        {
+	    case _C_CHR:
+	      return __alignof__ (_Complex char);
+	      break;
+
+	    case _C_UCHR:
+	      return __alignof__ (_Complex unsigned char);
+	      break;
+
+	    case _C_SHT:
+	      return __alignof__ (_Complex short);
+	      break;
+
+	    case _C_USHT:
+	      return __alignof__ (_Complex unsigned short);
+	      break;
+
+	    case _C_INT:
+	      return __alignof__ (_Complex int);
+	      break;
+
+	    case _C_UINT:
+	      return __alignof__ (_Complex unsigned int);
+	      break;
+
+	    case _C_LNG:
+	      return __alignof__ (_Complex long);
+	      break;
+
+	    case _C_ULNG:
+	      return __alignof__ (_Complex unsigned long);
+	      break;
+
+	    case _C_LNG_LNG:
+	      return __alignof__ (_Complex long long);
+	      break;
+
+	    case _C_ULNG_LNG:
+	      return __alignof__ (_Complex unsigned long long);
+	      break;
+
+	    case _C_FLT:
+	      return __alignof__ (_Complex float);
+	      break;
+
+	    case _C_DBL:
+	      return __alignof__ (_Complex double);
+	      break;
+
+	    case _C_LNG_DBL:
+	      return __alignof__ (_Complex long double);
+	      break;
+	    
+	    default:
+	      {
+		_objc_abort ("unknown complex type %s\n", type);
+		return 0;
+	      }
+	}
+    }
+
+  default:
+    {
+      _objc_abort ("unknown type %s\n", type);
+      return 0;
+    }
+  }
+}
+
+int
+objc_aligned_size (const char *type)
+{
+  int size, align;
+
+  type = objc_skip_variable_name (type);
+  size = objc_sizeof_type (type);
+  align = objc_alignof_type (type);
+
+  return ROUND (size, align);
+}
+
+int
+objc_promoted_size (const char *type)
+{
+  int size, wordsize;
+
+  type = objc_skip_variable_name (type);
+  size = objc_sizeof_type (type);
+  wordsize = sizeof (void *);
+
+  return ROUND (size, wordsize);
+}
+
+inline
+const char *
+objc_skip_type_qualifiers (const char *type)
+{
+  while (*type == _C_CONST
+	 || *type == _C_IN
+	 || *type == _C_INOUT
+	 || *type == _C_OUT
+	 || *type == _C_BYCOPY
+         || *type == _C_BYREF
+	 || *type == _C_ONEWAY
+	 || *type == _C_GCINVISIBLE)
+    {
+      type += 1;
+    }
+  return type;
+}
+
+inline
+const char *
+objc_skip_typespec (const char *type)
+{
+  type = objc_skip_variable_name (type);
+  type = objc_skip_type_qualifiers (type);
+
+  switch (*type) {
+
+  case _C_ID:
+    /* An id may be annotated by the actual type if it is known
+       with the @"ClassName" syntax */
+
+    if (*++type != '"')
+      return type;
+    else
+      {
+	while (*++type != '"')
+	  /* do nothing */;
+	return type + 1;
+      }
+
+    /* The following are one character type codes */
+  case _C_CLASS:
+  case _C_SEL:
+  case _C_CHR:
+  case _C_UCHR:
+  case _C_CHARPTR:
+  case _C_ATOM:
+  case _C_SHT:
+  case _C_USHT:
+  case _C_INT:
+  case _C_UINT:
+  case _C_LNG:
+  case _C_BOOL:
+  case _C_ULNG:
+  case _C_LNG_LNG:
+  case _C_ULNG_LNG:
+  case _C_FLT:
+  case _C_DBL:
+  case _C_LNG_DBL:
+  case _C_VOID:
+  case _C_UNDEF:
+    return ++type;
+    break;
+    
+  case _C_COMPLEX:
+    return type + 2;
+    break;
+
+  case _C_ARY_B:
+    /* skip digits, typespec and closing ']' */
+    while (isdigit ((unsigned char)*++type))
+      ;
+    type = objc_skip_typespec (type);
+    if (*type == _C_ARY_E)
+      return ++type;
+    else
+      {
+	_objc_abort ("bad array type %s\n", type);
+	return 0;
+      }
+
+  case _C_VECTOR:
+    /* Skip '!' */
+    type++;
+    /* Skip '[' */
+    type++;
+    /* Skip digits (size) */
+    while (isdigit ((unsigned char)*type))
+      type++;
+    /* Skip ',' */
+    type++;
+    /* Skip digits (alignment) */
+    while (isdigit ((unsigned char)*type))
+      type++;
+    /* Skip typespec.  */
+    type = objc_skip_typespec (type);
+    /* Skip closing ']'.  */
+    if (*type == _C_ARY_E)
+      return ++type;
+    else
+      {
+	_objc_abort ("bad vector type %s\n", type);
+	return 0;
+      }
+
+  case _C_BFLD:
+    /* The GNU encoding of bitfields is: b 'position' 'type'
+       'size'.  */
+    while (isdigit ((unsigned char)*++type))
+      ;	/* skip position */
+    while (isdigit ((unsigned char)*++type))
+      ;	/* skip type and size */
+    return type;
+
+  case _C_STRUCT_B:
+    /* skip name, and elements until closing '}'  */
+
+    while (*type != _C_STRUCT_E && *type++ != '=')
+      ;
+    while (*type != _C_STRUCT_E)
+      {
+	type = objc_skip_typespec (type);
+      }
+    return ++type;
+
+  case _C_UNION_B:
+    /* skip name, and elements until closing ')'  */
+
+    while (*type != _C_UNION_E && *type++ != '=')
+      ;
+    while (*type != _C_UNION_E)
+      {
+	type = objc_skip_typespec (type);
+      }
+    return ++type;
+
+  case _C_PTR:
+    /* Just skip the following typespec */
+
+    return objc_skip_typespec (++type);
+
+  default:
+    {
+      _objc_abort ("unknown type %s\n", type);
+      return 0;
+    }
+  }
+}
+
+inline
+const char *
+objc_skip_offset (const char *type)
+{
+  /* The offset is prepended by a '+' if the argument is passed in
+     registers.  PS: The compiler stopped generating this '+' in
+     version 3.4.  */
+  if (*type == '+')
+    type++;
+
+  /* Some people claim that on some platforms, where the stack grows
+     backwards, the compiler generates negative offsets (??).  Skip a
+     '-' for such a negative offset.  */
+  if (*type == '-')
+    type++;
+
+  /* Skip the digits that represent the offset.  */
+  while (isdigit ((unsigned char) *type))
+    type++;
+
+  return type;
+}
+
+const char *
+objc_skip_argspec (const char *type)
+{
+  type = objc_skip_typespec (type);
+  type = objc_skip_offset (type);
+  return type;
+}
+
+char *
+method_copyReturnType (struct objc_method *method)
+{
+  if (method == NULL)
+    return 0;
+  else
+    {
+      char *returnValue;
+      size_t returnValueSize;
+
+      /* Determine returnValueSize.  */
+      {
+	/* Find the end of the first argument.  We want to return the
+	   first argument spec, plus 1 byte for the \0 at the end.  */
+	const char *type = method->method_types;
+	if (*type == '\0')
+	  return NULL;
+	type = objc_skip_argspec (type);
+	returnValueSize = type - method->method_types + 1;
+      }
+
+      /* Copy the first argument into returnValue.  */
+      returnValue = malloc (sizeof (char) * returnValueSize);
+      memcpy (returnValue, method->method_types, returnValueSize);
+      returnValue[returnValueSize - 1] = '\0';
+
+      return returnValue;
+    }
+}
+
+char *
+method_copyArgumentType (struct objc_method * method, unsigned int argumentNumber)
+{
+  if (method == NULL)
+    return 0;
+  else
+    {
+      char *returnValue;
+      const char *returnValueStart;
+      size_t returnValueSize;
+
+      /* Determine returnValueStart and returnValueSize.  */
+      {
+	const char *type = method->method_types;
+
+	/* Skip the first argument (return type).  */
+	type = objc_skip_argspec (type);
+
+	/* Now keep skipping arguments until we get to
+	   argumentNumber.  */
+	while (argumentNumber > 0)
+	  {
+	    /* We are supposed to skip an argument, but the string is
+	       finished.  This means we were asked for a non-existing
+	       argument.  */
+	    if (*type == '\0')
+	      return NULL;
+
+	    type = objc_skip_argspec (type);
+	    argumentNumber--;
+	  }
+
+	/* If the argument does not exist, return NULL.  */
+	if (*type == '\0')
+	  return NULL;
+
+	returnValueStart = type;
+	type = objc_skip_argspec (type);
+	returnValueSize = type - returnValueStart + 1;
+      }
+      
+      /* Copy the argument into returnValue.  */
+      returnValue = malloc (sizeof (char) * returnValueSize);
+      memcpy (returnValue, returnValueStart, returnValueSize);
+      returnValue[returnValueSize - 1] = '\0';
+
+      return returnValue;
+    }
+}
+
+void method_getReturnType (struct objc_method * method, char *returnValue, 
+			   size_t returnValueSize)
+{
+  if (returnValue == NULL  ||  returnValueSize == 0)
+    return;
+
+  /* Zero the string; we'll then write the argument type at the
+     beginning of it, if needed.  */
+  memset (returnValue, 0, returnValueSize);
+
+  if (method == NULL)
+    return;
+  else
+    {
+      size_t argumentTypeSize;
+
+      /* Determine argumentTypeSize.  */
+      {
+	/* Find the end of the first argument.  We want to return the
+	   first argument spec.  */
+	const char *type = method->method_types;
+	if (*type == '\0')
+	  return;
+	type = objc_skip_argspec (type);
+	argumentTypeSize = type - method->method_types;
+	if (argumentTypeSize > returnValueSize)
+	  argumentTypeSize = returnValueSize;
+      }
+      /* Copy the argument at the beginning of the string.  */
+      memcpy (returnValue, method->method_types, argumentTypeSize);
+    }
+}
+
+void method_getArgumentType (struct objc_method * method, unsigned int argumentNumber,
+			     char *returnValue, size_t returnValueSize)
+{
+  if (returnValue == NULL  ||  returnValueSize == 0)
+    return;
+
+  /* Zero the string; we'll then write the argument type at the
+     beginning of it, if needed.  */
+  memset (returnValue, 0, returnValueSize);
+
+  if (method == NULL)
+    return;
+  else
+    {
+      const char *returnValueStart;
+      size_t argumentTypeSize;
+
+      /* Determine returnValueStart and argumentTypeSize.  */
+      {
+	const char *type = method->method_types;
+
+	/* Skip the first argument (return type).  */
+	type = objc_skip_argspec (type);
+
+	/* Now keep skipping arguments until we get to
+	   argumentNumber.  */
+	while (argumentNumber > 0)
+	  {
+	    /* We are supposed to skip an argument, but the string is
+	       finished.  This means we were asked for a non-existing
+	       argument.  */
+	    if (*type == '\0')
+	      return;
+
+	    type = objc_skip_argspec (type);
+	    argumentNumber--;
+	  }
+
+	/* If the argument does not exist, it's game over.  */
+	if (*type == '\0')
+	  return;
+
+	returnValueStart = type;
+	type = objc_skip_argspec (type);
+	argumentTypeSize = type - returnValueStart;
+	if (argumentTypeSize > returnValueSize)
+	  argumentTypeSize = returnValueSize;
+      }
+      /* Copy the argument at the beginning of the string.  */
+      memcpy (returnValue, returnValueStart, argumentTypeSize);
+    }
+}
+
+unsigned int
+method_getNumberOfArguments (struct objc_method *method)
+{
+  if (method == NULL)
+    return 0;
+  else
+    {
+      unsigned int i = 0;
+      const char *type = method->method_types;
+      while (*type)
+	{
+	  type = objc_skip_argspec (type);
+	  i += 1;
+	}
+
+      if (i == 0)
+	{
+	  /* This could only happen if method_types is invalid; in
+	     that case, return 0.  */
+	  return 0;
+	}
+      else
+	{
+	  /* Remove the return type.  */
+	  return (i - 1);
+	}
+    }
+}
+
+int
+method_get_number_of_arguments (struct objc_method *mth)
+{
+  return method_getNumberOfArguments (mth);
+}
+
+/* Return the size of the argument block needed on the stack to invoke
+   the method MTH.  This may be zero, if all arguments are passed in
+   registers.  */
+int
+method_get_sizeof_arguments (struct objc_method *mth)
+{
+  const char *type = objc_skip_typespec (mth->method_types);
+  return atoi (type);
+}
+
+/*
+  Return a pointer to the next argument of ARGFRAME.  type points to
+  the last argument.  Typical use of this look like:
+
+  {
+    char *datum, *type;
+    for (datum = method_get_first_argument (method, argframe, &type);
+         datum; datum = method_get_next_argument (argframe, &type))
+      {
+        unsigned flags = objc_get_type_qualifiers (type);
+        type = objc_skip_type_qualifiers (type);
+	if (*type != _C_PTR)
+          [portal encodeData: datum ofType: type];
+	else
+	  {
+	    if ((flags & _F_IN) == _F_IN)
+              [portal encodeData: *(char **) datum ofType: ++type];
+	  }
+      }
+  }
+*/
+char *
+method_get_next_argument (arglist_t argframe, const char **type)
+{
+  const char *t = objc_skip_argspec (*type);
+
+  if (*t == '\0')
+    return 0;
+
+  *type = t;
+  t = objc_skip_typespec (t);
+
+  if (*t == '+')
+    return argframe->arg_regs + atoi (++t);
+  else
+    return argframe->arg_ptr + atoi (t);
+}
+
+/* Return a pointer to the value of the first argument of the method
+   described in M with the given argumentframe ARGFRAME.  The type
+   is returned in TYPE.  type must be passed to successive calls of
+   method_get_next_argument.  */
+char *
+method_get_first_argument (struct objc_method *m,
+			   arglist_t argframe,
+			   const char **type)
+{
+  *type = m->method_types;
+  return method_get_next_argument (argframe, type);
+}
+
+/* Return a pointer to the ARGth argument of the method
+   M from the frame ARGFRAME.  The type of the argument
+   is returned in the value-result argument TYPE.  */
+char *
+method_get_nth_argument (struct objc_method *m,
+			 arglist_t argframe, int arg,
+			 const char **type)
+{
+  const char *t = objc_skip_argspec (m->method_types);
+
+  if (arg > method_get_number_of_arguments (m))
+    return 0;
+
+  while (arg--)
+    t = objc_skip_argspec (t);
+
+  *type = t;
+  t = objc_skip_typespec (t);
+
+  if (*t == '+')
+    return argframe->arg_regs + atoi (++t);
+  else
+    return argframe->arg_ptr + atoi (t);
+}
+
+unsigned
+objc_get_type_qualifiers (const char *type)
+{
+  unsigned res = 0;
+  BOOL flag = YES;
+
+  while (flag)
+    switch (*type++)
+      {
+      case _C_CONST:       res |= _F_CONST; break;
+      case _C_IN:          res |= _F_IN; break;
+      case _C_INOUT:       res |= _F_INOUT; break;
+      case _C_OUT:         res |= _F_OUT; break;
+      case _C_BYCOPY:      res |= _F_BYCOPY; break;
+      case _C_BYREF:       res |= _F_BYREF; break;
+      case _C_ONEWAY:      res |= _F_ONEWAY; break;
+      case _C_GCINVISIBLE: res |= _F_GCINVISIBLE; break;
+      default: flag = NO;
+    }
+
+  return res;
+}
+
+/* The following three functions can be used to determine how a
+   structure is laid out by the compiler. For example:
+
+  struct objc_struct_layout layout;
+  int i;
+
+  objc_layout_structure (type, &layout);
+  while (objc_layout_structure_next_member (&layout))
+    {
+      int position, align;
+      const char *type;
+
+      objc_layout_structure_get_info (&layout, &position, &align, &type);
+      printf ("element %d has offset %d, alignment %d\n",
+              i++, position, align);
+    }
+
+  These functions are used by objc_sizeof_type and objc_alignof_type
+  functions to compute the size and alignment of structures. The
+  previous method of computing the size and alignment of a structure
+  was not working on some architectures, particulary on AIX, and in
+  the presence of bitfields inside the structure.  */
+void
+objc_layout_structure (const char *type,
+		       struct objc_struct_layout *layout)
+{
+  const char *ntype;
+
+  if (*type != _C_UNION_B && *type != _C_STRUCT_B)
+    {
+      _objc_abort ("record (or union) type expected in objc_layout_structure, got %s\n",
+		   type);
+    }
+
+  type ++;
+  layout->original_type = type;
+
+  /* Skip "<name>=" if any. Avoid embedded structures and unions. */
+  ntype = type;
+  while (*ntype != _C_STRUCT_E && *ntype != _C_STRUCT_B && *ntype != _C_UNION_B
+         && *ntype++ != '=')
+    /* do nothing */;
+
+  /* If there's a "<name>=", ntype - 1 points to '='; skip the the name */
+  if (*(ntype - 1) == '=')
+    type = ntype;
+
+  layout->type = type;
+  layout->prev_type = NULL;
+  layout->record_size = 0;
+  layout->record_align = BITS_PER_UNIT;
+
+  layout->record_align = MAX (layout->record_align, STRUCTURE_SIZE_BOUNDARY);
+}
+
+BOOL
+objc_layout_structure_next_member (struct objc_struct_layout *layout)
+{
+  register int desired_align = 0;
+
+  /* The following are used only if the field is a bitfield */
+  register const char *bfld_type = 0;
+  register int bfld_type_align = 0, bfld_field_size = 0;
+
+  /* The current type without the type qualifiers */
+  const char *type;
+  BOOL unionp = layout->original_type[-1] == _C_UNION_B;
+
+  /* Add the size of the previous field to the size of the record.  */
+  if (layout->prev_type)
+    {
+      type = objc_skip_type_qualifiers (layout->prev_type);
+      if (unionp)
+        layout->record_size = MAX (layout->record_size,
+				   objc_sizeof_type (type) * BITS_PER_UNIT);
+
+      else if (*type != _C_BFLD)
+        layout->record_size += objc_sizeof_type (type) * BITS_PER_UNIT;
+      else {
+        /* Get the bitfield's type */
+        for (bfld_type = type + 1;
+             isdigit ((unsigned char)*bfld_type);
+             bfld_type++)
+          /* do nothing */;
+
+        bfld_type_align = objc_alignof_type (bfld_type) * BITS_PER_UNIT;
+        bfld_field_size = atoi (objc_skip_typespec (bfld_type));
+        layout->record_size += bfld_field_size;
+      }
+    }
+
+  if ((unionp && *layout->type == _C_UNION_E)
+      || (!unionp && *layout->type == _C_STRUCT_E))
+    return NO;
+
+  /* Skip the variable name if any */
+  layout->type = objc_skip_variable_name (layout->type);
+  type = objc_skip_type_qualifiers (layout->type);
+
+  if (*type != _C_BFLD)
+    desired_align = objc_alignof_type (type) * BITS_PER_UNIT;
+  else
+    {
+      desired_align = 1;
+      /* Skip the bitfield's offset */
+      for (bfld_type = type + 1;
+           isdigit ((unsigned char) *bfld_type);
+           bfld_type++)
+        /* do nothing */;
+
+      bfld_type_align = objc_alignof_type (bfld_type) * BITS_PER_UNIT;
+      bfld_field_size = atoi (objc_skip_typespec (bfld_type));
+    }
+
+  /* The following won't work for vectors.  */
+#ifdef BIGGEST_FIELD_ALIGNMENT
+  desired_align = MIN (desired_align, BIGGEST_FIELD_ALIGNMENT);
+#endif
+#ifdef ADJUST_FIELD_ALIGN
+  desired_align = ADJUST_FIELD_ALIGN (type, desired_align);
+#endif
+
+  /* Record must have at least as much alignment as any field.
+     Otherwise, the alignment of the field within the record
+     is meaningless.  */
+#ifndef PCC_BITFIELD_TYPE_MATTERS
+  layout->record_align = MAX (layout->record_align, desired_align);
+#else	/* PCC_BITFIELD_TYPE_MATTERS */
+  if (*type == _C_BFLD)
+    {
+      /* For these machines, a zero-length field does not
+         affect the alignment of the structure as a whole.
+         It does, however, affect the alignment of the next field
+         within the structure.  */
+      if (bfld_field_size)
+        layout->record_align = MAX (layout->record_align, desired_align);
+      else
+        desired_align = objc_alignof_type (bfld_type) * BITS_PER_UNIT;
+
+      /* A named bit field of declared type `int'
+         forces the entire structure to have `int' alignment.
+         Q1: How is encoded this thing and how to check for it?
+         Q2: How to determine maximum_field_alignment at runtime? */
+
+/*	  if (DECL_NAME (field) != 0) */
+      {
+        int type_align = bfld_type_align;
+#if 0
+        if (maximum_field_alignment != 0)
+          type_align = MIN (type_align, maximum_field_alignment);
+        else if (DECL_PACKED (field))
+          type_align = MIN (type_align, BITS_PER_UNIT);
+#endif
+
+        layout->record_align = MAX (layout->record_align, type_align);
+      }
+    }
+  else
+    layout->record_align = MAX (layout->record_align, desired_align);
+#endif	/* PCC_BITFIELD_TYPE_MATTERS */
+
+  /* Does this field automatically have alignment it needs
+     by virtue of the fields that precede it and the record's
+     own alignment?  */
+
+  if (*type == _C_BFLD)
+    layout->record_size = atoi (type + 1);
+  else if (layout->record_size % desired_align != 0)
+    {
+      /* No, we need to skip space before this field.
+         Bump the cumulative size to multiple of field alignment.  */
+      layout->record_size = ROUND (layout->record_size, desired_align);
+    }
+
+  /* Jump to the next field in record. */
+
+  layout->prev_type = layout->type;
+  layout->type = objc_skip_typespec (layout->type);      /* skip component */
+
+  return YES;
+}
+
+void objc_layout_finish_structure (struct objc_struct_layout *layout,
+                                   unsigned int *size,
+                                   unsigned int *align)
+{
+  BOOL unionp = layout->original_type[-1] == _C_UNION_B;
+  if (layout->type
+      && ((!unionp && *layout->type == _C_STRUCT_E)
+       	  || (unionp && *layout->type == _C_UNION_E)))
+    {
+      /* Work out the alignment of the record as one expression and store
+         in the record type.  Round it up to a multiple of the record's
+         alignment. */
+#if defined (ROUND_TYPE_ALIGN) && ! defined (__sparc__)
+      layout->record_align = ROUND_TYPE_ALIGN (layout->original_type-1,
+                                               1,
+                                               layout->record_align);
+#else
+      layout->record_align = MAX (1, layout->record_align);
+#endif
+
+#ifdef ROUND_TYPE_SIZE
+      layout->record_size = ROUND_TYPE_SIZE (layout->original_type,
+                                             layout->record_size,
+                                             layout->record_align);
+#else
+      /* Round the size up to be a multiple of the required alignment */
+      layout->record_size = ROUND (layout->record_size, layout->record_align);
+#endif
+
+      layout->type = NULL;
+    }
+  if (size)
+    *size = layout->record_size / BITS_PER_UNIT;
+  if (align)
+    *align = layout->record_align / BITS_PER_UNIT;
+}
+
+void objc_layout_structure_get_info (struct objc_struct_layout *layout,
+                                     unsigned int *offset,
+                                     unsigned int *align,
+                                     const char **type)
+{
+  if (offset)
+    *offset = layout->record_size / BITS_PER_UNIT;
+  if (align)
+    *align = layout->record_align / BITS_PER_UNIT;
+  if (type)
+    *type = layout->prev_type;
+}
diff --git a/libobjc/error.c b/libobjc/error.c
new file mode 100644
index 000000000..1dae36594
--- /dev/null
+++ b/libobjc/error.c
@@ -0,0 +1,97 @@
+/* GNU Objective C Runtime Error Functions
+   Copyright (C) 1993, 1994, 1995, 1996, 1997, 2002, 2009, 2010
+   Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "objc-private/common.h"
+#include "objc-private/error.h"
+
+/* __USE_FIXED_PROTOTYPES__ used to be required to get prototypes for
+   malloc, free, etc. on some platforms.  It is unclear if we still
+   need it, but it can't hurt.  */
+#define __USE_FIXED_PROTOTYPES__
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+/* Prints an error message and aborts the program.  */
+void
+_objc_abort (const char *fmt, ...)
+{
+  va_list ap;
+
+  va_start (ap, fmt);
+  vfprintf (stderr, fmt, ap);
+  abort ();
+  va_end (ap);
+}
+
+/* The rest of the file is deprecated.  */
+#include "objc/objc-api.h" /* For objc_error_handler.  */
+
+/*
+** Error handler function
+** NULL so that default is to just print to stderr
+*/
+static objc_error_handler _objc_error_handler = NULL;
+
+/* Trigger an objc error */
+void
+objc_error (id object, int code, const char *fmt, ...)
+{
+  va_list ap;
+
+  va_start (ap, fmt);
+  objc_verror (object, code, fmt, ap);
+  va_end (ap);
+}
+
+/* Trigger an objc error */
+void
+objc_verror (id object, int code, const char *fmt, va_list ap)
+{
+  BOOL result = NO;
+
+  /* Call the error handler if its there
+     Otherwise print to stderr */
+  if (_objc_error_handler)
+    result = (*_objc_error_handler) (object, code, fmt, ap);
+  else
+    vfprintf (stderr, fmt, ap);
+
+  /* Continue if the error handler says its ok
+     Otherwise abort the program */
+  if (result)
+    return;
+  else
+    abort ();
+}
+
+/* Set the error handler */
+objc_error_handler
+objc_set_error_handler (objc_error_handler func)
+{
+  objc_error_handler temp = _objc_error_handler;
+  _objc_error_handler = func;
+  return temp;
+}
diff --git a/libobjc/exception.c b/libobjc/exception.c
new file mode 100644
index 000000000..1ffb80b53
--- /dev/null
+++ b/libobjc/exception.c
@@ -0,0 +1,551 @@
+/* The implementation of exception handling primitives for Objective-C.
+   Copyright (C) 2004, 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "objc-private/common.h"
+#include <stdlib.h>
+#include "config.h"
+#include "objc/runtime.h"
+#include "objc/objc-exception.h"
+#include "unwind.h"
+#include "unwind-pe.h"
+#include <string.h> /* For memcpy */
+
+/* This hook allows libraries to sepecify special actions when an
+   exception is thrown without a handler in place.  This is deprecated
+   in favour of objc_set_uncaught_exception_handler ().  */
+void (*_objc_unexpected_exception) (id exception); /* !T:SAFE */
+
+
+/* 'is_kind_of_exception_matcher' is our default exception matcher -
+   it determines if the object 'exception' is of class 'catch_class',
+   or of a subclass.  */
+static int
+is_kind_of_exception_matcher (Class catch_class, id exception)
+{
+  /* NULL catch_class is catch-all (eg, @catch (id object)).  */
+  if (catch_class == Nil)
+    return 1;
+
+  /* If exception is nil (eg, @throw nil;), then it can only be
+     catched by a catch-all (eg, @catch (id object)).  */
+  if (exception != nil)
+    {
+      Class c;
+
+      for (c = exception->class_pointer; c != Nil; 
+	   c = class_getSuperclass (c))
+	if (c == catch_class)
+	  return 1;
+    }
+  return 0;
+}
+
+/* The exception matcher currently in use.  */
+static objc_exception_matcher
+__objc_exception_matcher = is_kind_of_exception_matcher;
+
+objc_exception_matcher
+objc_setExceptionMatcher (objc_exception_matcher new_matcher)
+{
+  objc_exception_matcher old_matcher = __objc_exception_matcher;
+  __objc_exception_matcher = new_matcher;
+  return old_matcher;
+}
+
+/* The uncaught exception handler currently in use.  */
+static objc_uncaught_exception_handler
+__objc_uncaught_exception_handler = NULL;
+
+objc_uncaught_exception_handler
+objc_setUncaughtExceptionHandler (objc_uncaught_exception_handler 
+				  new_handler)
+{
+  objc_uncaught_exception_handler old_handler 
+    = __objc_uncaught_exception_handler;
+  __objc_uncaught_exception_handler = new_handler;
+  return old_handler;
+}
+
+
+
+#ifdef __ARM_EABI_UNWINDER__
+
+const _Unwind_Exception_Class __objc_exception_class
+  = {'G', 'N', 'U', 'C', 'O', 'B', 'J', 'C'};
+  
+#else
+
+/* This is the exception class we report -- "GNUCOBJC".  */
+static const _Unwind_Exception_Class __objc_exception_class
+  = ((((((((_Unwind_Exception_Class) 'G'
+            << 8 | (_Unwind_Exception_Class) 'N')
+           << 8 | (_Unwind_Exception_Class) 'U')
+          << 8 | (_Unwind_Exception_Class) 'C')
+         << 8 | (_Unwind_Exception_Class) 'O')
+        << 8 | (_Unwind_Exception_Class) 'B')
+       << 8 | (_Unwind_Exception_Class) 'J')
+      << 8 | (_Unwind_Exception_Class) 'C');
+
+#endif
+
+/* This is the object that is passed around by the Objective C runtime
+   to represent the exception in flight.  */
+struct ObjcException
+{
+  /* This bit is needed in order to interact with the unwind runtime.  */
+  struct _Unwind_Exception base;
+
+  /* The actual object we want to throw. Note: must come immediately
+     after unwind header.  */
+  id value;
+
+#ifdef __ARM_EABI_UNWINDER__
+  /* Note: we use the barrier cache defined in the unwind control
+     block for ARM EABI.  */
+#else
+  /* Cache some internal unwind data between phase 1 and phase 2.  */
+  _Unwind_Ptr landingPad;
+  int handlerSwitchValue;
+#endif
+};
+
+
+
+struct lsda_header_info
+{
+  _Unwind_Ptr Start;
+  _Unwind_Ptr LPStart;
+  _Unwind_Ptr ttype_base;
+  const unsigned char *TType;
+  const unsigned char *action_table;
+  unsigned char ttype_encoding;
+  unsigned char call_site_encoding;
+};
+
+static const unsigned char *
+parse_lsda_header (struct _Unwind_Context *context, const unsigned char *p,
+		   struct lsda_header_info *info)
+{
+  _uleb128_t tmp;
+  unsigned char lpstart_encoding;
+
+  info->Start = (context ? _Unwind_GetRegionStart (context) : 0);
+
+  /* Find @LPStart, the base to which landing pad offsets are
+     relative.  */
+  lpstart_encoding = *p++;
+  if (lpstart_encoding != DW_EH_PE_omit)
+    p = read_encoded_value (context, lpstart_encoding, p, &info->LPStart);
+  else
+    info->LPStart = info->Start;
+
+  /* Find @TType, the base of the handler and exception spec type
+     data.  */
+  info->ttype_encoding = *p++;
+  if (info->ttype_encoding != DW_EH_PE_omit)
+    {
+      p = read_uleb128 (p, &tmp);
+      info->TType = p + tmp;
+    }
+  else
+    info->TType = 0;
+
+  /* The encoding and length of the call-site table; the action table
+     immediately follows.  */
+  info->call_site_encoding = *p++;
+  p = read_uleb128 (p, &tmp);
+  info->action_table = p + tmp;
+
+  return p;
+}
+
+#ifdef __ARM_EABI_UNWINDER__
+
+static Class
+get_ttype_entry (struct lsda_header_info *info, _uleb128_t i)
+{
+  _Unwind_Ptr ptr;
+  
+  ptr = (_Unwind_Ptr) (info->TType - (i * 4));
+  ptr = _Unwind_decode_target2 (ptr);
+
+  /* NULL ptr means catch-all.  Note that if the class is not found,
+     this will abort the program.  */
+  if (ptr)
+    return objc_getRequiredClass ((const char *) ptr);
+  else
+    return 0;
+}
+
+#else
+
+static Class
+get_ttype_entry (struct lsda_header_info *info, _Unwind_Word i)
+{
+  _Unwind_Ptr ptr;
+
+  i *= size_of_encoded_value (info->ttype_encoding);
+  read_encoded_value_with_base (info->ttype_encoding, info->ttype_base,
+				info->TType - i, &ptr);
+
+  /* NULL ptr means catch-all.  Note that if the class is not found,
+     this will abort the program.  */
+  if (ptr)
+    return objc_getRequiredClass ((const char *) ptr);
+  else
+    return 0;
+}
+
+#endif
+
+/* Using a different personality function name causes link failures
+   when trying to mix code using different exception handling
+   models.  */
+#ifdef SJLJ_EXCEPTIONS
+#define PERSONALITY_FUNCTION	__gnu_objc_personality_sj0
+#define __builtin_eh_return_data_regno(x) x
+#else
+#define PERSONALITY_FUNCTION	__gnu_objc_personality_v0
+#endif
+
+#ifdef __ARM_EABI_UNWINDER__
+
+#define CONTINUE_UNWINDING \
+  do								\
+    {								\
+      if (__gnu_unwind_frame(ue_header, context) != _URC_OK)	\
+	return _URC_FAILURE;					\
+      return _URC_CONTINUE_UNWIND;				\
+    }								\
+  while (0)
+
+_Unwind_Reason_Code
+PERSONALITY_FUNCTION (_Unwind_State state,
+		      struct _Unwind_Exception *ue_header,
+		      struct _Unwind_Context *context)
+#else
+
+#define CONTINUE_UNWINDING return _URC_CONTINUE_UNWIND
+
+_Unwind_Reason_Code
+PERSONALITY_FUNCTION (int version,
+		      _Unwind_Action actions,
+		      _Unwind_Exception_Class exception_class,
+		      struct _Unwind_Exception *ue_header,
+		      struct _Unwind_Context *context)
+#endif
+{
+  struct ObjcException *xh = (struct ObjcException *) ue_header;
+
+  struct lsda_header_info info;
+  const unsigned char *language_specific_data;
+  const unsigned char *action_record;
+  const unsigned char *p;
+  _Unwind_Ptr landing_pad, ip;
+  int handler_switch_value;
+  int saw_cleanup = 0, saw_handler, foreign_exception;
+  void *return_object;
+  int ip_before_insn = 0;
+
+#ifdef __ARM_EABI_UNWINDER__
+  _Unwind_Action actions;
+  
+  switch (state & _US_ACTION_MASK)
+    {
+    case _US_VIRTUAL_UNWIND_FRAME:
+      actions = _UA_SEARCH_PHASE;
+      break;
+
+    case _US_UNWIND_FRAME_STARTING:
+      actions = _UA_CLEANUP_PHASE;
+      if (!(state & _US_FORCE_UNWIND)
+	  && ue_header->barrier_cache.sp == _Unwind_GetGR (context, 13))
+	actions |= _UA_HANDLER_FRAME;
+      break;
+
+    case _US_UNWIND_FRAME_RESUME:
+      CONTINUE_UNWINDING;
+      break;
+
+    default:
+      abort();
+    }
+  actions |= state & _US_FORCE_UNWIND;
+
+  /* TODO: Foreign exceptions need some attention (e.g. rethrowing
+     doesn't work).  */
+  foreign_exception = 0;
+
+  /* The dwarf unwinder assumes the context structure holds things
+     like the function and LSDA pointers.  The ARM implementation
+     caches these in the exception header (UCB).  To avoid rewriting
+     everything we make the virtual IP register point at the UCB.  */
+  ip = (_Unwind_Ptr) ue_header;
+  _Unwind_SetGR (context, 12, ip);
+
+#else  /* !__ARM_EABI_UNWINDER.  */
+  /* Interface version check.  */
+  if (version != 1)
+    return _URC_FATAL_PHASE1_ERROR;
+  
+  foreign_exception = (exception_class != __objc_exception_class);
+#endif
+
+  /* Shortcut for phase 2 found handler for domestic exception.  */
+  if (actions == (_UA_CLEANUP_PHASE | _UA_HANDLER_FRAME)
+      && !foreign_exception)
+    {
+#ifdef __ARM_EABI_UNWINDER__
+      handler_switch_value = (int) ue_header->barrier_cache.bitpattern[1];
+      landing_pad = (_Unwind_Ptr) ue_header->barrier_cache.bitpattern[3];
+#else
+      handler_switch_value = xh->handlerSwitchValue;
+      landing_pad = xh->landingPad;
+#endif
+      goto install_context;
+    }
+
+  language_specific_data = (const unsigned char *)
+    _Unwind_GetLanguageSpecificData (context);
+
+  /* If no LSDA, then there are no handlers or cleanups.  */
+  if (! language_specific_data)
+    CONTINUE_UNWINDING;
+
+  /* Parse the LSDA header.  */
+  p = parse_lsda_header (context, language_specific_data, &info);
+  info.ttype_base = base_of_encoded_value (info.ttype_encoding, context);
+#ifdef HAVE_GETIPINFO
+  ip = _Unwind_GetIPInfo (context, &ip_before_insn);
+#else
+  ip = _Unwind_GetIP (context);
+#endif
+  if (!ip_before_insn)
+    --ip;
+  landing_pad = 0;
+  action_record = 0;
+  handler_switch_value = 0;
+
+#ifdef SJLJ_EXCEPTIONS
+  /* The given "IP" is an index into the call-site table, with two
+     exceptions -- -1 means no-action, and 0 means terminate.  But
+     since we're using uleb128 values, we've not got random access to
+     the array.  */
+  if ((int) ip < 0)
+    return _URC_CONTINUE_UNWIND;
+  else
+    {
+      _uleb128_t cs_lp, cs_action;
+      do
+	{
+	  p = read_uleb128 (p, &cs_lp);
+	  p = read_uleb128 (p, &cs_action);
+	}
+      while (--ip);
+
+      /* Can never have null landing pad for sjlj -- that would have
+         been indicated by a -1 call site index.  */
+      landing_pad = cs_lp + 1;
+      if (cs_action)
+	action_record = info.action_table + cs_action - 1;
+      goto found_something;
+    }
+#else
+  /* Search the call-site table for the action associated with this
+     IP.  */
+  while (p < info.action_table)
+    {
+      _Unwind_Ptr cs_start, cs_len, cs_lp;
+      _uleb128_t cs_action;
+
+      /* Note that all call-site encodings are "absolute"
+	 displacements.  */
+      p = read_encoded_value (0, info.call_site_encoding, p, &cs_start);
+      p = read_encoded_value (0, info.call_site_encoding, p, &cs_len);
+      p = read_encoded_value (0, info.call_site_encoding, p, &cs_lp);
+      p = read_uleb128 (p, &cs_action);
+
+      /* The table is sorted, so if we've passed the ip, stop.  */
+      if (ip < info.Start + cs_start)
+	p = info.action_table;
+      else if (ip < info.Start + cs_start + cs_len)
+	{
+	  if (cs_lp)
+	    landing_pad = info.LPStart + cs_lp;
+	  if (cs_action)
+	    action_record = info.action_table + cs_action - 1;
+	  goto found_something;
+	}
+    }
+#endif /* SJLJ_EXCEPTIONS  */
+
+  /* If ip is not present in the table, C++ would call terminate.  */
+  /* ??? As with Java, it's perhaps better to tweek the LSDA to that
+     no-action is mapped to no-entry.  */
+  CONTINUE_UNWINDING;
+
+ found_something:
+  saw_cleanup = 0;
+  saw_handler = 0;
+
+  if (landing_pad == 0)
+    {
+      /* If ip is present, and has a null landing pad, there are no
+	 cleanups or handlers to be run.  */
+    }
+  else if (action_record == 0)
+    {
+      /* If ip is present, has a non-null landing pad, and a null
+         action table offset, then there are only cleanups present.
+         Cleanups use a zero switch value, as set above.  */
+      saw_cleanup = 1;
+    }
+  else
+    {
+      /* Otherwise we have a catch handler.  */
+      _sleb128_t ar_filter, ar_disp;
+
+      while (1)
+	{
+	  p = action_record;
+	  p = read_sleb128 (p, &ar_filter);
+	  read_sleb128 (p, &ar_disp);
+
+	  if (ar_filter == 0)
+	    {
+	      /* Zero filter values are cleanups.  */
+	      saw_cleanup = 1;
+	    }
+
+	  /* During forced unwinding, we only run cleanups.  With a
+	     foreign exception class, we have no class info to
+	     match.  */
+	  else if ((actions & _UA_FORCE_UNWIND) || foreign_exception)
+	    ;
+
+	  else if (ar_filter > 0)
+	    {
+	      /* Positive filter values are handlers.  */
+	      Class catch_type = get_ttype_entry (&info, ar_filter);
+
+	      if ((*__objc_exception_matcher) (catch_type, xh->value))
+		{
+		  handler_switch_value = ar_filter;
+		  saw_handler = 1;
+		  break;
+		}
+	    }
+	  else
+	    {
+	      /* Negative filter values are exception specifications,
+	         which Objective-C does not use.  */
+	      abort ();
+	    }
+
+	  if (ar_disp == 0)
+	    break;
+	  action_record = p + ar_disp;
+	}
+    }
+
+  if (! saw_handler && ! saw_cleanup)
+    CONTINUE_UNWINDING;
+
+  if (actions & _UA_SEARCH_PHASE)
+    {
+      if (!saw_handler)
+	CONTINUE_UNWINDING;
+
+      /* For domestic exceptions, we cache data from phase 1 for phase
+	 2.  */
+      if (!foreign_exception)
+        {
+#ifdef __ARM_EABI_UNWINDER__
+	  ue_header->barrier_cache.sp = _Unwind_GetGR (context, 13);
+	  ue_header->barrier_cache.bitpattern[1] = (_uw) handler_switch_value;
+	  ue_header->barrier_cache.bitpattern[3] = (_uw) landing_pad;
+#else
+          xh->handlerSwitchValue = handler_switch_value;
+          xh->landingPad = landing_pad;
+#endif
+	}
+      return _URC_HANDLER_FOUND;
+    }
+
+ install_context:
+  if (saw_cleanup == 0)
+    {
+      return_object = xh->value;
+      if (!(actions & _UA_SEARCH_PHASE))
+	_Unwind_DeleteException(&xh->base);
+    }
+  
+  _Unwind_SetGR (context, __builtin_eh_return_data_regno (0),
+		 __builtin_extend_pointer (saw_cleanup ? xh : return_object));
+  _Unwind_SetGR (context, __builtin_eh_return_data_regno (1),
+		 handler_switch_value);
+  _Unwind_SetIP (context, landing_pad);
+  return _URC_INSTALL_CONTEXT;
+}
+
+static void
+__objc_exception_cleanup (_Unwind_Reason_Code code __attribute__((unused)),
+			  struct _Unwind_Exception *exc)
+{
+  free (exc);
+}
+
+void
+objc_exception_throw (id exception)
+{
+  struct ObjcException *header = calloc (1, sizeof (*header));
+
+  memcpy (&header->base.exception_class, &__objc_exception_class,
+	  sizeof (__objc_exception_class));
+  header->base.exception_cleanup = __objc_exception_cleanup;
+  header->value = exception;
+
+#ifdef SJLJ_EXCEPTIONS
+  _Unwind_SjLj_RaiseException (&header->base);
+#else
+  _Unwind_RaiseException (&header->base);
+#endif
+
+  /* No exception handler was installed.  Call the uncaught exception
+     handler if any is defined.  */
+  if (__objc_uncaught_exception_handler != 0)
+    {
+      (*__objc_uncaught_exception_handler) (exception);
+    }
+
+  /* As a last resort support the old, deprecated way of setting an
+     uncaught exception handler.  */
+  if (_objc_unexpected_exception != 0)
+    {
+      (*_objc_unexpected_exception) (exception);
+    }
+
+  abort ();
+}
+
diff --git a/libobjc/gc.c b/libobjc/gc.c
new file mode 100644
index 000000000..5ea4f8a09
--- /dev/null
+++ b/libobjc/gc.c
@@ -0,0 +1,458 @@
+/* Basic data types for Objective C.
+   Copyright (C) 1998, 2002, 2004, 2005, 2006, 2009, 2010
+   Free Software Foundation, Inc.
+   Contributed by Ovidiu Predescu.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "objc-private/common.h"
+#include "objc/objc.h"
+
+#if OBJC_WITH_GC
+
+#include "tconfig.h"
+#include <assert.h>
+#include <string.h>
+#include <stdlib.h>
+#include "objc/encoding.h"
+
+#include <gc.h>
+#include <limits.h>
+
+/* gc_typed.h uses the following but doesn't declare them */
+typedef GC_word word;
+typedef GC_signed_word signed_word;
+#define BITS_PER_WORD (CHAR_BIT * sizeof (word))
+
+#include <gc_typed.h>
+
+/* The following functions set up in `mask` the corresponding pointers.
+   The offset is incremented with the size of the type.  */
+
+#define ROUND(V, A) \
+  ({ typeof (V) __v = (V); typeof (A) __a = (A); \
+     __a * ((__v+__a - 1)/__a); })
+
+#define SET_BIT_FOR_OFFSET(mask, offset) \
+  GC_set_bit (mask, offset / sizeof (void *))
+
+/* Some prototypes */
+static void
+__objc_gc_setup_struct (GC_bitmap mask, const char *type, int offset);
+static void
+__objc_gc_setup_union (GC_bitmap mask, const char *type, int offset);
+
+
+static void
+__objc_gc_setup_array (GC_bitmap mask, const char *type, int offset)
+{
+  int i, len = atoi (type + 1);
+
+  while (isdigit (*++type))
+    /* do nothing */;		/* skip the size of the array */
+
+  switch (*type) {
+  case _C_ARY_B:
+    for (i = 0; i < len; i++)
+      __objc_gc_setup_array (mask, type, offset);
+    break;
+
+  case _C_STRUCT_B:
+    for (i = 0; i < len; i++)
+      __objc_gc_setup_struct (mask, type, offset);
+    break;
+
+  case _C_UNION_B:
+    for (i = 0; i < len; i++)
+      __objc_gc_setup_union (mask, type, offset);
+    break;
+
+  default:
+    break;
+  }
+}
+
+static void
+__objc_gc_setup_struct (GC_bitmap mask, const char *type, int offset)
+{
+  struct objc_struct_layout layout;
+  unsigned int position;
+  const char *mtype;
+
+  objc_layout_structure (type, &layout);
+
+  while (objc_layout_structure_next_member (&layout))
+    {
+      BOOL gc_invisible = NO;
+
+      objc_layout_structure_get_info (&layout, &position, NULL, &mtype);
+
+      /* Skip the variable name */
+      if (*mtype == '"')
+	{
+	  for (mtype++; *mtype++ != '"';)
+	    /* do nothing */;
+	}
+
+      if (*mtype == _C_GCINVISIBLE)
+	{
+	  gc_invisible = YES;
+	  mtype++;
+	}
+
+      /* Add to position the offset of this structure */
+      position += offset;
+
+      switch (*mtype) {
+      case _C_ID:
+      case _C_CLASS:
+      case _C_SEL:
+      case _C_PTR:
+      case _C_CHARPTR:
+      case _C_ATOM:
+	if (! gc_invisible)
+	  SET_BIT_FOR_OFFSET (mask, position);
+	break;
+
+      case _C_ARY_B:
+	__objc_gc_setup_array (mask, mtype, position);
+	break;
+
+      case _C_STRUCT_B:
+	__objc_gc_setup_struct (mask, mtype, position);
+	break;
+
+      case _C_UNION_B:
+	__objc_gc_setup_union (mask, mtype, position);
+	break;
+
+      default:
+        break;
+      }
+    }
+}
+
+static void
+__objc_gc_setup_union (GC_bitmap mask, const char *type, int offset)
+{
+  /* Sub-optimal, quick implementation: assume the union is made of
+     pointers, set up the mask accordingly. */
+
+  int i, size, align;
+
+  /* Skip the variable name */
+  if (*type == '"')
+    {
+      for (type++; *type++ != '"';)
+	/* do nothing */;
+    }
+
+  size = objc_sizeof_type (type);
+  align = objc_alignof_type (type);
+
+  offset = ROUND (offset, align);
+  for (i = 0; i < size; i += sizeof (void *))
+    {
+      SET_BIT_FOR_OFFSET (mask, offset);
+      offset += sizeof (void *);
+    }
+}
+
+
+/* Iterates over the types in the structure that represents the class
+   encoding and sets the bits in mask according to each ivar type.  */
+static void
+__objc_gc_type_description_from_type (GC_bitmap mask, const char *type)
+{
+  struct objc_struct_layout layout;
+  unsigned int offset, align;
+  const char *ivar_type;
+
+  objc_layout_structure (type, &layout);
+
+  while (objc_layout_structure_next_member (&layout))
+    {
+      BOOL gc_invisible = NO;
+
+      objc_layout_structure_get_info (&layout, &offset, &align, &ivar_type);
+
+      /* Skip the variable name */
+      if (*ivar_type == '"')
+	{
+	  for (ivar_type++; *ivar_type++ != '"';)
+	    /* do nothing */;
+	}
+
+      if (*ivar_type == _C_GCINVISIBLE)
+	{
+	  gc_invisible = YES;
+	  ivar_type++;
+	}
+
+      switch (*ivar_type) {
+      case _C_ID:
+      case _C_CLASS:
+      case _C_SEL:
+      case _C_PTR:
+      case _C_CHARPTR:
+        if (! gc_invisible)
+          SET_BIT_FOR_OFFSET (mask, offset);
+	break;
+
+      case _C_ARY_B:
+	__objc_gc_setup_array (mask, ivar_type, offset);
+	break;
+
+      case _C_STRUCT_B:
+	__objc_gc_setup_struct (mask, ivar_type, offset);
+	break;
+
+      case _C_UNION_B:
+	__objc_gc_setup_union (mask, ivar_type, offset);
+	break;
+
+      default:
+        break;
+      }
+    }
+}
+
+/* Computes in *type the full type encoding of this class including
+   its super classes. '*size' gives the total number of bytes allocated
+   into *type, '*current' the number of bytes used so far by the
+   encoding. */
+static void
+__objc_class_structure_encoding (Class class, char **type, int *size,
+                                 int *current)
+{
+  int i, ivar_count;
+  struct objc_ivar_list *ivars;
+
+  if (! class)
+    {
+      strcat (*type, "{");
+      (*current)++;
+      return;
+    }
+
+  /* Add the type encodings of the super classes */
+  __objc_class_structure_encoding (class->super_class, type, size, current);
+
+  ivars = class->ivars;
+  if (! ivars)
+    return;
+
+  ivar_count = ivars->ivar_count;
+
+  for (i = 0; i < ivar_count; i++)
+    {
+      struct objc_ivar *ivar = &(ivars->ivar_list[i]);
+      const char *ivar_type = ivar->ivar_type;
+      int len = strlen (ivar_type);
+
+      if (*current + len + 1 >= *size)
+        {
+          /* Increase the size of the encoding string so that it
+             contains this ivar's type. */
+          *size = ROUND (*current + len + 1, 10);
+          *type = objc_realloc (*type, *size);
+        }
+      strcat (*type + *current, ivar_type);
+      *current += len;
+    }
+}
+
+
+/* Allocates the memory that will hold the type description for class
+   and calls the __objc_class_structure_encoding that generates this
+   value. */
+void
+__objc_generate_gc_type_description (Class class)
+{
+  GC_bitmap mask;
+  int bits_no, size;
+  int type_size = 10, current;
+  char *class_structure_type;
+
+  if (! CLS_ISCLASS (class))
+    return;
+
+  /* We have to create a mask in which each bit counts for a pointer member.
+     We take into consideration all the non-pointer instance variables and we
+     round them up to the alignment. */
+
+  /* The number of bits in the mask is the size of an instance in bytes divided
+     by the size of a pointer. */
+  bits_no = (ROUND (class_get_instance_size (class), sizeof (void *))
+             / sizeof (void *));
+  size = ROUND (bits_no, BITS_PER_WORD) / BITS_PER_WORD;
+  mask = objc_atomic_malloc (size * sizeof (int));
+  memset (mask, 0, size * sizeof (int));
+
+  class_structure_type = objc_atomic_malloc (type_size);
+  *class_structure_type = current = 0;
+  __objc_class_structure_encoding (class, &class_structure_type,
+                                   &type_size, &current);
+  if (current + 1 == type_size)
+    class_structure_type = objc_realloc (class_structure_type, ++type_size);
+  strcat (class_structure_type + current, "}");
+#ifdef DEBUG
+  printf ("type description for '%s' is %s\n", class->name, class_structure_type);
+#endif
+  
+  __objc_gc_type_description_from_type (mask, class_structure_type);
+  objc_free (class_structure_type);
+
+#ifdef DEBUG
+  printf ("  mask for '%s', type '%s' (bits %d, mask size %d) is:",
+	  class_structure_type, class->name, bits_no, size);
+  {
+    int i;
+    for (i = 0; i < size; i++)
+      printf (" %lx", mask[i]);
+  }
+  puts ("");
+#endif
+
+  class->gc_object_type = (void *) GC_make_descriptor (mask, bits_no);
+}
+
+
+/* Returns YES if type denotes a pointer type, NO otherwise */
+static inline BOOL
+__objc_ivar_pointer (const char *type)
+{
+  type = objc_skip_type_qualifiers (type);
+
+  return (*type == _C_ID
+          || *type == _C_CLASS
+          || *type == _C_SEL
+          || *type == _C_PTR
+          || *type == _C_CHARPTR
+          || *type == _C_ATOM);
+}
+
+
+/* Mark the instance variable whose name is given by ivarname as a
+   weak pointer (a pointer hidden to the garbage collector) if
+   gc_invisible is true. If gc_invisible is false it unmarks the
+   instance variable and makes it a normal pointer, visible to the
+   garbage collector.
+
+   This operation only makes sense on instance variables that are
+   pointers.  */
+void
+class_ivar_set_gcinvisible (Class class, const char *ivarname,
+                            BOOL gc_invisible)
+{
+  int i, ivar_count;
+  struct objc_ivar_list *ivars;
+
+  if (! class || ! ivarname)
+    return;
+
+  ivars = class->ivars;
+  if (! ivars)
+    return;
+
+  ivar_count = ivars->ivar_count;
+
+  for (i = 0; i < ivar_count; i++)
+    {
+      struct objc_ivar *ivar = &(ivars->ivar_list[i]);
+      const char *type;
+
+      if (! ivar->ivar_name || strcmp (ivar->ivar_name, ivarname))
+	continue;
+
+      assert (ivar->ivar_type);
+      type = ivar->ivar_type;
+
+      /* Skip the variable name */
+      if (*type == '"')
+	{
+	  for (type++; *type++ != '"';)
+	    /* do nothing */;
+	}
+
+      if (*type == _C_GCINVISIBLE)
+	{
+	  char *new_type;
+	  size_t len;
+
+	  if (gc_invisible || ! __objc_ivar_pointer (type))
+	    return;	/* The type of the variable already matches the
+			   requested gc_invisible type */
+
+	  /* The variable is gc_invisible so we make it gc visible.  */
+	  new_type = objc_atomic_malloc (strlen(ivar->ivar_type));
+	  len = (type - ivar->ivar_type);
+	  memcpy (new_type, ivar->ivar_type, len);
+	  new_type[len] = 0;
+	  strcat (new_type, type + 1);
+	  ivar->ivar_type = new_type;
+	}
+      else
+	{
+	  char *new_type;
+	  size_t len;
+
+	  if (! gc_invisible || ! __objc_ivar_pointer (type))
+	    return;	/* The type of the variable already matches the
+			   requested gc_invisible type */
+
+	  /* The variable is gc visible so we make it gc_invisible.  */
+	  new_type = objc_malloc (strlen(ivar->ivar_type) + 2);
+
+	  /* Copy the variable name.  */
+	  len = (type - ivar->ivar_type);
+	  memcpy (new_type, ivar->ivar_type, len);
+	  /* Add '!'.  */
+	  new_type[len++] = _C_GCINVISIBLE;
+	  /* Copy the original types.  */
+	  strcpy (new_type + len, type);
+
+	  ivar->ivar_type = new_type;
+	}
+
+      __objc_generate_gc_type_description (class);
+      return;
+    }
+
+  /* Search the instance variable in the superclasses */
+  class_ivar_set_gcinvisible (class->super_class, ivarname, gc_invisible);
+}
+
+#else /* !OBJC_WITH_GC */
+
+void
+__objc_generate_gc_type_description (Class class __attribute__ ((__unused__)))
+{
+}
+
+void class_ivar_set_gcinvisible (Class class __attribute__ ((__unused__)),
+				 const char *ivarname __attribute__ ((__unused__)),
+				 BOOL gc_invisible __attribute__ ((__unused__)))
+{
+}
+
+#endif /* OBJC_WITH_GC */
diff --git a/libobjc/hash.c b/libobjc/hash.c
new file mode 100644
index 000000000..733fc6501
--- /dev/null
+++ b/libobjc/hash.c
@@ -0,0 +1,295 @@
+/* Hash tables for Objective C internal structures
+   Copyright (C) 1993, 1996, 1997, 2004, 2009, 2010
+   Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "objc-private/common.h"
+#include <assert.h>               /* For assert.  */
+
+#include "objc/runtime.h"         /* For objc_calloc.  */
+#include "objc-private/hash.h"
+
+/* These two macros determine when a hash table is full and
+   by how much it should be expanded respectively.
+
+   These equations are percentages.  */
+#define FULLNESS(cache) \
+   ((((cache)->size * 75) / 100) <= (cache)->used)
+#define EXPANSION(cache) \
+  ((cache)->size * 2)
+
+cache_ptr
+objc_hash_new (unsigned int size, hash_func_type hash_func,
+	       compare_func_type compare_func)
+{
+  cache_ptr cache;
+
+  /* Pass me a value greater than 0 and a power of 2.  */
+  assert (size);
+  assert (! (size & (size - 1)));
+
+  /* Allocate the cache structure.  calloc insures its initialization
+     for default values.  */
+  cache = (cache_ptr) objc_calloc (1, sizeof (struct cache));
+  assert (cache);
+
+  /* Allocate the array of buckets for the cache.  calloc initializes
+     all of the pointers to NULL.  */
+  cache->node_table
+    = (node_ptr *) objc_calloc (size, sizeof (node_ptr));
+  assert (cache->node_table);
+
+  cache->size  = size;
+
+  /* This should work for all processor architectures (?).  */
+  cache->mask = (size - 1);
+	
+  /* Store the hashing function so that codes can be computed.  */
+  cache->hash_func = hash_func;
+
+  /* Store the function that compares hash keys to determine if they
+     are equal.  */
+  cache->compare_func = compare_func;
+
+  return cache;
+}
+
+
+void
+objc_hash_delete (cache_ptr cache)
+{
+  node_ptr node;
+  node_ptr next_node;
+  unsigned int i;
+
+  /* Purge all key/value pairs from the table.  */
+  /* Step through the nodes one by one and remove every node WITHOUT
+     using objc_hash_next. this makes objc_hash_delete much more
+     efficient. */
+  for (i = 0; i < cache->size; i++)
+    {
+      if ((node = cache->node_table[i]))
+	{
+	  /* An entry in the hash table has been found.  Now step
+	     through the nodes next in the list and free them.  */
+	  while ((next_node = node->next))
+	    {
+	      objc_hash_remove (cache,node->key);
+	      node = next_node;
+	    }
+	  objc_hash_remove (cache,node->key);
+	}
+    }
+
+  /* Release the array of nodes and the cache itself.  */
+  objc_free(cache->node_table);
+  objc_free(cache);
+}
+
+
+void
+objc_hash_add (cache_ptr *cachep, const void *key, void *value)
+{
+  size_t indx = (*(*cachep)->hash_func) (*cachep, key);
+  node_ptr node = (node_ptr) objc_calloc (1, sizeof (struct cache_node));
+
+  assert (node);
+
+  /* Initialize the new node.  */
+  node->key    = key;
+  node->value  = value;
+  node->next  = (*cachep)->node_table[indx];
+
+  /* Debugging.  Check the list for another key.  */
+#ifdef DEBUG
+  {
+    node_ptr node1 = (*cachep)->node_table[indx];
+    while (node1)
+      {
+	assert (node1->key != key);
+	node1 = node1->next;
+      }
+  }
+#endif
+
+  /* Install the node as the first element on the list.  */
+  (*cachep)->node_table[indx] = node;
+
+  /* Bump the number of entries in the cache.  */
+  ++(*cachep)->used;
+  
+  /* Check the hash table's fullness.  We're going to expand if it is
+     above the fullness level.  */
+  if (FULLNESS (*cachep))
+    {
+      /* The hash table has reached its fullness level.  Time to
+	 expand it.
+
+	 I'm using a slow method here but is built on other primitive
+	 functions thereby increasing its correctness.  */
+      node_ptr node1 = NULL;
+      cache_ptr new = objc_hash_new (EXPANSION (*cachep),
+				     (*cachep)->hash_func,
+				     (*cachep)->compare_func);
+      
+      DEBUG_PRINTF ("Expanding cache %#x from %d to %d\n",
+		    (int) *cachep, (*cachep)->size, new->size);
+      
+      /* Copy the nodes from the first hash table to the new one.  */
+      while ((node1 = objc_hash_next (*cachep, node1)))
+	objc_hash_add (&new, node1->key, node1->value);
+      
+      /* Trash the old cache.  */
+      objc_hash_delete (*cachep);
+      
+      /* Return a pointer to the new hash table.  */
+      *cachep = new;
+    }
+}
+
+void
+objc_hash_remove (cache_ptr cache, const void *key)
+{
+  size_t indx = (*cache->hash_func) (cache, key);
+  node_ptr node = cache->node_table[indx];
+
+  /* We assume there is an entry in the table.  Error if it is
+     not.  */
+  assert (node);
+
+  /* Special case.  First element is the key/value pair to be
+     removed.  */
+  if ((*cache->compare_func) (node->key, key))
+    {
+      cache->node_table[indx] = node->next;
+      objc_free(node);
+    }
+  else
+    {
+      /* Otherwise, find the hash entry.  */
+      node_ptr prev = node;
+      BOOL removed = NO;
+      do
+	{
+	  if ((*cache->compare_func) (node->key, key))
+	    {
+	      prev->next = node->next, removed = YES;
+	      objc_free(node);
+	    }
+	  else
+	    prev = node, node = node->next;
+	}
+      while (!removed && node);
+      assert (removed);
+    }
+  
+  /* Decrement the number of entries in the hash table.  */
+  --cache->used;
+}
+
+
+node_ptr
+objc_hash_next (cache_ptr cache, node_ptr node)
+{
+  /* If the scan is being started then reset the last node visitied
+     pointer and bucket index.  */
+  if (!node)
+    cache->last_bucket  = 0;
+  
+  /* If there is a node visited last then check for another entry in
+     the same bucket.  Otherwise step to the next bucket.  */
+  if (node)
+    {
+      if (node->next)
+	{
+	  /* There is a node which follows the last node returned.
+	     Step to that node and retun it.  */
+	  return node->next;
+	}
+      else
+	++cache->last_bucket;
+  }
+
+  /* If the list isn't exhausted then search the buckets for other
+     nodes.  */
+  if (cache->last_bucket < cache->size)
+    {
+      /*  Scan the remainder of the buckets looking for an entry at
+	  the head of the list.  Return the first item found.  */
+      while (cache->last_bucket < cache->size)
+	if (cache->node_table[cache->last_bucket])
+	  return cache->node_table[cache->last_bucket];
+	else
+	  ++cache->last_bucket;
+      
+      /* No further nodes were found in the hash table.  */
+      return NULL;
+    }
+  else
+    return NULL;
+}
+
+
+/* Given KEY, return corresponding value for it in CACHE.  Return NULL
+   if the KEY is not recorded.  */
+void *
+objc_hash_value_for_key (cache_ptr cache, const void *key)
+{
+  node_ptr node = cache->node_table[(*cache->hash_func) (cache, key)];
+  void *retval = NULL;
+
+  if (node)
+    do
+      {
+	if ((*cache->compare_func) (node->key, key))
+	  {
+	    retval = node->value;
+	    break;
+	  }
+	else
+	  node = node->next;
+      }
+    while (! retval && node);
+  
+  return retval;
+}
+
+/* Given KEY, return YES if it exists in the CACHE.  Return NO if it
+   does not */
+BOOL
+objc_hash_is_key_in_hash (cache_ptr cache, const void *key)
+{
+  node_ptr node = cache->node_table[(*cache->hash_func) (cache, key)];
+  
+  if (node)
+    do
+      {
+	if ((*cache->compare_func)(node->key, key))
+	  return YES;
+	else
+	  node = node->next;
+      }
+    while (node);
+
+  return NO;
+}
diff --git a/libobjc/init.c b/libobjc/init.c
new file mode 100644
index 000000000..23ba41ba1
--- /dev/null
+++ b/libobjc/init.c
@@ -0,0 +1,1044 @@
+/* GNU Objective C Runtime initialization 
+   Copyright (C) 1993, 1995, 1996, 1997, 2002, 2009, 2010
+   Free Software Foundation, Inc.
+   Contributed by Kresten Krab Thorup
+   +load support contributed by Ovidiu Predescu <ovidiu@net-community.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+/* Uncommented the following line to enable debug logging.  Use this
+   only while debugging the runtime.  */
+/* #define DEBUG 1 */
+
+#include "objc-private/common.h"
+#include "objc-private/error.h"
+#include "objc/runtime.h"
+#include "objc/thr.h"
+#include "objc-private/hash.h"
+#include "objc-private/objc-list.h" 
+#include "objc-private/module-abi-8.h" 
+#include "objc-private/runtime.h"   /* For __objc_resolve_class_links().  */
+#include "objc-private/selector.h"  /* For __sel_register_typed_name().  */
+#include "objc-private/objc-sync.h" /* For __objc_sync_init() */
+#include "objc-private/protocols.h" /* For __objc_protocols_init(),
+				       __objc_protocols_add_protocol()
+				       __objc_protocols_register_selectors() */
+#include "objc-private/accessors.h" /* For __objc_accessors_init() */
+
+/* The version number of this runtime.  This must match the number
+   defined in gcc (objc-act.c).  */
+#define OBJC_VERSION 8
+#define PROTOCOL_VERSION 2
+
+/* This list contains modules currently loaded into the runtime and
+   for which the +load method (and the load callback, if any) has not
+   been called yet.  */
+static struct objc_list *__objc_module_list = 0; 	/* !T:MUTEX */
+
+/* This list contains all proto_list's not yet assigned class
+   links.  */
+static struct objc_list *unclaimed_proto_list = 0; 	/* !T:MUTEX */
+
+/* List of unresolved static instances.  */
+static struct objc_list *uninitialized_statics = 0; 	/* !T:MUTEX */
+
+/* List of duplicated classes found while loading modules.  If we find
+   a class twice, we ignore it the second time.  On some platforms,
+   where the order in which modules are loaded is well defined, this
+   allows you to replace a class in a shared library by linking in a
+   new implementation which is loaded in in the right order, and which
+   overrides the existing one.
+
+   Protected by __objc_runtime_mutex.  */
+static cache_ptr duplicate_classes = NULL;
+
+/* Global runtime "write" mutex.  Having a single mutex prevents
+   deadlocks, but reduces concurrency.  To improve concurrency, some
+   groups of functions in the runtime have their own separate mutex
+   (eg, __class_table_lock in class.c); to avoid deadlocks, these
+   routines must make sure that they never acquire any other lock
+   while holding their own local lock.  Ie, they should lock, execute
+   some C code that does not perform any calls to other runtime
+   functions which may potentially lock different locks, then unlock.
+   If they need to perform any calls to other runtime functions that
+   may potentially lock other locks, then they should use the global
+   __objc_runtime_mutex.  */
+objc_mutex_t __objc_runtime_mutex = 0;
+
+/* Number of threads that are alive.  */
+int __objc_runtime_threads_alive = 1;			/* !T:MUTEX */
+
+/* Check compiler vs runtime version.  */
+static void init_check_module_version (struct objc_module *);
+
+/* Assign isa links to protos.  */
+static void __objc_init_protocols (struct objc_protocol_list *protos);
+
+/* Assign isa link to a protocol, and register it.  */
+static void __objc_init_protocol (struct objc_protocol *protocol);
+
+/* Add protocol to class.  */
+static void __objc_class_add_protocols (Class, struct objc_protocol_list *);
+
+/* Load callback hook.  */
+void (*_objc_load_callback) (Class class, struct objc_category *category) = 0; /* !T:SAFE */
+
+/* Are all categories/classes resolved ?  */
+BOOL __objc_dangling_categories = NO;           /* !T:UNUSED */
+
+/* Sends +load to all classes and categories in certain
+   situations.  */
+static void objc_send_load (void);
+
+/* Inserts all the classes defined in module in a tree of classes that
+   resembles the class hierarchy.  This tree is traversed in preorder
+   and the classes in its nodes receive the +load message if these
+   methods were not executed before.  The algorithm ensures that when
+   the +load method of a class is executed all the superclasses have
+   been already received the +load message.  */
+static void __objc_create_classes_tree (struct objc_module *module);
+
+/* Calls the _objc_load_callback for each class and category in the
+   module (if _objc_load_callback is not NULL).  */
+static void __objc_call_load_callback (struct objc_module *module);
+
+/* A special version that works only before the classes are completely
+   installed in the runtime.  */
+static BOOL class_is_subclass_of_class (Class class, Class superclass);
+
+/* This is a node in the class tree hierarchy used to send +load
+   messages.  */
+typedef struct objc_class_tree
+{
+  /* The class corresponding to the node.  */
+  Class class;
+
+  /* This is a linked list of all the direct subclasses of this class.
+     'head' points to a subclass node; 'tail' points to the next
+     objc_list node (whose 'head' points to another subclass node,
+     etc).  */
+  struct objc_list *subclasses;
+} objc_class_tree;
+
+/* This is a linked list of objc_class_tree trees.  The head of these
+   trees are root classes (their super class is Nil).  These different
+   trees represent different class hierarchies.  */
+static struct objc_list *__objc_class_tree_list = NULL;
+
+/* Keeps the +load methods who have been already executed. This hash
+   should not be destroyed during the execution of the program.  */
+static cache_ptr __objc_load_methods = NULL;
+
+/* This function is used when building the class tree used to send
+   ordinately the +load message to all classes needing it.  The tree
+   is really needed so that superclasses will get the message before
+   subclasses.
+
+   This tree may contain classes which are being loaded (or have just
+   being loaded), and whose super_class pointers have not yet been
+   resolved.  This implies that their super_class pointers point to a
+   string with the name of the superclass; when the first message is
+   sent to the class (/an object of that class) the class links will
+   be resolved, which will replace the super_class pointers with
+   pointers to the actual superclasses.
+
+   Unfortunately, the tree might also contain classes which had been
+   loaded previously, and whose class links have already been
+   resolved.
+
+   This function returns the superclass of a class in both cases, and
+   can be used to build the determine the class relationships while
+   building the tree.  */
+static Class  class_superclass_of_class (Class class)
+{
+  char *super_class_name;
+
+  /* If the class links have been resolved, use the resolved
+     links.  */
+  if (CLS_ISRESOLV (class))
+    return class->super_class;
+  
+  /* Else, 'class' has not yet been resolved.  This means that its
+     super_class pointer is really the name of the super class (rather
+     than a pointer to the actual superclass).  */
+  super_class_name = (char *)class->super_class;
+
+  /* Return Nil for a root class.  */
+  if (super_class_name == NULL)
+    return Nil;
+
+  /* Lookup the superclass of non-root classes.  */
+  return objc_getClass (super_class_name);
+}
+
+
+/* Creates a tree of classes whose topmost class is directly inherited
+   from `upper' and the bottom class in this tree is `bottom_class'.
+   If `upper' is Nil, creates a class hierarchy up to a root class.
+   The classes in this tree are super classes of `bottom_class'.  The
+   `subclasses' member of each tree node point to the list of
+   subclasses for the node.  */
+static objc_class_tree *
+create_tree_of_subclasses_inherited_from (Class bottom_class, Class upper)
+{
+  Class superclass;
+  objc_class_tree *tree, *prev;
+
+  DEBUG_PRINTF ("create_tree_of_subclasses_inherited_from:");
+  DEBUG_PRINTF (" bottom_class = %s, upper = %s\n",
+		(bottom_class ? bottom_class->name : NULL),
+		(upper ? upper->name : NULL));
+
+  superclass = class_superclass_of_class (bottom_class);
+
+  prev = objc_calloc (1, sizeof (objc_class_tree));
+  prev->class = bottom_class;
+
+  if (superclass == upper)
+    return prev;
+
+  while (superclass != upper)
+    {
+      tree = objc_calloc (1, sizeof (objc_class_tree));
+      tree->class = superclass;
+      tree->subclasses = list_cons (prev, tree->subclasses);
+      superclass = class_superclass_of_class (superclass);
+      prev = tree;
+    }
+
+  return tree;
+}
+
+/* Insert the `class' into the proper place in the `tree' class
+   hierarchy.  This function returns a new tree if the class has been
+   successfully inserted into the tree or NULL if the class is not
+   part of the classes hierarchy described by `tree'.  This function
+   is private to objc_tree_insert_class (), you should not call it
+   directly.  */
+static objc_class_tree *
+__objc_tree_insert_class (objc_class_tree *tree, Class class)
+{
+  DEBUG_PRINTF ("__objc_tree_insert_class: tree = %p (root: %s), class = %s\n",
+		tree, ((tree && tree->class) ? tree->class->name : "Nil"), class->name);
+
+  if (tree == NULL)
+    return create_tree_of_subclasses_inherited_from (class, NULL);
+  else if (class == tree->class)
+    {
+      /* `class' has been already inserted.  */
+      DEBUG_PRINTF (" 1. class %s was previously inserted\n", class->name);
+      return tree;
+    }
+  else if (class_superclass_of_class (class) == tree->class)
+    {
+      /* If class is a direct subclass of tree->class then add class
+	 to the list of subclasses. First check to see if it wasn't
+	 already inserted.  */
+      struct objc_list *list = tree->subclasses;
+      objc_class_tree *node;
+
+      while (list)
+	{
+	  /* Class has been already inserted; do nothing just return
+	     the tree.  */
+	  if (((objc_class_tree *) list->head)->class == class)
+	    {
+	      DEBUG_PRINTF (" 2. class %s was previously inserted\n",
+			    class->name);
+	      return tree;
+	    }
+	  list = list->tail;
+	}
+
+      /* Create a new node class and insert it into the list of
+	 subclasses.  */
+      node = objc_calloc (1, sizeof (objc_class_tree));
+      node->class = class;
+      tree->subclasses = list_cons (node, tree->subclasses);
+      DEBUG_PRINTF (" 3. class %s inserted\n", class->name);
+      return tree;
+    }
+  else
+    {
+      /* The class is not a direct subclass of tree->class.  Search
+         for class's superclasses in the list of subclasses.  */
+      struct objc_list *subclasses = tree->subclasses;
+
+      /* Precondition: the class must be a subclass of tree->class;
+         otherwise return NULL to indicate our caller that it must
+         take the next tree.  */
+      if (! class_is_subclass_of_class (class, tree->class))
+	return NULL;
+
+      for (; subclasses != NULL; subclasses = subclasses->tail)
+	{
+	  Class aClass = ((objc_class_tree *) (subclasses->head))->class;
+
+	  if (class_is_subclass_of_class (class, aClass))
+	    {
+	      /* If we found one of class's superclasses we insert the
+	         class into its subtree and return the original tree
+	         since nothing has been changed.  */
+	      subclasses->head
+		  = __objc_tree_insert_class (subclasses->head, class);
+ 	      DEBUG_PRINTF (" 4. class %s inserted\n", class->name);
+	      return tree;
+	    }
+	}
+
+      /* We haven't found a subclass of `class' in the `subclasses'
+         list.  Create a new tree of classes whose topmost class is a
+         direct subclass of tree->class.  */
+      {
+	objc_class_tree *new_tree
+	  = create_tree_of_subclasses_inherited_from (class, tree->class);
+	tree->subclasses = list_cons (new_tree, tree->subclasses);
+ 	DEBUG_PRINTF (" 5. class %s inserted\n", class->name);
+	return tree;
+      }
+    }
+}
+
+/* This function inserts `class' in the right tree hierarchy classes.  */
+static void
+objc_tree_insert_class (Class class)
+{
+  struct objc_list *list_node;
+  objc_class_tree *tree;
+  
+  list_node = __objc_class_tree_list;
+  while (list_node)
+    {
+      /* Try to insert the class in this class hierarchy.  */
+      tree = __objc_tree_insert_class (list_node->head, class);
+      if (tree)
+	{
+	  list_node->head = tree;
+	  return;
+	}
+      else
+	list_node = list_node->tail;
+    }
+  
+  /* If the list was finished but the class hasn't been inserted, we
+     don't have an existing class hierarchy that can accomodate it.
+     Create a new one.  */
+  __objc_class_tree_list = list_cons (NULL, __objc_class_tree_list);
+  __objc_class_tree_list->head = __objc_tree_insert_class (NULL, class);
+}
+
+/* Traverse tree in preorder. Used to send +load.  */
+static void
+objc_preorder_traverse (objc_class_tree *tree,
+			int level,
+			void (*function) (objc_class_tree *, int))
+{
+  struct objc_list *node;
+
+  (*function) (tree, level);
+  for (node = tree->subclasses; node; node = node->tail)
+    objc_preorder_traverse (node->head, level + 1, function);
+}
+
+/* Traverse tree in postorder. Used to destroy a tree.  */
+static void
+objc_postorder_traverse (objc_class_tree *tree,
+			 int level,
+			 void (*function) (objc_class_tree *, int))
+{
+  struct objc_list *node;
+
+  for (node = tree->subclasses; node; node = node->tail)
+    objc_postorder_traverse (node->head, level + 1, function);
+  (*function) (tree, level);
+}
+
+/* Used to print a tree class hierarchy.  */
+#ifdef DEBUG
+static void
+__objc_tree_print (objc_class_tree *tree, int level)
+{
+  int i;
+
+  for (i = 0; i < level; i++)
+    printf ("  ");
+  printf ("%s\n", tree->class->name);
+}
+#endif
+
+/* Walks on a linked list of methods in the reverse order and executes
+   all the methods corresponding to the `+load' selector.  Walking in
+   the reverse order assures the +load of class is executed first and
+   then +load of categories because of the way in which categories are
+   added to the class methods.  This function needs to be called with
+   the objc_runtime_mutex locked.  */
+static void
+__objc_send_load_using_method_list (struct objc_method_list *method_list, Class class)
+{
+  static SEL load_selector = 0;
+  int i;
+
+  if (!method_list)
+    return;
+
+  /* This needs no lock protection because we are called with the
+     objc_runtime_mutex locked.  */
+  if (!load_selector)
+    load_selector = sel_registerName ("load");
+
+  /* method_list is a linked list of method lists; since we're
+     executing in reverse order, we need to do the next list before we
+     do this one.  */
+  __objc_send_load_using_method_list (method_list->method_next, class);
+
+  /* Search the method list.  */
+  for (i = 0; i < method_list->method_count; i++)
+    {
+      struct objc_method *mth = &method_list->method_list[i];
+
+      /* We are searching for +load methods that we haven't executed
+	 yet.  */
+      if (mth->method_name && sel_eq (mth->method_name, load_selector)
+	  && ! objc_hash_is_key_in_hash (__objc_load_methods, mth->method_imp))
+	{
+	  /* Add this method into the +load hash table, so we won't
+	     execute it again next time.  */
+	  objc_hash_add (&__objc_load_methods,
+			 mth->method_imp,
+			 mth->method_imp);
+	  
+	  /* Call +load.  */
+	  DEBUG_PRINTF (" begin of [%s +load]\n", class->name);
+	  (*mth->method_imp) ((id)class, mth->method_name);
+	  DEBUG_PRINTF (" end of [%s +load]\n", class->name);
+
+	  break;
+	}
+    }
+}
+
+/* This function needs to be called with the objc_runtime_mutex
+   locked.  */
+static void
+__objc_send_load (objc_class_tree *tree,
+		  int level __attribute__ ((__unused__)))
+{
+  Class class = tree->class;
+  struct objc_method_list *method_list = class->class_pointer->methods;
+
+  DEBUG_PRINTF ("+load: need to send load to class '%s'\n", class->name);
+  __objc_send_load_using_method_list (method_list, class);
+}
+
+static void
+__objc_destroy_class_tree_node (objc_class_tree *tree,
+				int level __attribute__ ((__unused__)))
+{
+  objc_free (tree);
+}
+
+/* This is used to check if the relationship between two classes
+   before the runtime completely installs the classes.  */
+static BOOL
+class_is_subclass_of_class (Class class, Class superclass)
+{
+  for (; class != Nil;)
+    {
+      if (class == superclass)
+	return YES;
+      class = class_superclass_of_class (class);
+    }
+
+  return NO;
+}
+
+/* This list contains all the classes in the runtime system for whom
+   their superclasses are not yet known to the runtime.  */
+static struct objc_list *unresolved_classes = 0;
+
+/* Extern function used to reference the Object class.  */
+extern void __objc_force_linking (void);
+
+void
+__objc_force_linking (void)
+{
+  extern void __objc_linking (void);
+  __objc_linking ();
+}
+
+/* Run through the statics list, removing modules as soon as all its
+   statics have been initialized.  */
+static void
+objc_init_statics (void)
+{
+  struct objc_list **cell = &uninitialized_statics;
+  struct objc_static_instances **statics_in_module;
+
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  while (*cell)
+    {
+      int module_initialized = 1;
+
+      for (statics_in_module = (*cell)->head;
+	   *statics_in_module; statics_in_module++)
+	{
+	  struct objc_static_instances *statics = *statics_in_module;
+	  Class class = objc_getClass (statics->class_name);
+
+	  if (! class)
+	    {
+	      /* It is unfortunate that this will cause all the
+		 statics initialization to be done again (eg, if we
+		 already initialized constant strings, and are now
+		 initializing protocols, setting module_initialized to
+		 0 would cause constant strings to be initialized
+		 again).  It would be good to be able to track if we
+		 have already initialized some of them.  */
+	      module_initialized = 0;
+	    }
+	  else
+	    {
+	      /* Note that if this is a list of Protocol objects, some
+		 of them may have been initialized already (because
+		 they were attached to classes or categories, and the
+		 class/category loading code automatically fixes them
+		 up), and some of them may not.  We really need to go
+		 through the whole list to be sure!  Protocols are
+		 also special because we want to register them and
+		 register all their selectors.  */
+	      id *inst;
+
+	      if (strcmp (statics->class_name, "Protocol") == 0)
+		{
+		  /* Protocols are special, because not only we want
+		     to fix up their class pointers, but we also want
+		     to register them and their selectors with the
+		     runtime.  */
+		  for (inst = &statics->instances[0]; *inst; inst++)
+		    __objc_init_protocol ((struct objc_protocol *)*inst);
+		}
+	      else
+		{
+		  /* Other static instances (typically constant
+		     strings) are easier as we just fix up their class
+		     pointers.  */
+		  for (inst = &statics->instances[0]; *inst; inst++)		  
+		    (*inst)->class_pointer = class;
+		}
+	    }
+	}
+      if (module_initialized)
+	{
+	  /* Remove this module from the uninitialized list.  */
+	  struct objc_list *this = *cell;
+	  *cell = this->tail;
+	  objc_free (this);
+	}
+      else
+	cell = &(*cell)->tail;
+    }
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+}
+
+/* This function is called by constructor functions generated for each
+   module compiled.  (_GLOBAL_$I$...) The purpose of this function is
+   to gather the module pointers so that they may be processed by the
+   initialization routines as soon as possible.  */
+void
+__objc_exec_class (struct objc_module *module)
+{
+  /* Have we processed any constructors previously?  This flag is used
+     to indicate that some global data structures need to be
+     built.  */
+  static BOOL previous_constructors = 0;
+
+  static struct objc_list *unclaimed_categories = 0;
+
+  /* The symbol table (defined in objc-private/module-abi-8.h)
+     generated by gcc.  */
+  struct objc_symtab *symtab = module->symtab;
+
+  /* The statics in this module.  */
+  struct objc_static_instances **statics
+    = symtab->defs[symtab->cls_def_cnt + symtab->cat_def_cnt];
+
+  /* Entry used to traverse hash lists.  */
+  struct objc_list **cell;
+
+  /* The table of selector references for this module.  */
+  struct objc_selector *selectors = symtab->refs;
+
+  int i;
+
+  DEBUG_PRINTF ("\n__objc_exec_class (%p) - start processing module...\n", module);
+
+  /* Check gcc version.  */
+  init_check_module_version (module);
+
+  /* On the first call of this routine, initialize some data
+     structures.  */
+  if (! previous_constructors)
+    {
+	/* Initialize thread-safe system.  */
+      __objc_init_thread_system ();
+      __objc_runtime_threads_alive = 1;
+      __objc_runtime_mutex = objc_mutex_allocate ();
+
+      __objc_init_selector_tables ();
+      __objc_init_class_tables ();
+      __objc_init_dispatch_tables ();
+      duplicate_classes = objc_hash_new (8,
+					 (hash_func_type)objc_hash_ptr,
+					 objc_compare_ptrs);
+      __objc_load_methods = objc_hash_new (128, 
+					   (hash_func_type)objc_hash_ptr,
+					   objc_compare_ptrs);
+      __objc_protocols_init ();
+      __objc_accessors_init ();
+      __objc_sync_init ();
+      previous_constructors = 1;
+    }
+
+  /* Save the module pointer so that later we remember to call +load
+     on all classes and categories on it.  */
+  objc_mutex_lock (__objc_runtime_mutex);
+  __objc_module_list = list_cons (module, __objc_module_list);
+
+  /* Replace referenced selectors from names to SELs.  */
+  if (selectors)
+    {
+      DEBUG_PRINTF (" registering selectors\n");
+      __objc_register_selectors_from_module (selectors);
+    }
+
+  /* Parse the classes in the load module and gather selector
+     information.  */
+  for (i = 0; i < symtab->cls_def_cnt; ++i)
+    {
+      Class class = (Class) symtab->defs[i];
+      const char *superclass = (char *) class->super_class;
+
+      /* Make sure we have what we think.  */
+      assert (CLS_ISCLASS (class));
+      assert (CLS_ISMETA (class->class_pointer));
+      DEBUG_PRINTF (" installing class '%s'\n", class->name);
+
+      /* Workaround for a bug in clang: Clang may set flags other than
+	 _CLS_CLASS and _CLS_META even when compiling for the
+	 traditional ABI (version 8), confusing our runtime.  Try to
+	 wipe these flags out.  */
+      if (CLS_ISCLASS (class))
+	__CLS_INFO (class) = _CLS_CLASS;
+      else
+	__CLS_INFO (class) = _CLS_META;
+
+      /* Initialize the subclass list to be NULL.  In some cases it
+	 isn't and this crashes the program.  */
+      class->subclass_list = NULL;
+
+      if (__objc_init_class (class))
+	{
+	  /* Check to see if the superclass is known in this point. If
+	     it's not add the class to the unresolved_classes list.  */
+	  if (superclass && ! objc_getClass (superclass))
+	    unresolved_classes = list_cons (class, unresolved_classes);
+	}
+    }
+
+  /* Process category information from the module.  */
+  for (i = 0; i < symtab->cat_def_cnt; ++i)
+    {
+      struct objc_category *category = symtab->defs[i + symtab->cls_def_cnt];
+      Class class = objc_getClass (category->class_name);
+      
+      /* If the class for the category exists then append its
+	 methods.  */
+      if (class)
+	{
+	  DEBUG_PRINTF (" installing category '%s (%s)'\n", category->class_name, category->category_name);
+	  /* Do instance methods.  */
+	  if (category->instance_methods)
+	    class_add_method_list (class, category->instance_methods);
+
+	  /* Do class methods.  */
+	  if (category->class_methods)
+	    class_add_method_list ((Class) class->class_pointer, 
+				   category->class_methods);
+
+	  if (category->protocols)
+	    {
+	      __objc_init_protocols (category->protocols);
+	      __objc_class_add_protocols (class, category->protocols);
+	    }
+
+          /* Register the instance methods as class methods, this is
+             only done for root classes.  */
+          __objc_register_instance_methods_to_class (class);
+	}
+      else
+	{
+	  DEBUG_PRINTF (" delaying installation of category '%s (%s)'\n", category->class_name, category->category_name);
+	  /* The object to which the category methods belong can't be
+	     found.  Save the information.  */
+	  unclaimed_categories = list_cons (category, unclaimed_categories);
+	}
+    }
+
+  if (statics)
+    uninitialized_statics = list_cons (statics, uninitialized_statics);
+  if (uninitialized_statics)
+    objc_init_statics ();
+
+  /* Scan the unclaimed category hash.  Attempt to attach any
+     unclaimed categories to objects.  */
+  for (cell = &unclaimed_categories; *cell; )
+    {
+      struct objc_category *category = (*cell)->head;
+      Class class = objc_getClass (category->class_name);
+      
+      if (class)
+	{
+	  DEBUG_PRINTF (" installing (delayed) category '%s (%s)'\n", category->class_name, category->category_name);
+	  list_remove_head (cell);
+	  
+	  if (category->instance_methods)
+	    class_add_method_list (class, category->instance_methods);
+	  
+	  if (category->class_methods)
+	    class_add_method_list ((Class) class->class_pointer,
+				   category->class_methods);
+
+	  if (category->protocols)
+	    {
+	      __objc_init_protocols (category->protocols);
+	      __objc_class_add_protocols (class, category->protocols);
+	    }
+
+          /* Register the instance methods as class methods, this is
+             only done for root classes.  */
+          __objc_register_instance_methods_to_class (class);
+	}
+      else
+	cell = &(*cell)->tail;
+    }
+  
+  if (unclaimed_proto_list && objc_getClass ("Protocol"))
+    {
+      list_mapcar (unclaimed_proto_list,
+		   (void (*) (void *))__objc_init_protocols);
+      list_free (unclaimed_proto_list);
+      unclaimed_proto_list = 0;
+    }
+
+  objc_send_load ();
+
+  /* Check if there are no unresolved classes (ie, classes whose
+     superclass has not been loaded yet) and that the 'Object' class,
+     used as the class of classes, exist.  If so, it is worth
+     "resolving the class links" at this point, which will setup all
+     the class/superclass pointers.  */
+  if (!unresolved_classes && objc_getClass ("Object"))
+    {
+      DEBUG_PRINTF (" resolving class links\n");
+      __objc_resolve_class_links ();
+    }
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+
+  DEBUG_PRINTF ("__objc_exec_class (%p) - finished processing module...\n\n", module);
+}
+
+/* This function needs to be called with the objc_runtime_mutex
+   locked.  */
+static void
+objc_send_load (void)
+{
+  if (!__objc_module_list)
+    return;
+ 
+  /* Try to find out if all the classes loaded so far also have their
+     superclasses known to the runtime.  We suppose that the objects
+     that are allocated in the +load method are in general of a class
+     declared in the same module.  */
+  if (unresolved_classes)
+    {
+      Class class = unresolved_classes->head;
+
+      while (objc_getClass ((char *) class->super_class))
+	{
+	  list_remove_head (&unresolved_classes);
+	  if (unresolved_classes)
+	    class = unresolved_classes->head;
+	  else
+	    break;
+	}
+
+      /* If we still have classes for whom we don't have yet their
+         super classes known to the runtime we don't send the +load
+         messages (and call the load callback) yet.  */
+      if (unresolved_classes)
+	return;
+    }
+
+  /* Special check.  If 'Object', which is used by meta-classes, has
+     not been loaded yet, delay sending of +load.  */
+  if (! objc_getClass ("Object"))
+    return;
+
+  /* Iterate over all modules in the __objc_module_list and call on
+     them the __objc_create_classes_tree function.  This function
+     creates a tree of classes that resembles the class hierarchy.  */
+  list_mapcar (__objc_module_list,
+	       (void (*) (void *)) __objc_create_classes_tree);
+
+  while (__objc_class_tree_list)
+    {
+#ifdef DEBUG
+      objc_preorder_traverse (__objc_class_tree_list->head,
+			      0, __objc_tree_print);
+#endif
+      objc_preorder_traverse (__objc_class_tree_list->head,
+			      0, __objc_send_load);
+      objc_postorder_traverse (__objc_class_tree_list->head,
+			      0, __objc_destroy_class_tree_node);
+      list_remove_head (&__objc_class_tree_list);
+    }
+
+  /* For each module, call the _objc_load_callback if any is
+     defined.  */
+  list_mapcar (__objc_module_list, (void (*) (void *)) __objc_call_load_callback);
+
+  /* Empty the list of modules.  */
+  list_free (__objc_module_list);
+  __objc_module_list = NULL;
+}
+
+static void
+__objc_create_classes_tree (struct objc_module *module)
+{
+  /* The runtime mutex is locked at this point */
+  struct objc_symtab *symtab = module->symtab;
+  int i;
+
+  /* Iterate thru classes defined in this module and insert them in
+     the classes tree hierarchy.  */
+  for (i = 0; i < symtab->cls_def_cnt; i++)
+    {
+      Class class = (Class) symtab->defs[i];
+
+      if (!objc_hash_is_key_in_hash (duplicate_classes, class))
+	objc_tree_insert_class (class);
+    }
+
+  /* Now iterate over "claimed" categories too (ie, categories that
+     extend a class that has already been loaded by the runtime), and
+     insert them in the classes tree hiearchy too.  Otherwise, if you
+     add a category, its +load method would not be called if the class
+     is already loaded in the runtime.  It the category is
+     "unclaimed", ie, we haven't loaded the main class yet, postpone
+     sending +load as we want to execute +load from the class before
+     we execute the one from the category.  */
+  for (i = 0; i < symtab->cat_def_cnt; ++i)
+    {
+      struct objc_category *category = symtab->defs[i + symtab->cls_def_cnt];
+      Class class = objc_getClass (category->class_name);
+      
+      /* If the class for the category exists then append its
+	 methods.  */
+      if (class)
+	objc_tree_insert_class (class);
+    }
+}
+
+static void
+__objc_call_load_callback (struct objc_module *module)
+{
+  if (_objc_load_callback)
+    {
+      /* The runtime mutex is locked at this point.  */
+      struct objc_symtab *symtab = module->symtab;
+      int i;
+      
+      /* Iterate thru classes defined in this module and call the callback
+	 for each one.  */
+      for (i = 0; i < symtab->cls_def_cnt; i++)
+	{
+	  Class class = (Class) symtab->defs[i];
+	
+	  if (!objc_hash_is_key_in_hash (duplicate_classes, class))
+	    {
+	      /* Call the _objc_load_callback for this class.  */
+	      DEBUG_PRINTF (" calling the load callback for class '%s'\n", class->name);
+	      _objc_load_callback (class, 0);
+	    }
+	}
+      
+      /* Call the _objc_load_callback for categories.  Don't register
+	 the instance methods as class methods for categories to root
+	 classes since they were already added in the class.  */
+      for (i = 0; i < symtab->cat_def_cnt; i++)
+	{
+	  struct objc_category *category = symtab->defs[i + symtab->cls_def_cnt];
+	  Class class = objc_getClass (category->class_name);
+	  
+	  DEBUG_PRINTF (" calling the load callback for category '%s (%s)'\n",
+			category->class_name, category->category_name);
+	  _objc_load_callback (class, category);
+	}
+    }
+}
+
+/* Sanity check the version of gcc used to compile `module'.  */
+static void
+init_check_module_version (struct objc_module *module)
+{
+  if ((module->version != OBJC_VERSION) || (module->size != sizeof (struct objc_module)))
+    {
+      _objc_abort ("Module %s version %d doesn't match runtime %d\n",
+		   module->name, (int)module->version, OBJC_VERSION);
+    }
+}
+
+/* __objc_init_class must be called with __objc_runtime_mutex already
+   locked.  Return YES if the class could be setup; return NO if the
+   class could not be setup because a class with the same name already
+   exists.  */
+BOOL
+__objc_init_class (Class class)
+{
+  /* Store the class in the class table and assign class numbers.  */
+  if (__objc_add_class_to_hash (class))
+    {
+      /* Register all of the selectors in the class and meta class.  */
+      __objc_register_selectors_from_class (class);
+      __objc_register_selectors_from_class ((Class) class->class_pointer);
+      
+      /* Install the fake dispatch tables.  */
+      __objc_install_premature_dtable (class);
+      __objc_install_premature_dtable (class->class_pointer);
+      
+      /* Register the instance methods as class methods, this is only
+	 done for root classes.  */
+      __objc_register_instance_methods_to_class (class);
+      
+      if (class->protocols)
+	__objc_init_protocols (class->protocols);
+
+      return YES;
+    }
+  else
+    {
+      /* The module contains a duplicate class.  Remember it so that
+	 we will ignore it later.  */
+      DEBUG_PRINTF (" duplicate class '%s' - will be ignored\n", class->name);
+      objc_hash_add (&duplicate_classes, class, class);
+      return NO;
+    }
+}
+
+/* __objc_init_protocol must be called with __objc_runtime_mutex
+   already locked, and the "Protocol" class already registered.  */
+static void
+__objc_init_protocol (struct objc_protocol *protocol)
+{
+  static Class proto_class = 0;
+
+  if (! proto_class)
+    proto_class = objc_getClass ("Protocol");
+
+  if (((size_t)protocol->class_pointer) == PROTOCOL_VERSION)
+    {
+      /* Assign class pointer.  */
+      protocol->class_pointer = proto_class;
+      
+      /* Register all the selectors in the protocol with the runtime.
+	 This both registers the selectors with the right types, and
+	 it also fixes up the 'struct objc_method' structures inside
+	 the protocol so that each method_name (a char * as compiled
+	 by the compiler) is replaced with the appropriate runtime
+	 SEL.  */
+      if (protocol->class_methods)
+	__objc_register_selectors_from_description_list (protocol->class_methods);
+
+      if (protocol->instance_methods)
+	__objc_register_selectors_from_description_list (protocol->instance_methods);
+
+      /* Register the protocol in the hashtable or protocols by
+	 name.  */
+      __objc_protocols_add_protocol (protocol->protocol_name, protocol);
+      
+      /* Init super protocols.  */
+      __objc_init_protocols (protocol->protocol_list);
+    }
+  else if (protocol->class_pointer != proto_class)
+    {
+      _objc_abort ("Version %d doesn't match runtime protocol version %d\n",
+		   (int) ((char *) protocol->class_pointer
+			  - (char *) 0),
+		   PROTOCOL_VERSION);
+    }
+}
+
+static void
+__objc_init_protocols (struct objc_protocol_list *protos)
+{
+  size_t i;
+  static Class proto_class = 0;
+
+  if (! protos)
+    return;
+
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  if (! proto_class)
+    proto_class = objc_getClass ("Protocol");
+
+  if (! proto_class)
+    {
+      unclaimed_proto_list = list_cons (protos, unclaimed_proto_list);
+      objc_mutex_unlock (__objc_runtime_mutex);
+      return;
+    }
+
+#if 0
+  assert (protos->next == 0); /* Only single ones allowed.  */
+#endif
+
+  for (i = 0; i < protos->count; i++)
+    {
+      struct objc_protocol *aProto = protos->list[i];
+      __objc_init_protocol (aProto);
+    }
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+}
+
+static void
+__objc_class_add_protocols (Class class, struct objc_protocol_list *protos)
+{
+  if (! protos)
+    return;
+
+  protos->next = class->protocols;
+  class->protocols = protos;
+}
diff --git a/libobjc/ivars.c b/libobjc/ivars.c
new file mode 100644
index 000000000..6111a03ea
--- /dev/null
+++ b/libobjc/ivars.c
@@ -0,0 +1,376 @@
+/* GNU Objective C Runtime ivar related functions.
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Nicola Pero
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "objc-private/common.h"
+#include "objc/runtime.h"
+#include "objc-private/module-abi-8.h" /* For runtime structures  */
+#include "objc/thr.h"
+#include "objc-private/runtime.h"      /* the kitchen sink */
+#include <string.h>                    /* For strcmp.  */
+#include <stdlib.h>                    /* For malloc.  */
+
+struct objc_ivar *
+class_getInstanceVariable (Class class_, const char *name)
+{
+  if (class_ != Nil  &&  name != NULL  &&  ! CLS_IS_IN_CONSTRUCTION (class_))
+    {
+      while (class_ != Nil)
+	{
+	  struct objc_ivar_list *ivars = class_->ivars;
+	  if (ivars != NULL)
+	    {
+	      int i;
+	      
+	      for (i = 0; i < ivars->ivar_count; i++)
+		{
+		  struct objc_ivar *ivar = &(ivars->ivar_list[i]);
+		  
+		  if (!strcmp (ivar->ivar_name, name))
+		    return ivar;
+		}
+	    }
+	  class_ = class_getSuperclass (class_);
+	}
+    }
+  return NULL;
+}
+
+struct objc_ivar *
+class_getClassVariable (Class class_, const char *name)
+{
+  if (class_ == Nil)
+    return NULL;
+
+  /* Logically, since a class is an instance of its meta-class, and
+     since its class methods are the instance methods of the
+     meta-class, class variables should be instance variables of the
+     meta-class.  That is different from the normal use of having
+     'static' variables in the class implementation file, because
+     every class would have its own variables.
+
+     Anyway, it is all speculative at this stage, but if we get class
+     variables in Objective-C, it is conceivable that this
+     implementation should work.  */
+  return class_getInstanceVariable (class_->class_pointer, name);
+}
+
+void *
+object_getIndexedIvars (id object)
+{
+  if (object == nil)
+    return NULL;
+  else
+    return (void *)(((char *)object) 
+		    + object->class_pointer->instance_size);
+}
+
+struct objc_ivar *
+object_getInstanceVariable (id object, const char *name, void **returnValue)
+{
+  if (object == nil  ||  name == NULL)
+    return NULL;
+  else
+    {
+      struct objc_ivar * variable = class_getInstanceVariable (object->class_pointer, name);
+
+      if (variable != NULL  &&  returnValue != NULL)
+	{
+	  char *location = (char *)object + variable->ivar_offset;
+	 
+	  *returnValue = *((id *)location);
+	}
+
+      return variable;
+    }
+}
+
+struct objc_ivar *
+object_setInstanceVariable (id object, const char *name, void *newValue)
+{
+  if (object == nil  ||  name == NULL)
+    return NULL;
+  else
+    {
+      struct objc_ivar * variable = class_getInstanceVariable (object->class_pointer, name);
+
+      if (variable != NULL)
+	{
+	  char *location = (char *)object + variable->ivar_offset;
+	  
+	  *((id *)location) = (id)newValue;
+	}
+
+      return variable;
+    }
+}
+
+id object_getIvar (id object, struct objc_ivar * variable)
+{
+  if (object == nil  ||  variable == NULL)
+    return nil;
+  else
+    {
+      char *location = (char *)object + variable->ivar_offset;
+
+      return *((id *)location);
+    }
+}
+
+void object_setIvar (id object, struct objc_ivar * variable, id value)
+{
+  if (object == nil  ||  variable == NULL)
+    return;
+  else
+    {
+      char *location = (char *)object + variable->ivar_offset;
+
+      *((id *)location) = value;
+    }
+}
+
+const char * ivar_getName (struct objc_ivar * variable)
+{
+  if (variable == NULL)
+    return NULL;
+
+  return variable->ivar_name;
+}
+
+ptrdiff_t ivar_getOffset (struct objc_ivar * variable)
+{
+  if (variable == NULL)
+    return 0;
+
+  return (ptrdiff_t)(variable->ivar_offset);
+}
+
+const char * ivar_getTypeEncoding (struct objc_ivar * variable)
+{
+  if (variable == NULL)
+    return NULL;
+
+  return variable->ivar_type;
+}
+
+struct objc_ivar ** class_copyIvarList (Class class_, unsigned int *numberOfReturnedIvars)
+{
+  unsigned int count = 0;
+  struct objc_ivar **returnValue = NULL;
+  struct objc_ivar_list* ivar_list;
+
+  if (class_ == Nil  ||  CLS_IS_IN_CONSTRUCTION (class_))
+    {
+      if (numberOfReturnedIvars)
+	*numberOfReturnedIvars = 0;
+      return NULL;
+    }
+    
+  /* Count how many ivars we have.  */
+  ivar_list = class_->ivars;
+  count = ivar_list->ivar_count;
+
+  if (count != 0)
+    {
+      unsigned int i = 0;
+      
+      /* Allocate enough memory to hold them.  */
+      returnValue = (struct objc_ivar **)(malloc (sizeof (struct objc_ivar *) * (count + 1)));
+      
+      /* Copy the ivars.  */
+      for (i = 0; i < count; i++)
+	returnValue[i] = &(ivar_list->ivar_list[i]);
+      
+      returnValue[i] = NULL;
+    }
+  
+  if (numberOfReturnedIvars)
+    *numberOfReturnedIvars = count;
+
+  return returnValue;
+}
+
+BOOL
+class_addIvar (Class class_, const char * ivar_name, size_t size,
+	       unsigned char log_2_of_alignment, const char *type)
+{
+  struct objc_ivar_list *ivars;
+
+  if (class_ == Nil
+      || (! CLS_IS_IN_CONSTRUCTION (class_))  
+      || ivar_name == NULL  
+      || (strcmp (ivar_name, "") == 0)
+      || size == 0
+      || type == NULL)
+    return NO;
+
+  /* Check if the class has an instance variable with that name
+     already.  */
+  ivars = class_->ivars;
+
+  if (ivars != NULL)
+    {
+      int i;
+      
+      for (i = 0; i < ivars->ivar_count; i++)
+	{
+	  struct objc_ivar *ivar = &(ivars->ivar_list[i]);
+	  
+	  if (strcmp (ivar->ivar_name, ivar_name) == 0)
+	    return NO;
+	}
+    }
+
+  /* Ok, no direct ivars.  Check superclasses.  */
+  if (class_getInstanceVariable (objc_getClass ((char *)(class_->super_class)),
+				 ivar_name))
+    return NO;
+
+  /* Good.  Create space for the new instance variable.  */
+  if (ivars)
+    {
+      int ivar_count = ivars->ivar_count + 1;
+      int new_size = sizeof (struct objc_ivar_list) 
+	+ (ivar_count - 1) * sizeof (struct objc_ivar);
+      
+      ivars = (struct objc_ivar_list*) objc_realloc (ivars, new_size);
+      ivars->ivar_count = ivar_count;
+      class_->ivars = ivars;
+    }
+  else
+    {
+      int new_size = sizeof (struct objc_ivar_list);
+      
+      ivars = (struct objc_ivar_list*) objc_malloc (new_size);
+      ivars->ivar_count = 1;
+      class_->ivars = ivars;
+    }
+    
+  /* Now ivars is set to a list of instance variables of the right
+     size. */
+  {
+    struct objc_ivar *ivar = &(ivars->ivar_list[ivars->ivar_count - 1]);
+    unsigned int alignment = 1 << log_2_of_alignment;
+    int misalignment;
+    
+    ivar->ivar_name = objc_malloc (strlen (ivar_name) + 1);
+    strcpy ((char *)ivar->ivar_name, ivar_name);
+
+    ivar->ivar_type = objc_malloc (strlen (type) + 1);
+    strcpy ((char *)ivar->ivar_type, type);
+
+    /* The new instance variable is placed at the end of the existing
+       instance_size, at the first byte that is aligned with
+       alignment.  */
+    misalignment = class_->instance_size % alignment;
+    
+    if (misalignment == 0)
+      ivar->ivar_offset = class_->instance_size;
+    else
+      ivar->ivar_offset = class_->instance_size - misalignment + alignment;
+    
+    class_->instance_size = ivar->ivar_offset + size;
+  }
+  
+  return YES;
+}
+
+
+const char *
+property_getName (struct objc_property * property __attribute__ ((__unused__)))
+{
+  if (property == NULL)
+    return NULL;
+
+  /* TODO: New ABI.  */
+  /* The current ABI does not have any information on properties.  */
+  return NULL;
+}
+
+const char *
+property_getAttributes (struct objc_property * property __attribute__ ((__unused__)))
+{
+  if (property == NULL)
+    return NULL;
+
+  /* TODO: New ABI.  */
+  /* The current ABI does not have any information on properties.  */
+  return NULL;
+}
+
+struct objc_property *
+class_getProperty (Class class_ __attribute__ ((__unused__)),
+		   const char *propertyName __attribute__ ((__unused__)))
+{
+  if (class_ == NULL  ||  propertyName == NULL)
+    return NULL;
+
+  /* TODO: New ABI.  */
+  /* The current ABI does not have any information on class properties.  */
+  return NULL;
+}
+
+struct objc_property ** 
+class_copyPropertyList (Class class_ __attribute__ ((__unused__)), 
+			unsigned int *numberOfReturnedProperties __attribute__ ((__unused__)))
+{
+  if (class_ == Nil)
+    {
+      if (numberOfReturnedProperties)
+	*numberOfReturnedProperties = 0;
+      return NULL;
+    }
+
+  /* TODO: New ABI.  */
+  /* The current ABI does not have any information on class properties.  */
+  if (numberOfReturnedProperties)
+    *numberOfReturnedProperties = 0;
+
+  return NULL;
+}
+
+const char *
+class_getIvarLayout (Class class_ __attribute__ ((__unused__)))
+{
+  return NULL;
+}
+
+const char *
+class_getWeakIvarLayout (Class class_ __attribute__ ((__unused__)))
+{
+  return NULL;
+}
+
+void
+class_setIvarLayout (Class class_ __attribute__ ((__unused__)),
+		     const char *layout __attribute__ ((__unused__)))
+{
+  return;
+}
+
+void
+class_setWeakIvarLayout (Class class_ __attribute__ ((__unused__)),
+			 const char *layout __attribute__ ((__unused__)))
+{
+  return;
+}
diff --git a/libobjc/libobjc.def b/libobjc/libobjc.def
new file mode 100644
index 000000000..e84d839ad
--- /dev/null
+++ b/libobjc/libobjc.def
@@ -0,0 +1,171 @@
+;  GNU Objective C Runtime DLL Export Definitions
+;  Copyright (C) 1997, 2001, 2003, 2005, 2009, 2010
+;  Free Software Foundation, Inc.
+;  Contributed by Scott Christley <scottc@net-community.com>
+;
+;  This file is part of GCC.
+;
+;  GCC is free software; you can redistribute it and/or modify it under the
+;  terms of the GNU General Public License as published by the Free Software
+;  Foundation; either version 3, or (at your option) any later version.
+;
+;  GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+;  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+;  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+;  details.
+;
+;  You should have received a copy of the GNU General Public License along with
+;  GCC; see the file COPYING3.  If not, see <http://www.gnu.org/licenses/>.
+
+; FIXME: This file needs to be updated or removed
+
+LIBRARY libobjc
+EXPORTS
+search_for_method_in_list
+objc_get_uninstalled_dtable
+objc_hash_is_key_in_hash
+hash_is_key_in_hash
+objc_verror
+_objc_load_callback
+objc_malloc
+objc_atomic_malloc
+objc_valloc
+objc_realloc
+objc_calloc
+objc_free
+__objc_init_thread_system
+objc_mutex_allocate
+objc_mutex_deallocate
+objc_mutex_lock
+objc_mutex_trylock
+objc_mutex_unlock
+_objc_unexpected_exception
+objc_thread_detach
+objc_thread_exit
+objc_thread_get_data
+objc_thread_get_priority
+objc_thread_id
+objc_thread_set_data
+objc_thread_set_priority
+objc_thread_yield
+objc_thread_add
+objc_thread_remove
+__objc_class_name_Object
+__objc_class_name_Protocol
+__objc_class_name_NXConstantString
+objc_error
+__objc_object_alloc
+__objc_object_copy
+__objc_object_dispose
+class_create_instance
+object_copy
+object_dispose
+__objc_init_selector_tables
+__objc_register_selectors_from_class
+__sel_register_typed_name
+sel_get_any_typed_uid
+sel_get_any_uid
+sel_get_name
+sel_get_type
+sel_get_typed_uid
+sel_get_uid
+sel_is_mapped
+sel_register_name
+sel_register_typed_name
+sel_types_match
+method_get_first_argument
+method_get_next_argument
+method_get_nth_argument
+method_get_number_of_arguments
+method_get_sizeof_arguments
+objc_aligned_size
+objc_alignof_type
+objc_get_type_qualifiers
+objc_promoted_size
+objc_sizeof_type
+objc_skip_argspec
+objc_skip_offset
+objc_skip_type_qualifiers
+objc_skip_typespec
+__objc_read_nbyte_uint
+__objc_read_nbyte_ulong
+__objc_write_class
+__objc_write_object
+__objc_write_selector
+objc_close_typed_stream
+objc_end_of_typed_stream
+objc_flush_typed_stream
+objc_get_stream_class_version
+objc_open_typed_stream
+objc_open_typed_stream_for_file
+objc_read_array
+objc_read_char
+objc_read_int
+objc_read_long
+objc_read_object
+objc_read_selector
+objc_read_short
+objc_read_string
+objc_read_type
+objc_read_types
+objc_read_unsigned_char
+objc_read_unsigned_int
+objc_read_unsigned_long
+objc_read_unsigned_short
+objc_write_array
+objc_write_char
+objc_write_int
+objc_write_long
+objc_write_object
+objc_write_object_reference
+objc_write_root_object
+objc_write_selector
+objc_write_short
+objc_write_string
+objc_write_string_atomic
+objc_write_type
+objc_write_types
+objc_write_unsigned_char
+objc_write_unsigned_int
+objc_write_unsigned_long
+objc_write_unsigned_short
+__objc_exec_class
+__objc_init_dispatch_tables
+__objc_install_premature_dtable
+__objc_print_dtable_stats
+__objc_update_dispatch_table_for_class
+class_add_method_list
+class_get_class_method
+class_get_instance_method
+get_imp
+nil_method
+objc_msg_lookup
+objc_msg_lookup_super
+objc_msg_sendv
+__objc_add_class_to_hash
+__objc_init_class_tables
+__objc_resolve_class_links
+class_pose_as
+objc_get_class
+objc_get_meta_class
+objc_lookup_class
+objc_next_class
+sarray_at_put
+sarray_at_put_safe
+sarray_free
+sarray_lazy_copy
+sarray_new
+sarray_realloc
+sarray_remove_garbage
+objc_hash_add
+hash_add
+objc_hash_delete
+hash_delete
+objc_hash_new
+hash_new
+objc_hash_next
+hash_next
+objc_hash_remove
+hash_remove
+objc_hash_value_for_key
+hash_value_for_key
diff --git a/libobjc/linking.m b/libobjc/linking.m
new file mode 100644
index 000000000..ba8e0649f
--- /dev/null
+++ b/libobjc/linking.m
@@ -0,0 +1,36 @@
+/* Force linking of classes required by Objective C runtime.
+   Copyright (C) 1997, 2009, 2010 Free Software Foundation, Inc.
+   Contributed by Ovidiu Predescu (ovidiu@net-community.com).
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "objc-private/common.h"
+#include <objc/Object.h>
+
+/* Generate references to Object class since it is needed by the
+   runtime system to run correctly.  */
+
+void __objc_linking (void)
+{
+  [Object name];
+}
+
diff --git a/libobjc/memory.c b/libobjc/memory.c
new file mode 100644
index 000000000..b0519fc87
--- /dev/null
+++ b/libobjc/memory.c
@@ -0,0 +1,170 @@
+/* GNU Objective C Runtime Memory allocation functions
+   Copyright (C) 1993, 1994, 1995, 1996, 1997, 2002, 2009, 2010
+   Free Software Foundation, Inc.
+   Contributed by Kresten Krab Thorup
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+/* This file includes the standard functions for memory allocation and
+   disposal.  Users should use these functions in their ObjC programs
+   so that they work properly with garbage collectors.  */
+
+/* TODO: Turn these into macros or inline functions.  */
+
+#include "objc-private/common.h"
+#include "objc-private/error.h"
+
+/* __USE_FIXED_PROTOTYPES__ used to be required to get prototypes for
+   malloc, free, etc. on some platforms.  It is unclear if we still
+   need it, but it can't hurt.  */
+#define __USE_FIXED_PROTOTYPES__
+#include <stdlib.h>
+
+#include "objc/runtime.h"
+
+#if OBJC_WITH_GC
+#include <gc.h>
+
+void *
+objc_malloc (size_t size)
+{
+  void *res = (void *)(GC_malloc (size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void *
+objc_atomic_malloc (size_t size)
+{
+  void *res = (void *)(GC_malloc_atomic (size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void *
+objc_realloc (void *mem, size_t size)
+{
+  void *res = (void *)(GC_realloc (mem, size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void *
+objc_calloc (size_t nelem, size_t size)
+{
+  /* Note that GC_malloc returns cleared memory (see documentation) so
+     there is no need to clear it.  */
+  void *res = (void *)(GC_malloc (nelem * size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void
+objc_free (void *mem __attribute__ ((__unused__)))
+{
+  return;
+}
+
+#else
+
+void *
+objc_malloc (size_t size)
+{
+  void *res = (void *)(malloc (size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void *
+objc_atomic_malloc (size_t size)
+{
+  void *res = (void *)(malloc (size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void *
+objc_realloc (void *mem, size_t size)
+{
+  void *res = (void *)(realloc (mem, size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void *
+objc_calloc (size_t nelem, size_t size)
+{
+  void *res = (void *)(calloc (nelem, size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void
+objc_free (void *mem)
+{
+  free (mem);
+}
+
+#endif	/* !OBJC_WITH_GC */
+
+/* The rest of the file contains deprecated code.  */
+
+#if OBJC_WITH_GC
+
+void *
+objc_valloc (size_t size)
+{
+  void *res = (void *)(GC_malloc (size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+#else
+
+void *
+objc_valloc (size_t size)
+{
+  void *res = (void *)(malloc (size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+#endif	/* !OBJC_WITH_GC */
+
+/* Hook functions for memory allocation and disposal.  Deprecated and
+   currently unused.  */
+void *(*_objc_malloc) (size_t) = malloc;
+void *(*_objc_atomic_malloc) (size_t) = malloc;
+void *(*_objc_valloc) (size_t) = malloc;
+void *(*_objc_realloc) (void *, size_t) = realloc;
+void *(*_objc_calloc) (size_t, size_t) = calloc;
+void (*_objc_free) (void *) = free;
diff --git a/libobjc/methods.c b/libobjc/methods.c
new file mode 100644
index 000000000..b4faee533
--- /dev/null
+++ b/libobjc/methods.c
@@ -0,0 +1,177 @@
+/* GNU Objective C Runtime method related functions.
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Nicola Pero
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "objc-private/common.h"
+#include "objc/runtime.h"
+#include "objc-private/module-abi-8.h" /* For runtime structures.   */
+#include "objc/thr.h"
+#include "objc-private/runtime.h"      /* For __objc_runtime_mutex.  */
+#include <stdlib.h>                    /* For malloc.  */
+
+SEL
+method_getName (struct objc_method * method)
+{
+  if (method == NULL)
+    return NULL;
+
+  return method->method_name;
+}
+
+const char *
+method_getTypeEncoding (struct objc_method * method)
+{
+  if (method == NULL)
+    return NULL;
+
+  return method->method_types;
+}
+
+IMP
+method_getImplementation (struct objc_method * method)
+{
+  if (method == NULL)
+    return NULL;
+
+  return method->method_imp;
+}
+
+struct objc_method_description *
+method_getDescription (struct objc_method * method)
+{
+  /* Note that the following returns NULL if method is NULL, which is
+     fine.  */
+  return (struct objc_method_description *)method;
+}
+
+struct objc_method **
+class_copyMethodList (Class class_, unsigned int *numberOfReturnedMethods)
+{
+  unsigned int count = 0;
+  struct objc_method **returnValue = NULL;
+  struct objc_method_list* method_list;
+
+  if (class_ == Nil)
+    {
+      if (numberOfReturnedMethods)
+	*numberOfReturnedMethods = 0;
+      return NULL;
+    }
+
+  /* Lock the runtime mutex because the class methods may be
+     concurrently modified.  */
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  /* Count how many methods we have.  */
+  method_list = class_->methods;
+
+  while (method_list)
+    {
+      count = count + method_list->method_count;
+      method_list = method_list->method_next;
+    }
+
+  if (count != 0)
+    {
+      unsigned int i = 0;
+      
+      /* Allocate enough memory to hold them.  */
+      returnValue 
+	= (struct objc_method **)(malloc (sizeof (struct objc_method *) 
+					  * (count + 1)));
+      
+      /* Copy the methods.  */
+      method_list = class_->methods;
+      
+      while (method_list)
+	{
+	  int j;
+	  for (j = 0; j < method_list->method_count; j++)
+	    {
+	      returnValue[i] = &(method_list->method_list[j]);
+	      i++;
+	    }
+	  method_list = method_list->method_next;
+	}
+      
+      returnValue[i] = NULL;
+    }
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+
+  if (numberOfReturnedMethods)
+    *numberOfReturnedMethods = count;
+
+  return returnValue;
+}
+
+IMP
+method_setImplementation (struct objc_method * method, IMP implementation)
+{
+  IMP old_implementation;
+
+  if (method == NULL  ||  implementation == NULL)
+    return NULL;
+
+  /* We lock the runtime mutex so that concurrent calls to change the
+     same method won't conflict with each other.  */
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  old_implementation = method->method_imp;
+  method->method_imp = implementation;
+
+  /* That was easy :-).  But now we need to find all classes that use
+     this method, and update the IMP in the dispatch tables.  */
+  __objc_update_classes_with_methods (method, NULL);
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+
+  return old_implementation;
+}
+
+void
+method_exchangeImplementations (struct objc_method * method_a, struct objc_method * method_b)
+{
+  IMP old_implementation_a;
+  IMP old_implementation_b;
+
+  if (method_a == NULL  ||  method_b == NULL)
+    return;
+
+  /* We lock the runtime mutex so that concurrent calls to exchange
+     similar methods won't conflict with each other.  Each of them
+     should be atomic.  */
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  old_implementation_a = method_a->method_imp;
+  old_implementation_b = method_b->method_imp;
+
+  method_a->method_imp = old_implementation_b;
+  method_b->method_imp = old_implementation_a;
+
+  /* That was easy :-).  But now we need to find all classes that use
+     these methods, and update the IMP in the dispatch tables.  */
+  __objc_update_classes_with_methods (method_a, method_b);
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+}
diff --git a/libobjc/nil_method.c b/libobjc/nil_method.c
new file mode 100644
index 000000000..15e3d528c
--- /dev/null
+++ b/libobjc/nil_method.c
@@ -0,0 +1,56 @@
+/* GNU Objective C Runtime nil receiver function
+   Copyright (C) 1993, 1995, 1996, 2002, 2009, 2010
+   Free Software Foundation, Inc.
+   Contributed by Kresten Krab Thorup
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+
+/* This is the nil method, the function that is called when the receiver
+   of a method is nil */
+
+#include "objc-private/common.h"
+#include "objc/objc.h"
+
+/* When the receiver of a method invocation is nil, the runtime
+   returns nil_method() as the method implementation.  This function
+   will be casted to whatever function was supposed to be executed to
+   execute that method (that function will take an id, followed by a
+   SEL, followed by who knows what arguments, depends on the method),
+   and executed.
+   
+   For this reason, nil_method() should be a function which can be
+   called in place of any function taking an 'id' argument followed by
+   a 'SEL' argument, followed by zero, or one, or any number of
+   arguments (both a fixed number, or a variable number !).
+   
+   There is no "proper" implementation of such a nil_method function
+   in C, however in all existing implementations it does not matter
+   when extra arguments are present, so we can simply create a function
+   taking a receiver and a selector, and all other arguments will be
+   ignored. :-)
+*/
+
+id
+nil_method (id receiver, SEL op __attribute__ ((__unused__)))
+{
+  return receiver;
+}
diff --git a/libobjc/objc-foreach.c b/libobjc/objc-foreach.c
new file mode 100644
index 000000000..911206118
--- /dev/null
+++ b/libobjc/objc-foreach.c
@@ -0,0 +1,51 @@
+/* GNU Objective C Runtime 'fast enumeration' implementation
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Nicola Pero <nicola.pero@meta-innovation.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+/* This file implements objc_enumeration_mutation() and
+   objc_set_enumeration_mutation_handler(), the two functions required
+   to handle mutations during a fast enumeration.  */
+#include "objc-private/common.h"
+#include "objc-private/error.h"     /* For _objc_abort() */
+#include "objc/runtime.h"           /* For objc_enumerationMutation() and objc_set_enumeration_mutation_handler() */
+
+/* The enumeration mutation handler currently in use.  */
+static void (*__objc_enumeration_mutation_handler)(id) = NULL;
+
+void
+objc_setEnumerationMutationHandler (void (*handler)(id))
+{
+  __objc_enumeration_mutation_handler = handler;
+}
+
+void
+objc_enumerationMutation (id collection)
+{
+  if (__objc_enumeration_mutation_handler != NULL)
+    (*__objc_enumeration_mutation_handler) (collection);
+
+  /* We always abort if we get here; there is no point in going on as
+     the next iteration in the fast enumeration would probably go
+     deeply wrong.  */
+  _objc_abort ("Collection %p mutated during fast enumeration", collection);
+}  
diff --git a/libobjc/objc-private/README b/libobjc/objc-private/README
new file mode 100644
index 000000000..cce1d0416
--- /dev/null
+++ b/libobjc/objc-private/README
@@ -0,0 +1,4 @@
+This directory contains headers that are private to the runtime and
+that are only included while the runtime is being compiled.  They are
+not installed, so developers using the library can't actually even see
+them.
diff --git a/libobjc/objc-private/accessors.h b/libobjc/objc-private/accessors.h
new file mode 100644
index 000000000..570ae7a85
--- /dev/null
+++ b/libobjc/objc-private/accessors.h
@@ -0,0 +1,32 @@
+/* GNU Objective C Runtime accessors - Private Declarations
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Nicola Pero <nicola.pero@meta-innovation.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __objc_private_accessors_INCLUDE_GNU
+#define __objc_private_accessors_INCLUDE_GNU
+
+/* This function needs to be called at startup by init.c.  */
+void
+__objc_accessors_init (void);
+
+#endif /* not __objc_private_accessors_INCLUDE_GNU */
diff --git a/libobjc/objc-private/common.h b/libobjc/objc-private/common.h
new file mode 100644
index 000000000..4f4ec5cd0
--- /dev/null
+++ b/libobjc/objc-private/common.h
@@ -0,0 +1,49 @@
+/* GNU Objective C Runtime Common Private Definitions
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Nicola Pero
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __objc_private_common_INCLUDE_GNU
+#define __objc_private_common_INCLUDE_GNU
+
+/* This file contains definitions that should be included by all .c
+   and .m files in libobjc.  */
+
+/* This variable allows the public headers to determine when they are
+   being included by a file inside libobjc itself, or when they are
+   being included by an external file.  */
+#define GNU_LIBOBJC_COMPILING_LIBOBJC_ITSELF 1
+
+/* When debugging libobjc, add
+
+   #define DEBUG 1
+
+   at the very beginning of a file in libobjc (before including this file) to turn
+   on DEBUG_PRINTF().  */
+#ifdef DEBUG
+#include <stdio.h>
+#define DEBUG_PRINTF(format, args...) printf (format, ## args)
+#else
+#define DEBUG_PRINTF(format, args...)
+#endif 
+
+#endif /* __objc_private_common_INCLUDE_GNU */
diff --git a/libobjc/objc-private/error.h b/libobjc/objc-private/error.h
new file mode 100644
index 000000000..e8673f722
--- /dev/null
+++ b/libobjc/objc-private/error.h
@@ -0,0 +1,38 @@
+/* GNU Objective C Runtime Common Private Definitions
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Nicola Pero
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __objc_private_error_INCLUDE_GNU
+#define __objc_private_error_INCLUDE_GNU
+
+/* Prints an unrecoverable error to stderr, then aborts the program.
+   This should only be used for errors that really are unrecorevable:
+   failure to allocate memory, and failure to load an Objective-C
+   module.  All other usages of this function should be converted into
+   some milder type of error (unless aborting is explicitly required
+   by the documentation/API).
+*/
+void
+_objc_abort (const char *fmt, ...) __attribute__ ((noreturn));
+
+#endif /* __objc_private_error_INCLUDE_GNU */
diff --git a/libobjc/objc-private/hash.h b/libobjc/objc-private/hash.h
new file mode 100644
index 000000000..c330d618e
--- /dev/null
+++ b/libobjc/objc-private/hash.h
@@ -0,0 +1,201 @@
+/* Hash tables for Objective C method dispatch.
+   Copyright (C) 1993, 1995, 1996, 2004, 2009 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+/* You need to include this file after including objc.h  */
+
+#ifndef __hash_INCLUDE_GNU
+#define __hash_INCLUDE_GNU
+
+#include <stddef.h>
+#include <string.h>
+
+/*
+ * This data structure is used to hold items
+ *  stored in a hash table.  Each node holds 
+ *  a key/value pair.
+ *
+ * Items in the cache are really of type void *.
+ */
+typedef struct cache_node
+{
+  struct cache_node *next;	/* Pointer to next entry on the list.
+				   NULL indicates end of list. */
+  const void *key;		/* Key used to locate the value.  Used
+				   to locate value when more than one
+				   key computes the same hash
+				   value. */
+  void *value;			/* Value stored for the key. */
+} *node_ptr;
+
+
+/*
+ * This data type is the function that computes a hash code given a key.
+ * Therefore, the key can be a pointer to anything and the function specific
+ * to the key type. 
+ *
+ * Unfortunately there is a mutual data structure reference problem with this
+ * typedef.  Therefore, to remove compiler warnings the functions passed to
+ * objc_hash_new will have to be casted to this type. 
+ */
+typedef unsigned int (*hash_func_type) (void *, const void *);
+
+/*
+ * This data type is the function that compares two hash keys and returns an
+ * integer greater than, equal to, or less than 0, according as the first
+ * parameter is lexicographically greater than, equal to, or less than the
+ * second. 
+ */
+
+typedef int (*compare_func_type) (const void *, const void *);
+
+
+/*
+ * This data structure is the cache.
+ *
+ * It must be passed to all of the hashing routines
+ *   (except for new).
+ */
+typedef struct cache
+{
+  /* Variables used to implement the hash itself.  */
+  node_ptr *node_table; /* Pointer to an array of hash nodes.  */
+  /* Variables used to track the size of the hash table so to determine
+    when to resize it.  */
+  unsigned int size; /* Number of buckets allocated for the hash table
+			(number of array entries allocated for
+			"node_table").  Must be a power of two.  */
+  unsigned int used; /* Current number of entries in the hash table.  */
+  unsigned int mask; /* Precomputed mask.  */
+
+  /* Variables used to implement indexing through the hash table.  */
+
+  unsigned int last_bucket; /* Tracks which entry in the array where
+			       the last value was returned.  */
+  /* Function used to compute a hash code given a key. 
+     This function is specified when the hash table is created.  */
+  hash_func_type    hash_func;
+  /* Function used to compare two hash keys to see if they are equal.  */
+  compare_func_type compare_func;
+} *cache_ptr;
+
+
+/* Allocate and initialize a hash table.  */ 
+
+cache_ptr objc_hash_new (unsigned int size,
+			 hash_func_type hash_func,
+			 compare_func_type compare_func);
+                       
+/* Deallocate all of the hash nodes and the cache itself.  */
+
+void objc_hash_delete (cache_ptr cache);
+
+/* Add the key/value pair to the hash table.  If the
+   hash table reaches a level of fullness then it will be resized. 
+                                                   
+   assert if the key is already in the hash.  */
+
+void objc_hash_add (cache_ptr *cachep, const void *key, void *value);
+     
+/* Remove the key/value pair from the hash table.  
+   assert if the key isn't in the table.  */
+
+void objc_hash_remove (cache_ptr cache, const void *key);
+
+/* Used to index through the hash table.  Start with NULL
+   to get the first entry.
+                                                  
+   Successive calls pass the value returned previously.
+   ** Don't modify the hash during this operation *** 
+                                                  
+   Cache nodes are returned such that key or value can
+   be extracted.  */
+
+node_ptr objc_hash_next (cache_ptr cache, node_ptr node);
+
+/* Used to return a value from a hash table using a given key.  */
+
+void *objc_hash_value_for_key (cache_ptr cache, const void *key);
+
+/* Used to determine if the given key exists in the hash table */
+
+BOOL objc_hash_is_key_in_hash (cache_ptr cache, const void *key);
+
+/************************************************
+
+        Useful hashing functions.  
+        
+        Declared inline for your pleasure.
+        
+************************************************/
+
+/* Calculate a hash code by performing some 
+   manipulation of the key pointer.  (Use the lowest bits
+   except for those likely to be 0 due to alignment.)  */
+
+static inline unsigned int
+objc_hash_ptr (cache_ptr cache, const void *key)
+{
+  return ((size_t)key / sizeof (void *)) & cache->mask;
+}
+
+
+/* Calculate a hash code by iterating over a NULL 
+   terminate string.  */
+static inline unsigned int 
+objc_hash_string (cache_ptr cache, const void *key)
+{
+  unsigned int ret = 0;
+  unsigned int ctr = 0;
+  const char *ckey = (const char *) key;
+        
+  while (*ckey) {
+    ret ^= *ckey++ << ctr;
+    ctr = (ctr + 1) % sizeof (void *);
+  }
+
+  return ret & cache->mask;
+}
+
+
+/* Compare two pointers for equality.  */
+static inline int 
+objc_compare_ptrs (const void *k1, const void *k2)
+{
+  return (k1 == k2);
+}
+
+
+/* Compare two strings.  */
+static inline int 
+objc_compare_strings (const void *k1, const void *k2)
+{
+  if (k1 == k2)
+    return 1;
+  else if (k1 == 0 || k2 == 0)
+    return 0;
+  else
+    return ! strcmp ((const char *) k1, (const char *) k2);
+}
+
+#endif /* not __hash_INCLUDE_GNU */
diff --git a/libobjc/objc-private/module-abi-8.h b/libobjc/objc-private/module-abi-8.h
new file mode 100644
index 000000000..0c9574bb4
--- /dev/null
+++ b/libobjc/objc-private/module-abi-8.h
@@ -0,0 +1,315 @@
+/* Definitions of Module Structures used by ABI version 8
+   Copyright (C) 1993, 1995, 1996, 1997, 2001, 2002, 2003, 2004, 2005,
+   2007, 2009, 2010 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __objc_private_module_abi_8_INCLUDE_GNU
+#define __objc_private_module_abi_8_INCLUDE_GNU
+
+/* For every class which happens to have statically allocated instances in
+   this module, one OBJC_STATIC_INSTANCES is allocated by the compiler.
+   INSTANCES is NULL terminated and points to all statically allocated
+   instances of this class.  */
+struct objc_static_instances
+{
+  char *class_name;
+#ifdef __cplusplus
+  id instances[1];
+#else
+  id instances[0];
+#endif
+};
+
+/* Whereas a Module (defined further down) is the root (typically) of a file,
+   a Symtab is the root of the class and category definitions within the
+   module.  
+   
+   A Symtab contains a variable length array of pointers to classes and
+   categories  defined in the module.   */
+struct objc_symtab
+{
+  unsigned long sel_ref_cnt;  /* Unused (always set to 0). */
+  struct objc_selector *refs; /* The table of selectors referenced in
+                                 this module.  This is terminated by a
+                                 selector with NULL sel_id and NULL
+                                 sel_types.  Note that we use the type
+                                 'struct objc_selector *' and not
+                                 'SEL' (which is 'const struct
+                                 objc_selector *') because the sel_id
+                                 of these selectors is patched up by
+                                 the runtime when the module is
+                                 loaded.  */
+  unsigned short cls_def_cnt; /* Number of classes compiled (defined)
+                                 in the module. */
+  unsigned short cat_def_cnt; /* Number of categories compiled
+                                 (defined) in the module. */
+  void      *defs[1];         /* Variable array of pointers.
+				 cls_def_cnt of type Class followed by
+				 cat_def_cnt of type Category_t,
+				 followed by a NULL terminated array
+				 of objc_static_instances. */
+};
+
+/* The compiler generates one of these structures for each module that
+   composes the executable (eg main.m).
+ 
+   This data structure is the root of the definition tree for the
+   module.
+ 
+   A collect program runs between ld stages and creates a ObjC ctor
+   array.  That array holds a pointer to each module structure of the
+   executable.  */
+struct objc_module
+{
+  unsigned long version;      /* Version of the Module data
+				 structure.  */
+  unsigned long size;         /* sizeof(Module) according to the
+				 compiler - only used to sanity check
+				 that it matches sizeof(Module)
+				 according to the runtime.  */
+  const char* name;           /* Name of the file used to compile the
+				 module - not set by modern compilers
+				 for security reasons.  */
+  struct objc_symtab *symtab; /* Pointer to the Symtab of the module.
+				 The Symtab holds an array of pointers
+				 to the classes and categories defined
+				 in the module. */
+};
+
+/* The compiler generates one of these structures for a class that has
+   instance variables defined in its specification.  */
+struct objc_ivar
+{
+  const char* ivar_name;  /* Name of the instance variable as entered
+			     in the class definition. */
+  const char* ivar_type;  /* Description of the Ivar's type.  Useful
+			     for debuggers. */
+  int        ivar_offset; /* Byte offset from the base address of the
+			     instance structure to the variable. */
+};
+
+struct objc_ivar_list
+{
+  int   ivar_count;              /* Number of structures (Ivar)
+				    contained in the list.  One
+				    structure per instance variable
+				    defined in the class. */
+  struct objc_ivar ivar_list[1]; /* Variable length structure. */
+};
+
+/* The compiler generates one (or more) of these structures for a
+   class that has methods defined in its specification.
+ 
+   The implementation of a class can be broken into separate pieces in
+   a file and categories can break them across modules. To handle this
+   problem is a singly linked list of methods.  */
+struct objc_method
+{
+  SEL         method_name;  /* This variable is the method's name.
+			       The compiler puts a char* here, and
+			       it's replaced by a real SEL at runtime
+			       when the method is registered.  */
+  const char* method_types; /* Description of the method's parameter
+			       list.  Used when registering the
+			       selector with the runtime.  When that
+			       happens, method_name will contain the
+			       method's parameter list.  */
+  IMP         method_imp;   /* Address of the method in the
+			       executable. */
+};
+
+struct objc_method_list
+{
+  struct objc_method_list*  method_next; /* This variable is used to
+					    link a method list to
+					    another.  It is a singly
+					    linked list. */
+  int            method_count;            /* Number of methods defined
+					     in this structure. */
+  struct objc_method method_list[1];      /* Variable length
+					     structure. */
+};
+
+/* Currently defined in Protocol.m (that definition should go away
+   once we include this file).  Note that a 'struct
+   objc_method_description' as embedded inside a Protocol uses the
+   same trick as a 'struct objc_method': the method_name is a 'char *'
+   according to the compiler, who puts the method name as a string in
+   there.  At runtime, the selectors need to be registered, and the
+   method_name then becomes a SEL.  */
+struct objc_method_description_list
+{
+  int count;
+  struct objc_method_description list[1];
+};
+
+/* Currently defined by objc/objc.h.  */
+/*
+struct objc_protocol {
+  struct objc_class* class_pointer;
+  char *protocol_name;
+  struct objc_protocol_list *protocol_list;
+  struct objc_method_description_list *instance_methods, *class_methods; 
+};
+*/
+
+struct objc_protocol_list
+{
+  struct objc_protocol_list *next;
+  size_t count;
+  Protocol *list[1];
+};
+
+/*
+  The compiler generates one of these structures for each class.  
+
+  This structure is the definition for classes.
+
+  This structure is generated by the compiler in the executable and
+  used by the run-time during normal messaging operations.  Therefore
+  some members change type. The compiler generates "char* const" and
+  places a string in the following member variables: super_class.
+*/
+#ifndef __objc_STRUCT_OBJC_CLASS_defined
+struct objc_class {
+  struct objc_class*  class_pointer;    /* Pointer to the class's meta
+					   class. */
+  struct objc_class*  super_class;      /* Pointer to the super
+					   class. NULL for class
+					   Object. */
+  const char*         name;             /* Name of the class. */
+  long                version;          /* Unknown. */
+  unsigned long       info;             /* Bit mask.  See class masks
+					   defined below. */
+  long                instance_size;    /* Size in bytes of the class.
+					   The sum of the class
+					   definition and all super
+					   class definitions. */
+#ifdef _WIN64
+  /* We pad the structure manually to prevent warning when -Wpadded is
+     used.  The compiler automatically pads the structures that it
+     generates, so this manually padded structure still matches the
+     one generated by the compiler, but if we don't pad manually,
+     -Wpadded detects that padding is being added and generates
+     annoying warnings.  This hack is necessary as on LLP64 targets
+     sizeof (long) isn't equal to sizeof (void *).  */
+  long pad;
+#endif
+  struct objc_ivar_list* ivars;         /* Pointer to a structure that
+					   describes the instance
+					   variables in the class
+					   definition.  NULL indicates
+					   no instance variables.
+					   Does not include super
+					   class variables. */
+  struct objc_method_list*  methods;    /* Linked list of instance
+					   methods defined for the
+					   class. */
+  struct sarray *    dtable;            /* Pointer to instance method
+					   dispatch table. */  
+  struct objc_class* subclass_list;     /* Subclasses */
+  struct objc_class* sibling_class;
+
+  struct objc_protocol_list *protocols; /* Protocols conformed to */
+  void* gc_object_type;
+};
+#endif /* __objc_STRUCT_OBJC_CLASS_defined */
+
+/* This is used to assure consistent access to the info field of 
+   classes.  */
+#ifndef HOST_BITS_PER_LONG
+# define HOST_BITS_PER_LONG  (sizeof(long)*8)
+#endif 
+
+#define __CLS_INFO(cls) ((cls)->info)
+#define __CLS_ISINFO(cls, mask) ((__CLS_INFO(cls)&mask)==mask)
+#define __CLS_SETINFO(cls, mask) (__CLS_INFO(cls) |= mask)
+#define __CLS_SETNOTINFO(cls, mask) (__CLS_INFO(cls) &= ~mask)
+
+/* The structure is of type MetaClass */
+#define _CLS_META 0x2L
+#define CLS_ISMETA(cls) ((cls)&&__CLS_ISINFO(cls, _CLS_META))
+
+/* The structure is of type Class */
+#define _CLS_CLASS 0x1L
+#define CLS_ISCLASS(cls) ((cls)&&__CLS_ISINFO(cls, _CLS_CLASS))
+
+/* The class is initialized within the runtime.  This means that it
+   has had correct super and sublinks assigned.  */
+#define _CLS_RESOLV 0x8L
+#define CLS_ISRESOLV(cls) __CLS_ISINFO(cls, _CLS_RESOLV)
+#define CLS_SETRESOLV(cls) __CLS_SETINFO(cls, _CLS_RESOLV)
+
+/* The class has been send a +initialize message or a such is not 
+   defined for this class.  */
+#define _CLS_INITIALIZED 0x04L
+#define CLS_ISINITIALIZED(cls) __CLS_ISINFO(cls, _CLS_INITIALIZED)
+#define CLS_SETINITIALIZED(cls) __CLS_SETINFO(cls, _CLS_INITIALIZED)
+
+/* The class is being constructed; it has been allocated using
+   objc_allocateClassPair(), but has not been registered yet by using
+   objc_registerClassPair().  This means it is possible to freely add
+   instance variables to the class, but it can't be used for anything
+   yet.  */
+#define _CLS_IN_CONSTRUCTION 0x10L
+#define CLS_IS_IN_CONSTRUCTION(cls) __CLS_ISINFO(cls, _CLS_IN_CONSTRUCTION)
+#define CLS_SET_IN_CONSTRUCTION(cls) __CLS_SETINFO(cls, _CLS_IN_CONSTRUCTION)
+#define CLS_SET_NOT_IN_CONSTRUCTION(cls) __CLS_SETNOTINFO(cls, _CLS_IN_CONSTRUCTION)
+
+/* The class number of this class.  This must be the same for both the
+   class and its meta class object.  */
+#define CLS_GETNUMBER(cls) (__CLS_INFO(cls) >> (HOST_BITS_PER_LONG/2))
+#define CLS_SETNUMBER(cls, num) \
+  ({ (cls)->info <<= (HOST_BITS_PER_LONG/2); \
+     (cls)->info >>= (HOST_BITS_PER_LONG/2); \
+     __CLS_SETINFO(cls, (((unsigned long)num) << (HOST_BITS_PER_LONG/2))); })
+
+
+/* The compiler generates one of these structures for each category.
+   A class may have many categories and contain both instance and
+   factory methods.  */
+struct objc_category
+{
+  const char*   category_name;                /* Name of the category.
+						 Name contained in the
+						 () of the category
+						 definition.  */
+  const char*   class_name;                   /* Name of the class to
+						 which the category
+						 belongs.  */
+  struct objc_method_list  *instance_methods; /* Linked list of
+						 instance methods
+						 defined in the
+						 category. NULL
+						 indicates no instance
+						 methods defined.  */
+  struct objc_method_list *class_methods;     /* Linked list of
+						 factory methods
+						 defined in the
+						 category.  NULL
+						 indicates no class
+						 methods defined.  */
+  struct objc_protocol_list *protocols;	      /* List of Protocols
+					         conformed to.  */
+};
+
+#endif /* __objc_private_module_abi_8_INCLUDE_GNU */
diff --git a/libobjc/objc-private/objc-list.h b/libobjc/objc-private/objc-list.h
new file mode 100644
index 000000000..989b9c9d4
--- /dev/null
+++ b/libobjc/objc-private/objc-list.h
@@ -0,0 +1,94 @@
+/* Generic single linked list to keep various information 
+   Copyright (C) 1993, 1994, 1996, 2009, 2010 Free Software Foundation, Inc.
+   Contributed by Kresten Krab Thorup.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __GNU_OBJC_LIST_H
+#define __GNU_OBJC_LIST_H
+
+struct objc_list
+{
+  void *head;
+  struct objc_list *tail;
+};
+
+/* Return a cons cell produced from (head . tail).  */
+static inline struct objc_list* 
+list_cons (void* head, struct objc_list* tail)
+{
+  struct objc_list* cell;
+
+  cell = (struct objc_list*)objc_malloc (sizeof (struct objc_list));
+  cell->head = head;
+  cell->tail = tail;
+  return cell;
+}
+
+/* Remove the element at the head by replacing it by its
+   successor.  */
+static inline void
+list_remove_head (struct objc_list** list)
+{
+  if ((*list)->tail)
+    {
+      /* Fetch next.  */
+      struct objc_list* tail = (*list)->tail;
+
+      /* Copy next to list head.  */
+      *(*list) = *tail;
+
+      /* Free next.  */
+      objc_free (tail);
+    }
+  else
+    {
+      /* Inly one element in list.  */
+      objc_free (*list);
+      (*list) = 0;
+    }
+}
+
+
+/* Map FUNCTION over all elements in LIST.  */
+static inline void
+list_mapcar (struct objc_list* list, void(*function)(void*))
+{
+  while (list)
+    {
+      (*function) (list->head);
+      list = list->tail;
+    }
+}
+
+/* Free list (backwards recursive).  */
+static inline void
+list_free (struct objc_list* list)
+{
+  if(list)
+    {
+      list_free (list->tail);
+      objc_free (list);
+    }
+}
+
+#endif /* not __GNU_OBJC_LIST_H */
diff --git a/libobjc/objc-private/objc-sync.h b/libobjc/objc-private/objc-sync.h
new file mode 100644
index 000000000..95eb28b30
--- /dev/null
+++ b/libobjc/objc-private/objc-sync.h
@@ -0,0 +1,33 @@
+/* GNU Objective C Runtime @synchronized implementation - Private functions
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Nicola Pero <nicola.pero@meta-innovation.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __objc_private_objc_sync_INCLUDE_GNU
+#define __objc_private_objc_sync_INCLUDE_GNU
+
+/* This function needs to be called at startup before @synchronized()
+   can be used.  */
+void
+__objc_sync_init (void);
+
+#endif /* not __objc_private_objc_sync_INCLUDE_GNU */
diff --git a/libobjc/objc-private/protocols.h b/libobjc/objc-private/protocols.h
new file mode 100644
index 000000000..87f8fc848
--- /dev/null
+++ b/libobjc/objc-private/protocols.h
@@ -0,0 +1,38 @@
+/* GNU Objective C Runtime protocols - Private functions
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Nicola Pero <nicola.pero@meta-innovation.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __objc_private_protocols_INCLUDE_GNU
+#define __objc_private_protocols_INCLUDE_GNU
+
+/* This function needs to be called at startup by init.c.  */
+void
+__objc_protocols_init (void);
+
+/* This function adds a protocol to the internal hashtable of
+   protocols by name, which allows objc_getProtocol(name) to be
+   implemented efficiently.  */
+void
+__objc_protocols_add_protocol (const char *name, Protocol *object);
+
+#endif /* not __objc_private_protocols_INCLUDE_GNU */
diff --git a/libobjc/objc-private/runtime.h b/libobjc/objc-private/runtime.h
new file mode 100644
index 000000000..5406294f2
--- /dev/null
+++ b/libobjc/objc-private/runtime.h
@@ -0,0 +1,79 @@
+/* GNU Objective C Runtime internal declarations
+   Copyright (C) 1993, 1995, 1996, 1997, 2002, 2004, 2009 Free Software Foundation, Inc.
+   Contributed by Kresten Krab Thorup
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+/* You need to include this file after including a number of standard ObjC files.
+
+The original list was:
+
+#include "objc/objc.h"
+#include "objc/objc-api.h"
+#include "objc/thr.h"
+#include "objc/hash.h"
+#include "objc/objc-list.h"
+
+but can almost certainly be shrinked down.
+
+Note that you can use this file both with objc/objc-api.h and with
+objc/runtime.h.  */
+
+#ifndef __objc_private_runtime_INCLUDE_GNU
+#define __objc_private_runtime_INCLUDE_GNU
+
+#include <stdarg.h>		/* for varargs and va_list's */
+
+#include <stdio.h>
+#include <ctype.h>
+
+#include <stddef.h>		/* so noone else will get system versions */
+#include <assert.h>
+
+extern BOOL __objc_add_class_to_hash (Class);   /* (objc-class.c) */
+extern void __objc_init_class_tables (void);    /* (objc-class.c) */
+extern void __objc_init_dispatch_tables (void); /* (objc-dispatch.c) */
+extern void __objc_install_premature_dtable (Class); /* (objc-dispatch.c) */
+extern void __objc_resolve_class_links (void);  /* (objc-class.c) */
+extern void __objc_update_dispatch_table_for_class (Class);/* (objc-msg.c) */
+
+extern int  __objc_init_thread_system (void);    /* thread.c */
+extern int  __objc_fini_thread_system (void);    /* thread.c */
+extern BOOL __objc_init_class (Class class);  /* init.c */
+extern void class_add_method_list (Class, struct objc_method_list *);
+
+/* Registering instance methods as class methods for root classes */
+extern void __objc_register_instance_methods_to_class (Class);
+extern struct objc_method * search_for_method_in_list (struct objc_method_list * list, SEL op);
+
+extern void
+__objc_update_classes_with_methods (struct objc_method *method_a, struct objc_method *method_b); /* class.c */
+
+/* Mutex locking __objc_selector_max_index and its arrays. */
+extern objc_mutex_t __objc_runtime_mutex;
+
+/* Number of threads which are alive. */
+extern int __objc_runtime_threads_alive;
+
+BOOL __objc_responds_to (id object, SEL sel); /* for internal use only! */
+extern void __objc_generate_gc_type_description (Class);
+
+#endif /* not __objc_private_runtime_INCLUDE_GNU */
diff --git a/libobjc/objc-private/sarray.h b/libobjc/objc-private/sarray.h
new file mode 100644
index 000000000..12fad921f
--- /dev/null
+++ b/libobjc/objc-private/sarray.h
@@ -0,0 +1,243 @@
+/* Sparse Arrays for Objective C dispatch tables
+   Copyright (C) 1993, 1995, 1996, 2004, 2009, 2010 Free Software Foundation, Inc.
+   Contributed by Kresten Krab Thorup.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __sarray_INCLUDE_GNU
+#define __sarray_INCLUDE_GNU
+
+#define OBJC_SPARSE2		/* 2-level sparse array.  */
+/* #define OBJC_SPARSE3 */      /* 3-level sparse array.  */
+
+#ifdef OBJC_SPARSE2
+extern const char* __objc_sparse2_id;
+#endif
+
+#ifdef OBJC_SPARSE3
+extern const char* __objc_sparse3_id;
+#endif
+
+#include <stddef.h>
+
+extern int nbuckets;		/* for stats */
+extern int nindices;
+extern int narrays;
+extern int idxsize;
+
+/* An unsigned integer of same size as a pointer.  */
+#define SIZET_BITS (sizeof (size_t) * 8)
+
+#if defined (__sparc__) || defined (OBJC_SPARSE2)
+#define PRECOMPUTE_SELECTORS
+#endif
+
+#ifdef OBJC_SPARSE3
+
+/* Buckets are 8 words each.  */
+#define BUCKET_BITS 3
+#define BUCKET_SIZE (1 << BUCKET_BITS)
+#define BUCKET_MASK (BUCKET_SIZE - 1)
+
+/* Indices are 16 words each.  */
+#define INDEX_BITS 4
+#define INDEX_SIZE (1 << INDEX_BITS)
+#define INDEX_MASK (INDEX_SIZE - 1)
+
+#define INDEX_CAPACITY (BUCKET_SIZE * INDEX_SIZE)
+
+#else /* OBJC_SPARSE2 */
+
+/* Buckets are 32 words each.  */
+#define BUCKET_BITS 5
+#define BUCKET_SIZE (1 << BUCKET_BITS)
+#define BUCKET_MASK (BUCKET_SIZE - 1)
+
+#endif /* OBJC_SPARSE2 */
+
+typedef size_t sidx;
+
+#ifdef PRECOMPUTE_SELECTORS
+
+struct soffset
+{
+#ifdef OBJC_SPARSE3
+  unsigned int unused : SIZET_BITS / 4;
+  unsigned int eoffset : SIZET_BITS / 4;
+  unsigned int boffset : SIZET_BITS / 4;
+  unsigned int ioffset : SIZET_BITS / 4;
+#else /* OBJC_SPARSE2 */
+#ifdef __sparc__
+  unsigned long boffset : (SIZET_BITS - 2) - BUCKET_BITS;
+  unsigned int eoffset : BUCKET_BITS;
+  unsigned int unused  : 2;
+#else
+  unsigned int boffset : SIZET_BITS / 2;
+  unsigned int eoffset : SIZET_BITS / 2;
+#endif
+#endif /* OBJC_SPARSE2 */
+};
+
+union sofftype
+{
+  struct soffset off;
+  sidx idx;
+};
+
+#endif /* not PRECOMPUTE_SELECTORS */
+
+union sversion
+{
+  int	version;
+  void *next_free;
+};
+
+struct sbucket
+{
+  /* Elements stored in array.  */
+  void* elems[BUCKET_SIZE];
+
+  /* Used for copy-on-write.  */
+  union sversion version;
+};
+
+#ifdef OBJC_SPARSE3
+
+struct sindex
+{
+  struct sbucket* buckets[INDEX_SIZE];
+
+  /* Used for copy-on-write. */
+  union sversion version;		
+};
+
+#endif /* OBJC_SPARSE3 */
+
+struct sarray
+{
+#ifdef OBJC_SPARSE3
+  struct sindex** indices;
+  struct sindex* empty_index;
+#else /* OBJC_SPARSE2 */
+  struct sbucket** buckets;
+#endif  /* OBJC_SPARSE2 */
+  struct sbucket* empty_bucket;
+
+  /* Used for copy-on-write. */
+  union sversion version;
+
+  short ref_count;
+  struct sarray* is_copy_of;
+  size_t capacity;
+};
+
+struct sarray* sarray_new (int, void* default_element);
+void sarray_free (struct sarray*);
+struct sarray* sarray_lazy_copy (struct sarray*);
+void sarray_realloc (struct sarray*, int new_size);
+void sarray_at_put (struct sarray*, sidx indx, void* elem);
+void sarray_at_put_safe (struct sarray*, sidx indx, void* elem);
+
+struct sarray* sarray_hard_copy (struct sarray*); /* ... like the name ?  */
+void sarray_remove_garbage (void);
+
+
+#ifdef PRECOMPUTE_SELECTORS
+/* Transform soffset values to ints and vice versa.  */
+static inline unsigned int
+soffset_decode (sidx indx)
+{
+  union sofftype x;
+  x.idx = indx;
+#ifdef OBJC_SPARSE3
+  return x.off.eoffset
+    + (x.off.boffset * BUCKET_SIZE)
+    + (x.off.ioffset * INDEX_CAPACITY);
+#else /* OBJC_SPARSE2 */
+  return x.off.eoffset + (x.off.boffset * BUCKET_SIZE);
+#endif /* OBJC_SPARSE2 */
+}
+
+static inline sidx
+soffset_encode (size_t offset)
+{
+  union sofftype x;
+  x.off.eoffset = offset % BUCKET_SIZE;
+#ifdef OBJC_SPARSE3
+  x.off.boffset = (offset / BUCKET_SIZE) % INDEX_SIZE;
+  x.off.ioffset = offset / INDEX_CAPACITY;
+#else /* OBJC_SPARSE2 */
+  x.off.boffset = offset / BUCKET_SIZE;
+#endif
+  return (sidx)x.idx;
+}
+
+#else /* not PRECOMPUTE_SELECTORS */
+
+static inline size_t
+soffset_decode (sidx indx)
+{
+  return indx;
+}
+
+static inline sidx
+soffset_encode (size_t offset)
+{
+  return offset;
+}
+#endif /* not PRECOMPUTE_SELECTORS */
+
+/* Get element from the Sparse array `array' at offset `indx'.  */
+static inline void* sarray_get (struct sarray* array, sidx indx)
+{
+#ifdef PRECOMPUTE_SELECTORS
+  union sofftype x;
+  x.idx = indx;
+#ifdef OBJC_SPARSE3
+  return array->
+    indices[x.off.ioffset]->
+    buckets[x.off.boffset]->
+    elems[x.off.eoffset];
+#else /* OBJC_SPARSE2 */
+  return array->buckets[x.off.boffset]->elems[x.off.eoffset];
+#endif /* OBJC_SPARSE2 */
+#else /* not PRECOMPUTE_SELECTORS */
+#ifdef OBJC_SPARSE3
+  return array->
+    indices[indx / INDEX_CAPACITY]->
+    buckets[(indx / BUCKET_SIZE) % INDEX_SIZE]->
+    elems[indx % BUCKET_SIZE];
+#else /* OBJC_SPARSE2 */
+  return array->buckets[indx / BUCKET_SIZE]->elems[indx % BUCKET_SIZE];
+#endif /* not OBJC_SPARSE3 */
+#endif /* not PRECOMPUTE_SELECTORS */
+}
+
+static inline void* sarray_get_safe (struct sarray* array, sidx indx)
+{
+  if (soffset_decode (indx) < array->capacity)
+    return sarray_get (array, indx);
+  else
+    return (array->empty_bucket->elems[0]);
+}
+
+#endif /* __sarray_INCLUDE_GNU */
diff --git a/libobjc/objc-private/selector.h b/libobjc/objc-private/selector.h
new file mode 100644
index 000000000..490e17105
--- /dev/null
+++ b/libobjc/objc-private/selector.h
@@ -0,0 +1,57 @@
+/* GNU Objective C Runtime selector implementation - Private functions
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Nicola Pero <nicola.pero@meta-innovation.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __objc_private_selector_INCLUDE_GNU
+#define __objc_private_selector_INCLUDE_GNU
+
+/* Private runtime functions that may go away or be rewritten or
+   replaced.  */
+
+/* Number of selectors stored in each of the selector tables.  */
+extern unsigned int __objc_selector_max_index;
+
+/* Initialize the selector tables.  This must be called by init.c.  */
+void __objc_init_selector_tables(void);
+
+/* Various private functions to register selectors.  */
+void __objc_register_selectors_from_class(Class);
+void __objc_register_selectors_from_list (struct objc_method_list *);
+void __objc_register_selectors_from_description_list
+(struct objc_method_description_list *method_list);
+void __objc_register_selectors_from_module (struct objc_selector *selectors);
+
+/* Return whether a selector is mapped or not ("mapped" meaning that
+   it has been inserted into the selector table).  This is private as
+   only the runtime should ever encounter or need to know about
+   unmapped selectors.  */
+BOOL sel_is_mapped (SEL aSel);
+
+/* Return selector representing name without registering it if it
+   doesn't exist.  Typically used internally by the runtime when it's
+   looking up methods that may or may not exist (such as +initialize)
+   in the most efficient way.  */
+SEL
+sel_get_any_uid (const char *name);
+
+#endif /* not __objc_private_selector_INCLUDE_GNU */
diff --git a/libobjc/objc-sync.c b/libobjc/objc-sync.c
new file mode 100644
index 000000000..d685a3596
--- /dev/null
+++ b/libobjc/objc-sync.c
@@ -0,0 +1,459 @@
+/* GNU Objective C Runtime @synchronized implementation
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Nicola Pero <nicola.pero@meta-innovation.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+/* This file implements objc_sync_enter() and objc_sync_exit(), the
+   two functions required to support @synchronized().
+
+   objc_sync_enter(object) needs to get a recursive lock associated
+   with 'object', and lock it.
+   
+   objc_sync_exit(object) needs to get the recursive lock associated
+   with 'object', and unlock it.  */
+
+/* To avoid the overhead of continuously allocating and deallocating
+   locks, we implement a pool of locks.  When a lock is needed for an
+   object, we get a lock from the pool and associate it with the
+   object.
+ 
+   The lock pool need to be protected by its own lock (the
+   "protection" lock), which has to be locked then unlocked each time
+   objc_sync_enter() and objc_sync_exit() are called.  To reduce the
+   contention on the protection lock, instead of a single pool with a
+   single (global) protection lock we use a number of smaller pools,
+   each with its own pool protection lock.  To decide which lock pool
+   to use for each object, we compute a hash from the object pointer.
+ 
+   The implementation of each lock pool uses a linked list of all the
+   locks in the pool (both unlocked, and locked); this works in the
+   assumption that the number of locks concurrently required is very
+   low.  In practice, it seems that you rarely see more than a few
+   locks ever concurrently required.
+ 
+   A standard case is a thread acquiring a lock recursively, over and
+   over again: for example when most methods of a class are protected
+   by @synchronized(self) but they also call each other.  We use
+   thread-local storage to implement a cache and optimize this case.
+   The cache stores locks that the thread successfully acquired,
+   allowing objc_sync_enter() and objc_sync_exit() to locate a lock
+   which is already held by the current thread without having to use
+   any protection lock or synchronization mechanism.  It can so detect
+   recursive locks/unlocks, and transform them into no-ops that
+   require no actual locking or synchronization mechanisms at all.  */
+
+/* You can disable the thread-local cache (most likely to benchmark
+   the code with and without it) by compiling with
+   -DSYNC_CACHE_DISABLE, or commenting out the following line.  */
+/* #define SYNC_CACHE_DISABLE */
+
+/* If thread-local storage is not available, automatically disable the
+   cache.  */
+#ifndef HAVE_TLS
+# define SYNC_CACHE_DISABLE
+#endif
+
+#include "objc-private/common.h"
+#include "objc/objc-sync.h"         /* For objc_sync_enter(), objc_sync_exit() */
+#include "objc/runtime.h"           /* For objc_malloc() */
+#include "objc/thr.h"               /* For objc_mutex_loc() and similar */
+#include "objc-private/objc-sync.h" /* For __objc_sync_init() */
+
+/* We have 32 pools of locks, each of them protected by its own
+   protection lock.  It's tempting to increase this number to reduce
+   contention; but in our tests it is high enough.  */
+#define SYNC_NUMBER_OF_POOLS 32
+
+/* Given an object, it determines which pool contains the associated
+   lock.  */
+#define SYNC_OBJECT_HASH(OBJECT) ((((size_t)OBJECT >> 8) ^ (size_t)OBJECT) & (SYNC_NUMBER_OF_POOLS - 1))
+
+/* The locks protecting each pool.  */
+static objc_mutex_t sync_pool_protection_locks[SYNC_NUMBER_OF_POOLS];
+
+/* The data structure (linked list) holding the locks.  */
+typedef struct lock_node
+{
+  /* Pointer to next entry on the list.  NULL indicates end of list.
+     You need to hold the appropriate sync_pool_protection_locks[N] to
+     read or write this variable.  */
+  struct lock_node *next;
+
+  /* The (recursive) lock.  Allocated when the node is created, and
+     always not-NULL, and unchangeable, after that.  */
+  objc_mutex_t lock;
+
+  /* This is how many times the objc_mutex_lock() has been called on
+     the lock (it is 0 when the lock is unused).  Used to track when
+     the lock is no longer associated with an object and can be reused
+     for another object.  It records "real" locks, potentially (but
+     not necessarily) by multiple threads.  You need to hold the
+     appropriate sync_pool_protection_locks[N] to read or write this
+     variable.  */
+  unsigned int usage_count;
+
+  /* The object that the lock is associated with.  This variable can
+     only be written when holding the sync_pool_protection_locks[N]
+     and when node->usage_count == 0, ie, the lock is not being used.
+     You can read this variable either when you hold the
+     sync_pool_protection_locks[N] or when you hold node->lock,
+     because in that case you know that node->usage_count can't get to
+     zero until you release the lock.  It is valid to have usage_count
+     == 0 and object != nil; in that case, the lock is not currently
+     being used, but is still currently associated with the
+     object.  */
+  id object;
+
+  /* This is a counter reserved for use by the thread currently
+     holding the lock.  So, you need to hold node->lock to read or
+     write this variable.  It is normally 0, and if the cache is not
+     being used, it is kept at 0 (even if recursive locks are being
+     done; in that case, no difference is made between recursive and
+     non-recursive locks: they all increase usage_count, and call
+     objc_mutex_lock()).  When the cache is being used, a thread may
+     be able to find a lock that it already holds using the cache; in
+     that case, to perform additional locks/unlocks it can
+     increase/decrease the recursive_usage_count (which does not
+     require any synchronization with other threads, since it's
+     protected by the node->lock itself) instead of the usage_count
+     (which requires locking the pool protection lock).  And it can
+     skip the call to objc_mutex_lock/unlock too.  */
+  unsigned int recursive_usage_count;
+} *lock_node_ptr;
+
+
+/* The pools of locks.  Each of them is a linked list of lock_nodes.
+   In the list we keep both unlocked and locked nodes.  */
+static lock_node_ptr sync_pool_array[SYNC_NUMBER_OF_POOLS];
+
+#ifndef SYNC_CACHE_DISABLE
+/* We store a cache of locks acquired by each thread in thread-local
+   storage.  */
+static __thread lock_node_ptr *lock_cache = NULL;
+
+/* This is a conservative implementation that uses a static array of
+   fixed size as cache.  Because the cache is an array that we scan
+   linearly, the bigger it is, the slower it gets.  This does not
+   matter much at small sizes (eg, the overhead of checking 8 cache
+   slots instead of 4 is very small compared to the other overheads
+   involved such as function calls and lock/unlock operations), but at
+   large sizes it becomes important as obviously there is a size over
+   which using the cache backfires: the lookup is so slow that the
+   cache slows down the software instead of speeding it up.  In
+   practice, it seems that most threads use a small number of
+   concurrent locks, so we have a conservative implementation with a
+   fixed-size cache of 8 locks which gives a very predictable
+   behaviour.  If a thread locks lots of different locks, only the
+   first 8 get the speed benefits of the cache, but the cache remains
+   always small, fast and predictable.
+ 
+   SYNC_CACHE_SIZE is the size of the lock cache for each thread.  */
+#define SYNC_CACHE_SIZE 8
+#endif /* SYNC_CACHE_DISABLE */
+
+/* Called at startup by init.c.  */
+void
+__objc_sync_init (void)
+{
+  int i;
+
+  for (i = 0; i < SYNC_NUMBER_OF_POOLS; i++)
+    {
+      lock_node_ptr new_node;
+      
+      /* Create a protection lock for each pool.  */
+      sync_pool_protection_locks[i] = objc_mutex_allocate ();
+
+      /* Preallocate a lock per pool.  */
+      new_node = objc_malloc (sizeof (struct lock_node));
+      new_node->lock = objc_mutex_allocate ();
+      new_node->object = nil;
+      new_node->usage_count = 0;
+      new_node->recursive_usage_count = 0;
+      new_node->next = NULL;
+
+      sync_pool_array[i] = new_node;
+    }
+}  
+
+int
+objc_sync_enter (id object)
+{
+#ifndef SYNC_CACHE_DISABLE
+  int free_cache_slot;
+#endif
+  int hash;
+  lock_node_ptr node;
+  lock_node_ptr unused_node;
+
+  if (object == nil)
+    return OBJC_SYNC_SUCCESS;
+
+#ifndef SYNC_CACHE_DISABLE
+  if (lock_cache == NULL)
+    {
+      /* Note that this calloc only happen only once per thread, the
+	 very first time a thread does a objc_sync_enter().  */
+      lock_cache = objc_calloc (SYNC_CACHE_SIZE, sizeof (lock_node_ptr));
+    }
+
+  /* Check the cache to see if we have a record of having already
+     locked the lock corresponding to this object.  While doing so,
+     keep track of the first free cache node in case we need it
+     later.  */ 
+  node = NULL;
+  free_cache_slot = -1;
+
+  {
+    int i;
+    for (i = 0; i < SYNC_CACHE_SIZE; i++)
+      {
+	lock_node_ptr locked_node = lock_cache[i];
+	
+	if (locked_node == NULL)
+	  {
+	    if (free_cache_slot == -1)
+	      free_cache_slot = i;
+	  }
+	else if (locked_node->object == object)
+	  {
+	    node = locked_node;
+	    break;
+	  }
+      }
+  }
+
+  if (node != NULL)
+    {
+      /* We found the lock.  Increase recursive_usage_count, which is
+	 protected by node->lock, which we already hold.  */
+      node->recursive_usage_count++;
+      
+      /* There is no need to actually lock anything, since we already
+	 hold the lock.  Correspondingly, objc_sync_exit() will just
+	 decrease recursive_usage_count and do nothing to unlock.  */
+      return OBJC_SYNC_SUCCESS;
+    }
+#endif /* SYNC_CACHE_DISABLE */
+
+  /* The following is the standard lookup for the lock in the standard
+     pool lock.  It requires a pool protection lock.  */
+  hash = SYNC_OBJECT_HASH(object);
+
+  /* Search for an existing lock for 'object'.  While searching, make
+     note of any unused lock if we find any.  */
+  unused_node = NULL;
+
+  objc_mutex_lock (sync_pool_protection_locks[hash]);
+
+  node = sync_pool_array[hash];
+
+  while (node != NULL)
+    {
+      if (node->object == object)
+	{
+	  /* We found the lock.  */
+	  node->usage_count++;
+	  objc_mutex_unlock (sync_pool_protection_locks[hash]);
+
+#ifndef SYNC_CACHE_DISABLE
+	  /* Put it in the cache.  */
+	  if (free_cache_slot != -1)
+	    lock_cache[free_cache_slot] = node;
+#endif
+
+	  /* Lock it.  */
+	  objc_mutex_lock (node->lock);
+
+	  return OBJC_SYNC_SUCCESS;
+	}
+
+      if (unused_node == NULL  &&  node->usage_count == 0)
+	{
+	  /* We found the first unused node.  Record it.  */
+	  unused_node = node;
+	}
+      
+      node = node->next;
+    }
+
+  /* An existing lock for 'object' could not be found.  */
+  if (unused_node != NULL)
+    {
+      /* But we found a unused lock; use it.  */
+      unused_node->object = object;
+      unused_node->usage_count = 1;
+      unused_node->recursive_usage_count = 0;
+      objc_mutex_unlock (sync_pool_protection_locks[hash]);
+
+#ifndef SYNC_CACHE_DISABLE
+      if (free_cache_slot != -1)
+	lock_cache[free_cache_slot] = unused_node;
+#endif
+
+      objc_mutex_lock (unused_node->lock);
+
+      return OBJC_SYNC_SUCCESS;
+    }
+  else
+    {
+      /* There are no unused nodes; allocate a new node.  */
+      lock_node_ptr new_node;
+
+      /* Create the node.  */
+      new_node = objc_malloc (sizeof (struct lock_node));
+      new_node->lock = objc_mutex_allocate ();
+      new_node->object = object;
+      new_node->usage_count = 1;
+      new_node->recursive_usage_count = 0;
+
+      /* Attach it at the beginning of the pool.  */
+      new_node->next = sync_pool_array[hash];
+      sync_pool_array[hash] = new_node;
+      objc_mutex_unlock (sync_pool_protection_locks[hash]);
+
+#ifndef SYNC_CACHE_DISABLE
+      if (free_cache_slot != -1)
+	lock_cache[free_cache_slot] = new_node;
+#endif
+
+      objc_mutex_lock (new_node->lock);
+
+      return OBJC_SYNC_SUCCESS;
+    }
+}
+
+int
+objc_sync_exit (id object)
+{
+  int hash;
+  lock_node_ptr node;
+
+  if (object == nil)
+    return OBJC_SYNC_SUCCESS;
+  
+#ifndef SYNC_CACHE_DISABLE
+  if (lock_cache != NULL)
+    {
+      int i;
+    
+      /* Find the lock in the cache.  */
+      node = NULL;
+      for (i = 0; i < SYNC_CACHE_SIZE; i++)
+	{
+	  lock_node_ptr locked_node = lock_cache[i];
+	  
+	  if (locked_node != NULL  &&  locked_node->object == object)
+	    {
+	      node = locked_node;
+	      break;
+	    }
+	}
+      /* Note that, if a node was found in the cache, the variable i
+	 now holds the index where it was found, which will be used to
+	 remove it from the cache.  */
+      if (node != NULL)
+	{
+	  if (node->recursive_usage_count > 0)
+	    {
+	      node->recursive_usage_count--;
+	      return OBJC_SYNC_SUCCESS;
+	    }
+	  else
+	    {
+	      /* We need to do a real unlock.  */
+	      hash = SYNC_OBJECT_HASH(object);
+	      
+	      /* TODO: If we had atomic increase/decrease operations
+		 with memory barriers, we could avoid the lock
+		 here!  */
+	      objc_mutex_lock (sync_pool_protection_locks[hash]);
+	      node->usage_count--;
+	      /* Normally, we do not reset object to nil here.  We'll
+		 leave the lock associated with that object, at zero
+		 usage count.  This makes it slighly more efficient to
+		 provide a lock for that object if (as likely)
+		 requested again.  If the object is deallocated, we
+		 don't care.  It will never match a new lock that is
+		 requested, and the node will be reused at some point.
+
+		 But, if garbage collection is enabled, leaving a
+		 pointer to the object in memory might prevent the
+		 object from being released.  In that case, we remove
+		 it (TODO: maybe we should avoid using the garbage
+		 collector at all ?  Nothing is ever deallocated in
+		 this file).  */
+#if OBJC_WITH_GC
+	      node->object = nil;
+#endif
+	      objc_mutex_unlock (sync_pool_protection_locks[hash]);
+	    
+	      /* PS: Between objc_mutex_unlock
+		 (sync_pool_protection_locks[hash]) and
+		 objc_mutex_unlock (node->lock), the pool is unlocked
+		 so other threads may allocate this same lock to
+		 another object (!).  This is not a problem, but it is
+		 curious.  */
+	      objc_mutex_unlock (node->lock);
+	      
+	      /* Remove the node from the cache.  */
+	      lock_cache[i] = NULL;
+	      
+	      return OBJC_SYNC_SUCCESS;
+	    }
+	}
+    }
+#endif	  
+
+  /* The cache either wasn't there, or didn't work (eg, we overflowed
+     it at some point and stopped recording new locks in the cache).
+     Proceed with a full search of the lock pool.  */
+  hash = SYNC_OBJECT_HASH(object);
+
+  objc_mutex_lock (sync_pool_protection_locks[hash]);
+
+  /* Search for an existing lock for 'object'.  */
+  node = sync_pool_array[hash];
+
+  while (node != NULL)
+    {
+      if (node->object == object)
+	{
+	  /* We found the lock.  */
+	  node->usage_count--;
+	  objc_mutex_unlock (sync_pool_protection_locks[hash]);
+
+	  objc_mutex_unlock (node->lock);
+
+	  /* No need to remove the node from the cache, since it
+	     wasn't found in the cache when we looked for it!  */
+	  return OBJC_SYNC_SUCCESS;
+	}
+      
+      node = node->next;
+    }
+
+  objc_mutex_unlock (sync_pool_protection_locks[hash]);
+
+  /* A lock for 'object' to unlock could not be found (!!).  */
+  return OBJC_SYNC_NOT_OWNING_THREAD_ERROR;
+}
diff --git a/libobjc/objc/NXConstStr.h b/libobjc/objc/NXConstStr.h
new file mode 100644
index 000000000..40eb66e32
--- /dev/null
+++ b/libobjc/objc/NXConstStr.h
@@ -0,0 +1,51 @@
+/* Interface for the NXConstantString class for Objective-C.
+   Copyright (C) 1995, 2004, 2009 Free Software Foundation, Inc.
+   Contributed by Pieter J. Schoenmakers <tiggr@es.ele.tue.nl>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+
+#ifndef __nxconstantstring_INCLUDE_GNU
+#define __nxconstantstring_INCLUDE_GNU
+
+#include "Object.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+@interface NXConstantString: Object
+{
+  char *c_string;
+  unsigned int len;
+}
+
+-(const char *) cString;
+-(unsigned int) length;
+
+@end
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/libobjc/objc/Object.h b/libobjc/objc/Object.h
new file mode 100644
index 000000000..f036b76b9
--- /dev/null
+++ b/libobjc/objc/Object.h
@@ -0,0 +1,68 @@
+/* Interface for the Object class for Objective-C.
+   Copyright (C) 1993, 1994, 1995, 2009, 2010 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+
+#ifndef __object_INCLUDE_GNU
+#define __object_INCLUDE_GNU
+
+#include "objc.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* The Object class is a very minimal root class included with the
+   runtime.  It is used as superclass for the two classes included
+   with the runtime, Protocol and NXConstantString.
+
+   Because Objective-C allows multiple root classes, you can define
+   your own root class, different from Object.
+
+   In particular, a Foundation library (such as GNUstep Base) is
+   expected to provide its own root class (typically called NSObject),
+   fully integrated with the library's own high-level features.  It is
+   expected that you should always use and interact with NSObject, and
+   mostly ignore Object.  */
+
+/* All classes are derived from Object.  As such, this is the overhead
+   tacked onto those objects.  */
+@interface Object
+{
+  Class isa; /* A pointer to the instance's class structure.  */
+}
+- (Class)class;
+- (BOOL)isEqual: (id)anObject;
+@end
+
+/* All of the following includes were deprecated in GCC 4.6 and will
+   be removed in the next release.  */
+#include "deprecated/hash.h"
+#include "deprecated/typedstream.h"
+#include "deprecated/Object.h"
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/libobjc/objc/Protocol.h b/libobjc/objc/Protocol.h
new file mode 100644
index 000000000..1cf9892b2
--- /dev/null
+++ b/libobjc/objc/Protocol.h
@@ -0,0 +1,56 @@
+/* Declare the class Protocol for Objective C programs.
+   Copyright (C) 1993, 2004, 2009, 2010 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+
+#ifndef __Protocol_INCLUDE_GNU
+#define __Protocol_INCLUDE_GNU
+
+#include "Object.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+@interface Protocol : Object
+{
+@private
+  char *protocol_name;
+  struct objc_protocol_list *protocol_list;
+  struct objc_method_description_list *instance_methods, *class_methods; 
+}
+@end
+
+/* The Protocol methods have been replaced by
+     protocol_getName()
+     protocol_conformsToProtocol()
+     protocol_getMethodDescription()
+*/
+
+#include "deprecated/Protocol.h"
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* not __Protocol_INCLUDE_GNU */
diff --git a/libobjc/objc/README b/libobjc/objc/README
new file mode 100644
index 000000000..4a8be6e56
--- /dev/null
+++ b/libobjc/objc/README
@@ -0,0 +1,13 @@
+This directory contains the public headers that are installed when
+libobjc is installed.
+
+Deprecated parts of the API should be moved into objc/deprecated and
+then included by public headers until they are finally removed.  For
+example, if objc-api.h contains an _objc_unexpected_exception variable
+which is then deprecated, it should be moved into a header in
+objc/deprecated.  This header is then included into objc-api.h.
+
+The result is that all the deprecated parts of the API are clearly
+separated in objc/deprecated, while objc/ retains only the current public
+API.
+
diff --git a/libobjc/objc/deprecated/METHOD_NULL.h b/libobjc/objc/deprecated/METHOD_NULL.h
new file mode 100644
index 000000000..6912be345
--- /dev/null
+++ b/libobjc/objc/deprecated/METHOD_NULL.h
@@ -0,0 +1,2 @@
+/* For functions which return Method_t */
+#define METHOD_NULL	(Method_t)0
diff --git a/libobjc/objc/deprecated/MetaClass.h b/libobjc/objc/deprecated/MetaClass.h
new file mode 100644
index 000000000..01597782c
--- /dev/null
+++ b/libobjc/objc/deprecated/MetaClass.h
@@ -0,0 +1 @@
+typedef struct objc_class *MetaClass;
diff --git a/libobjc/objc/deprecated/Object.h b/libobjc/objc/deprecated/Object.h
new file mode 100644
index 000000000..e15cf7dd9
--- /dev/null
+++ b/libobjc/objc/deprecated/Object.h
@@ -0,0 +1,84 @@
+/* The following methods were deprecated in GCC 4.6.0 and will be
+   removed in the next GCC release.  */
+@interface Object (Deprecated)
+/* Initializing classes and instances */
++ initialize;
+- init;
+
+/* Creating, freeing, and copying instances */
++ new;
++ alloc;
+- free;
+- copy;
+- shallowCopy;
+- deepen;
+- deepCopy;
+
+/* Identifying classes */
+- (Class)superClass;
+- (MetaClass)metaClass;
+- (const char *)name;
+
+/* Identifying and comparing objects */
+- self;
+- (unsigned int)hash;
+- (int)compare:(id)anotherObject;
+
+/* Testing object type */
+- (BOOL)isMetaClass;
+- (BOOL)isClass;
+- (BOOL)isInstance;
+
+/* Testing inheritance relationships */
+- (BOOL)isKindOf:(Class)aClassObject;
+- (BOOL)isMemberOf:(Class)aClassObject;
+- (BOOL)isKindOfClassNamed:(const char *)aClassName;
+- (BOOL)isMemberOfClassNamed:(const char *)aClassName;
+
+/* Testing class functionality */
++ (BOOL)instancesRespondTo:(SEL)aSel;
+- (BOOL)respondsTo:(SEL)aSel;
+
+/* Testing protocol conformance */
+- (BOOL)conformsTo:(Protocol*)aProtocol;
+
+/* Introspection */
++ (IMP)instanceMethodFor:(SEL)aSel;
+- (IMP)methodFor:(SEL)aSel;
++ (struct objc_method_description *)descriptionForInstanceMethod:(SEL)aSel;
+- (struct objc_method_description *)descriptionForMethod:(SEL)aSel;
+
+/* Sending messages determined at run time */
+- perform:(SEL)aSel;
+- perform:(SEL)aSel with:anObject;
+- perform:(SEL)aSel with:anObject1 with:anObject2;
+
+/* Forwarding */
+- (retval_t)forward:(SEL)aSel :(arglist_t)argFrame;
+- (retval_t)performv:(SEL)aSel :(arglist_t)argFrame;
+
+/* Posing */
++ poseAs:(Class)aClassObject;
+- (Class)transmuteClassTo:(Class)aClassObject;
+
+/* Enforcing intentions */
+- subclassResponsibility:(SEL)aSel;
+- notImplemented:(SEL)aSel;
+- shouldNotImplement:(SEL)aSel;
+
+/* Error handling */
+- doesNotRecognize:(SEL)aSel;
+- error:(const char *)aString, ...;
+
+/* Archiving */
++ (int)version;
++ setVersion:(int)aVersion;
+
++ (int)streamVersion: (TypedStream*)aStream; /* __attribute__ ((deprecated)) */
+
+- read: (TypedStream*)aStream; /* __attribute__ ((deprecated)) */
+- write: (TypedStream*)aStream; /* __attribute__ ((deprecated)) */
+- awake; /* __attribute__ ((deprecated)) */
+
+@end
+
diff --git a/libobjc/objc/deprecated/Protocol.h b/libobjc/objc/deprecated/Protocol.h
new file mode 100644
index 000000000..7a77f51a0
--- /dev/null
+++ b/libobjc/objc/deprecated/Protocol.h
@@ -0,0 +1,13 @@
+/* The following methods were deprecated in GCC 4.6.0 and will be
+   removed in the next GCC release.  */
+@interface Protocol (Deprecated)
+/* Obtaining attributes intrinsic to the protocol */
+- (const char *)name;
+
+/* Testing protocol conformance */
+- (BOOL) conformsTo: (Protocol *)aProtocolObject;
+
+/* Looking up information specific to a protocol */
+- (struct objc_method_description *) descriptionForInstanceMethod:(SEL)aSel;
+- (struct objc_method_description *) descriptionForClassMethod:(SEL)aSel;
+@end
diff --git a/libobjc/objc/deprecated/README b/libobjc/objc/deprecated/README
new file mode 100644
index 000000000..3f105196e
--- /dev/null
+++ b/libobjc/objc/deprecated/README
@@ -0,0 +1,11 @@
+This directory contains declarations and features that are deprecated
+and that will be removed in future versions of the compiler.
+
+Note that files in this directory are not really usable headers on
+their own - they shouldn't be included directly by end users.  They
+are header fragments containing deprecated APIs that are still
+included (until removed) from the real headers in objc/.
+
+Files in this directory should not #include any other objc header.
+Any include that they need should be done in the real objc/ headers
+before including these fragments.
diff --git a/libobjc/objc/deprecated/STR.h b/libobjc/objc/deprecated/STR.h
new file mode 100644
index 000000000..17c20e2d6
--- /dev/null
+++ b/libobjc/objc/deprecated/STR.h
@@ -0,0 +1,2 @@
+/* Incredibly obsolete.  */
+typedef char *STR;  /* String alias */
diff --git a/libobjc/objc/deprecated/hash.h b/libobjc/objc/deprecated/hash.h
new file mode 100644
index 000000000..8b718a441
--- /dev/null
+++ b/libobjc/objc/deprecated/hash.h
@@ -0,0 +1,211 @@
+/* Hash tables for Objective C method dispatch.
+   Copyright (C) 1993, 1995, 1996, 2004, 2009 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+
+
+#ifndef __hash_INCLUDE_GNU
+#define __hash_INCLUDE_GNU
+
+#include <stddef.h>
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/*
+ * This data structure is used to hold items
+ *  stored in a hash table.  Each node holds 
+ *  a key/value pair.
+ *
+ * Items in the cache are really of type void *.
+ */
+typedef struct cache_node
+{
+  struct cache_node *next;	/* Pointer to next entry on the list.
+				   NULL indicates end of list. */
+  const void *key;		/* Key used to locate the value.  Used
+				   to locate value when more than one
+				   key computes the same hash
+				   value. */
+  void *value;			/* Value stored for the key. */
+} *node_ptr;
+
+
+/*
+ * This data type is the function that computes a hash code given a key.
+ * Therefore, the key can be a pointer to anything and the function specific
+ * to the key type. 
+ *
+ * Unfortunately there is a mutual data structure reference problem with this
+ * typedef.  Therefore, to remove compiler warnings the functions passed to
+ * objc_hash_new will have to be casted to this type. 
+ */
+typedef unsigned int (*hash_func_type) (void *, const void *);
+
+/*
+ * This data type is the function that compares two hash keys and returns an
+ * integer greater than, equal to, or less than 0, according as the first
+ * parameter is lexicographically greater than, equal to, or less than the
+ * second. 
+ */
+
+typedef int (*compare_func_type) (const void *, const void *);
+
+
+/*
+ * This data structure is the cache.
+ *
+ * It must be passed to all of the hashing routines
+ *   (except for new).
+ */
+typedef struct cache
+{
+  /* Variables used to implement the hash itself.  */
+  node_ptr *node_table; /* Pointer to an array of hash nodes.  */
+  /* Variables used to track the size of the hash table so to determine
+    when to resize it.  */
+  unsigned int size; /* Number of buckets allocated for the hash table
+			(number of array entries allocated for
+			"node_table").  Must be a power of two.  */
+  unsigned int used; /* Current number of entries in the hash table.  */
+  unsigned int mask; /* Precomputed mask.  */
+
+  /* Variables used to implement indexing through the hash table.  */
+
+  unsigned int last_bucket; /* Tracks which entry in the array where
+			       the last value was returned.  */
+  /* Function used to compute a hash code given a key. 
+     This function is specified when the hash table is created.  */
+  hash_func_type    hash_func;
+  /* Function used to compare two hash keys to see if they are equal.  */
+  compare_func_type compare_func;
+} *cache_ptr;
+
+
+/* Allocate and initialize a hash table.  */ 
+
+cache_ptr objc_hash_new (unsigned int size,
+			 hash_func_type hash_func,
+			 compare_func_type compare_func);
+                       
+/* Deallocate all of the hash nodes and the cache itself.  */
+
+void objc_hash_delete (cache_ptr cache);
+
+/* Add the key/value pair to the hash table.  If the
+   hash table reaches a level of fullness then it will be resized. 
+                                                   
+   assert if the key is already in the hash.  */
+
+void objc_hash_add (cache_ptr *cachep, const void *key, void *value);
+     
+/* Remove the key/value pair from the hash table.  
+   assert if the key isn't in the table.  */
+
+void objc_hash_remove (cache_ptr cache, const void *key);
+
+/* Used to index through the hash table.  Start with NULL
+   to get the first entry.
+                                                  
+   Successive calls pass the value returned previously.
+   ** Don't modify the hash during this operation *** 
+                                                  
+   Cache nodes are returned such that key or value can
+   be extracted.  */
+
+node_ptr objc_hash_next (cache_ptr cache, node_ptr node);
+
+/* Used to return a value from a hash table using a given key.  */
+
+void *objc_hash_value_for_key (cache_ptr cache, const void *key);
+
+/* Used to determine if the given key exists in the hash table */
+
+BOOL objc_hash_is_key_in_hash (cache_ptr cache, const void *key);
+
+/************************************************
+
+        Useful hashing functions.  
+        
+        Declared inline for your pleasure.
+        
+************************************************/
+
+/* Calculate a hash code by performing some 
+   manipulation of the key pointer.  (Use the lowest bits
+   except for those likely to be 0 due to alignment.)  */
+
+static inline unsigned int
+objc_hash_ptr (cache_ptr cache, const void *key)
+{
+  return ((size_t)key / sizeof (void *)) & cache->mask;
+}
+
+
+/* Calculate a hash code by iterating over a NULL 
+   terminate string.  */
+static inline unsigned int 
+objc_hash_string (cache_ptr cache, const void *key)
+{
+  unsigned int ret = 0;
+  unsigned int ctr = 0;
+  const char *ckey = (const char *) key;
+        
+  while (*ckey) {
+    ret ^= *ckey++ << ctr;
+    ctr = (ctr + 1) % sizeof (void *);
+  }
+
+  return ret & cache->mask;
+}
+
+
+/* Compare two pointers for equality.  */
+static inline int 
+objc_compare_ptrs (const void *k1, const void *k2)
+{
+  return (k1 == k2);
+}
+
+
+/* Compare two strings.  */
+static inline int 
+objc_compare_strings (const void *k1, const void *k2)
+{
+  if (k1 == k2)
+    return 1;
+  else if (k1 == 0 || k2 == 0)
+    return 0;
+  else
+    return ! strcmp ((const char *) k1, (const char *) k2);
+}
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+#endif /* not __hash_INCLUDE_GNU */
diff --git a/libobjc/objc/deprecated/objc-list.h b/libobjc/objc/deprecated/objc-list.h
new file mode 100644
index 000000000..e542bfc04
--- /dev/null
+++ b/libobjc/objc/deprecated/objc-list.h
@@ -0,0 +1,155 @@
+/* Generic single linked list to keep various information 
+   Copyright (C) 1993, 1994, 1996, 2009 Free Software Foundation, Inc.
+   Contributed by Kresten Krab Thorup.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+
+#ifndef __GNU_OBJC_LIST_H
+#define __GNU_OBJC_LIST_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+struct objc_list {
+  void *head;
+  struct objc_list *tail;
+};
+
+/* Return a cons cell produced from (head . tail) */
+
+static inline struct objc_list* 
+list_cons(void* head, struct objc_list* tail)
+{
+  struct objc_list* cell;
+
+  cell = (struct objc_list*)objc_malloc(sizeof(struct objc_list));
+  cell->head = head;
+  cell->tail = tail;
+  return cell;
+}
+
+/* Return the length of a list, list_length(NULL) returns zero */
+
+static inline int
+list_length(struct objc_list* list)
+{
+  int i = 0;
+  while(list)
+    {
+      i += 1;
+      list = list->tail;
+    }
+  return i;
+}
+
+/* Return the Nth element of LIST, where N count from zero.  If N 
+   larger than the list length, NULL is returned  */
+
+static inline void*
+list_nth(int indx, struct objc_list* list)
+{
+  while(indx-- != 0)
+    {
+      if(list->tail)
+	list = list->tail;
+      else
+	return 0;
+    }
+  return list->head;
+}
+
+/* Remove the element at the head by replacing it by its successor */
+
+static inline void
+list_remove_head(struct objc_list** list)
+{
+  if ((*list)->tail)
+    {
+      struct objc_list* tail = (*list)->tail; /* fetch next */
+      *(*list) = *tail;		/* copy next to list head */
+      objc_free(tail);			/* free next */
+    }
+  else				/* only one element in list */
+    {
+      objc_free(*list);
+      (*list) = 0;
+    }
+}
+
+
+/* Remove the element with `car' set to ELEMENT */
+
+static inline void
+list_remove_elem(struct objc_list** list, void* elem)
+{
+  while (*list) {
+    if ((*list)->head == elem)
+      list_remove_head(list);
+    list = &((*list)->tail);
+  }
+}
+
+/* Map FUNCTION over all elements in LIST */
+
+static inline void
+list_mapcar(struct objc_list* list, void(*function)(void*))
+{
+  while(list)
+    {
+      (*function)(list->head);
+      list = list->tail;
+    }
+}
+
+/* Return element that has ELEM as car */
+
+static inline struct objc_list**
+list_find(struct objc_list** list, void* elem)
+{
+  while(*list)
+    {
+    if ((*list)->head == elem)
+      return list;
+    list = &((*list)->tail);
+    }
+  return NULL;
+}
+
+/* Free list (backwards recursive) */
+
+static inline void
+list_free(struct objc_list* list)
+{
+  if(list)
+    {
+      list_free(list->tail);
+      objc_free(list);
+    }
+}
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* not __GNU_OBJC_LIST_H */
diff --git a/libobjc/objc/deprecated/objc_error.h b/libobjc/objc/deprecated/objc_error.h
new file mode 100644
index 000000000..7a7ebe941
--- /dev/null
+++ b/libobjc/objc/deprecated/objc_error.h
@@ -0,0 +1,56 @@
+/* This API is incredibly limited and unsophisticated.  objc_error()
+   generally causes the program to abort, so it should only be used
+   when something so dramatic happens that it could be pointless to
+   continue.  Only two cases I can think of: failure to allocate new
+   memory or failure to load an Objective-C module.
+*/
+/* Error handling
+  
+   Call objc_error() or objc_verror() to record an error; this error
+   routine will generally exit the program but not necessarily if the
+   user has installed his own error handler.
+  
+   Call objc_set_error_handler to assign your own function for
+   handling errors.  The function should return YES if it is ok
+   to continue execution, or return NO or just abort if the
+   program should be stopped.  The default error handler is just to
+   print a message on stderr.
+  
+   The error handler function should be of type objc_error_handler
+   The first parameter is an object instance of relevance.
+   The second parameter is an error code.
+   The third parameter is a format string in the printf style.
+   The fourth parameter is a variable list of arguments.  */
+void objc_error(id object, int code, const char* fmt, ...);
+void objc_verror(id object, int code, const char* fmt, va_list ap);
+typedef BOOL (*objc_error_handler)(id, int code, const char *fmt, va_list ap);
+objc_error_handler objc_set_error_handler(objc_error_handler func);
+
+/* Error codes
+   These are used by the runtime library, and your
+   error handling may use them to determine if the error is
+   hard or soft thus whether execution can continue or abort.  */
+#define OBJC_ERR_UNKNOWN 0             /* Generic error */
+
+#define OBJC_ERR_OBJC_VERSION 1        /* Incorrect runtime version */
+#define OBJC_ERR_GCC_VERSION 2         /* Incorrect compiler version */
+#define OBJC_ERR_MODULE_SIZE 3         /* Bad module size */
+#define OBJC_ERR_PROTOCOL_VERSION 4    /* Incorrect protocol version */
+
+#define OBJC_ERR_MEMORY 10             /* Out of memory */
+
+#define OBJC_ERR_RECURSE_ROOT 20       /* Attempt to archive the root
+					  object more than once. */
+#define OBJC_ERR_BAD_DATA 21           /* Didn't read expected data */
+#define OBJC_ERR_BAD_KEY 22            /* Bad key for object */
+#define OBJC_ERR_BAD_CLASS 23          /* Unknown class */
+#define OBJC_ERR_BAD_TYPE 24           /* Bad type specification */
+#define OBJC_ERR_NO_READ 25            /* Cannot read stream */
+#define OBJC_ERR_NO_WRITE 26           /* Cannot write stream */
+#define OBJC_ERR_STREAM_VERSION 27     /* Incorrect stream version */
+#define OBJC_ERR_BAD_OPCODE 28         /* Bad opcode */
+
+#define OBJC_ERR_UNIMPLEMENTED 30      /* Method is not implemented */
+
+#define OBJC_ERR_BAD_STATE 40          /* Bad thread state */
+
diff --git a/libobjc/objc/deprecated/objc_get_uninstalled_dtable.h b/libobjc/objc/deprecated/objc_get_uninstalled_dtable.h
new file mode 100644
index 000000000..48d508a15
--- /dev/null
+++ b/libobjc/objc/deprecated/objc_get_uninstalled_dtable.h
@@ -0,0 +1,2 @@
+objc_EXPORT struct sarray* 
+objc_get_uninstalled_dtable(void);
diff --git a/libobjc/objc/deprecated/objc_malloc.h b/libobjc/objc/deprecated/objc_malloc.h
new file mode 100644
index 000000000..cf6c6e9d0
--- /dev/null
+++ b/libobjc/objc/deprecated/objc_malloc.h
@@ -0,0 +1,17 @@
+/*
+** Hook functions for memory allocation and disposal.
+** This makes it easy to substitute garbage collection systems
+** such as Boehm's GC by assigning these function pointers
+** to the GC's allocation routines.  By default these point
+** to the ANSI standard malloc, realloc, free, etc.
+**
+** Users should call the normal objc routines above for
+** memory allocation and disposal within their programs.
+*/
+objc_EXPORT void *(*_objc_malloc)(size_t);
+objc_EXPORT void *(*_objc_atomic_malloc)(size_t);
+objc_EXPORT void *(*_objc_valloc)(size_t);
+objc_EXPORT void *(*_objc_realloc)(void *, size_t);
+objc_EXPORT void *(*_objc_calloc)(size_t, size_t);
+objc_EXPORT void (*_objc_free)(void *);
+
diff --git a/libobjc/objc/deprecated/objc_msg_sendv.h b/libobjc/objc/deprecated/objc_msg_sendv.h
new file mode 100644
index 000000000..825d9a766
--- /dev/null
+++ b/libobjc/objc/deprecated/objc_msg_sendv.h
@@ -0,0 +1,12 @@
+/* The following types and functions are provided only for
+   backwards-compatibility and should not be used in new code.  They
+   were deprecated in GCC 4.6 and will be removed in the next
+   release.  */
+typedef void* retval_t;		/* return value */
+typedef void(*apply_t)(void);	/* function pointer */
+typedef union arglist {
+  char *arg_ptr;
+  char arg_regs[sizeof (char*)];
+} *arglist_t;		        /* argument frame */
+
+objc_EXPORT retval_t objc_msg_sendv(id, SEL, arglist_t);
diff --git a/libobjc/objc/deprecated/objc_object_alloc.h b/libobjc/objc/deprecated/objc_object_alloc.h
new file mode 100644
index 000000000..f6336ca8e
--- /dev/null
+++ b/libobjc/objc/deprecated/objc_object_alloc.h
@@ -0,0 +1,8 @@
+/* These functions are deprecated and currently ignored.  */
+/*
+** Hook functions for allocating, copying and disposing of instances
+*/
+objc_EXPORT id (*_objc_object_alloc)(Class _class);
+objc_EXPORT id (*_objc_object_copy)(id object);
+objc_EXPORT id (*_objc_object_dispose)(id object);
+
diff --git a/libobjc/objc/deprecated/objc_unexpected_exception.h b/libobjc/objc/deprecated/objc_unexpected_exception.h
new file mode 100644
index 000000000..69ffd4e87
--- /dev/null
+++ b/libobjc/objc/deprecated/objc_unexpected_exception.h
@@ -0,0 +1,9 @@
+/*
+** Hook for uncaught exceptions.  This hook is called when an
+** exception is thrown and no valid exception handler is in place.
+** The function is expected never to return.  If the function returns
+** the result is currently undefined.  This is deprecated.  Please use
+** objc_set_uncaught_exception_handler() from objc/objc-exception.h
+** instead.
+*/
+objc_EXPORT void (*_objc_unexpected_exception)(id) __attribute__ ((deprecated));
diff --git a/libobjc/objc/deprecated/objc_valloc.h b/libobjc/objc/deprecated/objc_valloc.h
new file mode 100644
index 000000000..a715f1a73
--- /dev/null
+++ b/libobjc/objc/deprecated/objc_valloc.h
@@ -0,0 +1,2 @@
+void *
+objc_valloc(size_t size);
diff --git a/libobjc/objc/deprecated/sarray.h b/libobjc/objc/deprecated/sarray.h
new file mode 100644
index 000000000..aa2f3350a
--- /dev/null
+++ b/libobjc/objc/deprecated/sarray.h
@@ -0,0 +1,240 @@
+/* Sparse Arrays for Objective C dispatch tables
+   Copyright (C) 1993, 1995, 1996, 2004, 2009 Free Software Foundation, Inc.
+   Contributed by Kresten Krab Thorup.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+
+#ifndef __sarray_INCLUDE_GNU
+#define __sarray_INCLUDE_GNU
+
+#define OBJC_SPARSE2		/* 2-level sparse array */
+/* #define OBJC_SPARSE3 */      /* 3-level sparse array */
+
+#ifdef OBJC_SPARSE2
+extern const char* __objc_sparse2_id;
+#endif
+
+#ifdef OBJC_SPARSE3
+extern const char* __objc_sparse3_id;
+#endif
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+extern int nbuckets;		/* for stats */
+extern int nindices;
+extern int narrays;
+extern int idxsize;
+
+/* An unsigned integer of same size as a pointer */
+#define SIZET_BITS (sizeof(size_t)*8)
+
+#if defined(__sparc__) || defined(OBJC_SPARSE2)
+#define PRECOMPUTE_SELECTORS
+#endif
+
+#ifdef OBJC_SPARSE3
+
+/* Buckets are 8 words each */
+#define BUCKET_BITS 3
+#define BUCKET_SIZE (1<<BUCKET_BITS)
+#define BUCKET_MASK (BUCKET_SIZE-1)
+
+/* Indices are 16 words each */
+#define INDEX_BITS 4
+#define INDEX_SIZE (1<<INDEX_BITS)
+#define INDEX_MASK (INDEX_SIZE-1)
+
+#define INDEX_CAPACITY (BUCKET_SIZE*INDEX_SIZE)
+
+#else /* OBJC_SPARSE2 */
+
+/* Buckets are 32 words each */
+#define BUCKET_BITS 5
+#define BUCKET_SIZE (1<<BUCKET_BITS)
+#define BUCKET_MASK (BUCKET_SIZE-1)
+
+#endif /* OBJC_SPARSE2 */
+
+typedef size_t sidx;
+
+#ifdef PRECOMPUTE_SELECTORS
+
+struct soffset {
+#ifdef OBJC_SPARSE3
+  unsigned int unused : SIZET_BITS/4;
+  unsigned int eoffset : SIZET_BITS/4;
+  unsigned int boffset : SIZET_BITS/4;
+  unsigned int ioffset : SIZET_BITS/4;
+#else /* OBJC_SPARSE2 */
+#ifdef __sparc__
+  unsigned long boffset : (SIZET_BITS - 2) - BUCKET_BITS;
+  unsigned int eoffset : BUCKET_BITS;
+  unsigned int unused  : 2;
+#else
+  unsigned int boffset : SIZET_BITS/2;
+  unsigned int eoffset : SIZET_BITS/2;
+#endif
+#endif /* OBJC_SPARSE2 */
+};
+
+union sofftype {
+  struct soffset off;
+  sidx idx;
+};
+
+#endif /* not PRECOMPUTE_SELECTORS */
+
+union sversion {
+  int	version;
+  void *next_free;
+};
+
+struct sbucket {
+  void* elems[BUCKET_SIZE];	/* elements stored in array */
+  union sversion	version;		/* used for copy-on-write */
+};
+
+#ifdef OBJC_SPARSE3
+
+struct sindex {
+  struct sbucket* buckets[INDEX_SIZE];
+  union sversion	version;		/* used for copy-on-write */
+};
+
+#endif /* OBJC_SPARSE3 */
+
+struct sarray {
+#ifdef OBJC_SPARSE3
+  struct sindex** indices;
+  struct sindex* empty_index;
+#else /* OBJC_SPARSE2 */
+  struct sbucket** buckets;
+#endif  /* OBJC_SPARSE2 */
+  struct sbucket* empty_bucket;
+  union sversion	version;		/* used for copy-on-write */
+  short ref_count;
+  struct sarray* is_copy_of;
+  size_t capacity;
+};
+
+struct sarray* sarray_new(int, void* default_element);
+void sarray_free(struct sarray*);
+struct sarray* sarray_lazy_copy(struct sarray*);
+void sarray_realloc(struct sarray*, int new_size);
+void sarray_at_put(struct sarray*, sidx indx, void* elem);
+void sarray_at_put_safe(struct sarray*, sidx indx, void* elem);
+
+struct sarray* sarray_hard_copy(struct sarray*); /* ... like the name? */
+void sarray_remove_garbage(void);
+
+
+#ifdef PRECOMPUTE_SELECTORS
+/* Transform soffset values to ints and vica verca */
+static inline unsigned int
+soffset_decode(sidx indx)
+{
+  union sofftype x;
+  x.idx = indx;
+#ifdef OBJC_SPARSE3
+  return x.off.eoffset
+    + (x.off.boffset*BUCKET_SIZE)
+      + (x.off.ioffset*INDEX_CAPACITY);
+#else /* OBJC_SPARSE2 */
+  return x.off.eoffset + (x.off.boffset*BUCKET_SIZE);
+#endif /* OBJC_SPARSE2 */
+}
+
+static inline sidx
+soffset_encode(size_t offset)
+{
+  union sofftype x;
+  x.off.eoffset = offset%BUCKET_SIZE;
+#ifdef OBJC_SPARSE3
+  x.off.boffset = (offset/BUCKET_SIZE)%INDEX_SIZE;
+  x.off.ioffset = offset/INDEX_CAPACITY;
+#else /* OBJC_SPARSE2 */
+  x.off.boffset = offset/BUCKET_SIZE;
+#endif
+  return (sidx)x.idx;
+}
+
+#else /* not PRECOMPUTE_SELECTORS */
+
+static inline size_t
+soffset_decode(sidx indx)
+{
+  return indx;
+}
+
+static inline sidx
+soffset_encode(size_t offset)
+{
+  return offset;
+}
+#endif /* not PRECOMPUTE_SELECTORS */
+
+/* Get element from the Sparse array `array' at offset `indx' */
+
+static inline void* sarray_get(struct sarray* array, sidx indx)
+{
+#ifdef PRECOMPUTE_SELECTORS
+  union sofftype x;
+  x.idx = indx;
+#ifdef OBJC_SPARSE3
+  return 
+    array->
+      indices[x.off.ioffset]->
+	buckets[x.off.boffset]->
+	  elems[x.off.eoffset];
+#else /* OBJC_SPARSE2 */
+  return array->buckets[x.off.boffset]->elems[x.off.eoffset];
+#endif /* OBJC_SPARSE2 */
+#else /* not PRECOMPUTE_SELECTORS */
+#ifdef OBJC_SPARSE3
+  return array->
+    indices[indx/INDEX_CAPACITY]->
+      buckets[(indx/BUCKET_SIZE)%INDEX_SIZE]->
+	elems[indx%BUCKET_SIZE];
+#else /* OBJC_SPARSE2 */
+  return array->buckets[indx/BUCKET_SIZE]->elems[indx%BUCKET_SIZE];
+#endif /* not OBJC_SPARSE3 */
+#endif /* not PRECOMPUTE_SELECTORS */
+}
+
+static inline void* sarray_get_safe(struct sarray* array, sidx indx)
+{
+  if(soffset_decode(indx) < array->capacity)
+    return sarray_get(array, indx);
+  else
+    return (array->empty_bucket->elems[0]);
+}
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __sarray_INCLUDE_GNU */
diff --git a/libobjc/objc/deprecated/struct_objc_category.h b/libobjc/objc/deprecated/struct_objc_category.h
new file mode 100644
index 000000000..6de3980a9
--- /dev/null
+++ b/libobjc/objc/deprecated/struct_objc_category.h
@@ -0,0 +1,21 @@
+/*
+** The compiler generates one of these structures for each category.  A class
+** may have many categories and contain both instance and factory methods.  
+*/
+struct objc_category {
+  const char*   category_name;                /* Name of the category.  Name
+                                                contained in the () of the
+                                                category definition. */
+  const char*   class_name;                   /* Name of the class to which
+                                                the category belongs. */
+  MethodList_t  instance_methods;             /* Linked list of instance
+                                                methods defined in the 
+                                                category. NULL indicates no
+                                                instance methods defined. */
+  MethodList_t  class_methods;                /* Linked list of factory 
+                                                methods defined in the
+                                                category.  NULL indicates no
+                                                class methods defined. */
+  struct objc_protocol_list *protocols;	      /* List of Protocols 
+					         conformed to */
+};
diff --git a/libobjc/objc/deprecated/struct_objc_class.h b/libobjc/objc/deprecated/struct_objc_class.h
new file mode 100644
index 000000000..07927feb6
--- /dev/null
+++ b/libobjc/objc/deprecated/struct_objc_class.h
@@ -0,0 +1,56 @@
+/* This structure used to be public, but is now private to the runtime.  */
+#define __objc_STRUCT_OBJC_CLASS_defined
+
+/*
+** The compiler generates one of these structures for each class.  
+** 
+** This structure is the definition for classes. 
+** 
+** This structure is generated by the compiler in the executable and used by
+** the run-time during normal messaging operations.  Therefore some members
+** change type. The compiler generates "char* const" and places a string in
+** the following member variables:  super_class. 
+*/
+struct objc_class {     
+  MetaClass           class_pointer;          /* Pointer to the class's
+                                                meta class. */
+  struct objc_class*  super_class;            /* Pointer to the super 
+                                                class. NULL for class 
+                                                Object. */
+  const char*         name;                   /* Name of the class. */
+  long                version;                /* Unknown. */
+  unsigned long       info;                   /* Bit mask.  See class masks 
+                                                defined above. */
+  long                instance_size;          /* Size in bytes of the class.  
+                                                The sum of the class 
+						definition and all super 
+						class definitions. */
+#ifdef _WIN64
+  /* We pad the structure manually to prevent warning when -Wpadded
+     is used.  The compiler automatically pads the structures that it
+     generates, so this manually padded structure still matches the one
+     generated by the compiler, but if we don't pad manually, -Wpadded
+     detects that padding is being added and generates annoying warnings.
+     This hack is necessary as on LLP64 targets sizeof (long) isn't equal
+     to sizeof (void *).  */
+  long pad;
+#endif
+  struct objc_ivar_list* ivars;               /* Pointer to a structure that
+                                                describes the instance 
+                                                variables in the class
+                                                definition.  NULL indicates
+                                                no instance variables.  Does
+                                                not include super class
+                                                variables. */
+  struct objc_method_list*  methods;          /* Linked list of instance
+                                                methods defined for the 
+                                                class. */
+  struct sarray *    dtable;                  /* Pointer to instance 
+					         method dispatch table. */  
+  struct objc_class* subclass_list;           /* Subclasses */
+  struct objc_class* sibling_class;
+
+  struct objc_protocol_list *protocols;	      /* Protocols conformed to */
+  void* gc_object_type;
+};
+
diff --git a/libobjc/objc/deprecated/struct_objc_ivar.h b/libobjc/objc/deprecated/struct_objc_ivar.h
new file mode 100644
index 000000000..57170ad11
--- /dev/null
+++ b/libobjc/objc/deprecated/struct_objc_ivar.h
@@ -0,0 +1,15 @@
+/*
+** The compiler generates one of these structures for a class that has
+** instance variables defined in its specification. 
+*/
+typedef struct objc_ivar {
+    const char* ivar_name;                      /* Name of the instance
+                                                  variable as entered in the
+                                                  class definition. */
+    const char* ivar_type;                      /* Description of the Ivar's
+                                                  type.  Useful for 
+                                                  debuggers. */
+    int        ivar_offset;                    /* Byte offset from the base 
+                                                  address of the instance 
+                                                  structure to the variable. */
+} *Ivar_t;
diff --git a/libobjc/objc/deprecated/struct_objc_ivar_list.h b/libobjc/objc/deprecated/struct_objc_ivar_list.h
new file mode 100644
index 000000000..8f5051fb9
--- /dev/null
+++ b/libobjc/objc/deprecated/struct_objc_ivar_list.h
@@ -0,0 +1,10 @@
+typedef struct objc_ivar_list {
+  int   ivar_count;                             /* Number of structures (Ivar) 
+                                                  contained in the list.  One
+                                                  structure per instance 
+                                                  variable defined in the
+                                                  class. */
+  struct objc_ivar ivar_list[1];               /* Variable length 
+                                                  structure. */
+} IvarList, *IvarList_t;
+
diff --git a/libobjc/objc/deprecated/struct_objc_method.h b/libobjc/objc/deprecated/struct_objc_method.h
new file mode 100644
index 000000000..af83c07b6
--- /dev/null
+++ b/libobjc/objc/deprecated/struct_objc_method.h
@@ -0,0 +1,22 @@
+/*
+** The compiler generates one (or more) of these structures for a class that
+** has methods defined in its specification. 
+** 
+** The implementation of a class can be broken into separate pieces in a file
+** and categories can break them across modules. To handle this problem is a
+** singly linked list of methods. 
+*/
+struct objc_method {
+  SEL         method_name;                  /* This variable is the method's 
+                                               name.  It is a char*. 
+                                               The unique integer passed to 
+                                               objc_msg_send is a char* too.  
+                                               It is compared against 
+                                               method_name using strcmp. */
+  const char* method_types;                 /* Description of the method's
+                                               parameter list.  Useful for
+                                               debuggers. */
+  IMP         method_imp;                   /* Address of the method in the 
+                                               executable. */
+};
+
diff --git a/libobjc/objc/deprecated/struct_objc_method_list.h b/libobjc/objc/deprecated/struct_objc_method_list.h
new file mode 100644
index 000000000..5156cabbf
--- /dev/null
+++ b/libobjc/objc/deprecated/struct_objc_method_list.h
@@ -0,0 +1,9 @@
+typedef struct objc_method_list {
+  struct objc_method_list*  method_next;    /* This variable is used to link 
+                                               a method list to another.  It 
+                                               is a singly linked list. */
+  int            method_count;              /* Number of methods defined in 
+                                               this structure. */
+  Method method_list[1];                    /* Variable length 
+                                               structure. */
+} MethodList, *MethodList_t;
diff --git a/libobjc/objc/deprecated/struct_objc_module.h b/libobjc/objc/deprecated/struct_objc_module.h
new file mode 100644
index 000000000..57950851f
--- /dev/null
+++ b/libobjc/objc/deprecated/struct_objc_module.h
@@ -0,0 +1,24 @@
+/*
+** The compiler generates one of these structures for each module that
+** composes the executable (eg main.m).  
+** 
+** This data structure is the root of the definition tree for the module.  
+** 
+** A collect program runs between ld stages and creates a ObjC ctor array. 
+** That array holds a pointer to each module structure of the executable. 
+*/
+typedef struct objc_module {
+  unsigned long version; /* Version of the Module data structure.  */
+  unsigned long size;    /* sizeof(Module) according to the compiler -
+			    only used to sanity check that it matches
+			    sizeof(Module) according to the
+			    runtime.  */
+  const char* name;      /* Name of the file used to compile the
+			    module - not set by modern compilers for
+			    security reasons.  */
+  Symtab_t    symtab;    /* Pointer to the Symtab of the module.  The
+			    Symtab holds an array of pointers to the
+			    classes and categories defined in the
+			    module. */
+} Module, *Module_t;
+
diff --git a/libobjc/objc/deprecated/struct_objc_protocol.h b/libobjc/objc/deprecated/struct_objc_protocol.h
new file mode 100644
index 000000000..5344e3f54
--- /dev/null
+++ b/libobjc/objc/deprecated/struct_objc_protocol.h
@@ -0,0 +1,6 @@
+typedef struct objc_protocol {
+  struct objc_class* class_pointer;
+  char *protocol_name;
+  struct objc_protocol_list *protocol_list;
+  struct objc_method_description_list *instance_methods, *class_methods; 
+} Protocol;
diff --git a/libobjc/objc/deprecated/struct_objc_protocol_list.h b/libobjc/objc/deprecated/struct_objc_protocol_list.h
new file mode 100644
index 000000000..5e5788b50
--- /dev/null
+++ b/libobjc/objc/deprecated/struct_objc_protocol_list.h
@@ -0,0 +1,5 @@
+struct objc_protocol_list {
+  struct objc_protocol_list *next;
+  size_t count;
+  Protocol *list[1];
+};
diff --git a/libobjc/objc/deprecated/struct_objc_selector.h b/libobjc/objc/deprecated/struct_objc_selector.h
new file mode 100644
index 000000000..34aaf0d8b
--- /dev/null
+++ b/libobjc/objc/deprecated/struct_objc_selector.h
@@ -0,0 +1,20 @@
+/* This struct used to be public, but is now private to the runtime.  */
+
+/*
+** Definition of a selector.  Selectors themselves are not unique, but
+** the sel_id is a unique identifier.
+*/
+struct objc_selector
+{
+  void *sel_id;
+  const char *sel_types;
+};
+
+inline static BOOL
+sel_eq (SEL s1, SEL s2)
+{
+  if (s1 == 0 || s2 == 0)
+    return s1 == s2;
+  else
+    return s1->sel_id == s2->sel_id;
+}
diff --git a/libobjc/objc/deprecated/struct_objc_static_instances.h b/libobjc/objc/deprecated/struct_objc_static_instances.h
new file mode 100644
index 000000000..9d889bfc0
--- /dev/null
+++ b/libobjc/objc/deprecated/struct_objc_static_instances.h
@@ -0,0 +1,14 @@
+/* For every class which happens to have statically allocated instances in
+   this module, one OBJC_STATIC_INSTANCES is allocated by the compiler.
+   INSTANCES is NULL terminated and points to all statically allocated
+   instances of this class.  */
+struct objc_static_instances
+{
+  char *class_name;
+#ifdef __cplusplus
+  id instances[1];
+#else
+  id instances[0];
+#endif
+};
+
diff --git a/libobjc/objc/deprecated/struct_objc_symtab.h b/libobjc/objc/deprecated/struct_objc_symtab.h
new file mode 100644
index 000000000..75bb27f1b
--- /dev/null
+++ b/libobjc/objc/deprecated/struct_objc_symtab.h
@@ -0,0 +1,26 @@
+/* Whereas a Module (defined further down) is the root (typically) of a file,
+   a Symtab is the root of the class and category definitions within the
+   module.  
+   
+   A Symtab contains a variable length array of pointers to classes and
+   categories  defined in the module.   */
+typedef struct objc_symtab {
+  unsigned long sel_ref_cnt;  /* Unused (always set to 0). */
+  SEL      refs;              /* The table of selectors referenced in
+                                 this module.  This is terminated by a
+                                 selector with NULL sel_id and NULL
+                                 sel_types.  */
+  unsigned short cls_def_cnt;                   /* Number of classes compiled
+                                                  (defined) in the module. */
+  unsigned short cat_def_cnt;                   /* Number of categories 
+                                                  compiled (defined) in the 
+                                                  module. */
+
+  void      *defs[1];                           /* Variable array of pointers.
+                                                  cls_def_cnt of type Class 
+                                                  followed by cat_def_cnt of
+                                                  type Category_t, followed
+						  by a NULL terminated array
+						  of objc_static_instances. */
+} Symtab,   *Symtab_t;
+
diff --git a/libobjc/objc/deprecated/typedstream.h b/libobjc/objc/deprecated/typedstream.h
new file mode 100644
index 000000000..4d948d5fb
--- /dev/null
+++ b/libobjc/objc/deprecated/typedstream.h
@@ -0,0 +1,141 @@
+/* GNU Objective-C Typed Streams interface.
+   Copyright (C) 1993, 1995, 2004, 2009 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+
+#ifndef __typedstream_INCLUDE_GNU
+#define __typedstream_INCLUDE_GNU
+
+/* The API in this file was entirely deprecated in GCC 4.6.0 and will
+   be removed in the following GCC release.
+*/
+
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+typedef int (*objc_typed_read_func)(void*, char*, int);
+typedef int (*objc_typed_write_func)(void*, const char*, int);
+typedef int (*objc_typed_flush_func)(void*);
+typedef int (*objc_typed_eof_func)(void*);
+
+#define OBJC_READONLY   0x01
+#define OBJC_WRITEONLY  0x02
+
+#define OBJC_MANAGED_STREAM  0x01
+#define OBJC_FILE_STREAM     0x02
+#define OBJC_MEMORY_STREAM   0x04
+
+#define OBJC_TYPED_STREAM_VERSION 0x01
+
+typedef struct objc_typed_stream {
+  void* physical;
+  cache_ptr object_table;	/* read/written objects */
+  cache_ptr stream_table;	/* other read/written but shared things.. */
+  cache_ptr class_table;	/* class version mapping */
+  cache_ptr object_refs;	/* forward references */
+  int mode;			/* OBJC_READONLY or OBJC_WRITEONLY */
+  int type;			/* MANAGED, FILE, MEMORY etc bit string */
+  int version;			/* version used when writing */
+  int writing_root_p;
+  objc_typed_read_func read;
+  objc_typed_write_func write;
+  objc_typed_eof_func eof;
+  objc_typed_flush_func flush;
+} TypedStream;
+
+/* opcode masks */
+#define _B_VALUE   0x1fU
+#define _B_CODE    0xe0U
+#define _B_SIGN    0x10U
+#define _B_NUMBER  0x0fU
+
+/* standard opcodes */
+#define _B_INVALID 0x00U
+#define _B_SINT    0x20U
+#define _B_NINT    0x40U
+#define _B_SSTR    0x60U
+#define _B_NSTR    0x80U
+#define _B_RCOMM   0xa0U
+#define _B_UCOMM   0xc0U
+#define _B_EXT     0xe0U
+
+/* eXtension opcodes */
+#define _BX_OBJECT  0x00U
+#define _BX_CLASS   0x01U
+#define _BX_SEL     0x02U
+#define _BX_OBJREF  0x03U
+#define _BX_OBJROOT 0x04U
+#define _BX_EXT     0x1fU
+
+/*
+** Read and write objects as specified by TYPE.  All the `last'
+** arguments are pointers to the objects to read/write.  
+*/
+
+int objc_write_type (TypedStream* stream, const char* type, const void* data) __attribute__ ((deprecated));
+int objc_read_type (TypedStream* stream, const char* type, void* data) __attribute__ ((deprecated));
+
+int objc_write_types (TypedStream* stream, const char* type, ...) __attribute__ ((deprecated));
+int objc_read_types (TypedStream* stream, const char* type, ...) __attribute__ ((deprecated));
+
+int objc_write_object_reference (TypedStream* stream, id object) __attribute__ ((deprecated));
+int objc_write_root_object (TypedStream* stream, id object) __attribute__ ((deprecated));
+
+long objc_get_stream_class_version (TypedStream* stream, Class class_type) __attribute__ ((deprecated));
+
+
+/*
+** Convenience functions
+*/
+
+int objc_write_array (TypedStream* stream, const char* type,
+		      int count, const void* data) __attribute__ ((deprecated));
+int objc_read_array (TypedStream* stream, const char* type,
+		     int count, void* data) __attribute__ ((deprecated));
+
+int objc_write_object (TypedStream* stream, id object) __attribute__ ((deprecated));
+int objc_read_object (TypedStream* stream, id* object) __attribute__ ((deprecated));
+
+
+
+/*
+** Open a typed stream for reading or writing.  MODE may be either of
+** OBJC_READONLY or OBJC_WRITEONLY.  
+*/
+
+TypedStream* objc_open_typed_stream (FILE* physical, int mode) __attribute__ ((deprecated));
+TypedStream* objc_open_typed_stream_for_file (const char* file_name, int mode) __attribute__ ((deprecated));
+
+void objc_close_typed_stream (TypedStream* stream) __attribute__ ((deprecated));
+
+BOOL objc_end_of_typed_stream (TypedStream* stream) __attribute__ ((deprecated));
+void objc_flush_typed_stream (TypedStream* stream) __attribute__ ((deprecated));
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* not __typedstream_INCLUDE_GNU */
diff --git a/libobjc/objc/encoding.h b/libobjc/objc/encoding.h
new file mode 100644
index 000000000..7852466b8
--- /dev/null
+++ b/libobjc/objc/encoding.h
@@ -0,0 +1,117 @@
+/* Encoding of types for Objective C.
+   Copyright (C) 1993, 1997, 2002, 2004, 2009, 2010
+   Free Software Foundation, Inc.
+
+Author: Kresten Krab Thorup
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+
+#ifndef __encoding_INCLUDE_GNU
+#define __encoding_INCLUDE_GNU
+
+/* This file is to be used with the "traditional" GNU Objective-C
+   Runtime API (the one declared in objc/objc-api.h).  If you are
+   using the "modern" GNU Objective-C Runtime API, then the useful
+   functions from this file are declared in objc/runtime.h.  */
+
+#include "objc-api.h"
+#include <ctype.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/* The following are used in encode strings to describe some
+   qualifiers of method and ivar types.  */
+#define _C_CONST	'r'
+#define _C_IN		'n'
+#define _C_INOUT	'N'
+#define _C_OUT      	'o'
+#define _C_BYCOPY	'O'
+#define _C_BYREF	'R'
+#define _C_ONEWAY	'V'
+#define _C_GCINVISIBLE	'|'
+
+/* The same when used as flags.  */
+#define _F_CONST	0x01
+#define _F_IN		0x01
+#define _F_OUT		0x02
+#define _F_INOUT	0x03
+#define _F_BYCOPY	0x04
+#define _F_BYREF	0x08
+#define _F_ONEWAY	0x10
+#define _F_GCINVISIBLE	0x20
+
+int objc_sizeof_type (const char *type);
+int objc_alignof_type (const char *type);
+int objc_aligned_size (const char *type);
+int objc_promoted_size (const char *type);
+
+const char *objc_skip_type_qualifiers (const char *type);
+const char *objc_skip_typespec (const char *type);
+const char *objc_skip_offset (const char *type);
+const char *objc_skip_argspec (const char *type);
+unsigned objc_get_type_qualifiers (const char *type);
+
+/* The following functions are replaced, in the modern API, by
+   method_getNumberOfArguments(), method_getArgumentType().  */
+int method_get_number_of_arguments (struct objc_method *);
+int method_get_sizeof_arguments (struct objc_method *);
+
+/* The following functions are deprecated and they use arglist_t which
+   is deprecated.  */
+char *method_get_first_argument (struct objc_method *,
+				 arglist_t argframe, 
+				 const char **type);
+char *method_get_next_argument (arglist_t argframe, 
+				const char **type);
+char *method_get_nth_argument (struct objc_method *m, 
+			       arglist_t argframe,
+			       int arg, 
+			       const char **type);
+
+struct objc_struct_layout
+{
+  const char *original_type;
+  const char *type;
+  const char *prev_type;
+  unsigned int record_size;
+  unsigned int record_align;
+};
+
+void objc_layout_structure (const char *type,
+                            struct objc_struct_layout *layout);
+BOOL  objc_layout_structure_next_member (struct objc_struct_layout *layout);
+void objc_layout_finish_structure (struct objc_struct_layout *layout,
+                                   unsigned int *size,
+                                   unsigned int *align);
+void objc_layout_structure_get_info (struct objc_struct_layout *layout,
+                                     unsigned int *offset,
+                                     unsigned int *align,
+                                     const char **type);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __encoding_INCLUDE_GNU */
diff --git a/libobjc/objc/hash.h b/libobjc/objc/hash.h
new file mode 100644
index 000000000..8225a0992
--- /dev/null
+++ b/libobjc/objc/hash.h
@@ -0,0 +1,3 @@
+#include "objc.h"
+#include "deprecated/hash.h"
+
diff --git a/libobjc/objc/message.h b/libobjc/objc/message.h
new file mode 100644
index 000000000..8d03fefe4
--- /dev/null
+++ b/libobjc/objc/message.h
@@ -0,0 +1,141 @@
+/* GNU Objective C Runtime messaging declarations
+   Copyright (C) 1993, 1995, 1996, 2004, 2009, 
+   2010 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __objc_message_INCLUDE_GNU
+#define __objc_message_INCLUDE_GNU
+
+#include "objc.h"
+#include "objc-decls.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* This file includes declarations of the messaging functions and
+   types.  */
+
+/* Compatibility note: the messaging function is one area where the
+   GNU runtime and the Apple/NeXT runtime differ significantly.  If
+   you can, it is recommended that you use higher-level facilities
+   (provided by a Foundation library such as GNUstep Base) to perform
+   forwarding or other advanced messaging tricks.  */
+
+/* This function returns the IMP (C function implementing a method) to
+   use to invoke the method with selector 'op' of receiver 'receiver'.
+
+   This is the function used by the compiler when compiling method
+   invocations with the GNU runtime.  For example, the method call
+
+     result = [receiver method];
+
+   is compiled by the compiler (with the GNU runtime) into the
+   equivalent of:
+
+   {
+     IMP function = objc_msg_lookup (receiver, @selector (method));
+     result = function (receiver, @selector (method));
+   }
+
+   so, a call to objc_msg_lookup() determines the IMP (the C function
+   implementing the method) to call.  Then, the function is called.
+   If the method takes or returns different arguments, the compiler
+   will cast 'function' to the right type before invoking it, making
+   sure arguments and return value are handled correctly.
+
+   objc_msg_lookup() must always return a valid function that can be
+   called with the required method signature (otherwise the
+   compiler-generated code shown above could segfault).  If 'receiver'
+   is NULL, objc_msg_lookup() returns a C function that does nothing,
+   ignores all its arguments, and returns NULL (see nil_method.c).  If
+   'receiver' does not respond to the selector 'op', objc_msg_lookup()
+   will try to call +resolveClassMethod: or resolveInstanceMethod: as
+   appropriate, and if they return YES, it will try the lookup again
+   (+resolveClassMethod: and +resolveInstanceMethod: can thus install
+   dynamically methods as they are requested).  If
+   +resolveClassMethod: or +resolveInstanceMethod: are either not
+   available, or return NO, or return YES but 'receiver' still doesn't
+   implement the 'selector' after calling them, the runtime returns a
+   generic "forwarding" function that can be called with the required
+   method signature and which can process the method invocation
+   according to the forwarding API.  There are two runtime hooks that
+   allow Foundation libraries (such as GNUstep-Base) to return their
+   own forwarding function in preference to the runtime ones.  When
+   that happens, the Foundation library effectively takes complete
+   control of the forwarding process; any method invocation where the
+   selector is not implemented by the receiver will end up calling a
+   forwarding function chosen by the Foundation library.  */
+objc_EXPORT IMP objc_msg_lookup (id receiver, SEL op);
+
+/* Structure used when a message is send to a class's super class.
+   The compiler generates one of these structures and passes it to
+   objc_msg_lookup_super() when a [super method] call is compiled.  */
+
+/* In the traditional API, the super class field is called 'class' in
+   Objective-C and 'super_class' in Objective-C++.  In the new API
+   (objc/runtime.h) it is always called 'super_class'.  We detect the
+   "traditional API" by the fact that the objc/objc-api.h header
+   include guards are defined, which means objc/objc-api.h has been
+   included.  This works because objc/message.h does not exist in the
+   Traditional API and is only read because objc-api.h itself includes
+   it.  */
+#ifdef __objc_api_INCLUDE_GNU
+/* Traditional API.  */
+typedef struct objc_super
+{
+  id    self;       /* Id of the object sending the message. */
+#ifdef __cplusplus
+  Class super_class;
+#else
+  Class class;        /* Object's super class. */
+#endif
+} Super, *Super_t;
+#else
+/* Modern API.  */
+struct objc_super
+{
+  id    self;        /* The receiver of the message.  */
+  Class super_class; /* The superclass of the receiver.  */
+};
+#endif
+
+/* This is used by the compiler instead of objc_msg_lookup () when
+   compiling a call to 'super', such as [super method].  This requires
+   sending a message to super->self, but looking up the method as if
+   super->self was in class super->super_class.  */
+objc_EXPORT IMP objc_msg_lookup_super (struct objc_super *super, SEL sel);
+
+/* Hooks for method forwarding.  They make it easy to substitute the
+   built-in forwarding with one based on a library, such as ffi, that
+   implement closures, thereby avoiding gcc's __builtin_apply
+   problems.  __objc_msg_forward2's result will be preferred over that
+   of __objc_msg_forward if both are set and return non-NULL.  */   
+objc_EXPORT IMP (*__objc_msg_forward)(SEL);
+objc_EXPORT IMP (*__objc_msg_forward2)(id, SEL);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* not __objc_message_INCLUDE_GNU */
diff --git a/libobjc/objc/objc-api.h b/libobjc/objc/objc-api.h
new file mode 100644
index 000000000..521f79efb
--- /dev/null
+++ b/libobjc/objc/objc-api.h
@@ -0,0 +1,411 @@
+/* GNU Objective-C Runtime API - Traditional API
+   Copyright (C) 1993, 1995, 1996, 1997, 2001, 2002, 2003, 2004, 2005,
+   2007, 2009, 2010 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __objc_api_INCLUDE_GNU
+#define __objc_api_INCLUDE_GNU
+
+/* This file declares the "traditional" GNU Objective-C Runtime API.
+   It is the API supported by older versions of the GNU Objective-C
+   Runtime.  Include this file to use it.
+
+   This API is being replaced by the "modern" GNU Objective-C Runtime
+   API, which is declared in objc/runtime.h.  The "modern" API is very
+   similar to the API used by the modern Apple/NeXT runtime.
+
+   The last version of GCC supporting the traditional API is GCC 4.6.
+   This file will not exist in later versions of GCC.
+
+   Because the two APIs have some conflicting definitions (in
+   particular, Method and Category are defined differently) you should
+   include either objc/objc-api.h (to use the traditional GNU
+   Objective-C Runtime API) or objc/runtime.h (to use the modern GNU
+   Objective-C Runtime API), but not both.  */
+#ifdef __objc_runtime_INCLUDE_GNU
+# error You can not include both objc/objc-api.h and objc/runtime.h.  Include objc/objc-api.h for the traditional GNU Objective-C Runtime API and objc/runtime.h for the modern one.
+#endif
+
+/* TODO: A deprecation warning any time the file is included ? */
+
+#include "objc.h"
+#ifndef GNU_LIBOBJC_COMPILING_LIBOBJC_ITSELF
+# include "deprecated/hash.h"
+#endif
+#include "thr.h"
+#include "objc-decls.h"
+#include <stdio.h>
+#include <stdarg.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#include "deprecated/METHOD_NULL.h"
+
+/* Method descriptor returned by introspective Object methods.
+   This is really just the first part of the more complete objc_method
+   structure defined below and used internally by the runtime.  */
+struct objc_method_description
+{
+    SEL name;			/* this is a selector, not a string */
+    char *types;		/* type encoding */
+};
+
+/* The following are used in encode strings to describe the type of
+   Ivars and Methods.  */
+#define _C_ID       '@'
+#define _C_CLASS    '#'
+#define _C_SEL      ':'
+#define _C_CHR      'c'
+#define _C_UCHR     'C'
+#define _C_SHT      's'
+#define _C_USHT     'S'
+#define _C_INT      'i'
+#define _C_UINT     'I'
+#define _C_LNG      'l'
+#define _C_ULNG     'L'
+#define _C_LNG_LNG  'q'
+#define _C_ULNG_LNG 'Q'
+#define _C_FLT      'f'
+#define _C_DBL      'd'
+#define _C_LNG_DBL  'D'
+#define _C_BFLD     'b'
+#define _C_BOOL     'B'
+#define _C_VOID     'v'
+#define _C_UNDEF    '?'
+#define _C_PTR      '^'
+#define _C_CHARPTR  '*'
+#define _C_ARY_B    '['
+#define _C_ARY_E    ']'
+#define _C_UNION_B  '('
+#define _C_UNION_E  ')'
+#define _C_STRUCT_B '{'
+#define _C_STRUCT_E '}'
+#define _C_VECTOR   '!'
+#define _C_COMPLEX  'j'
+
+/* _C_ATOM is never generated by the compiler.  You can treat it as
+   equivalent to "*".  */
+#define _C_ATOM     '%'
+
+#include "deprecated/objc_error.h"
+
+#include "deprecated/struct_objc_static_instances.h"
+#include "deprecated/struct_objc_symtab.h"
+#include "deprecated/struct_objc_module.h"
+#include "deprecated/struct_objc_ivar.h"
+#include "deprecated/struct_objc_ivar_list.h"
+#include "deprecated/struct_objc_method.h"
+typedef struct objc_method Method, *Method_t;
+
+#include "deprecated/struct_objc_method_list.h"
+#include "deprecated/struct_objc_protocol_list.h"
+
+/*
+** This is used to assure consistent access to the info field of 
+** classes
+*/
+#ifndef HOST_BITS_PER_LONG
+#define HOST_BITS_PER_LONG  (sizeof(long)*8)
+#endif 
+
+#define __CLS_INFO(cls) ((cls)->info)
+#define __CLS_ISINFO(cls, mask) ((__CLS_INFO(cls)&mask)==mask)
+#define __CLS_SETINFO(cls, mask) (__CLS_INFO(cls) |= mask)
+
+/* The structure is of type MetaClass */
+#define _CLS_META 0x2L
+#define CLS_ISMETA(cls) ((cls)&&__CLS_ISINFO(cls, _CLS_META))
+
+
+/* The structure is of type Class */
+#define _CLS_CLASS 0x1L
+#define CLS_ISCLASS(cls) ((cls)&&__CLS_ISINFO(cls, _CLS_CLASS))
+
+/*
+** The class is initialized within the runtime.  This means that 
+** it has had correct super and sublinks assigned
+*/
+#define _CLS_RESOLV 0x8L
+#define CLS_ISRESOLV(cls) __CLS_ISINFO(cls, _CLS_RESOLV)
+#define CLS_SETRESOLV(cls) __CLS_SETINFO(cls, _CLS_RESOLV)
+
+/*
+** The class has been send a +initialize message or a such is not 
+** defined for this class
+*/
+#define _CLS_INITIALIZED 0x04L
+#define CLS_ISINITIALIZED(cls) __CLS_ISINFO(cls, _CLS_INITIALIZED)
+#define CLS_SETINITIALIZED(cls) __CLS_SETINFO(cls, _CLS_INITIALIZED)
+
+/*
+** The class number of this class.  This must be the same for both the 
+** class and its meta class object
+*/
+#define CLS_GETNUMBER(cls) (__CLS_INFO(cls) >> (HOST_BITS_PER_LONG/2))
+#define CLS_SETNUMBER(cls, num) \
+  ({ (cls)->info <<= (HOST_BITS_PER_LONG/2); \
+     (cls)->info >>= (HOST_BITS_PER_LONG/2); \
+     __CLS_SETINFO(cls, (((unsigned long)num) << (HOST_BITS_PER_LONG/2))); })
+
+#include "deprecated/struct_objc_category.h"
+
+typedef struct objc_category Category, *Category_t;
+
+/* We include message.h for compatibility with the old objc-api.h
+   which included the declarations currently in message.h.  The
+   Apple/NeXT runtime does not do this and only includes message.h in
+   objc-runtime.h.  It does not matter that much since most of the
+   definitions in message.h are runtime-specific.  */
+#include "message.h"
+
+/*
+** This is a hook which is called by objc_lookup_class and
+** objc_get_class if the runtime is not able to find the class.
+** This may e.g. try to load in the class using dynamic loading.
+** The function is guaranteed to be passed a non-NULL name string.
+** In the Modern API, this is replaced by
+** objc_setGetUnknownClassHandler ().
+*/
+objc_EXPORT Class (*_objc_lookup_class)(const char *name);
+
+/*
+** This is a hook which is called by __objc_exec_class every time a class
+** or a category is loaded into the runtime.  This may e.g. help a
+** dynamic loader determine the classes that have been loaded when
+** an object file is dynamically linked in.
+*/
+objc_EXPORT void (*_objc_load_callback)(Class _class, Category* category);
+
+#include "deprecated/objc_object_alloc.h"
+
+/*
+  Standard functions for memory allocation and disposal.  Users should
+  use these functions in their ObjC programs so that they work so that
+  they work properly with garbage collectors.
+*/
+objc_EXPORT void *
+objc_malloc(size_t size);
+
+/* FIXME: Shouldn't the following be called objc_malloc_atomic ?  The
+   GC function is GC_malloc_atomic() which makes sense.
+ */
+objc_EXPORT void *
+objc_atomic_malloc(size_t size);
+
+objc_EXPORT void *
+objc_realloc(void *mem, size_t size);
+
+objc_EXPORT void *
+objc_calloc(size_t nelem, size_t size);
+
+objc_EXPORT void
+objc_free(void *mem);
+
+#include "deprecated/objc_valloc.h"
+#include "deprecated/objc_malloc.h"
+
+#include "deprecated/objc_unexpected_exception.h"
+
+objc_EXPORT Method_t class_get_class_method(MetaClass _class, SEL aSel);
+
+objc_EXPORT Method_t class_get_instance_method(Class _class, SEL aSel);
+
+objc_EXPORT Class class_pose_as(Class impostor, Class superclass);
+
+objc_EXPORT Class objc_get_class(const char *name);
+
+objc_EXPORT Class objc_lookup_class(const char *name);
+
+objc_EXPORT Class objc_next_class(void **enum_state);
+
+objc_EXPORT const char *sel_get_name(SEL selector);
+
+objc_EXPORT const char *sel_get_type(SEL selector);
+
+objc_EXPORT SEL sel_get_uid(const char *name);
+
+objc_EXPORT SEL sel_get_any_uid(const char *name);
+
+objc_EXPORT SEL sel_get_any_typed_uid(const char *name);
+
+objc_EXPORT SEL sel_get_typed_uid(const char *name, const char*);
+
+objc_EXPORT SEL sel_register_name(const char *name);
+
+objc_EXPORT SEL sel_register_typed_name(const char *name, const char*type);
+
+
+objc_EXPORT BOOL sel_is_mapped (SEL aSel);
+
+extern id class_create_instance(Class _class);
+
+static inline const char *
+class_get_class_name(Class _class)
+{
+  return CLS_ISCLASS(_class)?_class->name:((_class==Nil)?"Nil":0);
+}
+
+static inline long
+class_get_instance_size(Class _class)
+{
+  return CLS_ISCLASS(_class)?_class->instance_size:0;
+}
+
+static inline MetaClass
+class_get_meta_class(Class _class)
+{
+  return CLS_ISCLASS(_class)?_class->class_pointer:Nil;
+}
+
+static inline Class
+class_get_super_class(Class _class)
+{
+  return CLS_ISCLASS(_class)?_class->super_class:Nil;
+}
+
+static inline int
+class_get_version(Class _class)
+{
+  return CLS_ISCLASS(_class)?_class->version:-1;
+}
+
+static inline BOOL
+class_is_class(Class _class)
+{
+  return CLS_ISCLASS(_class);
+}
+
+static inline BOOL
+class_is_meta_class(Class _class)
+{
+  return CLS_ISMETA(_class);
+}
+
+
+static inline void
+class_set_version(Class _class, long version)
+{
+  if (CLS_ISCLASS(_class))
+    _class->version = version;
+}
+
+static inline void *
+class_get_gc_object_type (Class _class)
+{
+  return CLS_ISCLASS(_class) ? _class->gc_object_type : NULL;
+}
+
+/* Mark the instance variable as innaccessible to the garbage collector */
+extern void class_ivar_set_gcinvisible (Class _class,
+					const char* ivarname,
+					BOOL gcInvisible);
+
+objc_EXPORT IMP method_get_imp(Method_t method);
+
+objc_EXPORT IMP get_imp (Class _class, SEL sel);
+
+/* object_copy used to take a single argument in the traditional GNU
+   Objective-C Runtime API (the one declared here), but takes 2 in the
+   modern API (implemented in the actual runtime).  Define the old
+   object_copy in terms of the new one.  */
+objc_EXPORT id object_copy (id object, size_t size);
+#define object_copy(X) (object_copy ((X), 0))
+
+objc_EXPORT id object_dispose(id object);
+
+static inline Class
+object_get_class(id object)
+{
+  return ((object!=nil)
+	  ? (CLS_ISCLASS(object->class_pointer)
+	     ? object->class_pointer
+	     : (CLS_ISMETA(object->class_pointer)
+		? (Class)object
+		: Nil))
+	  : Nil);
+}
+
+static inline const char *
+object_get_class_name(id object)
+{
+  return ((object!=nil)?(CLS_ISCLASS(object->class_pointer)
+                         ?object->class_pointer->name
+                         :((Class)object)->name)
+                       :"Nil");
+}
+
+static inline MetaClass
+object_get_meta_class(id object)
+{
+  return ((object!=nil)?(CLS_ISCLASS(object->class_pointer)
+                         ?object->class_pointer->class_pointer
+                         :(CLS_ISMETA(object->class_pointer)
+                           ?object->class_pointer
+                           :Nil))
+                       :Nil);
+}
+
+static inline Class
+object_get_super_class
+(id object)
+{
+  return ((object!=nil)?(CLS_ISCLASS(object->class_pointer)
+                         ?object->class_pointer->super_class
+                         :(CLS_ISMETA(object->class_pointer)
+                           ?((Class)object)->super_class
+                           :Nil))
+                       :Nil);
+}
+
+static inline BOOL
+object_is_class (id object)
+{
+  return ((object != nil)  &&  CLS_ISMETA (object->class_pointer));
+}
+ 
+static inline BOOL
+object_is_instance (id object)
+{
+  return ((object != nil)  &&  CLS_ISCLASS (object->class_pointer));
+}
+
+static inline BOOL
+object_is_meta_class (id object)
+{
+  return ((object != nil)
+	  &&  !object_is_instance (object)  
+	  &&  !object_is_class (object));
+}
+
+#include "deprecated/objc_get_uninstalled_dtable.h"
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* not __objc_api_INCLUDE_GNU */
+
+
+
diff --git a/libobjc/objc/objc-decls.h b/libobjc/objc/objc-decls.h
new file mode 100644
index 000000000..44df64397
--- /dev/null
+++ b/libobjc/objc/objc-decls.h
@@ -0,0 +1,46 @@
+/* GNU Objective-C Extern helpers for Win32.
+   Copyright (C) 2004, 2009, 2010 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+
+#ifndef __objc_decls_INCLUDE_GNU
+#define __objc_decls_INCLUDE_GNU
+
+#if defined (_WIN32) || defined (__WIN32__) || defined (WIN32)
+
+#  ifdef DLL_EXPORT /* defined by libtool (if required) */
+#    define objc_EXPORT 
+#    define objc_DECLARE
+#  else
+#    define objc_EXPORT  extern __declspec(dllimport)
+#    define objc_DECLARE extern __declspec(dllimport)
+#  endif
+
+#else
+
+#  define objc_EXPORT  extern
+#  define objc_DECLARE 
+
+#endif
+
+#endif /* __objc_decls_INCLUDE_GNU */
diff --git a/libobjc/objc/objc-exception.h b/libobjc/objc/objc-exception.h
new file mode 100644
index 000000000..4f3ee4fbf
--- /dev/null
+++ b/libobjc/objc/objc-exception.h
@@ -0,0 +1,109 @@
+/* GNU Objective C Runtime native exceptions
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Nicola Pero <nicola.pero@meta-innovation.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __objc_exception_INCLUDE_GNU
+#define __objc_exception_INCLUDE_GNU
+
+#include "objc.h"
+#include "objc-decls.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* 'objc_exception_throw' throws the exception 'exception', which is
+   an exception object.
+
+   Calls to 'objc_exception_throw' are automatically generated by the
+   compiler: an Objective-C "@throw exception;" statement gets
+   compiled into the equivalent of "objc_exception_throw
+   (exception);".
+
+   'objc_exception_throw' searches for a @catch() that can catch the
+   exception.  By default, @catch (MyClass object) will catch all
+   exception objects that are of class MyClass or of a subclass of
+   MyClass; if the exception object is 'nil', then the exception can
+   only be caught with a catch-all exception handler where no
+   exception class is specified (such as @catch(id object)).  This
+   behaviour can be customized by setting an 'objc_exception_matcher'
+   function (using objc_set_exception_matcher(), see below); if one is
+   set, it is used instead of the default one.
+
+   If the exception is uncaught (there is no @catch() to catch it),
+   the program aborts.  It is possible to customize this behaviour by
+   setting an 'objc_uncaught_exception_handler' function (using
+   objc_set_uncaught_exception_handler(), see below); if one is set,
+   it is executed before abort() is called.  An uncaught exception
+   handler is expected to never return.  */
+objc_EXPORT void objc_exception_throw (id exception);
+
+/* Compatibility note: the Apple/NeXT runtime seems to also have
+   objc_exception_rethrow(), objc_begin_catch() and objc_end_catch().
+   Currently the GNU runtime does not use them.  */
+
+/* The following functions allow customizing to a certain extent the
+   exception handling.  They are not thread safe and should be called
+   during the program initialization before threads are started.  They
+   are mostly reserved for "Foundation" libraries; in the case of
+   GNUstep, GNUstep Base may be using these functions to improve the
+   standard exception handling.  You probably shouldn't use these
+   functions unless you are writing your own Foundation library.  */
+
+/* Compatibility note: objc_set_exception_preprocessor() (available on
+   the Apple/NeXT runtime) is not available on the GNU runtime.  */
+
+/* An 'objc_exception_matcher' function is used to match an exception
+   to a @catch clause.  'catch_class' is the class of objects caught
+   by the @catch clause (for example, in "@catch (Object *o)", the
+   catch_class is Object).  It should return 1 if the exception should
+   be caught by a @catch with a catch_class argument, and 0 if
+   not.  */
+typedef int (*objc_exception_matcher)(Class catch_class, id exception);
+
+/* Sets a new exception matcher function, and returns the previous
+   exception matcher function.  This function is not safe to call in a
+   multi-threaded environment because other threads may be trying to
+   invoke the exception matcher while you change it!  */
+objc_EXPORT objc_exception_matcher
+objc_setExceptionMatcher (objc_exception_matcher new_matcher);
+
+
+/* An 'objc_uncaught_exception_handler' function is a function that
+   handles uncaught exceptions.  It should never return.  */
+typedef void (*objc_uncaught_exception_handler)(id exception);
+
+/* Sets a new uncaught exception handler function, and returns the
+   previous exception handler function.  This function is not safe to
+   call in a multi-threaded environment because other threads may be
+   trying to invoke the uncaught exception handler while you change
+   it.  */
+objc_EXPORT objc_uncaught_exception_handler
+objc_setUncaughtExceptionHandler (objc_uncaught_exception_handler new_handler);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* not __objc_exception_INCLUDE_GNU */
diff --git a/libobjc/objc/objc-list.h b/libobjc/objc/objc-list.h
new file mode 100644
index 000000000..b713a3c0e
--- /dev/null
+++ b/libobjc/objc/objc-list.h
@@ -0,0 +1,2 @@
+#include "deprecated/objc-list.h"
+
diff --git a/libobjc/objc/objc-sync.h b/libobjc/objc/objc-sync.h
new file mode 100644
index 000000000..04d1db653
--- /dev/null
+++ b/libobjc/objc/objc-sync.h
@@ -0,0 +1,69 @@
+/* GNU Objective C Runtime @synchronized implementation
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Nicola Pero <nicola.pero@meta-innovation.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __objc_sync_INCLUDE_GNU
+#define __objc_sync_INCLUDE_GNU
+
+#include "objc.h"
+#include "objc-decls.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* These functions are automatically called by @synchronized().  */
+
+/* 'objc_sync_enter' is automatically called when entering a
+   @synchronized() block.  It locks the recursive lock associated with
+   'object'.  If 'object' is nil, it does nothing.  It returns
+   OBJC_SYNC_SUCCESS on success; see the enumeration below for error
+   values.
+ 
+   Note that you should not rely on the behaviour when 'object' is nil
+   because it could change.  */
+objc_EXPORT int objc_sync_enter (id object);
+
+/* 'objc_sync_exit' is automatically called when exiting from a
+   @synchronized() block.  It unlocks the recursive lock associated
+   with 'object'.  If 'object' is nil, it does nothing.  It returns
+   OBJC_SYNC_SUCCESS on success; see the enumeration below for error
+   values.  */
+objc_EXPORT int objc_sync_exit (id object);
+
+/* All the possible return values for objc_sync_enter() and
+   objc_sync_exit().
+ */
+enum {
+  OBJC_SYNC_SUCCESS = 0,
+  OBJC_SYNC_NOT_OWNING_THREAD_ERROR = -1,
+  OBJC_SYNC_TIMED_OUT = -2,
+  OBJC_SYNC_NOT_INITIALIZED = -3
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* not __objc_sync_INCLUDE_GNU */
diff --git a/libobjc/objc/objc.h b/libobjc/objc/objc.h
new file mode 100644
index 000000000..ece0f8841
--- /dev/null
+++ b/libobjc/objc/objc.h
@@ -0,0 +1,169 @@
+/* Basic data types for Objective C.
+   Copyright (C) 1993, 1995, 1996, 2004, 2009, 
+   2010 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __objc_INCLUDE_GNU
+#define __objc_INCLUDE_GNU
+
+/* This file contains the definition of the basic types used by the
+   Objective-C language.  It needs to be included to do almost
+   anything with Objective-C.  */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stddef.h>
+
+/* objc-decls.h is included because deprecated/objc_msg_sendv.h needs
+   it.  When that goes away, the include of objc-decls.h should be
+   removed.  */
+#include "objc-decls.h"
+
+/* The current version of the GNU Objective-C Runtime library in
+   compressed ISO date format.  This should be updated any time a new
+   version is released with changes to the public API (there is no
+   need to update it if there were no API changes since the previous
+   release).  This macro is only defined starting with the GNU
+   Objective-C Runtime shipped with GCC 4.6.0.  If it is not defined,
+   it is either an older version of the runtime, or another runtime.  */
+#define __GNU_LIBOBJC__ 20100911
+
+/* Definition of the boolean type.
+
+   Compatibility note: the Apple/NeXT runtime defines a BOOL as a
+   'signed char'.  The GNU runtime uses an 'unsigned char'.
+
+   Important: this could change and we could switch to 'typedef bool
+   BOOL' in the future.  Do not depend on the type of BOOL.  */
+#undef BOOL
+typedef unsigned char  BOOL;
+
+#define YES   (BOOL)1
+#define NO    (BOOL)0
+
+/* The basic Objective-C types (SEL, Class, id) are defined as pointer
+   to opaque structures.  The details of the structures are private to
+   the runtime and may potentially change from one version to the
+   other.  */
+
+/* A SEL (selector) represents an abstract method (in the
+   object-oriented sense) and includes all the details of how to
+   invoke the method (which means its name, arguments and return
+   types) but provides no implementation of its own.  You can check
+   whether a class implements a selector or not, and if you have a
+   selector and know that the class implements it, you can use it to
+   call the method for an object in the class.  */
+typedef const struct objc_selector *SEL;
+#include "deprecated/struct_objc_selector.h"
+
+/* A Class is a class (in the object-oriented sense).  In Objective-C
+   there is the complication that each Class is an object itself, and
+   so belongs to a class too.  This class that a class belongs to is
+   called its 'meta class'.  */
+typedef struct objc_class *Class;
+#include "deprecated/MetaClass.h"
+#include "deprecated/struct_objc_class.h"
+
+/* An 'id' is an object of an unknown class.  The way the object data
+   is stored inside the object is private and what you see here is
+   only the beginning of the actual struct.  The first field is always
+   a pointer to the Class that the object belongs to.  */
+typedef struct objc_object
+{
+  /* 'class_pointer' is the Class that the object belongs to.  In case
+     of a Class object, this pointer points to the meta class.
+
+     Compatibility Note: The Apple/NeXT runtime calls this field
+     'isa'.  To access this field, use object_getClass() from
+     runtime.h, which is an inline function so does not add any
+     overhead and is also portable to other runtimes.  */
+  Class class_pointer;
+} *id;
+
+/* 'IMP' is a C function that implements a method.  When retrieving
+   the implementation of a method from the runtime, this is the type
+   of the pointer returned.  The idea of the definition of IMP is to
+   represent a 'pointer to a general function taking an id, a SEL,
+   followed by other unspecified arguments'.  You must always cast an
+   IMP to a pointer to a function taking the appropriate, specific
+   types for that function, before calling it - to make sure the
+   appropriate arguments are passed to it.  The code generated by the
+   compiler to perform method calls automatically does this cast
+   inside method calls.  */
+typedef id (*IMP)(id, SEL, ...); 
+
+/* 'nil' is the null object.  Messages to nil do nothing and always
+   return 0.  */
+#define nil (id)0
+
+/* 'Nil' is the null class.  Since classes are objects too, this is
+   actually the same object as 'nil' (and behaves in the same way),
+   but it has a type of Class, so it is good to use it instead of
+   'nil' if you are comparing a Class object to nil as it enables the
+   compiler to do some type-checking.  */
+#define Nil (Class)0
+
+#include "deprecated/STR.h"
+
+/* TODO: Move the 'Protocol' declaration into objc/runtime.h.  A
+   Protocol is simply an object, not a basic Objective-C type.  The
+   Apple runtime defines Protocol in objc/runtime.h too, so it's good
+   to move it there for API compatibility.  */
+
+/* A 'Protocol' is a formally defined list of selectors (normally
+   created using the @protocol Objective-C syntax).  It is mostly used
+   at compile-time to check that classes implement all the methods
+   that they are supposed to.  Protocols are also available in the
+   runtime system as Protocol objects.  */
+#ifndef __OBJC__
+  /* Once we stop including the deprecated struct_objc_protocol.h
+     there is no reason to even define a 'struct objc_protocol'.  As
+     all the structure details will be hidden, a Protocol basically is
+     simply an object (as it should be).  */
+  /* typedef struct objc_object Protocol; */
+  #include "deprecated/struct_objc_protocol.h"
+#else /* __OBJC__ */
+  @class Protocol;
+#endif 
+
+/* Deprecated include - here temporarily, for backwards-compatibility
+   as reval_t, apply_t, arglist_t and objc_msg_lookup() used to be
+   defined here.  objc_msg_lookup() is now defined in message.h,
+   included by objc-api.h or runtime.h.  */
+#include "deprecated/objc_msg_sendv.h"
+
+/* Compatibility note: the Apple/NeXT runtime defines sel_getName(),
+   sel_registerName(), object_getClassName(), object_getIndexedIvars()
+   in this file while the GNU runtime defines them in runtime.h.
+
+   The reason the GNU runtime does not define them here is that they
+   are not basic Objective-C types (defined in this file), but are
+   part of the runtime API (defined in runtime.h).  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* not __objc_INCLUDE_GNU */
diff --git a/libobjc/objc/runtime.h b/libobjc/objc/runtime.h
new file mode 100644
index 000000000..6e1f1ec36
--- /dev/null
+++ b/libobjc/objc/runtime.h
@@ -0,0 +1,1153 @@
+/* GNU Objective-C Runtime API - Modern API
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Nicola Pero <nicola.pero@meta-innovation.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __objc_runtime_INCLUDE_GNU
+#define __objc_runtime_INCLUDE_GNU
+
+/*
+  This file declares the "modern" GNU Objective-C Runtime API.
+  Include this file to use it.
+
+  This API is replacing the "traditional" GNU Objective-C Runtime API
+  (declared in objc/objc-api.h) which is the one supported by older
+  versions of the GNU Objective-C Runtime.  The "modern" API is very
+  similar to the API used by the modern Apple/NeXT runtime.
+
+  Because the two APIs have some conflicting definitions (in
+  particular, Method and Category are defined differently) you should
+  include either objc/objc-api.h (to use the traditional GNU
+  Objective-C Runtime API) or objc/runtime.h (to use the modern GNU
+  Objective-C Runtime API), but not both.
+*/
+#ifdef __objc_api_INCLUDE_GNU
+# error You can not include both objc/objc-api.h and objc/runtime.h.  Include objc/objc-api.h for the traditional GNU Objective-C Runtime API and objc/runtime.h for the modern one.
+#endif
+
+#include "objc.h"
+#include "objc-decls.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/* An 'Ivar' represents an instance variable.  It holds information
+   about the name, type and offset of the instance variable.  */
+typedef struct objc_ivar *Ivar;
+
+/* A 'Property' represents a property.  It holds information about the
+   name of the property, and its attributes.
+
+   Compatibility Note: the Apple/NeXT runtime defines this as
+   objc_property_t, so we define it that way as well, but obviously
+   Property is the right name.  */
+typedef struct objc_property *Property;
+typedef struct objc_property *objc_property_t;
+
+/* A 'Method' represents a method.  It holds information about the
+   name, types and the IMP of the method.  */
+typedef struct objc_method *Method;
+
+/* A 'Category' represents a category.  It holds information about the
+   name of the category, the class it belongs to, and the methods,
+   protocols and such like provided by the category.  */
+typedef struct objc_category *Category;
+
+/* 'Protocol' is defined in objc/objc.h (which is included by this
+   file).  */
+
+/* Method descriptor returned by introspective Object methods.  At the
+   moment, this is really just the first part of the more complete
+   objc_method structure used internally by the runtime.  (PS: In the
+   GNU Objective-C Runtime, selectors already include a type, so an
+   objc_method_description does not add much to a SEL.  But in other
+   runtimes, that is not the case, which is why
+   objc_method_description exists).  */
+struct objc_method_description
+{
+  SEL name;      /* Selector (name and signature) */
+  char *types;   /* Type encoding */
+};
+
+/* The following are used in encode strings to describe the type of
+   Ivars and Methods.  */
+#define _C_ID       '@'
+#define _C_CLASS    '#'
+#define _C_SEL      ':'
+#define _C_CHR      'c'
+#define _C_UCHR     'C'
+#define _C_SHT      's'
+#define _C_USHT     'S'
+#define _C_INT      'i'
+#define _C_UINT     'I'
+#define _C_LNG      'l'
+#define _C_ULNG     'L'
+#define _C_LNG_LNG  'q'
+#define _C_ULNG_LNG 'Q'
+#define _C_FLT      'f'
+#define _C_DBL      'd'
+#define _C_LNG_DBL  'D'
+#define _C_BFLD     'b'
+#define _C_BOOL     'B'
+#define _C_VOID     'v'
+#define _C_UNDEF    '?'
+#define _C_PTR      '^'
+#define _C_CHARPTR  '*'
+#define _C_ARY_B    '['
+#define _C_ARY_E    ']'
+#define _C_UNION_B  '('
+#define _C_UNION_E  ')'
+#define _C_STRUCT_B '{'
+#define _C_STRUCT_E '}'
+#define _C_VECTOR   '!'
+#define _C_COMPLEX  'j'
+
+/* _C_ATOM is never generated by the compiler.  You can treat it as
+   equivalent to "*".  */
+#define _C_ATOM     '%'
+
+/* The following are used in encode strings to describe some
+   qualifiers of method and ivar types.  */
+#define _C_CONST	'r'
+#define _C_IN		'n'
+#define _C_INOUT	'N'
+#define _C_OUT      	'o'
+#define _C_BYCOPY	'O'
+#define _C_BYREF	'R'
+#define _C_ONEWAY	'V'
+#define _C_GCINVISIBLE	'|'
+
+/* The same when used as flags.  */
+#define _F_CONST	0x01
+#define _F_IN		0x01
+#define _F_OUT		0x02
+#define _F_INOUT	0x03
+#define _F_BYCOPY	0x04
+#define _F_BYREF	0x08
+#define _F_ONEWAY	0x10
+#define _F_GCINVISIBLE	0x20
+
+
+/** Implementation: the following functions are defined inline.  */
+
+/* Return the class of 'object', or Nil if the object is nil.  If
+   'object' is a class, the meta class is returned; if 'object' is a
+   meta class, the root meta class is returned (note that this is
+   different from the traditional GNU Objective-C Runtime API function
+   object_get_class(), which for a meta class would return the meta
+   class itself).  This function is inline, so it is really fast and
+   should be used instead of accessing object->class_pointer
+   directly.  */
+static inline Class
+object_getClass (id object)
+{
+  if (object != nil)
+    return object->class_pointer;
+  else
+    return Nil;
+}
+
+
+/** Implementation: the following functions are in selector.c.  */
+
+/* Return the name of a given selector.  If 'selector' is NULL, return
+   "<null selector>".  */
+objc_EXPORT const char *sel_getName (SEL selector);
+
+/* Return the type of a given selector.  Return NULL if selector is
+   NULL.
+
+   Compatibility Note: the Apple/NeXT runtime has untyped selectors,
+   so it does not have this function, which is specific to the GNU
+   Runtime.  */
+objc_EXPORT const char *sel_getTypeEncoding (SEL selector);
+
+/* This is the same as sel_registerName ().  Please use
+   sel_registerName () instead.  */
+objc_EXPORT SEL sel_getUid (const char *name);
+
+/* Register a selector with a given name (but unspecified types).  If
+   you know the types, it is better to call sel_registerTypedName().
+   If a selector with this name and no types already exists, it is
+   returned.  Note that this function should really be called
+   'objc_registerSelector'.  Return NULL if 'name' is NULL.  */
+objc_EXPORT SEL sel_registerName (const char *name);
+
+/* Register a selector with a given name and types.  If a selector
+   with this name and types already exists, it is returned.  Note that
+   this function should really be called 'objc_registerTypedSelector',
+   and it's called 'sel_registerTypedName' only for consistency with
+   'sel_registerName'.  Return NULL if 'name' is NULL.
+
+   Compatibility Note: the Apple/NeXT runtime has untyped selectors,
+   so it does not have this function, which is specific to the GNU
+   Runtime.  */
+objc_EXPORT SEL sel_registerTypedName (const char *name, const char *type);
+
+/* Return YES if first_selector is the same as second_selector, and NO
+   if not.  */
+objc_EXPORT BOOL sel_isEqual (SEL first_selector, SEL second_selector);
+
+/* Return all the selectors with the supplied name.  In the GNU
+   runtime, selectors are typed and there may be multiple selectors
+   with the same name but a different type.  The return value of the
+   function is a pointer to an area, allocated with malloc(), that
+   contains all the selectors with the supplier name known to the
+   runtime.  The list is terminated by NULL.  Optionally, if you pass
+   a non-NULL 'numberOfReturnedSelectors' pointer, the unsigned int
+   that it points to will be filled with the number of selectors
+   returned.
+
+   Compatibility Note: the Apple/NeXT runtime has untyped selectors,
+   so it does not have this function, which is specific to the GNU
+   Runtime.  */
+objc_EXPORT SEL * sel_copyTypedSelectorList (const char *name,
+					     unsigned int *numberOfReturnedSelectors);
+
+/* Return a selector with name 'name' and a non-zero type encoding, if
+   there is a single selector with a type, and with that name,
+   registered with the runtime.  If there is no such selector, or if
+   there are multiple selectors with the same name but conflicting
+   types, NULL is returned.  Return NULL if 'name' is NULL.
+
+   This is useful if you have the name of the selector, and would
+   really like to get a selector for it that includes the type
+   encoding.  Unfortunately, if the program contains multiple selector
+   with the same name but different types, sel_getTypedSelector can
+   not possibly know which one you need, and so will return NULL.
+
+   Compatibility Note: the Apple/NeXT runtime has untyped selectors,
+   so it does not have this function, which is specific to the GNU
+   Runtime.  */
+objc_EXPORT SEL sel_getTypedSelector (const char *name);
+
+
+/** Implementation: the following functions are in objects.c.  */
+
+/* Create an instance of class 'class_', adding extraBytes to the size
+   of the returned object.  This method allocates the appropriate
+   amount of memory for the instance, initializes it to zero, then
+   calls all the C++ constructors on appropriate C++ instance
+   variables of the instance (if any) (TODO: The C++ constructors bit
+   is not implemented yet).  */
+objc_EXPORT id class_createInstance (Class class_, size_t extraBytes);
+
+/* Copy an object and return the copy.  extraBytes should be identical
+   to the extraBytes parameter that was passed when creating the
+   original object.  */
+objc_EXPORT id object_copy (id object, size_t extraBytes);
+
+/* Dispose of an object.  This method calls the appropriate C++
+   destructors on appropriate C++ instance variables of the instance
+   (if any) (TODO: This is not implemented yet), then frees the memory
+   for the instance.  */
+objc_EXPORT id object_dispose (id object);
+
+/* Return the name of the class of 'object'.  If 'object' is 'nil',
+   returns "Nil".  */
+objc_EXPORT const char * object_getClassName (id object);
+
+/* Change the class of object to be class_.  Return the previous class
+   of object.  This is currently not really thread-safe.  */
+objc_EXPORT Class object_setClass (id object, Class class_);
+
+
+/** Implementation: the following functions are in ivars.c.  */
+
+/* Return an instance variable given the class and the instance
+   variable name.  This is an expensive function to call, so try to
+   reuse the returned Ivar if you can.  */
+objc_EXPORT Ivar class_getInstanceVariable (Class class_, const char *name);
+
+/* Return a class variable given the class and the class variable
+   name.  This is an expensive function to call, so try to reuse the
+   returned Ivar if you can.  
+   
+   This function always returns NULL since class variables are
+   currently unavailable in Objective-C.  */
+objc_EXPORT Ivar class_getClassVariable (Class class_, const char *name);
+
+/* If the object was created in class_createInstance() with some
+   extraBytes, returns a pointer to them.  If it was not, then the
+   returned pointer may make no sense.  */
+objc_EXPORT void * object_getIndexedIvars (id object);
+
+/* Get the value of an instance variable of type 'id'.  The function
+   returns the instance variable.  To get the value of the instance
+   variable, you should pass as 'returnValue' a pointer to an 'id';
+   the value will be copied there.  Note that 'returnValue' is really
+   a 'void *', not a 'void **'.  This function really works only with
+   instance variables of type 'id'; for other types of instance
+   variables, access directly the data at (char *)object +
+   ivar_getOffset (ivar).  */
+objc_EXPORT Ivar object_getInstanceVariable (id object, const char *name, void **returnValue);
+
+/* Set the value of an instance variable.  The value to set is passed
+   in 'newValue' (which really is an 'id', not a 'void *').  The
+   function returns the instance variable.  This function really works
+   only with instance variables of type 'id'; for other types of
+   instance variables, access directly the data at (char *)object +
+   ivar_getOffset (ivar).  */
+objc_EXPORT Ivar object_setInstanceVariable (id object, const char *name, void *newValue);
+
+/* Get the value of an instance variable of type 'id' of the object
+   'object'.  This is faster than object_getInstanceVariable if you
+   already have the instance variable because it avoids the expensive
+   call to class_getInstanceVariable that is done by
+   object_getInstanceVariable.  */
+objc_EXPORT id object_getIvar (id object, Ivar variable);
+
+/* Set the value of an instance variable of type 'id' of the object
+   'object'.  This is faster than object_setInstanceVariable if you
+   already have the instance variable because it avoids the expensive
+   call to class_getInstanceVariable that is done by
+   object_setInstanceVariable.  */
+objc_EXPORT void object_setIvar (id object, Ivar variable, id value);
+
+/* Return the name of the instance variable.  Return NULL if
+   'variable' is NULL.  */
+objc_EXPORT const char * ivar_getName (Ivar variable);
+
+/* Return the offset of the instance variable from the start of the
+   object data.  Return 0 if 'variable' is NULL.  */
+objc_EXPORT ptrdiff_t ivar_getOffset (Ivar variable);
+
+/* Return the type encoding of the variable.  Return NULL if
+   'variable' is NULL.  */
+objc_EXPORT const char * ivar_getTypeEncoding (Ivar variable);
+
+/* Return all the instance variables of the class.  The return value
+   of the function is a pointer to an area, allocated with malloc(),
+   that contains all the instance variables of the class.  It does not
+   include instance variables of superclasses.  The list is terminated
+   by NULL.  Optionally, if you pass a non-NULL
+   'numberOfReturnedIvars' pointer, the unsigned int that it points to
+   will be filled with the number of instance variables returned.
+   Return NULL for classes still in construction (ie, allocated using
+   objc_allocatedClassPair() but not yet registered with the runtime
+   using objc_registerClassPair()).  */
+objc_EXPORT Ivar * class_copyIvarList (Class class_, unsigned int *numberOfReturnedIvars);
+
+/* Add an instance variable with name 'ivar_name' to class 'class_',
+   where 'class_' is a class in construction that has been created
+   using objc_allocateClassPair() and has not been registered with the
+   runtime using objc_registerClassPair() yet.  You can not add
+   instance variables to classes already registered with the runtime.
+   'size' is the size of the instance variable, 'log_2_of_alignment'
+   the alignment as a power of 2 (so 0 means alignment to a 1 byte
+   boundary, 1 means alignment to a 2 byte boundary, 2 means alignment
+   to a 4 byte boundary, etc), and 'type' the type encoding of the
+   variable type.  You can use sizeof(), log2(__alignof__()) and
+   @encode() to determine the right 'size', 'alignment' and 'type' for
+   your instance variable.  For example, to add an instance variable
+   name "my_variable" and of type 'id', you can use:
+
+   class_addIvar (class, "my_variable", sizeof (id), log2 ( __alignof__ (id)),
+                  @encode (id));
+
+   Return YES if the variable was added, and NO if not.  In
+   particular, return NO if 'class_' is Nil, or a meta-class or a
+   class not in construction.  Return Nil also if 'ivar_name' or
+   'type' is NULL, or 'size' is 0.
+ */
+objc_EXPORT BOOL class_addIvar (Class class_, const char * ivar_name, size_t size,
+				unsigned char log_2_of_alignment, const char *type);
+
+/* Return the name of the property.  Return NULL if 'property' is
+   NULL.  */
+objc_EXPORT const char * property_getName (Property property);
+
+/* Return the attributes of the property as a string.  Return NULL if
+   'property' is NULL.  */
+objc_EXPORT const char * property_getAttributes (Property property);
+
+/* Return the property with name 'propertyName' of the class 'class_'.
+   This function returns NULL if the required property can not be
+   found.  Return NULL if 'class_' or 'propertyName' is NULL.
+
+   Note that the traditional ABI does not store the list of properties
+   of a class in a compiled module, so the traditional ABI will always
+   return NULL.  */
+objc_EXPORT Property class_getProperty (Class class_, const char *propertyName);
+
+/* Return all the properties of the class.  The return value
+   of the function is a pointer to an area, allocated with malloc(),
+   that contains all the properties of the class.  It does not
+   include properties of superclasses.  The list is terminated
+   by NULL.  Optionally, if you pass a non-NULL
+   'numberOfReturnedIvars' pointer, the unsigned int that it points to
+   will be filled with the number of properties returned.
+
+   Note that the traditional ABI does not store the list of properties
+   of a class in a compiled module, so the traditional ABI will always
+   return an empty list.  */
+objc_EXPORT Property * class_copyPropertyList 
+(Class class_, unsigned int *numberOfReturnedProperties);
+
+/* Return the ivar layout for class 'class_'.
+
+   At the moment this function always returns NULL.  */
+objc_EXPORT const char * class_getIvarLayout (Class class_);
+
+/* Return the weak ivar layout for class 'class_'.
+
+   At the moment this function always returns NULL.  */
+objc_EXPORT const char * class_getWeakIvarLayout (Class class_);
+
+/* Set the ivar layout for class 'class_'.
+
+   At the moment, this function does nothing.  */
+objc_EXPORT void class_setIvarLayout (Class class_, const char *layout);
+
+/* Set the weak ivar layout for class 'class_'.
+
+   At the moment, this function does nothing.  With the GNU runtime,
+   you should use class_ivar_set_gcinvisible () to hide variables from
+   the Garbage Collector.  */
+objc_EXPORT void class_setWeakIvarLayout (Class class_, const char *layout);
+
+
+/** Implementation: the following functions are in class.c.  */
+
+/* Compatibility Note: The Apple/NeXT runtime does not have
+   objc_get_unknown_class_handler and
+   objc_setGetUnknownClassHandler().  They provide functionality that
+   the traditional GNU Objective-C Runtime API used to provide via the
+   _objc_lookup_class hook.  */
+
+/* An 'objc_get_unknown_class_handler' function is used by
+   objc_getClass() to get a class that is currently unknown to the
+   compiler.  You could use it for example to have the class loaded by
+   dynamically loading a library.  'class_name' is the name of the
+   class.  The function should return the Class object if it manages to
+   load the class, and Nil if not.  */
+typedef Class (*objc_get_unknown_class_handler)(const char *class_name);
+
+/* Sets a new handler function for getting unknown classes (to be used
+   by objc_getClass () and related), and returns the previous one.
+   This function is not safe to call in a multi-threaded environment
+   because other threads may be trying to use the get unknown class
+   handler while you change it!  */
+objc_EXPORT 
+objc_get_unknown_class_handler
+objc_setGetUnknownClassHandler (objc_get_unknown_class_handler new_handler);
+
+/* Return the class with name 'name', if it is already registered with
+   the runtime.  If it is not registered, and
+   objc_setGetUnknownClassHandler() has been called to set a handler
+   for unknown classes, the handler is called to give it a chance to
+   load the class in some other way.  If the class is not known to the
+   runtime and the handler is not set or returns Nil, objc_getClass()
+   returns Nil.  */
+objc_EXPORT Class objc_getClass (const char *name);
+
+/* Return the class with name 'name', if it is already registered with
+   the runtime.  Return Nil if not.  This function does not call the
+   objc_get_unknown_class_handler function if the class is not
+   found.  */
+objc_EXPORT Class objc_lookUpClass (const char *name);
+
+/* Return the meta class associated to the class with name 'name', if
+   it is already registered with the runtime.  First, it finds the
+   class using objc_getClass().  Then, it returns the associated meta
+   class.  If the class could not be found using objc_getClass(),
+   returns Nil.  */
+objc_EXPORT Class objc_getMetaClass (const char *name);
+
+/* This is identical to objc_getClass(), but if the class is not found,
+   it aborts the process instead of returning Nil.  */
+objc_EXPORT Class objc_getRequiredClass (const char *name);
+
+/* If 'returnValue' is NULL, 'objc_getClassList' returns the number of
+   classes currently registered with the runtime.  If 'returnValue' is
+   not NULL, it should be a (Class *) pointer to an area of memory
+   which can contain up to 'maxNumberOfClassesToReturn' Class records.
+   'objc_getClassList' will fill the area pointed to by 'returnValue'
+   with all the Classes registered with the runtime (or up to
+   maxNumberOfClassesToReturn if there are more than
+   maxNumberOfClassesToReturn).  The function return value is the
+   number of classes actually returned in 'returnValue'.  */
+objc_EXPORT int objc_getClassList (Class *returnValue, int maxNumberOfClassesToReturn); 
+
+/* Compatibility Note: The Apple/NeXT runtime also has
+
+    Class objc_getFutureClass (const char *name);
+    void objc_setFutureClass (Class class_, const char *name);
+
+   the documentation is unclear on what they are supposed to do, and
+   the GNU Objective-C Runtime currently does not provide them.  */
+
+/* Return the name of the class 'class_', or the string "nil" if the
+   class_ is Nil.  */
+objc_EXPORT const char * class_getName (Class class_);
+
+/* Return YES if 'class_' is a meta class, and NO if not.  If 'class_'
+   is Nil, return NO.  */
+objc_EXPORT BOOL class_isMetaClass (Class class_);
+
+/* Return the superclass of 'class_'.  If 'class_' is Nil, or it is a
+   root class, return Nil.  If 'class_' is a class being constructed,
+   that is, a class returned by objc_allocateClassPair() but before it
+   has been registered with the runtime using
+   objc_registerClassPair(), return Nil.  */
+objc_EXPORT Class class_getSuperclass (Class class_);
+
+/* Return the 'version' number of the class, which is an integer that
+   can be used to track changes in the class API, methods and
+   variables.  If class_ is Nil, return 0.  If class_ is not Nil, the
+   version is 0 unless class_setVersion() has been called to set a
+   different one.
+
+   Please note that internally the version is a long, but the API only
+   allows you to set and retrieve int values.  */
+objc_EXPORT int class_getVersion (Class class_);
+
+/* Set the 'version' number of the class, which is an integer that can
+   be used to track changes in the class API, methods and variables.
+   If 'class_' is Nil, does nothing.
+
+   This is typically used internally by "Foundation" libraries such as
+   GNUstep Base to support serialization / deserialization of objects
+   that work across changes in the classes.  If you are using such a
+   library, you probably want to use their versioning API, which may
+   be based on this one, but is integrated with the rest of the
+   library.
+
+   Please note that internally the version is a long, but the API only
+   allows you to set and retrieve int values.  */
+objc_EXPORT void class_setVersion (Class class_, int version);
+
+/* Return the size in bytes (a byte is the size of a char) of an
+   instance of the class.  If class_ is Nil, return 0; else it return
+   a non-zero number (since the 'isa' instance variable is required
+   for all classes).  */
+objc_EXPORT size_t class_getInstanceSize (Class class_);
+
+/* Change the implementation of the method.  It also searches all
+   classes for any class implementing the method, and replaces the
+   existing implementation with the new one.  For that to work,
+   'method' must be a method returned by class_getInstanceMethod() or
+   class_getClassMethod() as the matching is done by comparing the
+   pointers; in that case, only the implementation in the class is
+   modified.  Return the previous implementation that has been
+   replaced.  If method or implementation is NULL, do nothing and
+   return NULL.  */
+objc_EXPORT IMP
+method_setImplementation (Method method, IMP implementation);
+
+/* Swap the implementation of two methods in a single, atomic
+   operation.  This is equivalent to getting the implementation of
+   each method and then calling method_setImplementation() on the
+   other one.  For this to work, the two methods must have been
+   returned by class_getInstanceMethod() or class_getClassMethod().
+   If 'method_a' or 'method_b' is NULL, do nothing.  */
+objc_EXPORT void
+method_exchangeImplementations (Method method_a, Method method_b);
+
+/* Create a new class/meta-class pair.  This function is called to
+   create a new class at runtime.  The class is created with
+   superclass 'superclass' (use 'Nil' to create a new root class) and
+   name 'class_name'.  'extraBytes' can be used to specify some extra
+   space for indexed variables to be added at the end of the class and
+   meta-class objects (it is recommended that you set extraBytes to
+   0).  Once you have created the class, it is not usable yet.  You
+   need to add any instance variables (by using class_addIvar()), any
+   instance methods (by using class_addMethod()) and any class methods
+   (by using class_addMethod() on the meta-class, as in
+   class_addMethod (object_getClass (class), method)) that are
+   required, and then you need to call objc_registerClassPair() to
+   activate the class.  If you need to create a hierarchy of classes,
+   you need to create and register them one at a time.  You can not
+   create a new class using another class in construction as
+   superclass.  Return Nil if 'class-name' is NULL or if a class with
+   that name already exists or 'superclass' is a class still in
+   construction.
+
+   Implementation Note: in the GNU runtime, allocating a class pair
+   only creates the structures for the class pair, but does not
+   register anything with the runtime.  The class is registered with
+   the runtime only when objc_registerClassPair() is called.  In
+   particular, if a class is in construction, objc_getClass() will not
+   find it, the superclass will not know about it,
+   class_getSuperclass() will return Nil and another thread may
+   allocate a class pair with the same name; the conflict will only be
+   detected when the classes are registered with the runtime.
+ */
+objc_EXPORT Class
+objc_allocateClassPair (Class super_class, const char *class_name, 
+			size_t extraBytes);
+
+/* Register a class pair that was created with
+   objc_allocateClassPair().  After you register a class, you can no
+   longer make changes to its instance variables, but you can start
+   creating instances of it.  Do nothing if 'class_' is NULL or if it
+   is not a class allocated by objc_allocateClassPair() and still in
+   construction.  */
+objc_EXPORT void
+objc_registerClassPair (Class class_);
+
+/* Dispose of a class pair created using objc_allocateClassPair().
+   Call this function if you started creating a new class with
+   objc_allocateClassPair() but then want to abort the process.  You
+   should not access 'class_' after calling this method.  Note that if
+   'class_' has already been registered with the runtime via
+   objc_registerClassPair(), this function does nothing; you can only
+   dispose of class pairs that are still being constructed.  Do
+   nothing if class is 'Nil' or if 'class_' is not a class being
+   constructed.  */
+objc_EXPORT void
+objc_disposeClassPair (Class class_);
+
+/* Compatibility Note: The Apple/NeXT runtime has the function
+   objc_duplicateClass () but it's undocumented.  The GNU runtime does
+   not have it.  */
+
+
+/** Implementation: the following functions are in sendmsg.c.  */
+
+/* Return the instance method with selector 'selector' of class
+   'class_', or NULL if the class (or one of its superclasses) does
+   not implement the method.  Return NULL if class_ is Nil or selector
+   is NULL.  Calling this function may trigger a call to
+   +resolveInstanceMethod:, but does not return a forwarding
+   function.  */
+objc_EXPORT Method class_getInstanceMethod (Class class_, SEL selector);
+
+/* Return the class method with selector 'selector' of class 'class_',
+   or NULL if the class (or one of its superclasses) does not
+   implement the method.  Return NULL if class_ is Nil or selector is
+   NULL.  Calling this function may trigger a call to
+   +resolveClassMethod:, but does not return a forwarding
+   function.  */
+objc_EXPORT Method class_getClassMethod (Class class_, SEL selector);
+
+/* Return the IMP (pointer to the function implementing a method) for
+   the instance method with selector 'selector' in class 'class_'.
+   This is the same routine that is used while messaging, and should
+   be very fast.  Note that you most likely would need to cast the
+   return function pointer to a function pointer with the appropriate
+   arguments and return type before calling it.  To get a class
+   method, you can pass the meta-class as the class_ argument (ie, use
+   class_getMethodImplementation (object_getClass (class_),
+   selector)).  Return NULL if class_ is Nil or selector is NULL.
+   This function first looks for an existing method; if it is not
+   found, it calls +resolveClassMethod: or +resolveInstanceMethod:
+   (depending on whether a class or instance method is being looked
+   up) if it is implemented.  If the method returns YES, then it tries
+   the look up again (the assumption being that +resolveClassMethod:
+   or resolveInstanceMethod: will add the method using
+   class_addMethod()).  If it is still not found, it returns a
+   forwarding function.  */
+objc_EXPORT IMP class_getMethodImplementation (Class class_, SEL selector);
+
+/* Compatibility Note: the Apple/NeXT runtime has the function
+   class_getMethodImplementation_stret () which currently does not
+   exist on the GNU runtime because the messaging implementation is
+   different.  */
+
+/* Return YES if class 'class_' has an instance method implementing
+   selector 'selector', and NO if not.  Return NO if class_ is Nil or
+   selector is NULL.  If you need to check a class method, use the
+   meta-class as the class_ argument (ie, use class_respondsToSelector
+   (object_getClass (class_), selector)).  */
+objc_EXPORT BOOL class_respondsToSelector (Class class_, SEL selector);
+
+/* Add a method to a class.  Use this function to add a new method to
+   a class (potentially overriding a method with the same selector in
+   the superclass); if you want to modify an existing method, use
+   method_setImplementation() instead (or class_replaceMethod ()).
+   This method adds an instance method to 'class_'; to add a class
+   method, get the meta class first, then add the method to the meta
+   class, that is, use
+
+   class_addMethod (object_getClass (class_), selector,
+   implementation, type);
+
+   Return YES if the method was added, and NO if not.  Do nothing if
+   one of the arguments is NULL.  */
+objc_EXPORT BOOL class_addMethod (Class class_, SEL selector, IMP implementation,
+				  const char *method_types);
+
+/* Replace a method in a class.  If the class already have a method
+   with this 'selector', find it and use method_setImplementation() to
+   replace the implementation with 'implementation' (method_types is
+   ignored in that case).  If the class does not already have a method
+   with this 'selector', call 'class_addMethod() to add it.
+
+   Return the previous implementation of the method, or NULL if none
+   was found.  Return NULL if any of the arguments is NULL.  */
+objc_EXPORT IMP class_replaceMethod (Class class_, SEL selector, IMP implementation,
+				     const char *method_types);
+
+
+/** Implementation: the following functions are in methods.c.  */
+
+/* Return the selector for method 'method'.  Return NULL if 'method'
+   is NULL.
+
+   This function is misnamed; it should be called
+   'method_getSelector'.  To get the actual name, get the selector,
+   then the name from the selector (ie, use sel_getName
+   (method_getName (method))).  */
+objc_EXPORT SEL method_getName (Method method);
+
+/* Return the IMP of the method.  Return NULL if 'method' is NULL.  */
+objc_EXPORT IMP method_getImplementation (Method method);
+
+/* Return the type encoding of the method.  Return NULL if 'method' is
+   NULL.  */
+objc_EXPORT const char * method_getTypeEncoding (Method method);
+
+/* Return a method description for the method.  Return NULL if
+   'method' is NULL.  */
+objc_EXPORT struct objc_method_description * method_getDescription (Method method);
+
+/* Return all the instance methods of the class.  The return value of
+   the function is a pointer to an area, allocated with malloc(), that
+   contains all the instance methods of the class.  It does not
+   include instance methods of superclasses.  The list is terminated
+   by NULL.  Optionally, if you pass a non-NULL
+   'numberOfReturnedMethods' pointer, the unsigned int that it points
+   to will be filled with the number of instance methods returned.  To
+   get the list of class methods, pass the meta-class in the 'class_'
+   argument, (ie, use class_copyMethodList (object_getClass (class_),
+   &numberOfReturnedMethods)).  */
+objc_EXPORT Method * class_copyMethodList (Class class_, unsigned int *numberOfReturnedMethods);
+
+
+/** Implementation: the following functions are in encoding.c.  */
+
+/* Return the number of arguments that the method 'method' expects.
+   Note that all methods need two implicit arguments ('self' for the
+   receiver, and '_cmd' for the selector).  Return 0 if 'method' is
+   NULL.  */
+objc_EXPORT unsigned int method_getNumberOfArguments (Method method);
+
+/* Return the string encoding for the return type of method 'method'.
+   The string is a standard zero-terminated string in an area of
+   memory allocated with malloc(); you should free it with free() when
+   you finish using it.  Return an empty string if method is NULL.  */
+objc_EXPORT char * method_copyReturnType (Method method);
+
+/* Return the string encoding for the argument type of method
+   'method', argument number 'argumentNumber' ('argumentNumber' is 0
+   for self, 1 for _cmd, and 2 or more for the additional arguments if
+   any).  The string is a standard zero-terminated string in an area
+   of memory allocated with malloc(); you should free it with free()
+   when you finish using it.  Return an empty string if method is NULL
+   or if 'argumentNumber' refers to a non-existing argument.  */
+objc_EXPORT char * method_copyArgumentType (Method method, unsigned int argumentNumber);
+
+/* Return the string encoding for the return type of method 'method'.
+   The string is returned by copying it into the supplied
+   'returnValue' string, which is of size 'returnValueSize'.  No more
+   than 'returnValueSize' characters are copied; if the encoding is
+   smaller than 'returnValueSize', the rest of 'returnValue' is filled
+   with zeros.  If it is bigger, it is truncated (and would not be
+   zero-terminated).  You should supply a big enough
+   'returnValueSize'.  If the method is NULL, returnValue is set to a
+   string of zeros.  */
+objc_EXPORT void method_getReturnType (Method method, char *returnValue, 
+				       size_t returnValueSize);
+
+/* Return the string encoding for the argument type of method
+   'method', argument number 'argumentNumber' ('argumentNumber' is 0
+   for self, 1 for _cmd, and 2 or more for the additional arguments if
+   any).  The string is returned by copying it into the supplied
+   'returnValue' string, which is of size 'returnValueSize'.  No more
+   than 'returnValueSize' characters are copied; if the encoding is
+   smaller than 'returnValueSize', the rest of 'returnValue' is filled
+   with zeros.  If it is bigger, it is truncated (and would not be
+   zero-terminated).  You should supply a big enough
+   'returnValueSize'.  If the method is NULL, returnValue is set to a
+   string of zeros.  */
+objc_EXPORT void method_getArgumentType (Method method, unsigned int argumentNumber,
+					 char *returnValue, size_t returnValueSize);
+
+
+/** Implementation: the following functions are in protocols.c.  */
+
+/* Return the protocol with name 'name', or nil if it the protocol is
+   not known to the runtime.  */
+objc_EXPORT Protocol *objc_getProtocol (const char *name);
+
+/* Return all the protocols known to the runtime.  The return value of
+   the function is a pointer to an area, allocated with malloc(), that
+   contains all the protocols known to the runtime; the list is
+   terminated by NULL.  You should free this area using free() once
+   you no longer need it.  Optionally, if you pass a non-NULL
+   'numberOfReturnedProtocols' pointer, the unsigned int that it
+   points to will be filled with the number of protocols returned.  If
+   there are no protocols known to the runtime, NULL is returned.  */
+objc_EXPORT Protocol **objc_copyProtocolList (unsigned int *numberOfReturnedProtocols);
+
+/* Add a protocol to a class, and return YES if it was done
+   succesfully, and NO if not.  At the moment, NO should only happen
+   if class_ or protocol are nil, if the protocol is not a Protocol
+   object or if the class already conforms to the protocol.  */
+objc_EXPORT BOOL class_addProtocol (Class class_, Protocol *protocol);
+
+/* Return YES if the class 'class_' conforms to Protocol 'protocol',
+   and NO if not.  This function does not check superclasses; if you
+   want to check for superclasses (in the way that [NSObject
+   +conformsToProtocol:] does) you need to iterate over the class
+   hierarchy using class_getSuperclass(), and call
+   class_conformsToProtocol() for each of them.  */
+objc_EXPORT BOOL class_conformsToProtocol (Class class_, Protocol *protocol);
+
+/* Return all the protocols that the class conforms to.  The return
+   value of the function is a pointer to an area, allocated with
+   malloc(), that contains all the protocols formally adopted by the
+   class.  It does not include protocols adopted by superclasses.  The
+   list is terminated by NULL.  Optionally, if you pass a non-NULL
+   'numberOfReturnedProtocols' pointer, the unsigned int that it
+   points to will be filled with the number of protocols returned.
+   This function does not return protocols that superclasses conform
+   to.  */
+objc_EXPORT Protocol **class_copyProtocolList (Class class_, unsigned int *numberOfReturnedProtocols);
+
+/* Return YES if protocol 'protocol' conforms to protocol
+   'anotherProtocol', and NO if not.  Note that if one of the two
+   protocols is nil, it returns NO.  */
+objc_EXPORT BOOL protocol_conformsToProtocol (Protocol *protocol, Protocol *anotherProtocol);
+
+/* Return YES if protocol 'protocol' is the same as protocol
+   'anotherProtocol', and 'NO' if not.  Note that it returns YES if
+   the two protocols are both nil.  */
+objc_EXPORT BOOL protocol_isEqual (Protocol *protocol, Protocol *anotherProtocol);
+
+/* Return the name of protocol 'protocol'.  If 'protocol' is nil or is
+   not a Protocol, return NULL.  */
+objc_EXPORT const char *protocol_getName (Protocol *protocol);
+
+/* Return the method description for the method with selector
+   'selector' in protocol 'protocol'; if 'requiredMethod' is YES, the
+   function searches the list of required methods; if NO, the list of
+   optional methods.  If 'instanceMethod' is YES, the function search
+   for an instance method; if NO, for a class method.  If there is no
+   matching method, an objc_method_description structure with both
+   name and types set to NULL is returned.  This function will only
+   find methods that are directly declared in the protocol itself, not
+   in other protocols that this protocol adopts.
+
+   Note that the traditional ABI does not store the list of optional
+   methods of a protocol in a compiled module, so the traditional ABI
+   will always return (NULL, NULL) when requiredMethod == NO.  */
+objc_EXPORT struct objc_method_description protocol_getMethodDescription (Protocol *protocol, 
+									  SEL selector,
+									  BOOL requiredMethod,
+									  BOOL instanceMethod);
+
+/* Return the method descriptions of all the methods of the protocol.
+   The return value of the function is a pointer to an area, allocated
+   with malloc(), that contains all the method descriptions of the
+   methods of the protocol.  It does not recursively include methods
+   of the protocols adopted by this protocol.  The list is terminated
+   by a NULL objc_method_description (one with both fields set to
+   NULL).  Optionally, if you pass a non-NULL
+   'numberOfReturnedMethods' pointer, the unsigned int that it points
+   to will be filled with the number of properties returned.
+
+   Note that the traditional ABI does not store the list of optional
+   methods of a protocol in a compiled module, so the traditional ABI
+   will always return an empty list if requiredMethod is set to
+   NO.  */
+objc_EXPORT struct objc_method_description *protocol_copyMethodDescriptionList (Protocol *protocol,
+										BOOL requiredMethod,
+										BOOL instanceMethod,
+										unsigned int *numberOfReturnedMethods);
+
+/* Return the property with name 'propertyName' of the protocol
+   'protocol'.  If 'requiredProperty' is YES, the function searches
+   the list of required properties; if NO, the list of optional
+   properties.  If 'instanceProperty' is YES, the function searches
+   the list of instance properties; if NO, the list of class
+   properties.  At the moment, optional properties and class
+   properties are not part of the Objective-C language, so both
+   'requiredProperty' and 'instanceProperty' should be set to YES.
+   This function returns NULL if the required property can not be
+   found.
+
+   Note that the traditional ABI does not store the list of properties
+   of a protocol in a compiled module, so the traditional ABI will
+   always return NULL.  */
+objc_EXPORT Property protocol_getProperty (Protocol *protocol, const char *propertyName, 
+					   BOOL requiredProperty, BOOL instanceProperty);
+
+/* Return all the properties of the protocol.  The return value of the
+   function is a pointer to an area, allocated with malloc(), that
+   contains all the properties of the protocol.  It does not
+   recursively include properties of the protocols adopted by this
+   protocol.  The list is terminated by NULL.  Optionally, if you pass
+   a non-NULL 'numberOfReturnedProperties' pointer, the unsigned int
+   that it points to will be filled with the number of properties
+   returned.
+
+   Note that the traditional ABI does not store the list of properties
+   of a protocol in a compiled module, so the traditional ABI will
+   always return NULL and store 0 in numberOfReturnedProperties.  */
+objc_EXPORT Property *protocol_copyPropertyList (Protocol *protocol, unsigned int *numberOfReturnedProperties);
+
+/* Return all the protocols that the protocol conforms to.  The return
+   value of the function is a pointer to an area, allocated with
+   malloc(), that contains all the protocols formally adopted by the
+   protocol.  It does not recursively include protocols adopted by the
+   protocols adopted by this protocol.  The list is terminated by
+   NULL.  Optionally, if you pass a non-NULL
+   'numberOfReturnedProtocols' pointer, the unsigned int that it
+   points to will be filled with the number of protocols returned.  */
+objc_EXPORT Protocol **protocol_copyProtocolList (Protocol *protocol, unsigned int *numberOfReturnedProtocols);
+
+
+/** Implementation: the following hook is in init.c.  */
+
+/* This is a hook which is called by __objc_exec_class every time a
+   class or a category is loaded into the runtime.  This may e.g. help
+   a dynamic loader determine the classes that have been loaded when
+   an object file is dynamically linked in.  */
+objc_EXPORT void (*_objc_load_callback)(Class _class, struct objc_category *category);
+
+
+/** Implementation: the following functions are in objc-foreach.c.  */
+
+/* 'objc_enumerationMutation()' is called when a collection is
+   mutated while being "fast enumerated".  That is a hard error, and
+   objc_enumerationMutation is called to deal with it.  'collection'
+   is the collection object that was mutated during an enumeration.
+
+   objc_enumerationMutation() will invoke the mutation handler if any
+   is set.  Then, it will abort the program.
+
+   Compatibility note: the Apple runtime will not abort the program
+   after calling the mutation handler.  */
+objc_EXPORT void objc_enumerationMutation (id collection);
+
+/* 'objc_set_enumeration_mutation_handler' can be used to set a
+   function that will be called (instead of aborting) when a fast
+   enumeration is mutated during enumeration.  The handler will be
+   called with the 'collection' being mutated as the only argument and
+   it should not return; it should either exit the program, or could
+   throw an exception.  The recommended implementation is to throw an
+   exception - the user can then use exception handlers to deal with
+   it.
+
+   This function is not thread safe (other threads may be trying to
+   invoke the enumeration mutation handler while you are changing it!)
+   and should be called during during the program initialization
+   before threads are started.  It is mostly reserved for "Foundation"
+   libraries; in the case of GNUstep, GNUstep Base may be using this
+   function to improve the standard enumeration mutation handling.
+   You probably shouldn't use this function unless you are writing
+   your own Foundation library.  */
+objc_EXPORT void objc_setEnumerationMutationHandler (void (*handler)(id));
+
+/* This structure (used during fast enumeration) is automatically
+   defined by the compiler (it is as if this definition was always
+   included in all Objective-C files).  Note that it is usually
+   defined again with the name of NSFastEnumeration by "Foundation"
+   libraries such as GNUstep Base.  And if NSFastEnumeration is
+   defined, the compiler will use it instead of
+   __objcFastEnumerationState when doing fast enumeration.  */
+/*
+struct __objcFastEnumerationState
+{
+  unsigned long state;
+  id            *itemsPtr;
+  unsigned long *mutationsPtr;
+  unsigned long extra[5];
+};
+*/
+
+
+/* Compatibility Note: The Apple/NeXT runtime has the functions
+   objc_copyImageNames (), class_getImageName () and
+   objc_copyClassNamesForImage () but they are undocumented.  The GNU
+   runtime does not have them at the moment.  */
+
+/* Compatibility Note: The Apple/NeXT runtime has the functions
+   objc_setAssociatedObject (), objc_getAssociatedObject (),
+   objc_removeAssociatedObjects () and the objc_AssociationPolicy type
+   and related enum.  The GNU runtime does not have them yet.
+   TODO: Implement them.  */
+
+/* Compatibility Note: The Apple/NeXT runtime has the function
+   objc_setForwardHandler ().  The GNU runtime does not have it
+   because messaging (and, in particular, forwarding) works in a
+   different (incompatible) way with the GNU runtime.  If you need to
+   customize message forwarding at the Objective-C runtime level (that
+   is, if you are implementing your own "Foundation" library such as
+   GNUstep Base on top of the Objective-C runtime), in objc/message.h
+   there are hooks (that work in the framework of the GNU runtime) to
+   do so.  */
+
+
+/** Implementation: the following functions are in memory.c.  */
+
+/* Traditional GNU Objective-C Runtime functions that are used for
+   memory allocation and disposal.  These functions are used in the
+   same way as you use malloc, realloc, calloc and free and make sure
+   that memory allocation works properly with the garbage
+   collector.
+
+   Compatibility Note: these functions are not available with the
+   Apple/NeXT runtime.  */
+
+objc_EXPORT void *objc_malloc(size_t size);
+
+/* FIXME: Shouldn't the following be called objc_malloc_atomic ?  The
+   GC function is GC_malloc_atomic() which makes sense.
+ */
+objc_EXPORT void *objc_atomic_malloc(size_t size);
+
+objc_EXPORT void *objc_realloc(void *mem, size_t size);
+
+objc_EXPORT void *objc_calloc(size_t nelem, size_t size);
+
+objc_EXPORT void objc_free(void *mem);
+
+
+/** Implementation: the following functions are in gc.c.  */
+
+/* The GNU Objective-C Runtime has a different implementation of
+   garbage collection.
+
+   Compatibility Note: these functions are not available with the
+   Apple/NeXT runtime.  */
+
+/* Mark the instance variable as inaccessible to the garbage
+   collector.  */
+objc_EXPORT void class_ivar_set_gcinvisible (Class _class,
+					     const char* ivarname,
+					     BOOL gcInvisible);
+
+
+/** Implementation: the following functions are in encoding.c.  */
+
+/* Traditional GNU Objective-C Runtime functions that are currently
+   used to implement method forwarding.
+
+   Compatibility Note: these functions are not available with the
+   Apple/NeXT runtime.  */
+
+/* Return the size of a variable which has the specified 'type'
+   encoding.  */
+objc_EXPORT int objc_sizeof_type (const char *type);
+
+/* Return the align of a variable which has the specified 'type'
+   encoding.  */
+objc_EXPORT int objc_alignof_type (const char *type);
+
+/* Return the aligned size of a variable which has the specified
+   'type' encoding.  The aligned size is the size rounded up to the
+   nearest alignment.  */
+objc_EXPORT int objc_aligned_size (const char *type);
+
+/* Return the promoted size of a variable which has the specified
+   'type' encoding.  This is the size rounded up to the nearest
+   integral of the wordsize, taken to be the size of a void *.  */
+objc_EXPORT int objc_promoted_size (const char *type);
+
+
+/* The following functions are used when parsing the type encoding of
+   methods, to skip over parts that are ignored.  They take as
+   argument a pointer to a location inside the type encoding of a
+   method (which is a string) and return a new pointer, pointing to a
+   new location inside the string after having skipped the unwanted
+   information.  */
+
+/* Skip some type qualifiers (_C_CONST, _C_IN, etc).  These may
+  eventually precede typespecs occurring in method prototype
+  encodings.  */
+objc_EXPORT const char *objc_skip_type_qualifiers (const char *type);
+
+/* Skip one typespec element (_C_CLASS, _C_SEL, etc).  If the typespec
+  is prepended by type qualifiers, these are skipped as well.  */
+objc_EXPORT const char *objc_skip_typespec (const char *type);
+
+/* Skip an offset.  */
+objc_EXPORT const char *objc_skip_offset (const char *type);
+
+/* Skip an argument specification (ie, skipping a typespec, which may
+   include qualifiers, and an offset too).  */
+objc_EXPORT const char *objc_skip_argspec (const char *type);
+
+/* Read type qualifiers (_C_CONST, _C_IN, etc) from string 'type'
+   (stopping at the first non-type qualifier found) and return an
+   unsigned int which is the logical OR of all the corresponding flags
+   (_F_CONST, _F_IN etc).  */
+objc_EXPORT unsigned objc_get_type_qualifiers (const char *type);
+
+
+/* Note that the following functions work for very simple structures,
+   but get easily confused by more complicated ones (for example,
+   containing vectors).  A better solution is required.  These
+   functions are likely to change in the next GCC release.  */
+
+/* The following three functions can be used to determine how a
+   structure is laid out by the compiler. For example:
+
+  struct objc_struct_layout layout;
+  int i;
+
+  objc_layout_structure (type, &layout);
+  while (objc_layout_structure_next_member (&layout))
+    {
+      int position, align;
+      const char *type;
+
+      objc_layout_structure_get_info (&layout, &position, &align, &type);
+      printf ("element %d has offset %d, alignment %d\n",
+              i++, position, align);
+    }
+
+  These functions are used by objc_sizeof_type and objc_alignof_type
+  functions to compute the size and alignment of structures. The
+  previous method of computing the size and alignment of a structure
+  was not working on some architectures, particulary on AIX, and in
+  the presence of bitfields inside the structure.  */
+struct objc_struct_layout
+{
+  const char *original_type;
+  const char *type;
+  const char *prev_type;
+  unsigned int record_size;
+  unsigned int record_align;
+};
+
+objc_EXPORT void objc_layout_structure (const char *type,
+                            struct objc_struct_layout *layout);
+objc_EXPORT BOOL  objc_layout_structure_next_member (struct objc_struct_layout *layout);
+objc_EXPORT void objc_layout_finish_structure (struct objc_struct_layout *layout,
+					       unsigned int *size,
+					       unsigned int *align);
+objc_EXPORT void objc_layout_structure_get_info (struct objc_struct_layout *layout,
+						 unsigned int *offset,
+						 unsigned int *align,
+						 const char **type);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif
diff --git a/libobjc/objc/sarray.h b/libobjc/objc/sarray.h
new file mode 100644
index 000000000..ff51e47f9
--- /dev/null
+++ b/libobjc/objc/sarray.h
@@ -0,0 +1,2 @@
+#include "deprecated/sarray.h"
+
diff --git a/libobjc/objc/thr.h b/libobjc/objc/thr.h
new file mode 100644
index 000000000..d5ddf9b2f
--- /dev/null
+++ b/libobjc/objc/thr.h
@@ -0,0 +1,117 @@
+/* Thread and mutex controls for Objective C.
+   Copyright (C) 1996, 1997, 2002, 2004, 2009, 2010
+   Free Software Foundation, Inc.
+   Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __thread_INCLUDE_GNU
+#define __thread_INCLUDE_GNU
+
+#include "objc.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/*************************************************************************
+ *  Universal static variables:
+ */
+extern int __objc_thread_exit_status;      /* Global exit status.   */
+
+/********
+ *  Thread safe implementation types and functions.  
+ */
+
+/* Thread priorities */
+#define OBJC_THREAD_INTERACTIVE_PRIORITY        2
+#define OBJC_THREAD_BACKGROUND_PRIORITY         1
+#define OBJC_THREAD_LOW_PRIORITY                0
+
+/* A thread */
+typedef void * objc_thread_t;
+
+/* This structure represents a single mutual exclusion lock. */
+struct objc_mutex
+{
+  volatile objc_thread_t owner;     /* Id of thread that owns. */
+  volatile int depth;               /* # of acquires. */
+  void * backend;                   /* Specific to backend */
+};
+typedef struct objc_mutex *objc_mutex_t;
+
+/* This structure represents a single condition mutex */
+struct objc_condition
+{
+  void * backend;                   /* Specific to backend */
+};
+typedef struct objc_condition *objc_condition_t;
+
+/* Frontend mutex functions */
+objc_mutex_t objc_mutex_allocate (void);
+int objc_mutex_deallocate (objc_mutex_t mutex);
+int objc_mutex_lock (objc_mutex_t mutex);
+int objc_mutex_unlock (objc_mutex_t mutex);
+int objc_mutex_trylock (objc_mutex_t mutex);
+
+/* Frontend condition mutex functions */
+objc_condition_t objc_condition_allocate (void);
+int objc_condition_deallocate (objc_condition_t condition);
+int objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex);
+int objc_condition_signal (objc_condition_t condition);
+int objc_condition_broadcast (objc_condition_t condition);
+
+/* Frontend thread functions */
+objc_thread_t objc_thread_detach (SEL selector, id object, id argument);
+void objc_thread_yield (void);
+int objc_thread_exit (void);
+int objc_thread_set_priority (int priority);
+int objc_thread_get_priority (void);
+void * objc_thread_get_data (void);
+int objc_thread_set_data (void *value);
+objc_thread_t objc_thread_id (void);
+void objc_thread_add (void);
+void objc_thread_remove (void);
+
+/*
+  Use this to set the hook function that will be called when the 
+  runtime initially becomes multi threaded.
+  The hook function is only called once, meaning only when the 
+  2nd thread is spawned, not for each and every thread.
+
+  It returns the previous hook function or NULL if there is none.
+
+  A program outside of the runtime could set this to some function so
+  it can be informed; for example, the GNUstep Base Library sets it 
+  so it can implement the NSBecomingMultiThreaded notification.
+  */
+typedef void (*objc_thread_callback) (void);
+objc_thread_callback objc_set_thread_callback (objc_thread_callback func);
+
+/* Backend initialization functions */
+int __objc_init_thread_system (void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* not __thread_INCLUDE_GNU */
diff --git a/libobjc/objc/typedstream.h b/libobjc/objc/typedstream.h
new file mode 100644
index 000000000..a39c51b29
--- /dev/null
+++ b/libobjc/objc/typedstream.h
@@ -0,0 +1,4 @@
+#include "objc.h"
+#include "deprecated/hash.h"
+#include "deprecated/typedstream.h"
+
diff --git a/libobjc/objects.c b/libobjc/objects.c
new file mode 100644
index 000000000..1c69456a6
--- /dev/null
+++ b/libobjc/objects.c
@@ -0,0 +1,130 @@
+/* GNU Objective C Runtime class related functions
+   Copyright (C) 1993, 1995, 1996, 2009, 2010 Free Software Foundation, Inc.
+   Contributed by Kresten Krab Thorup
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "objc-private/common.h"
+#include "objc/runtime.h"
+#include "objc/thr.h"                   /* Required by objc-private/runtime.h.  */
+#include "objc-private/module-abi-8.h"  /* For CLS_ISCLASS and similar.  */
+#include "objc-private/runtime.h"	/* the kitchen sink */
+
+#include <string.h>                     /* For memcpy()  */
+
+#if OBJC_WITH_GC
+# include <gc.h>
+# include <gc_typed.h>
+#endif
+
+/* FIXME: The semantics of extraBytes are not really clear.  */
+inline
+id
+class_createInstance (Class class, size_t extraBytes)
+{
+  id new = nil;
+
+#if OBJC_WITH_GC
+  if (CLS_ISCLASS (class))
+    new = (id) GC_malloc_explicitly_typed (class->instance_size + extraBytes,
+					   (GC_descr)class->gc_object_type);
+#else
+  if (CLS_ISCLASS (class))
+    new = (id) objc_calloc (class->instance_size + extraBytes, 1);
+#endif
+
+  if (new != nil)
+    {
+      /* There is no need to zero the memory, since both
+	 GC_malloc_explicitly_typed and objc_calloc return zeroed
+	 memory.  */
+      new->class_pointer = class;
+    }
+
+  /* TODO: Invoke C++ constructors on all appropriate C++ instance
+     variables of the new object.  */
+
+  return new;
+}
+
+/* Traditional GNU Objective-C Runtime API.  */
+id
+class_create_instance (Class class)
+{
+  return class_createInstance (class, 0);
+}
+
+id
+object_copy (id object, size_t extraBytes)
+{
+  if ((object != nil) && CLS_ISCLASS (object->class_pointer))
+    {
+      /* TODO: How should it work with C++ constructors ? */
+      id copy = class_createInstance (object->class_pointer, extraBytes);
+      memcpy (copy, object, object->class_pointer->instance_size + extraBytes);
+      return copy;
+    }
+  else
+    return nil;
+}
+
+id
+object_dispose (id object)
+{
+  if ((object != nil) && CLS_ISCLASS (object->class_pointer))
+    {
+      /* TODO: Invoke C++ destructors on all appropriate C++ instance
+	 variables.  But what happens with the garbage collector ?
+	 Would object_dispose() be ever called in that case ?  */
+
+      objc_free (object);
+    }
+  return nil;
+}
+
+const char *
+object_getClassName (id object)
+{
+  if (object != nil)
+    return object->class_pointer->name;
+  else
+    return "Nil";
+}
+
+Class
+object_setClass (id object, Class class_)
+{
+  if (object == nil)
+    return Nil;
+  else
+    {
+      Class old_class = object->class_pointer;
+
+      object->class_pointer = class_;
+      return old_class;
+    }
+}
+
+/* Hook functions for memory allocation and disposal.  Deprecated and
+   currently unused.  */
+id (*_objc_object_alloc) (Class)   = 0;
+id (*_objc_object_dispose) (id)    = 0;
+id (*_objc_object_copy) (id)       = 0;
diff --git a/libobjc/protocols.c b/libobjc/protocols.c
new file mode 100644
index 000000000..3ff6fbaa1
--- /dev/null
+++ b/libobjc/protocols.c
@@ -0,0 +1,557 @@
+/* GNU Objective C Runtime protocol related functions.
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Nicola Pero
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "objc-private/common.h"
+#include "objc/runtime.h"
+#include "objc-private/module-abi-8.h" /* For runtime structures  */
+#include "objc/thr.h"
+#include "objc-private/runtime.h"      /* the kitchen sink */
+#include "objc-private/hash.h"         /* For the hash table of protocols.  */
+#include "objc-private/protocols.h"    /* For __objc_protocols_init() and
+                                          __objc_protocols_add_protocol().  */
+#include <stdlib.h>                    /* For malloc.  */
+
+/* This is a table that maps a name to a Protocol instance with that
+   name.  Because there may be multiple Protocol instances with the
+   same name (no harm in that) the table records only one
+   instance.  */
+static cache_ptr __protocols_hashtable;
+
+/* A mutex protecting the protocol_hashtable.  */
+static objc_mutex_t __protocols_hashtable_lock = NULL;
+
+/* Called at startup by init.c.  */
+void
+__objc_protocols_init (void)
+{
+  __protocols_hashtable_lock = objc_mutex_allocate ();
+
+  /* The keys in the table are strings, and the values are Protocol
+     objects.  */
+  __protocols_hashtable = objc_hash_new (64, (hash_func_type) objc_hash_string,
+					 (compare_func_type) objc_compare_strings);
+}
+
+/* Add a protocol to the hashtable.  */
+void
+__objc_protocols_add_protocol (const char *name, Protocol *object)
+{
+  objc_mutex_lock (__protocols_hashtable_lock);
+
+  /* If we find a protocol with the same name already in the
+     hashtable, we do not need to add the new one, because it will be
+     identical to it.  This in the reasonable assumption that two
+     protocols with the same name are identical, which is expected in
+     any sane program.  If we are really paranoid, we would compare
+     the protocols and abort if they are not identical.
+     Unfortunately, this would slow down the startup of all
+     Objective-C programs while trying to catch a problem that has
+     never been seen in practice, so we don't do it.  */
+  if (! objc_hash_is_key_in_hash (__protocols_hashtable, name))
+    objc_hash_add (&__protocols_hashtable, name, object);
+
+  objc_mutex_unlock (__protocols_hashtable_lock);
+}
+
+Protocol *
+objc_getProtocol (const char *name)
+{
+  Protocol *protocol;
+
+  if (name == NULL)
+    return NULL;
+
+  objc_mutex_lock (__protocols_hashtable_lock);
+  protocol = (Protocol *)(objc_hash_value_for_key (__protocols_hashtable, name));
+  objc_mutex_unlock (__protocols_hashtable_lock);
+
+  return protocol;
+}
+
+Protocol **
+objc_copyProtocolList (unsigned int *numberOfReturnedProtocols)
+{
+  unsigned int count = 0;
+  Protocol **returnValue = NULL;
+  node_ptr node;
+
+  objc_mutex_lock (__protocols_hashtable_lock);
+
+  /* Count how many protocols we have.  */
+  node = objc_hash_next (__protocols_hashtable, NULL);
+  while (node)
+    {
+      count++;
+      node = objc_hash_next (__protocols_hashtable, node);
+    }
+
+  if (count != 0)
+    {
+      unsigned int i = 0;
+
+      /* Allocate enough memory to hold them.  */
+      returnValue = (Protocol **)(malloc (sizeof (Protocol *) * (count + 1)));
+      
+      /* Copy the protocols.  */
+      node = objc_hash_next (__protocols_hashtable, NULL);
+      while (node)
+	{
+	  returnValue[i] = node->value;
+	  i++;
+	  node = objc_hash_next (__protocols_hashtable, node);
+	}
+
+      returnValue[i] = NULL;
+    }
+  objc_mutex_unlock (__protocols_hashtable_lock);
+
+  if (numberOfReturnedProtocols)
+    *numberOfReturnedProtocols = count;
+
+  return returnValue;
+}
+
+BOOL 
+class_addProtocol (Class class_, Protocol *protocol)
+{
+  struct objc_protocol_list *protocols;
+
+  if (class_ == Nil  ||  protocol == NULL)
+    return NO;
+
+  if (class_conformsToProtocol (class_, protocol))
+    return NO;
+
+  /* Check that it is a Protocol object before casting it to (struct
+     objc_protocol *).  */
+  if (protocol->class_pointer != objc_lookUpClass ("Protocol"))
+    return NO;
+
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  /* Create the objc_protocol_list.  */
+  protocols = malloc (sizeof (struct objc_protocol_list));
+  protocols->count = 1;
+  protocols->list[0] = protocol;
+
+  /* Attach it to the list of class protocols.  */
+  protocols->next = class_->protocols;
+  class_->protocols = protocols;
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+
+  return YES;
+}
+
+BOOL 
+class_conformsToProtocol (Class class_, Protocol *protocol)
+{
+  struct objc_protocol_list* proto_list;
+
+  if (class_ == Nil  ||  protocol == NULL)
+    return NO;
+
+  /* Check that it is a Protocol object before casting it to (struct
+     objc_protocol *).  */
+  if (protocol->class_pointer != objc_lookUpClass ("Protocol"))
+    return NO;
+
+  /* Acquire the runtime lock because the list of protocols for a
+     class may be modified concurrently, for example if another thread
+     calls class_addProtocol(), or dynamically loads from a file a
+     category of the class.  */
+  objc_mutex_lock (__objc_runtime_mutex);
+  proto_list = class_->protocols;
+
+  while (proto_list)
+    {
+      size_t i;
+      for (i = 0; i < proto_list->count; i++)
+	{
+	  if (proto_list->list[i] == protocol
+	      || protocol_conformsToProtocol (proto_list->list[i],
+					      protocol))
+	    {
+	      objc_mutex_unlock (__objc_runtime_mutex);
+	      return YES;
+	    }
+	}
+      proto_list = proto_list->next;
+    }
+  
+  objc_mutex_unlock (__objc_runtime_mutex);
+  return NO;
+}
+
+Protocol **
+class_copyProtocolList (Class class_, unsigned int *numberOfReturnedProtocols)
+{
+  unsigned int count = 0;
+  Protocol **returnValue = NULL;
+  struct objc_protocol_list* proto_list;
+
+  if (class_ == Nil)
+    {
+      if (numberOfReturnedProtocols)
+	*numberOfReturnedProtocols = 0;
+      return NULL;
+    }
+
+  /* Lock the runtime mutex because the class protocols may be
+     concurrently modified.  */
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  /* Count how many protocols we have.  */
+  proto_list = class_->protocols;
+
+  while (proto_list)
+    {
+      count = count + proto_list->count;
+      proto_list = proto_list->next;
+    }
+
+  if (count != 0)
+    {
+      unsigned int i = 0;
+      
+      /* Allocate enough memory to hold them.  */
+      returnValue = (Protocol **)(malloc (sizeof (Protocol *) * (count + 1)));
+      
+      /* Copy the protocols.  */
+      proto_list = class_->protocols;
+      
+      while (proto_list)
+	{
+	  size_t j;
+	  for (j = 0; j < proto_list->count; j++)
+	    {
+	      returnValue[i] = proto_list->list[j];
+	      i++;
+	    }
+	  proto_list = proto_list->next;
+	}
+      
+      returnValue[i] = NULL;
+    }
+  objc_mutex_unlock (__objc_runtime_mutex);
+
+  if (numberOfReturnedProtocols)
+    *numberOfReturnedProtocols = count;
+
+  return returnValue;
+}
+
+BOOL 
+protocol_conformsToProtocol (Protocol *protocol, Protocol *anotherProtocol)
+{
+  struct objc_protocol_list* proto_list;
+
+  if (protocol == NULL  ||  anotherProtocol == NULL)
+    return NO;
+
+  if (protocol == anotherProtocol)
+    return YES;
+    
+  /* Check that the objects are Protocol objects before casting them
+     to (struct objc_protocol *).  */
+  if (protocol->class_pointer != anotherProtocol->class_pointer)
+    return NO;
+  
+  if (protocol->class_pointer != objc_lookUpClass ("Protocol"))
+    return NO;
+
+  if (strcmp (((struct objc_protocol *)protocol)->protocol_name,
+	      ((struct objc_protocol *)anotherProtocol)->protocol_name) == 0)
+    return YES;
+
+  /* We do not acquire any lock because protocols are currently
+     immutable.  We can freely iterate over a protocol structure.  */
+  proto_list = ((struct objc_protocol *)protocol)->protocol_list;
+  while (proto_list)
+    {
+      size_t i;
+      
+      for (i = 0; i < proto_list->count; i++)
+	{
+	  if (protocol_conformsToProtocol (proto_list->list[i], anotherProtocol))
+	    return YES;
+	}
+      proto_list = proto_list->next;
+    }
+
+  return NO;
+}
+
+BOOL 
+protocol_isEqual (Protocol *protocol, Protocol *anotherProtocol)
+{
+  if (protocol == anotherProtocol)
+    return YES;
+
+  if (protocol == NULL  ||  anotherProtocol == NULL)
+    return NO;
+  
+  /* Check that the objects are Protocol objects before casting them
+     to (struct objc_protocol *).  */
+  if (protocol->class_pointer != anotherProtocol->class_pointer)
+    return NO;
+  
+  if (protocol->class_pointer != objc_lookUpClass ("Protocol"))
+    return NO;
+
+  /* Equality between formal protocols is only formal (nothing to do
+     with actually checking the list of methods they have!).  Two
+     formal Protocols are equal if and only if they have the same
+     name.
+
+     Please note (for comparisons with other implementations) that
+     checking the names is equivalent to checking that Protocol A
+     conforms to Protocol B and Protocol B conforms to Protocol A,
+     because this happens iff they have the same name.  If they have
+     different names, A conforms to B if and only if A includes B, but
+     the situation where A includes B and B includes A is a circular
+     dependency between Protocols which is forbidden by the compiler,
+     so A conforms to B and B conforms to A with A and B having
+     different names is an impossible case.  */
+  if (strcmp (((struct objc_protocol *)protocol)->protocol_name,
+	      ((struct objc_protocol *)anotherProtocol)->protocol_name) == 0)
+    return YES;
+  
+  return NO;
+}
+
+const char *
+protocol_getName (Protocol *protocol)
+{
+  /* Check that it is a Protocol object before casting it to (struct
+     objc_protocol *).  */
+  if (protocol->class_pointer != objc_lookUpClass ("Protocol"))
+    return NULL;
+
+  return ((struct objc_protocol *)protocol)->protocol_name;
+}
+
+struct objc_method_description protocol_getMethodDescription (Protocol *protocol, 
+							      SEL selector,
+							      BOOL requiredMethod,
+							      BOOL instanceMethod)
+{
+  struct objc_method_description no_result = { NULL, NULL };
+  struct objc_method_description_list *methods;
+  int i;
+
+  /* TODO: New ABI.  */
+  /* The current ABI does not have any information on optional protocol methods.  */
+  if (! requiredMethod)
+    return no_result;
+
+  /* Check that it is a Protocol object before casting it to (struct
+     objc_protocol *).  */
+  if (protocol->class_pointer != objc_lookUpClass ("Protocol"))
+    return no_result;
+
+  if (instanceMethod)
+    methods = ((struct objc_protocol *)protocol)->instance_methods;
+  else
+    methods = ((struct objc_protocol *)protocol)->class_methods;
+
+  if (methods)
+    {
+      for (i = 0; i < methods->count; i++)
+	{
+	  if (sel_isEqual (methods->list[i].name, selector))
+	    return methods->list[i];
+	  /*
+	  if (strcmp (sel_getName (methods->list[i].name), selector_name) == 0)
+	    return methods->list[i];
+	  */
+	}
+    }
+
+  return no_result;
+}
+
+struct objc_method_description *protocol_copyMethodDescriptionList (Protocol *protocol,
+								    BOOL requiredMethod,
+								    BOOL instanceMethod,
+								    unsigned int *numberOfReturnedMethods)
+{
+  struct objc_method_description_list *methods;
+  unsigned int count = 0;
+  struct objc_method_description *returnValue = NULL;
+
+  /* TODO: New ABI */
+  /* The current ABI does not have any information on optional protocol methods.  */
+  if (! requiredMethod)
+    {
+      if (numberOfReturnedMethods)
+	*numberOfReturnedMethods = 0;
+
+      return NULL;
+    }
+
+  /* Check that it is a Protocol object before casting it to (struct
+     objc_protocol *).  */
+  if (protocol == NULL  ||  protocol->class_pointer != objc_lookUpClass ("Protocol"))
+    {
+      if (numberOfReturnedMethods)
+	*numberOfReturnedMethods = 0;
+
+      return NULL;
+    }
+  
+  /* We do not acquire any lock because protocols are currently
+     immutable.  We can freely iterate over a protocol structure.  */
+
+  if (instanceMethod)
+    methods = ((struct objc_protocol *)protocol)->instance_methods;
+  else
+    methods = ((struct objc_protocol *)protocol)->class_methods;
+
+  if (methods)
+    {
+      unsigned int i;
+      count = methods->count;
+
+      /* Allocate enough memory to hold them.  */
+      returnValue = (struct objc_method_description *)(malloc (sizeof (struct objc_method_description) * (count + 1)));
+
+      /* Copy them.  */
+      for (i = 0; i < count; i++)
+	{
+	  returnValue[i].name = methods->list[i].name;
+	  returnValue[i].types = methods->list[i].types;
+	}
+      returnValue[i].name = NULL;
+      returnValue[i].types = NULL;
+    }
+
+  if (numberOfReturnedMethods)
+    *numberOfReturnedMethods = count;
+
+  return returnValue;
+}
+
+Property protocol_getProperty (Protocol *protocol, const char *propertyName, 
+			       BOOL requiredProperty, BOOL instanceProperty)
+{
+  if (protocol == NULL  ||  propertyName == NULL)
+    return NULL;
+
+  if (!requiredProperty  ||  !instanceProperty)
+    return NULL;
+
+  /* Check that it is a Protocol object before casting it to (struct
+     objc_protocol *).  */
+  if (protocol->class_pointer != objc_lookUpClass ("Protocol"))
+    return NULL;
+
+  /* TODO: New ABI.  */
+  /* The current ABI does not have any information on protocol properties.  */
+  return NULL;
+}
+
+Property *protocol_copyPropertyList (Protocol *protocol, unsigned int *numberOfReturnedProperties)
+{
+  unsigned int count = 0;
+  Property *returnValue = NULL;
+
+  /* Check that it is a Protocol object before casting it to (struct
+     objc_protocol *).  */
+  if (protocol == NULL  ||  protocol->class_pointer != objc_lookUpClass ("Protocol"))
+    {
+      if (numberOfReturnedProperties)
+	*numberOfReturnedProperties = 0;
+
+      return NULL;
+    }
+  
+  /* We do not acquire any lock because protocols are currently
+     immutable.  We can freely iterate over a protocol structure.  */
+
+  /* TODO: New ABI.  */
+  /* The current ABI does not have any information on protocol properties.  */
+  if (numberOfReturnedProperties)
+    *numberOfReturnedProperties = count;
+
+  return returnValue;
+}
+
+Protocol **protocol_copyProtocolList (Protocol *protocol, unsigned int *numberOfReturnedProtocols)
+{
+  unsigned int count = 0;
+  Protocol **returnValue = NULL;
+  struct objc_protocol_list* proto_list;
+
+  /* Check that it is a Protocol object before casting it to (struct
+     objc_protocol *).  */
+  if (protocol == NULL  ||  protocol->class_pointer != objc_lookUpClass ("Protocol"))
+    {
+      if (numberOfReturnedProtocols)
+	*numberOfReturnedProtocols = 0;
+
+      return NULL;
+    }
+  
+  /* We do not acquire any lock because protocols are currently
+     immutable.  We can freely iterate over a protocol structure.  */
+
+  /* Count how many protocols we have.  */
+  proto_list = ((struct objc_protocol *)protocol)->protocol_list;
+
+  while (proto_list)
+    {
+      count = count + proto_list->count;
+      proto_list = proto_list->next;
+    }
+
+  if (count != 0)
+    {
+      unsigned int i = 0;
+      
+      /* Allocate enough memory to hold them.  */
+      returnValue = (Protocol **)(malloc (sizeof (Protocol *) * (count + 1)));
+      
+      /* Copy the protocols.  */
+      proto_list = ((struct objc_protocol *)protocol)->protocol_list;
+      
+      while (proto_list)
+	{
+	  size_t j;
+	  for (j = 0; j < proto_list->count; j++)
+	    {
+	      returnValue[i] = proto_list->list[j];
+	      i++;
+	    }
+	  proto_list = proto_list->next;
+	}
+
+      returnValue[i] = NULL;
+    }
+
+  if (numberOfReturnedProtocols)
+    *numberOfReturnedProtocols = count;
+
+  return returnValue;
+}
diff --git a/libobjc/sarray.c b/libobjc/sarray.c
new file mode 100644
index 000000000..ea4aa93b7
--- /dev/null
+++ b/libobjc/sarray.c
@@ -0,0 +1,523 @@
+/* Sparse Arrays for Objective C dispatch tables
+   Copyright (C) 1993, 1995, 1996, 2002, 2004, 2009, 2010
+   Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "objc-private/common.h"
+#include "objc-private/sarray.h"
+#include "objc/runtime.h" /* For objc_malloc */
+#include "objc/thr.h"     /* For objc_mutex_lock */
+#include "objc-private/runtime.h"
+#include <stdio.h>
+#include <string.h> /* For memset */
+#include <assert.h> /* For assert */
+
+int nbuckets = 0;					/* !T:MUTEX */
+int nindices = 0;					/* !T:MUTEX */
+int narrays = 0;					/* !T:MUTEX */
+int idxsize = 0;					/* !T:MUTEX */
+
+static void *first_free_data = NULL;			/* !T:MUTEX */
+
+#ifdef OBJC_SPARSE2
+const char *__objc_sparse2_id = "2 level sparse indices";
+#endif
+
+#ifdef OBJC_SPARSE3
+const char *__objc_sparse3_id = "3 level sparse indices";
+#endif
+
+/* This function removes any structures left over from free operations
+   that were not safe in a multi-threaded environment. */
+void
+sarray_remove_garbage (void)
+{
+  void **vp;
+  void *np;
+  
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  vp = first_free_data;
+  first_free_data = NULL;
+
+  while (vp)
+    {
+      np = *vp;
+      objc_free (vp);
+      vp = np;
+    }
+  
+  objc_mutex_unlock (__objc_runtime_mutex);
+}
+
+/* Free a block of dynamically allocated memory.  If we are in
+   multi-threaded mode, it is ok to free it.  If not, we add it to the
+   garbage heap to be freed later. */
+static void
+sarray_free_garbage (void *vp)
+{
+  objc_mutex_lock (__objc_runtime_mutex);
+  
+  if (__objc_runtime_threads_alive == 1)
+    {
+      objc_free (vp);
+      if (first_free_data)
+	sarray_remove_garbage ();
+    }
+  else
+    {
+      *(void **)vp = first_free_data;
+      first_free_data = vp;
+    }
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+}
+
+/* sarray_at_put copies data in such a way as to be thread reader
+   safe.  */
+void
+sarray_at_put (struct sarray *array, sidx index, void *element)
+{
+#ifdef OBJC_SPARSE3
+  struct sindex **the_index;
+  struct sindex *new_index;
+#endif
+  struct sbucket **the_bucket;
+  struct sbucket *new_bucket;
+#ifdef OBJC_SPARSE3
+  size_t ioffset;
+#endif
+  size_t boffset;
+  size_t eoffset;
+#ifdef PRECOMPUTE_SELECTORS
+  union sofftype xx; 
+  xx.idx = index;
+#ifdef OBJC_SPARSE3
+  ioffset = xx.off.ioffset;
+#endif
+  boffset = xx.off.boffset;
+  eoffset = xx.off.eoffset;
+#else /* not PRECOMPUTE_SELECTORS */
+#ifdef OBJC_SPARSE3
+  ioffset = index/INDEX_CAPACITY;
+  boffset = (index/BUCKET_SIZE)%INDEX_SIZE;
+  eoffset = index%BUCKET_SIZE;
+#else
+  boffset = index/BUCKET_SIZE;
+  eoffset = index%BUCKET_SIZE;
+#endif
+#endif /* not PRECOMPUTE_SELECTORS */
+
+  assert (soffset_decode (index) < array->capacity); /* Range check */
+
+#ifdef OBJC_SPARSE3
+  the_index = &(array->indices[ioffset]);
+  the_bucket = &((*the_index)->buckets[boffset]);
+#else
+  the_bucket = &(array->buckets[boffset]);
+#endif
+  
+  if ((*the_bucket)->elems[eoffset] == element)
+    return;		/* Great! we just avoided a lazy copy.  */
+
+#ifdef OBJC_SPARSE3
+
+  /* First, perform lazy copy/allocation of index if needed.  */
+
+  if ((*the_index) == array->empty_index)
+    {
+      /* The index was previously empty, allocate a new.  */
+      new_index = (struct sindex *) objc_malloc (sizeof (struct sindex));
+      memcpy (new_index, array->empty_index, sizeof (struct sindex));
+      new_index->version.version = array->version.version;
+      *the_index = new_index;                     /* Prepared for install. */
+      the_bucket = &((*the_index)->buckets[boffset]);
+      
+      nindices += 1;
+    }
+  else if ((*the_index)->version.version != array->version.version)
+    {
+      /* This index must be lazy copied.  */
+      struct sindex *old_index = *the_index;
+      new_index = (struct sindex *) objc_malloc (sizeof (struct sindex));
+      memcpy (new_index, old_index, sizeof (struct sindex));
+      new_index->version.version = array->version.version;
+      *the_index = new_index;                     /* Prepared for install. */
+      the_bucket = &((*the_index)->buckets[boffset]);
+      
+      nindices += 1;
+    }
+  
+#endif /* OBJC_SPARSE3 */
+  
+  /* Next, perform lazy allocation/copy of the bucket if needed.  */
+  if ((*the_bucket) == array->empty_bucket)
+    {
+      /* The bucket was previously empty (or something like that),
+	 allocate a new.  This is the effect of `lazy' allocation.  */  
+      new_bucket = (struct sbucket *) objc_malloc (sizeof (struct sbucket));
+      memcpy ((void *) new_bucket, (const void *) array->empty_bucket, 
+	      sizeof (struct sbucket));
+      new_bucket->version.version = array->version.version;
+      *the_bucket = new_bucket;                   /* Prepared for install. */
+      
+      nbuckets += 1;
+      
+    }
+  else if ((*the_bucket)->version.version != array->version.version)
+    {
+      /* Perform lazy copy.  */
+      struct sbucket *old_bucket = *the_bucket;
+      new_bucket = (struct sbucket *) objc_malloc (sizeof (struct sbucket));
+      memcpy (new_bucket, old_bucket, sizeof (struct sbucket));
+      new_bucket->version.version = array->version.version;
+      *the_bucket = new_bucket;                   /* Prepared for install. */
+      
+      nbuckets += 1;
+    }
+  (*the_bucket)->elems[eoffset] = element;
+}
+
+void
+sarray_at_put_safe (struct sarray *array, sidx index, void *element)
+{
+  if (soffset_decode (index) >= array->capacity)
+    sarray_realloc (array, soffset_decode (index) + 1);
+  sarray_at_put (array, index, element);
+}
+
+struct sarray *
+sarray_new (int size, void *default_element)
+{
+  struct sarray *arr;
+#ifdef OBJC_SPARSE3
+  size_t num_indices = ((size - 1)/(INDEX_CAPACITY)) + 1;
+  struct sindex **new_indices;
+#else /* OBJC_SPARSE2 */
+  size_t num_indices = ((size - 1)/BUCKET_SIZE) + 1;
+  struct sbucket **new_buckets;
+#endif
+  size_t counter;
+
+  assert (size > 0);
+
+  /* Allocate core array.  */
+  arr = (struct sarray *) objc_malloc (sizeof (struct sarray));
+  arr->version.version = 0;
+  
+  /* Initialize members.  */
+#ifdef OBJC_SPARSE3
+  arr->capacity = num_indices*INDEX_CAPACITY;
+  new_indices = (struct sindex **) 
+    objc_malloc (sizeof (struct sindex *) * num_indices);
+  
+  arr->empty_index = (struct sindex *) objc_malloc (sizeof (struct sindex));
+  arr->empty_index->version.version = 0;
+  
+  narrays  += 1;
+  idxsize  += num_indices;
+  nindices += 1;
+
+#else /* OBJC_SPARSE2 */
+  arr->capacity = num_indices*BUCKET_SIZE;
+  new_buckets = (struct sbucket **) 
+    objc_malloc (sizeof (struct sbucket *) * num_indices);
+  
+  narrays  += 1;
+  idxsize  += num_indices;
+
+#endif
+
+  arr->empty_bucket = (struct sbucket *) objc_malloc (sizeof (struct sbucket));
+  arr->empty_bucket->version.version = 0;
+  
+  nbuckets += 1;
+
+  arr->ref_count = 1;
+  arr->is_copy_of = (struct sarray *) 0;
+  
+  for (counter = 0; counter < BUCKET_SIZE; counter++)
+    arr->empty_bucket->elems[counter] = default_element;
+
+#ifdef OBJC_SPARSE3
+  for (counter = 0; counter < INDEX_SIZE; counter++)
+    arr->empty_index->buckets[counter] = arr->empty_bucket;
+
+  for (counter = 0; counter < num_indices; counter++)
+    new_indices[counter] = arr->empty_index;
+
+#else /* OBJC_SPARSE2 */
+
+  for (counter = 0; counter < num_indices; counter++)
+    new_buckets[counter] = arr->empty_bucket;
+
+#endif
+  
+#ifdef OBJC_SPARSE3
+  arr->indices = new_indices;
+#else /* OBJC_SPARSE2 */
+  arr->buckets = new_buckets;
+#endif
+  
+  return arr;
+}
+
+
+/* Reallocate the sparse array to hold `newsize' entries Note: We
+   really allocate and then free.  We have to do this to ensure that
+   any concurrent readers notice the update.  */
+void 
+sarray_realloc (struct sarray *array, int newsize)
+{
+#ifdef OBJC_SPARSE3
+  size_t old_max_index = (array->capacity - 1)/INDEX_CAPACITY;
+  size_t new_max_index = ((newsize - 1)/INDEX_CAPACITY);
+  size_t rounded_size = (new_max_index + 1) * INDEX_CAPACITY;
+
+  struct sindex **new_indices;
+  struct sindex **old_indices;
+  
+#else /* OBJC_SPARSE2 */
+  size_t old_max_index = (array->capacity - 1)/BUCKET_SIZE;
+  size_t new_max_index = ((newsize - 1)/BUCKET_SIZE);
+  size_t rounded_size = (new_max_index + 1) * BUCKET_SIZE;
+
+  struct sbucket **new_buckets;
+  struct sbucket **old_buckets;
+  
+#endif
+
+  size_t counter;
+
+  assert (newsize > 0);
+
+  /* The size is the same, just ignore the request.  */
+  if (rounded_size <= array->capacity)
+    return;
+
+  assert (array->ref_count == 1);	/* stop if lazy copied... */
+
+  /* We are asked to extend the array -- allocate new bucket table,
+     and insert empty_bucket in newly allocated places.  */
+  if (rounded_size > array->capacity) 
+    {
+#ifdef OBJC_SPARSE3
+      new_max_index += 4;
+      rounded_size = (new_max_index + 1) * INDEX_CAPACITY;
+#else /* OBJC_SPARSE2 */
+      new_max_index += 4;
+      rounded_size = (new_max_index + 1) * BUCKET_SIZE;
+#endif
+      
+      /* Update capacity.  */
+      array->capacity = rounded_size;
+
+#ifdef OBJC_SPARSE3
+      /* Alloc to force re-read by any concurrent readers.  */
+      old_indices = array->indices;
+      new_indices = (struct sindex **)
+	objc_malloc ((new_max_index + 1) * sizeof (struct sindex *));
+#else /* OBJC_SPARSE2 */
+      old_buckets = array->buckets;
+      new_buckets = (struct sbucket **)
+	objc_malloc ((new_max_index + 1) * sizeof (struct sbucket *));
+#endif
+
+      /* Copy buckets below old_max_index (they are still valid).  */
+      for (counter = 0; counter <= old_max_index; counter++ )
+	{
+#ifdef OBJC_SPARSE3
+	  new_indices[counter] = old_indices[counter];
+#else /* OBJC_SPARSE2 */
+	  new_buckets[counter] = old_buckets[counter];
+#endif
+	}
+
+#ifdef OBJC_SPARSE3
+      /* Reset entries above old_max_index to empty_bucket.  */
+      for (counter = old_max_index + 1; counter <= new_max_index; counter++)
+	new_indices[counter] = array->empty_index;
+#else /* OBJC_SPARSE2 */
+      /* Reset entries above old_max_index to empty_bucket.  */
+      for (counter = old_max_index + 1; counter <= new_max_index; counter++)
+	new_buckets[counter] = array->empty_bucket;
+#endif
+      
+#ifdef OBJC_SPARSE3
+      /* Install the new indices.  */
+      array->indices = new_indices;
+#else /* OBJC_SPARSE2 */
+      array->buckets = new_buckets;
+#endif
+
+#ifdef OBJC_SPARSE3
+      /* Free the old indices.  */
+      sarray_free_garbage (old_indices);
+#else /* OBJC_SPARSE2 */
+      sarray_free_garbage (old_buckets);
+#endif
+      
+      idxsize += (new_max_index-old_max_index);
+      return;
+    }
+}
+
+
+/* Free a sparse array allocated with sarray_new */
+void 
+sarray_free (struct sarray *array) {
+#ifdef OBJC_SPARSE3
+  size_t old_max_index = (array->capacity - 1)/INDEX_CAPACITY;
+  struct sindex **old_indices;
+#else
+  size_t old_max_index = (array->capacity - 1)/BUCKET_SIZE;
+  struct sbucket **old_buckets;
+#endif
+  size_t counter = 0;
+
+  assert (array->ref_count != 0);	/* Freed multiple times!!! */
+
+  if (--(array->ref_count) != 0)	/* There exists copies of me */
+    return;
+
+#ifdef OBJC_SPARSE3
+  old_indices = array->indices;
+#else
+  old_buckets = array->buckets;
+#endif
+
+  /* Free all entries that do not point to empty_bucket.  */
+  for (counter = 0; counter <= old_max_index; counter++ )
+    {
+#ifdef OBJC_SPARSE3
+      struct sindex *idx = old_indices[counter];
+      if ((idx != array->empty_index)
+	  && (idx->version.version == array->version.version))
+	{
+	  int c2; 
+	  for (c2 = 0; c2 < INDEX_SIZE; c2++)
+	    {
+	      struct sbucket *bkt = idx->buckets[c2];
+	      if ((bkt != array->empty_bucket)
+		  && (bkt->version.version == array->version.version))
+		{
+		  sarray_free_garbage (bkt);
+		  nbuckets -= 1;
+		}
+	    }
+	  sarray_free_garbage (idx);
+	  nindices -= 1;
+	}
+#else /* OBJC_SPARSE2 */
+      struct sbucket *bkt = old_buckets[counter];
+      if ((bkt != array->empty_bucket)
+	  && (bkt->version.version == array->version.version))
+	{
+	  sarray_free_garbage (bkt);
+	  nbuckets -= 1;
+	}
+#endif
+    }
+  
+#ifdef OBJC_SPARSE3  
+  /* Free empty_index.  */
+  if (array->empty_index->version.version == array->version.version)
+    {
+      sarray_free_garbage (array->empty_index);
+      nindices -= 1;
+    }
+#endif
+
+  /* Free empty_bucket.  */
+  if (array->empty_bucket->version.version == array->version.version)
+    {
+      sarray_free_garbage (array->empty_bucket);
+      nbuckets -= 1;
+    }
+  idxsize -= (old_max_index + 1);
+  narrays -= 1;
+  
+#ifdef OBJC_SPARSE3
+  /* Free bucket table.  */
+  sarray_free_garbage (array->indices);
+#else
+  /* Free bucket table.  */
+  sarray_free_garbage (array->buckets);
+#endif
+  
+  /* If this is a copy of another array, we free it (which might just
+     decrement its reference count so it will be freed when no longer
+     in use).  */
+  if (array->is_copy_of)
+    sarray_free (array->is_copy_of);
+
+  /* Free array.  */
+  sarray_free_garbage (array);
+}
+
+/* This is a lazy copy.  Only the core of the structure is actually
+   copied.  */
+struct sarray *
+sarray_lazy_copy (struct sarray *oarr)
+{
+  struct sarray *arr;
+
+#ifdef OBJC_SPARSE3
+  size_t num_indices = ((oarr->capacity - 1)/INDEX_CAPACITY) + 1;
+  struct sindex **new_indices;
+#else /* OBJC_SPARSE2 */
+  size_t num_indices = ((oarr->capacity - 1)/BUCKET_SIZE) + 1;
+  struct sbucket **new_buckets;
+#endif
+
+  /* Allocate core array.  */
+  arr = (struct sarray *) objc_malloc (sizeof (struct sarray)); /* !!! */
+  arr->version.version = oarr->version.version + 1;
+#ifdef OBJC_SPARSE3
+  arr->empty_index = oarr->empty_index;
+#endif
+  arr->empty_bucket = oarr->empty_bucket;
+  arr->ref_count = 1;
+  oarr->ref_count += 1;
+  arr->is_copy_of = oarr;
+  arr->capacity = oarr->capacity;
+  
+#ifdef OBJC_SPARSE3
+  /* Copy bucket table.  */
+  new_indices = (struct sindex **) 
+    objc_malloc (sizeof (struct sindex *) * num_indices);
+  memcpy (new_indices, oarr->indices, sizeof (struct sindex *) * num_indices);
+  arr->indices = new_indices;
+#else 
+  /* Copy bucket table.  */
+  new_buckets = (struct sbucket **) 
+    objc_malloc (sizeof (struct sbucket *) * num_indices);
+  memcpy (new_buckets, oarr->buckets, sizeof (struct sbucket *) * num_indices);
+  arr->buckets = new_buckets;
+#endif
+
+  idxsize += num_indices;
+  narrays += 1;
+  
+  return arr;
+}
diff --git a/libobjc/selector.c b/libobjc/selector.c
new file mode 100644
index 000000000..628b4f6f4
--- /dev/null
+++ b/libobjc/selector.c
@@ -0,0 +1,753 @@
+/* GNU Objective C Runtime selector related functions
+   Copyright (C) 1993, 1995, 1996, 1997, 2002, 2004, 2009, 2010
+   Free Software Foundation, Inc.
+   Contributed by Kresten Krab Thorup
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "objc-private/common.h"
+#include "objc/runtime.h"
+#include "objc/thr.h"
+#include "objc-private/hash.h"
+#include "objc-private/objc-list.h"
+#include "objc-private/module-abi-8.h"
+#include "objc-private/runtime.h"
+#include "objc-private/sarray.h"
+#include "objc-private/selector.h"
+#include <stdlib.h>                    /* For malloc.  */
+
+/* Initial selector hash table size. Value doesn't matter much.  */
+#define SELECTOR_HASH_SIZE 128
+
+/* Tables mapping selector names to uid and opposite.  */
+static struct sarray *__objc_selector_array = 0; /* uid -> sel  !T:MUTEX */
+static struct sarray *__objc_selector_names = 0; /* uid -> name !T:MUTEX */
+static cache_ptr      __objc_selector_hash  = 0; /* name -> uid !T:MUTEX */
+
+/* Number of selectors stored in each of the above tables.  */
+unsigned int __objc_selector_max_index = 0;     /* !T:MUTEX */
+
+/* Forward-declare an internal function.  */
+static SEL
+__sel_register_typed_name (const char *name, const char *types,
+			   struct objc_selector *orig, BOOL is_const);
+
+void __objc_init_selector_tables (void)
+{
+  __objc_selector_array = sarray_new (SELECTOR_HASH_SIZE, 0);
+  __objc_selector_names = sarray_new (SELECTOR_HASH_SIZE, 0);
+  __objc_selector_hash
+    = objc_hash_new (SELECTOR_HASH_SIZE,
+		     (hash_func_type) objc_hash_string,
+		     (compare_func_type) objc_compare_strings);
+}  
+
+/* Register a bunch of selectors from the table of selectors in a
+   module.  'selectors' should not be NULL.  The list is terminated by
+   a selectors with a NULL sel_id.  The selectors are assumed to
+   contain the 'name' in the sel_id field; this is replaced with the
+   final selector id after they are registered.  */
+void
+__objc_register_selectors_from_module (struct objc_selector *selectors)
+{
+  int i;
+
+  for (i = 0; selectors[i].sel_id; ++i)
+    {
+      const char *name, *type;
+      name = (char *) selectors[i].sel_id;
+      type = (char *) selectors[i].sel_types;
+      /* Constructors are constant static data and we can safely store
+	 pointers to them in the runtime structures, so we set
+	 is_const == YES.  */
+      __sel_register_typed_name (name, type, (struct objc_selector *) &(selectors[i]),
+				 /* is_const */ YES);
+    }
+}
+
+/* This routine is given a class and records all of the methods in its
+   class structure in the record table.  */
+void
+__objc_register_selectors_from_class (Class class)
+{
+  struct objc_method_list * method_list;
+
+  method_list = class->methods;
+  while (method_list)
+    {
+      __objc_register_selectors_from_list (method_list);
+      method_list = method_list->method_next;
+    }
+}
+
+
+/* This routine is given a list of methods and records each of the
+   methods in the record table.  This is the routine that does the
+   actual recording work.
+
+   The name and type pointers in the method list must be permanent and
+   immutable.  */
+void
+__objc_register_selectors_from_list (struct objc_method_list *method_list)
+{
+  int i = 0;
+
+  objc_mutex_lock (__objc_runtime_mutex);
+  while (i < method_list->method_count)
+    {
+      Method method = &method_list->method_list[i];
+      if (method->method_name)
+	{
+	  method->method_name
+	    = __sel_register_typed_name ((const char *) method->method_name,
+					 method->method_types, 0, YES);
+	}
+      i += 1;
+    }
+  objc_mutex_unlock (__objc_runtime_mutex);
+}
+
+/* The same as __objc_register_selectors_from_list, but works on a
+   struct objc_method_description_list* instead of a struct
+   objc_method_list*.  This is only used for protocols, which have
+   lists of method descriptions, not methods.  */
+void
+__objc_register_selectors_from_description_list 
+(struct objc_method_description_list *method_list)
+{
+  int i = 0;
+  
+  objc_mutex_lock (__objc_runtime_mutex);
+  while (i < method_list->count)
+    {
+      struct objc_method_description *method = &method_list->list[i];
+      if (method->name)
+	{
+	  method->name
+	    = __sel_register_typed_name ((const char *) method->name,
+					 method->types, 0, YES);
+	}
+      i += 1;
+    }
+  objc_mutex_unlock (__objc_runtime_mutex);
+}
+
+/* Register instance methods as class methods for root classes.  */
+void __objc_register_instance_methods_to_class (Class class)
+{
+  struct objc_method_list *method_list;
+  struct objc_method_list *class_method_list;
+  int max_methods_no = 16;
+  struct objc_method_list *new_list;
+  Method curr_method;
+
+  /* Only if a root class. */
+  if (class->super_class)
+    return;
+
+  /* Allocate a method list to hold the new class methods.  */
+  new_list = objc_calloc (sizeof (struct objc_method_list)
+			  + sizeof (struct objc_method[max_methods_no]), 1);
+  method_list = class->methods;
+  class_method_list = class->class_pointer->methods;
+  curr_method = &new_list->method_list[0];
+  
+  /* Iterate through the method lists for the class.  */
+  while (method_list)
+    {
+      int i;
+      
+      /* Iterate through the methods from this method list.  */
+      for (i = 0; i < method_list->method_count; i++)
+	{
+	  Method mth = &method_list->method_list[i];
+	  if (mth->method_name
+	      && ! search_for_method_in_list (class_method_list,
+					      mth->method_name))
+	    {
+	      /* This instance method isn't a class method.  Add it
+		 into the new_list. */
+	      *curr_method = *mth;
+	      
+	      /* Reallocate the method list if necessary.  */
+	      if (++new_list->method_count == max_methods_no)
+		new_list =
+		  objc_realloc (new_list, sizeof (struct objc_method_list)
+				+ sizeof (struct 
+					  objc_method[max_methods_no += 16]));
+	      curr_method = &new_list->method_list[new_list->method_count];
+	    }
+	}
+
+      method_list = method_list->method_next;
+    }
+
+  /* If we created any new class methods then attach the method list
+     to the class.  */
+  if (new_list->method_count)
+    {
+      new_list =
+ 	objc_realloc (new_list, sizeof (struct objc_method_list)
+		      + sizeof (struct objc_method[new_list->method_count]));
+      new_list->method_next = class->class_pointer->methods;
+      class->class_pointer->methods = new_list;
+    }
+  else
+    objc_free(new_list);
+  
+  __objc_update_dispatch_table_for_class (class->class_pointer);
+}
+
+BOOL
+sel_isEqual (SEL s1, SEL s2)
+{
+  if (s1 == 0 || s2 == 0)
+    return s1 == s2;
+  else
+    return s1->sel_id == s2->sel_id;
+}
+
+/* Return YES iff t1 and t2 have same method types.  Ignore the
+   argframe layout.  */
+BOOL
+sel_types_match (const char *t1, const char *t2)
+{
+  if (! t1 || ! t2)
+    return NO;
+  while (*t1 && *t2)
+    {
+      if (*t1 == '+') t1++;
+      if (*t2 == '+') t2++;
+      while (isdigit ((unsigned char) *t1)) t1++;
+      while (isdigit ((unsigned char) *t2)) t2++;
+      /* xxx Remove these next two lines when qualifiers are put in
+	 all selectors, not just Protocol selectors.  */
+      t1 = objc_skip_type_qualifiers (t1);
+      t2 = objc_skip_type_qualifiers (t2);
+      if (! *t1 && ! *t2)
+	return YES;
+      if (*t1 != *t2)
+	return NO;
+      t1++;
+      t2++;
+    }
+  return NO;
+}
+
+/* Return selector representing name.  In the Modern API, you'd
+   normally use sel_registerTypedName() for this, which does the same
+   but would register the selector with the runtime if not registered
+   yet (if you only want to check for selectors without registering,
+   use sel_copyTypedSelectorList()).  */
+SEL
+sel_get_typed_uid (const char *name, const char *types)
+{
+  struct objc_list *l;
+  sidx i;
+
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name);
+  if (i == 0)
+    {
+      objc_mutex_unlock (__objc_runtime_mutex);
+      return 0;
+    }
+
+  for (l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i);
+       l; l = l->tail)
+    {
+      SEL s = (SEL) l->head;
+      if (types == 0 || s->sel_types == 0)
+	{
+	  if (s->sel_types == types)
+	    {
+	      objc_mutex_unlock (__objc_runtime_mutex);
+	      return s;
+	    }
+	}
+      else if (sel_types_match (s->sel_types, types))
+	{
+	  objc_mutex_unlock (__objc_runtime_mutex);
+	  return s;
+	}
+    }
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+  return 0;
+}
+
+/* Return selector representing name; prefer a selector with non-NULL
+   type.  In the Modern API, sel_getTypedSelector() is similar but
+   returns NULL if a typed selector couldn't be found.  */
+SEL
+sel_get_any_typed_uid (const char *name)
+{
+  struct objc_list *l;
+  sidx i;
+  SEL s = NULL;
+
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name);
+  if (i == 0)
+    {
+      objc_mutex_unlock (__objc_runtime_mutex);
+      return 0;
+    }
+
+  for (l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i);
+       l; l = l->tail)
+    {
+      s = (SEL) l->head;
+      if (s->sel_types)
+	{
+	  objc_mutex_unlock (__objc_runtime_mutex);
+	  return s;
+	}
+    }
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+  return s;
+}
+
+/* Return selector representing name.  */
+SEL
+sel_get_any_uid (const char *name)
+{
+  struct objc_list *l;
+  sidx i;
+
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name);
+  if (soffset_decode (i) == 0)
+    {
+      objc_mutex_unlock (__objc_runtime_mutex);
+      return 0;
+    }
+
+  l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i);
+  objc_mutex_unlock (__objc_runtime_mutex);
+
+  if (l == 0)
+    return 0;
+
+  return (SEL) l->head;
+}
+
+SEL
+sel_getTypedSelector (const char *name)
+{
+  sidx i;
+
+  if (name == NULL)
+    return NULL;
+  
+  objc_mutex_lock (__objc_runtime_mutex);
+  
+  /* Look for a typed selector.  */
+  i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name);
+  if (i != 0)
+    {
+      struct objc_list *l;
+      SEL returnValue = NULL;
+
+      for (l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i);
+	   l; l = l->tail)
+	{
+	  SEL s = (SEL) l->head;
+	  if (s->sel_types)
+	    {
+	      if (returnValue == NULL)
+		{
+		  /* First typed selector that we find.  Keep it in
+		     returnValue, but keep checking as we want to
+		     detect conflicts.  */
+		  returnValue = s;
+		}
+	      else
+		{
+		  /* We had already found a typed selectors, so we
+		     have multiple ones.  Double-check that they have
+		     different types, just in case for some reason we
+		     got duplicates with the same types.  If so, it's
+		     OK, we'll ignore the duplicate.  */
+		  if (returnValue->sel_types == s->sel_types)
+		    continue;
+		  else if (sel_types_match (returnValue->sel_types, s->sel_types))
+		    continue;
+		  else
+		    {
+		      /* The types of the two selectors are different;
+			 it's a conflict.  Too bad.  Return NULL.  */
+		      objc_mutex_unlock (__objc_runtime_mutex);
+		      return NULL;
+		    }
+		}
+	    }
+	}
+
+      if (returnValue != NULL)
+	{
+	  objc_mutex_unlock (__objc_runtime_mutex);
+	  return returnValue;
+	}
+    }
+
+  /* No typed selector found.  Return NULL.  */
+  objc_mutex_unlock (__objc_runtime_mutex);
+  return 0;
+}
+
+SEL *
+sel_copyTypedSelectorList (const char *name, unsigned int *numberOfReturnedSelectors)
+{
+  unsigned int count = 0;
+  SEL *returnValue = NULL;
+  sidx i;
+  
+  if (name == NULL)
+    {
+      if (numberOfReturnedSelectors)
+	*numberOfReturnedSelectors = 0;
+      return NULL;
+    }
+
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  /* Count how many selectors we have.  */
+  i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name);
+  if (i != 0)
+    {
+      struct objc_list *selector_list = NULL;
+      selector_list = (struct objc_list *) sarray_get_safe (__objc_selector_array, i);
+
+      /* Count how many selectors we have.  */
+      {
+	struct objc_list *l;
+	for (l = selector_list; l; l = l->tail)
+	  count++;
+      }
+
+      if (count != 0)
+	{
+	  /* Allocate enough memory to hold them.  */
+	  returnValue = (SEL *)(malloc (sizeof (SEL) * (count + 1)));
+	  
+	  /* Copy the selectors.  */
+	  {
+	    unsigned int j;
+	    for (j = 0; j < count; j++)
+	      {
+		returnValue[j] = (SEL)(selector_list->head);
+		selector_list = selector_list->tail;
+	      }
+	    returnValue[j] = NULL;
+	  }
+	}
+    }      
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+  
+  if (numberOfReturnedSelectors)
+    *numberOfReturnedSelectors = count;
+  
+  return returnValue;
+}
+
+/* Get the name of a selector.  If the selector is unknown, the empty
+   string "" is returned.  */ 
+const char *sel_getName (SEL selector)
+{
+  const char *ret;
+
+  if (selector == NULL)
+    return "<null selector>";
+  
+  objc_mutex_lock (__objc_runtime_mutex);
+  if ((soffset_decode ((sidx)selector->sel_id) > 0)
+      && (soffset_decode ((sidx)selector->sel_id) <= __objc_selector_max_index))
+    ret = sarray_get_safe (__objc_selector_names, (sidx) selector->sel_id);
+  else
+    ret = 0;
+  objc_mutex_unlock (__objc_runtime_mutex);
+  return ret;
+}
+
+/* Traditional GNU Objective-C Runtime API.  */
+const char *sel_get_name (SEL selector)
+{
+  if (selector == NULL)
+    return 0;
+
+  return sel_getName (selector);
+}
+
+BOOL
+sel_is_mapped (SEL selector)
+{
+  unsigned int idx = soffset_decode ((sidx)selector->sel_id);
+  return ((idx > 0) && (idx <= __objc_selector_max_index));
+}
+
+const char *sel_getTypeEncoding (SEL selector)
+{
+  if (selector)
+    return selector->sel_types;
+  else
+    return 0;
+}
+
+/* Traditional GNU Objective-C Runtime API.  */
+const char *sel_get_type (SEL selector)
+{
+  return sel_getTypeEncoding (selector);
+}
+
+/* The uninstalled dispatch table.  */
+extern struct sarray *__objc_uninstalled_dtable;
+
+/* __sel_register_typed_name allocates lots of struct objc_selector:s
+   of 8 (16, if pointers are 64 bits) bytes at startup. To reduce the
+   number of malloc calls and memory lost to malloc overhead, we
+   allocate objc_selector:s in blocks here. This is only called from
+   __sel_register_typed_name, and __sel_register_typed_name may only
+   be called when __objc_runtime_mutex is locked.
+
+   Note that the objc_selector:s allocated from
+   __sel_register_typed_name are never freed.
+
+   62 because 62 * sizeof (struct objc_selector) = 496 (992). This
+   should let malloc add some overhead and use a nice, round 512
+   (1024) byte chunk.  */
+#define SELECTOR_POOL_SIZE 62
+static struct objc_selector *selector_pool;
+static int selector_pool_left;
+
+static struct objc_selector *
+pool_alloc_selector(void)
+{
+  if (!selector_pool_left)
+    {
+      selector_pool = objc_malloc (sizeof (struct objc_selector)
+				   * SELECTOR_POOL_SIZE);
+      selector_pool_left = SELECTOR_POOL_SIZE;
+    }
+  return &selector_pool[--selector_pool_left];
+}
+
+/* Store the passed selector name in the selector record and return
+   its selector value (value returned by sel_get_uid).  Assume that
+   the calling function has locked down __objc_runtime_mutex.  The
+   'is_const' parameter tells us if the name and types parameters are
+   really constant or not.  If YES then they are constant and we can
+   just store the pointers.  If NO then we need to copy name and types
+   because the pointers may disappear later on.  If the 'orig'
+   parameter is not NULL, then we are registering a selector from a
+   module, and 'orig' is that selector.  In this case, we can put the
+   selector in the tables if needed, and orig->sel_id is updated with
+   the selector ID of the registered selector, and 'orig' is
+   returned.  */
+static SEL
+__sel_register_typed_name (const char *name, const char *types, 
+			   struct objc_selector *orig, BOOL is_const)
+{
+  struct objc_selector *j;
+  sidx i;
+  struct objc_list *l;
+
+  i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name);
+  if (soffset_decode (i) != 0)
+    {
+      /* There are already selectors with that name.  Examine them to
+	 see if the one we're registering already exists.  */
+      for (l = (struct objc_list *)sarray_get_safe (__objc_selector_array, i);
+	   l; l = l->tail)
+	{
+	  SEL s = (SEL)l->head;
+	  if (types == 0 || s->sel_types == 0)
+	    {
+	      if (s->sel_types == types)
+		{
+		  if (orig)
+		    {
+		      orig->sel_id = (void *)i;
+		      return orig;
+		    }
+		  else
+		    return s;
+		}
+	    }
+	  else if (sel_types_match (s->sel_types, types))
+	    {
+	      if (orig)
+		{
+		  orig->sel_id = (void *)i;
+		  return orig;
+		}
+	      else
+		return s;
+	    }
+	}
+      /* A selector with this specific name/type combination does not
+	 exist yet.  We need to register it.  */
+      if (orig)
+	j = orig;
+      else
+	j = pool_alloc_selector ();
+      
+      j->sel_id = (void *)i;
+      /* Can we use the pointer or must we copy types ?  Don't copy if
+	 NULL.  */
+      if ((is_const) || (types == 0))
+	j->sel_types = types;
+      else
+	{
+	  j->sel_types = (char *)objc_malloc (strlen (types) + 1);
+	  strcpy ((char *)j->sel_types, types);
+	}
+      l = (struct objc_list *)sarray_get_safe (__objc_selector_array, i);
+    }
+  else
+    {
+      /* There are no other selectors with this name registered in the
+	 runtime tables.  */
+      const char *new_name;
+
+      /* Determine i.  */
+      __objc_selector_max_index += 1;
+      i = soffset_encode (__objc_selector_max_index);
+
+      /* Prepare the selector.  */
+      if (orig)
+	j = orig;
+      else
+	j = pool_alloc_selector ();
+      
+      j->sel_id = (void *)i;
+      /* Can we use the pointer or must we copy types ?  Don't copy if
+	 NULL.  */
+      if (is_const || (types == 0))
+	j->sel_types = types;
+      else
+	{
+	  j->sel_types = (char *)objc_malloc (strlen (types) + 1);
+	  strcpy ((char *)j->sel_types, types);
+	}
+
+      /* Since this is the first selector with this name, we need to
+	 register the correspondence between 'i' (the sel_id) and
+	 'name' (the actual string) in __objc_selector_names and
+	 __objc_selector_hash.  */
+      
+      /* Can we use the pointer or must we copy name ?  Don't copy if
+	 NULL.  (FIXME: Can the name really be NULL here ?)  */
+      if (is_const || (name == 0))
+	new_name = name;
+      else
+	{
+	  new_name = (char *)objc_malloc (strlen (name) + 1);
+	  strcpy ((char *)new_name, name);
+	}
+      
+      /* This maps the sel_id to the name.  */
+      sarray_at_put_safe (__objc_selector_names, i, (void *)new_name);
+
+      /* This maps the name to the sel_id.  */
+      objc_hash_add (&__objc_selector_hash, (void *)new_name, (void *)i);
+
+      l = 0;
+    }
+
+  DEBUG_PRINTF ("Record selector %s[%s] as: %ld\n", name, types, 
+		(long)soffset_decode (i));
+
+  /* Now add the selector to the list of selectors with that id.  */
+  l = list_cons ((void *)j, l);
+  sarray_at_put_safe (__objc_selector_array, i, (void *)l);
+
+  sarray_realloc (__objc_uninstalled_dtable, __objc_selector_max_index + 1);
+  
+  return (SEL)j;
+}
+
+SEL
+sel_registerName (const char *name)
+{
+  SEL ret;
+
+  if (name == NULL)
+    return NULL;
+    
+  objc_mutex_lock (__objc_runtime_mutex);
+  /* Assume that name is not constant static memory and needs to be
+     copied before put into a runtime structure.  is_const == NO.  */
+  ret = __sel_register_typed_name (name, 0, 0, NO);
+  objc_mutex_unlock (__objc_runtime_mutex);
+  
+  return ret;
+}
+
+/* Traditional GNU Objective-C Runtime API.  */
+SEL
+sel_register_name (const char *name)
+{
+  return sel_registerName (name);
+}
+
+SEL
+sel_registerTypedName (const char *name, const char *type)
+{
+  SEL ret;
+
+  if (name == NULL)
+    return NULL;
+
+  objc_mutex_lock (__objc_runtime_mutex);
+  /* Assume that name and type are not constant static memory and need
+     to be copied before put into a runtime structure.  is_const ==
+     NO.  */
+  ret = __sel_register_typed_name (name, type, 0, NO);
+  objc_mutex_unlock (__objc_runtime_mutex);
+  
+  return ret;
+}
+
+SEL
+sel_register_typed_name (const char *name, const char *type)
+{
+  return sel_registerTypedName (name, type);
+}
+
+/* Return the selector representing name.  */
+SEL
+sel_getUid (const char *name)
+{
+  return sel_registerTypedName (name, 0);
+}
+
+/* Traditional GNU Objective-C Runtime API.  */
+SEL
+sel_get_uid (const char *name)
+{
+  return sel_getUid (name);
+}
diff --git a/libobjc/sendmsg.c b/libobjc/sendmsg.c
new file mode 100644
index 000000000..0cb375db3
--- /dev/null
+++ b/libobjc/sendmsg.c
@@ -0,0 +1,1076 @@
+/* GNU Objective C Runtime message lookup 
+   Copyright (C) 1993, 1995, 1996, 1997, 1998,
+   2001, 2002, 2004, 2009, 2010 Free Software Foundation, Inc.
+   Contributed by Kresten Krab Thorup
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+/* Uncommented the following line to enable debug logging.  Use this
+   only while debugging the runtime.  */
+/* #define DEBUG 1 */
+
+/* FIXME: This file has no business including tm.h.  */
+/* FIXME: This should be using libffi instead of __builtin_apply
+   and friends.  */
+
+#include "objc-private/common.h"
+#include "objc-private/error.h"
+#include "tconfig.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "objc/runtime.h"
+#include "objc/message.h"          /* For objc_msg_lookup(), objc_msg_lookup_super().  */
+#include "objc/thr.h"
+#include "objc-private/module-abi-8.h"
+#include "objc-private/runtime.h"
+#include "objc-private/sarray.h"
+#include "objc-private/selector.h" /* For sel_is_mapped() */
+#include "runtime-info.h"
+#include <assert.h> /* For assert */
+#include <string.h> /* For strlen */
+
+/* This is how we hack STRUCT_VALUE to be 1 or 0.   */
+#define gen_rtx(args...) 1
+#define gen_rtx_MEM(args...) 1
+#define gen_rtx_REG(args...) 1
+/* Already defined in gcc/coretypes.h. So prevent double definition warning.  */
+#undef rtx
+#define rtx int
+
+#if ! defined (STRUCT_VALUE) || STRUCT_VALUE == 0
+#define INVISIBLE_STRUCT_RETURN 1
+#else
+#define INVISIBLE_STRUCT_RETURN 0
+#endif
+
+/* The uninstalled dispatch table.  */
+struct sarray *__objc_uninstalled_dtable = 0;   /* !T:MUTEX */
+
+/* Two hooks for method forwarding. If either is set, it is invoked to
+ * return a function that performs the real forwarding.  If both are
+ * set, the result of __objc_msg_forward2 will be preferred over that
+ * of __objc_msg_forward.  If both return NULL or are unset, the
+ * libgcc based functions (__builtin_apply and friends) are used.  */
+IMP (*__objc_msg_forward) (SEL) = NULL;
+IMP (*__objc_msg_forward2) (id, SEL) = NULL;
+
+/* Send +initialize to class.  */
+static void __objc_send_initialize (Class);
+
+static void __objc_install_dispatch_table_for_class (Class);
+
+/* Forward declare some functions.  */
+static void __objc_init_install_dtable (id, SEL);
+
+/* Various forwarding functions that are used based upon the
+   return type for the selector.
+   __objc_block_forward for structures.
+   __objc_double_forward for floats/doubles.
+   __objc_word_forward for pointers or types that fit in registers.  */
+static double __objc_double_forward (id, SEL, ...);
+static id __objc_word_forward (id, SEL, ...);
+typedef struct { id many[8]; } __big;
+#if INVISIBLE_STRUCT_RETURN 
+static __big 
+#else
+static id
+#endif
+__objc_block_forward (id, SEL, ...);
+static struct objc_method * search_for_method_in_hierarchy (Class class, SEL sel);
+struct objc_method * search_for_method_in_list (struct objc_method_list * list, SEL op);
+id nil_method (id, SEL);
+
+/* Given a selector, return the proper forwarding implementation.  */
+inline
+IMP
+__objc_get_forward_imp (id rcv, SEL sel)
+{
+  /* If a custom forwarding hook was registered, try getting a
+     forwarding function from it. There are two forward routine hooks,
+     one that takes the receiver as an argument and one that does
+     not.  */
+  if (__objc_msg_forward2)
+    {
+      IMP result;
+      if ((result = __objc_msg_forward2 (rcv, sel)) != NULL)
+       return result;
+    }
+  if (__objc_msg_forward)
+    {
+      IMP result;
+      if ((result = __objc_msg_forward (sel)) != NULL) 
+        return result;
+    }
+
+  /* In all other cases, use the default forwarding functions built
+     using __builtin_apply and friends.  */
+    {
+      const char *t = sel->sel_types;
+      
+      if (t && (*t == '[' || *t == '(' || *t == '{')
+#ifdef OBJC_MAX_STRUCT_BY_VALUE
+          && objc_sizeof_type (t) > OBJC_MAX_STRUCT_BY_VALUE
+#endif
+          )
+        return (IMP)__objc_block_forward;
+      else if (t && (*t == 'f' || *t == 'd'))
+        return (IMP)__objc_double_forward;
+      else
+        return (IMP)__objc_word_forward;
+    }
+}
+
+/* Selectors for +resolveClassMethod: and +resolveInstanceMethod:.
+   These are set up at startup.  */
+static SEL selector_resolveClassMethod = NULL;
+static SEL selector_resolveInstanceMethod = NULL;
+
+/* Internal routines use to resolve a class method using
+   +resolveClassMethod:.  'class' is always a non-Nil class (*not* a
+   meta-class), and 'sel' is the selector that we are trying to
+   resolve.  This must be called when class is not Nil, and the
+   dispatch table for class methods has already been installed.
+
+   This routine tries to call +resolveClassMethod: to give an
+   opportunity to resolve the method.  If +resolveClassMethod: returns
+   YES, it tries looking up the method again, and if found, it returns
+   it.  Else, it returns NULL.  */
+static inline
+IMP
+__objc_resolve_class_method (Class class, SEL sel)
+{
+  /* We need to lookup +resolveClassMethod:.  */
+  BOOL (*resolveMethodIMP) (id, SEL, SEL);
+
+  /* The dispatch table for class methods is already installed and we
+     don't want any forwarding to happen when looking up this method,
+     so we just look it up directly.  Note that if 'sel' is precisely
+     +resolveClassMethod:, this would look it up yet again and find
+     nothing.  That's no problem and there's no recursion.  */
+  resolveMethodIMP = (BOOL (*) (id, SEL, SEL))sarray_get_safe
+    (class->class_pointer->dtable, (size_t) selector_resolveClassMethod->sel_id);
+
+  if (resolveMethodIMP && resolveMethodIMP ((id)class, selector_resolveClassMethod, sel))
+    {
+      /* +resolveClassMethod: returned YES.  Look the method up again.
+	 We already know the dtable is installed.  */
+      
+      /* TODO: There is the case where +resolveClassMethod: is buggy
+	 and returned YES without actually adding the method.  We
+	 could maybe print an error message.  */
+      return sarray_get_safe (class->class_pointer->dtable, (size_t) sel->sel_id);
+    }
+
+  return NULL;
+}
+
+/* Internal routines use to resolve a instance method using
+   +resolveInstanceMethod:.  'class' is always a non-Nil class, and
+   'sel' is the selector that we are trying to resolve.  This must be
+   called when class is not Nil, and the dispatch table for instance
+   methods has already been installed.
+
+   This routine tries to call +resolveInstanceMethod: to give an
+   opportunity to resolve the method.  If +resolveInstanceMethod:
+   returns YES, it tries looking up the method again, and if found, it
+   returns it.  Else, it returns NULL.  */
+static inline
+IMP
+__objc_resolve_instance_method (Class class, SEL sel)
+{
+  /* We need to lookup +resolveInstanceMethod:.  */
+  BOOL (*resolveMethodIMP) (id, SEL, SEL);
+
+  /* The dispatch table for class methods may not be already installed
+     so we have to install it if needed.  */
+  resolveMethodIMP = sarray_get_safe (class->class_pointer->dtable,
+				      (size_t) selector_resolveInstanceMethod->sel_id);
+  if (resolveMethodIMP == 0)
+    {
+      /* Try again after installing the dtable.  */
+      if (class->class_pointer->dtable == __objc_uninstalled_dtable)
+	{
+	  objc_mutex_lock (__objc_runtime_mutex);
+	  if (class->class_pointer->dtable == __objc_uninstalled_dtable)
+	    __objc_install_dispatch_table_for_class (class->class_pointer);
+	  objc_mutex_unlock (__objc_runtime_mutex);
+	}
+      resolveMethodIMP = sarray_get_safe (class->class_pointer->dtable,
+					  (size_t) selector_resolveInstanceMethod->sel_id);	      
+    }
+
+  if (resolveMethodIMP && resolveMethodIMP ((id)class, selector_resolveInstanceMethod, sel))
+    {
+      /* +resolveInstanceMethod: returned YES.  Look the method up
+	 again.  We already know the dtable is installed.  */
+      
+      /* TODO: There is the case where +resolveInstanceMethod: is
+	 buggy and returned YES without actually adding the method.
+	 We could maybe print an error message.  */
+      return sarray_get_safe (class->dtable, (size_t) sel->sel_id);	
+    }
+
+  return NULL;
+}
+
+/* Given a class and selector, return the selector's
+   implementation.  */
+inline
+IMP
+get_imp (Class class, SEL sel)
+{
+  /* In a vanilla implementation we would first check if the dispatch
+     table is installed.  Here instead, to get more speed in the
+     standard case (that the dispatch table is installed) we first try
+     to get the imp using brute force.  Only if that fails, we do what
+     we should have been doing from the very beginning, that is, check
+     if the dispatch table needs to be installed, install it if it's
+     not installed, and retrieve the imp from the table if it's
+     installed.  */
+  void *res = sarray_get_safe (class->dtable, (size_t) sel->sel_id);
+  if (res == 0)
+    {
+      /* Not a valid method.  */
+      if (class->dtable == __objc_uninstalled_dtable)
+	{
+	  /* The dispatch table needs to be installed.  */
+	  objc_mutex_lock (__objc_runtime_mutex);
+
+	   /* Double-checked locking pattern: Check
+	      __objc_uninstalled_dtable again in case another thread
+	      installed the dtable while we were waiting for the lock
+	      to be released.  */
+         if (class->dtable == __objc_uninstalled_dtable)
+           {
+             __objc_install_dispatch_table_for_class (class);
+           }
+
+	  objc_mutex_unlock (__objc_runtime_mutex);
+	  /* Call ourselves with the installed dispatch table and get
+	     the real method.  */
+	  res = get_imp (class, sel);
+	}
+      else
+	{
+	  /* The dispatch table has been installed.  */
+
+         /* Get the method from the dispatch table (we try to get it
+	    again in case another thread has installed the dtable just
+	    after we invoked sarray_get_safe, but before we checked
+	    class->dtable == __objc_uninstalled_dtable).  */
+	  res = sarray_get_safe (class->dtable, (size_t) sel->sel_id);
+	  if (res == 0)
+	    {
+	      /* The dispatch table has been installed, and the method
+		 is not in the dispatch table.  So the method just
+		 doesn't exist for the class.  */
+
+	      /* Try going through the +resolveClassMethod: or
+		 +resolveInstanceMethod: process.  */
+	      if (CLS_ISMETA (class))
+		{
+		  /* We have the meta class, but we need to invoke the
+		     +resolveClassMethod: method on the class.  So, we
+		     need to obtain the class from the meta class,
+		     which we do using the fact that both the class
+		     and the meta-class have the same name.  */
+		  Class realClass = objc_lookUpClass (class->name);
+		  if (realClass)
+		    res = __objc_resolve_class_method (realClass, sel);
+		}
+	      else
+		res = __objc_resolve_instance_method (class, sel);
+
+	      if (res == 0)
+		{
+		  /* If that fails, then return the forwarding
+		     implementation.  We don't know the receiver (only
+		     its class), so we have to pass 'nil' as the first
+		     argument.  Passing the class as first argument is
+		     wrong because the class is not the receiver; it
+		     can result in us calling a class method when we
+		     want an instance method of the same name.  */
+		  res = __objc_get_forward_imp (nil, sel);
+		}
+	    }
+	}
+    }
+  return res;
+}
+
+/* The new name of get_imp().  */
+IMP
+class_getMethodImplementation (Class class_, SEL selector)
+{
+  if (class_ == Nil  ||  selector == NULL)
+    return NULL;
+
+  /* get_imp is inlined, so we're good.  */
+  return get_imp (class_, selector);
+}
+
+/* Given a method, return its implementation.  This has been replaced
+   by method_getImplementation() in the modern API.  */
+IMP
+method_get_imp (struct objc_method * method)
+{
+  return (method != (struct objc_method *)0) ? method->method_imp : (IMP)0;
+}
+
+/* Query if an object can respond to a selector, returns YES if the
+   object implements the selector otherwise NO.  Does not check if the
+   method can be forwarded.  */
+inline
+BOOL
+__objc_responds_to (id object, SEL sel)
+{
+  void *res;
+
+  /* Install dispatch table if need be.  */
+  if (object->class_pointer->dtable == __objc_uninstalled_dtable)
+    {
+      objc_mutex_lock (__objc_runtime_mutex);
+      if (object->class_pointer->dtable == __objc_uninstalled_dtable)
+	{
+	  __objc_install_dispatch_table_for_class (object->class_pointer);
+	}
+      objc_mutex_unlock (__objc_runtime_mutex);
+    }
+
+  /* Get the method from the dispatch table.  */
+  res = sarray_get_safe (object->class_pointer->dtable, (size_t) sel->sel_id);
+  return (res != 0);
+}
+
+BOOL
+class_respondsToSelector (Class class_, SEL selector)
+{
+  void *res;
+
+  if (class_ == Nil  ||  selector == NULL)
+    return NO;
+
+  /* Install dispatch table if need be.  */
+  if (class_->dtable == __objc_uninstalled_dtable)
+    {
+      objc_mutex_lock (__objc_runtime_mutex);
+      if (class_->dtable == __objc_uninstalled_dtable)
+	{
+	  __objc_install_dispatch_table_for_class (class_);
+	}
+      objc_mutex_unlock (__objc_runtime_mutex);
+    }
+
+  /* Get the method from the dispatch table.  */
+  res = sarray_get_safe (class_->dtable, (size_t) selector->sel_id);
+  return (res != 0);
+}
+
+/* This is the lookup function.  All entries in the table are either a
+   valid method *or* zero.  If zero then either the dispatch table
+   needs to be installed or it doesn't exist and forwarding is
+   attempted.  */
+IMP
+objc_msg_lookup (id receiver, SEL op)
+{
+  IMP result;
+  if (receiver)
+    {
+      result = sarray_get_safe (receiver->class_pointer->dtable, 
+				(sidx)op->sel_id);
+      if (result == 0)
+	{
+	  /* Not a valid method.  */
+	  if (receiver->class_pointer->dtable == __objc_uninstalled_dtable)
+	    {
+	      /* The dispatch table needs to be installed.  This
+		 happens on the very first method call to the
+		 class.  */
+	      __objc_init_install_dtable (receiver, op);
+
+	      /* Get real method for this in newly installed
+		 dtable.  */
+	      result = get_imp (receiver->class_pointer, op);
+	    }
+	  else
+	    {
+	      /* The dispatch table has been installed.  Check again
+		 if the method exists (just in case the dispatch table
+		 has been installed by another thread after we did the
+		 previous check that the method exists).  */
+	      result = sarray_get_safe (receiver->class_pointer->dtable,
+					(sidx)op->sel_id);
+	      if (result == 0)
+		{
+		  /* Try going through the +resolveClassMethod: or
+		     +resolveInstanceMethod: process.  */
+		  if (CLS_ISMETA (receiver->class_pointer))
+		    result = __objc_resolve_class_method ((Class)receiver, op);
+		  else
+		    result = __objc_resolve_instance_method (receiver->class_pointer,
+							     op);
+
+		  if (result == 0)
+		    {
+		      /* If the method still just doesn't exist for
+			 the class, attempt to forward the method.  */
+		      result = __objc_get_forward_imp (receiver, op);
+		    }
+		}
+	    }
+	}
+      return result;
+    }
+  else
+    return (IMP)nil_method;
+}
+
+IMP
+objc_msg_lookup_super (struct objc_super *super, SEL sel)
+{
+  if (super->self)
+    return get_imp (super->super_class, sel);
+  else
+    return (IMP)nil_method;
+}
+
+/* Temporarily defined here until objc_msg_sendv() goes away.  */
+char *method_get_first_argument (struct objc_method *,
+				 arglist_t argframe, 
+				 const char **type);
+char *method_get_next_argument (arglist_t argframe, 
+				const char **type);
+int method_get_sizeof_arguments (struct objc_method *);
+
+struct objc_method *
+class_get_instance_method (Class class, SEL op);
+
+retval_t
+objc_msg_sendv (id object, SEL op, arglist_t arg_frame)
+{
+  struct objc_method *m = class_get_instance_method (object->class_pointer, op);
+  const char *type;
+  *((id *) method_get_first_argument (m, arg_frame, &type)) = object;
+  *((SEL *) method_get_next_argument (arg_frame, &type)) = op;
+  return __builtin_apply ((apply_t) m->method_imp, 
+			  arg_frame,
+			  method_get_sizeof_arguments (m));
+}
+
+void
+__objc_init_dispatch_tables ()
+{
+  __objc_uninstalled_dtable = sarray_new (200, 0);
+
+  /* TODO: It would be cool to register typed selectors here.  */
+  selector_resolveClassMethod = sel_registerName ("resolveClassMethod:");
+  selector_resolveInstanceMethod  =sel_registerName ("resolveInstanceMethod:");
+}
+
+/* This function is called by objc_msg_lookup when the dispatch table
+   needs to be installed; thus it is called once for each class,
+   namely when the very first message is sent to it.  */
+static void
+__objc_init_install_dtable (id receiver, SEL op __attribute__ ((__unused__)))
+{
+  objc_mutex_lock (__objc_runtime_mutex);
+  
+  /* This may happen, if the programmer has taken the address of a
+     method before the dtable was initialized... too bad for him!  */
+  if (receiver->class_pointer->dtable != __objc_uninstalled_dtable)
+    {
+      objc_mutex_unlock (__objc_runtime_mutex);
+      return;
+    }
+  
+  if (CLS_ISCLASS (receiver->class_pointer))
+    {
+      /* receiver is an ordinary object.  */
+      assert (CLS_ISCLASS (receiver->class_pointer));
+
+      /* Install instance methods table.  */
+      __objc_install_dispatch_table_for_class (receiver->class_pointer);
+
+      /* Call +initialize -- this will in turn install the factory
+	 dispatch table if not already done. :-)  */
+      __objc_send_initialize (receiver->class_pointer);
+    }
+  else
+    {
+      /* receiver is a class object.  */
+      assert (CLS_ISCLASS ((Class)receiver));
+      assert (CLS_ISMETA (receiver->class_pointer));
+
+      /* Install real dtable for factory methods.  */
+      __objc_install_dispatch_table_for_class (receiver->class_pointer);
+
+      __objc_send_initialize ((Class)receiver);
+    }
+  objc_mutex_unlock (__objc_runtime_mutex);
+}
+
+/* Install dummy table for class which causes the first message to
+   that class (or instances hereof) to be initialized properly.  */
+void
+__objc_install_premature_dtable (Class class)
+{
+  assert (__objc_uninstalled_dtable);
+  class->dtable = __objc_uninstalled_dtable;
+}   
+
+/* Send +initialize to class if not already done.  */
+static void
+__objc_send_initialize (Class class)
+{
+  /* This *must* be a class object.  */
+  assert (CLS_ISCLASS (class));
+  assert (! CLS_ISMETA (class));
+
+  if (! CLS_ISINITIALIZED (class))
+    {
+      DEBUG_PRINTF ("+initialize: need to initialize class '%s'\n", class->name);
+      CLS_SETINITIALIZED (class);
+      CLS_SETINITIALIZED (class->class_pointer);
+
+      /* Create the garbage collector type memory description.  */
+      __objc_generate_gc_type_description (class);
+
+      if (class->super_class)
+	__objc_send_initialize (class->super_class);
+
+      {
+	SEL op = sel_registerName ("initialize");
+	IMP imp = 0;
+        struct objc_method_list * method_list = class->class_pointer->methods;
+	
+        while (method_list)
+	  {
+	    int i;
+	    struct objc_method * method;
+	    
+	    for (i = 0; i < method_list->method_count; i++)
+	      {
+		method = &(method_list->method_list[i]);
+		if (method->method_name
+		    && method->method_name->sel_id == op->sel_id)
+		  {
+		    imp = method->method_imp;
+		    break;
+		  }
+	      }
+	    
+	    if (imp)
+	      break;
+	    
+	    method_list = method_list->method_next;
+	  }
+	if (imp)
+	  {
+	    DEBUG_PRINTF (" begin of [%s +initialize]\n", class->name);
+	    (*imp) ((id) class, op);
+	    DEBUG_PRINTF (" end of [%s +initialize]\n", class->name);
+	  }
+#ifdef DEBUG
+	else
+	  {
+	    DEBUG_PRINTF (" class '%s' has no +initialize method\n", class->name);	    
+	  }
+#endif
+      }
+    }
+}
+
+/* Walk on the methods list of class and install the methods in the
+   reverse order of the lists.  Since methods added by categories are
+   before the methods of class in the methods list, this allows
+   categories to substitute methods declared in class.  However if
+   more than one category replaces the same method nothing is
+   guaranteed about what method will be used.  Assumes that
+   __objc_runtime_mutex is locked down.  */
+static void
+__objc_install_methods_in_dtable (Class class, struct objc_method_list * method_list)
+{
+  int i;
+  
+  if (! method_list)
+    return;
+  
+  if (method_list->method_next)
+    __objc_install_methods_in_dtable (class, method_list->method_next);
+  
+  for (i = 0; i < method_list->method_count; i++)
+    {
+      struct objc_method * method = &(method_list->method_list[i]);
+      sarray_at_put_safe (class->dtable,
+			  (sidx) method->method_name->sel_id,
+			  method->method_imp);
+    }
+}
+
+/* Assumes that __objc_runtime_mutex is locked down.  */
+static void
+__objc_install_dispatch_table_for_class (Class class)
+{
+  Class super;
+
+  /* If the class has not yet had its class links resolved, we must
+     re-compute all class links.  */
+  if (! CLS_ISRESOLV (class))
+    __objc_resolve_class_links ();
+
+  DEBUG_PRINTF ("__objc_install_dispatch_table_for_class (%s)\n", class->name);
+  
+  super = class->super_class;
+
+  if (super != 0 && (super->dtable == __objc_uninstalled_dtable))
+    __objc_install_dispatch_table_for_class (super);
+
+  /* Allocate dtable if necessary.  */
+  if (super == 0)
+    {
+      objc_mutex_lock (__objc_runtime_mutex);
+      class->dtable = sarray_new (__objc_selector_max_index, 0);
+      objc_mutex_unlock (__objc_runtime_mutex);
+    }
+  else
+    class->dtable = sarray_lazy_copy (super->dtable);
+
+  __objc_install_methods_in_dtable (class, class->methods);
+}
+
+void
+__objc_update_dispatch_table_for_class (Class class)
+{
+  Class next;
+  struct sarray *arr;
+
+  /* Not yet installed -- skip it.  */
+  if (class->dtable == __objc_uninstalled_dtable) 
+    return;
+
+  DEBUG_PRINTF (" _objc_update_dispatch_table_for_class (%s)\n", class->name);
+
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  arr = class->dtable;
+  __objc_install_premature_dtable (class); /* someone might require it... */
+  sarray_free (arr);			   /* release memory */
+  
+  /* Could have been lazy...  */
+  __objc_install_dispatch_table_for_class (class); 
+
+  if (class->subclass_list)	/* Traverse subclasses.  */
+    for (next = class->subclass_list; next; next = next->sibling_class)
+      __objc_update_dispatch_table_for_class (next);
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+}
+
+/* This function adds a method list to a class.  This function is
+   typically called by another function specific to the run-time.  As
+   such this function does not worry about thread safe issues.
+
+   This one is only called for categories. Class objects have their
+   methods installed right away, and their selectors are made into
+   SEL's by the function __objc_register_selectors_from_class.  */
+void
+class_add_method_list (Class class, struct objc_method_list * list)
+{
+  /* Passing of a linked list is not allowed.  Do multiple calls.  */
+  assert (! list->method_next);
+
+  __objc_register_selectors_from_list(list);
+
+  /* Add the methods to the class's method list.  */
+  list->method_next = class->methods;
+  class->methods = list;
+
+  /* Update the dispatch table of class.  */
+  __objc_update_dispatch_table_for_class (class);
+}
+
+struct objc_method *
+class_get_instance_method (Class class, SEL op)
+{
+  return search_for_method_in_hierarchy (class, op);
+}
+
+struct objc_method *
+class_get_class_method (MetaClass class, SEL op)
+{
+  return search_for_method_in_hierarchy (class, op);
+}
+
+struct objc_method *
+class_getInstanceMethod (Class class_, SEL selector)
+{
+  struct objc_method *m;
+
+  if (class_ == Nil  ||  selector == NULL)
+    return NULL;
+
+  m = search_for_method_in_hierarchy (class_, selector);
+  if (m)
+    return m;
+
+  /* Try going through +resolveInstanceMethod:, and do the search
+     again if successful.  */
+  if (__objc_resolve_instance_method (class_, selector))
+    return search_for_method_in_hierarchy (class_, selector);
+
+  return NULL;
+}
+
+struct objc_method *
+class_getClassMethod (Class class_, SEL selector)
+{
+  struct objc_method *m;
+
+  if (class_ == Nil  ||  selector == NULL)
+    return NULL;
+  
+  m = search_for_method_in_hierarchy (class_->class_pointer, 
+				      selector);
+  if (m)
+    return m;
+
+  /* Try going through +resolveClassMethod:, and do the search again
+     if successful.  */
+  if (__objc_resolve_class_method (class_, selector))
+    return search_for_method_in_hierarchy (class_->class_pointer, 
+					   selector);    
+
+  return NULL;
+}
+
+BOOL
+class_addMethod (Class class_, SEL selector, IMP implementation,
+		 const char *method_types)
+{
+  struct objc_method_list *method_list;
+  struct objc_method *method;
+  const char *method_name;
+
+  if (class_ == Nil  ||  selector == NULL  ||  implementation == NULL  
+      || method_types == NULL  || (strcmp (method_types, "") == 0))
+    return NO;
+
+  method_name = sel_getName (selector);
+  if (method_name == NULL)
+    return NO;
+
+  /* If the method already exists in the class, return NO.  It is fine
+     if the method already exists in the superclass; in that case, we
+     are overriding it.  */
+  if (CLS_IS_IN_CONSTRUCTION (class_))
+    {
+      /* The class only contains a list of methods; they have not been
+	 registered yet, ie, the method_name of each of them is still
+	 a string, not a selector.  Iterate manually over them to
+	 check if we have already added the method.  */
+      struct objc_method_list * method_list = class_->methods;
+      while (method_list)
+	{
+	  int i;
+	  
+	  /* Search the method list.  */
+	  for (i = 0; i < method_list->method_count; ++i)
+	    {
+	      struct objc_method * method = &method_list->method_list[i];
+	      
+	      if (method->method_name
+		  && strcmp ((char *)method->method_name, method_name) == 0)
+		return NO;
+	    }
+	  
+	  /* The method wasn't found.  Follow the link to the next list of
+	     methods.  */
+	  method_list = method_list->method_next;
+	}
+      /* The method wasn't found.  It's a new one.  Go ahead and add
+	 it.  */
+    }
+  else
+    {
+      /* Do the standard lookup.  This assumes the selectors are
+	 mapped.  */
+      if (search_for_method_in_list (class_->methods, selector))
+	return NO;
+    }
+
+  method_list = (struct objc_method_list *)objc_calloc (1, sizeof (struct objc_method_list));
+  method_list->method_count = 1;
+
+  method = &(method_list->method_list[0]);
+  method->method_name = objc_malloc (strlen (method_name) + 1);
+  strcpy ((char *)method->method_name, method_name);
+
+  method->method_types = objc_malloc (strlen (method_types) + 1);
+  strcpy ((char *)method->method_types, method_types);
+  
+  method->method_imp = implementation;
+  
+  if (CLS_IS_IN_CONSTRUCTION (class_))
+    {
+      /* We only need to add the method to the list.  It will be
+	 registered with the runtime when the class pair is registered
+	 (if ever).  */
+      method_list->method_next = class_->methods;
+      class_->methods = method_list;
+    }
+  else
+    {
+      /* Add the method to a live class.  */
+      objc_mutex_lock (__objc_runtime_mutex);
+      class_add_method_list (class_, method_list);
+      objc_mutex_unlock (__objc_runtime_mutex);
+    }
+
+  return YES;
+}
+
+IMP
+class_replaceMethod (Class class_, SEL selector, IMP implementation,
+		     const char *method_types)
+{
+  struct objc_method * method;
+
+  if (class_ == Nil  ||  selector == NULL  ||  implementation == NULL
+      || method_types == NULL)
+    return NULL;
+
+  method = search_for_method_in_hierarchy (class_, selector);
+
+  if (method)
+    {
+      return method_setImplementation (method, implementation);
+    }
+  else
+    {
+      class_addMethod (class_, selector, implementation, method_types);
+      return NULL;
+    }
+}
+
+/* Search for a method starting from the current class up its
+   hierarchy.  Return a pointer to the method's method structure if
+   found.  NULL otherwise.  */
+static struct objc_method *
+search_for_method_in_hierarchy (Class cls, SEL sel)
+{
+  struct objc_method * method = NULL;
+  Class class;
+
+  if (! sel_is_mapped (sel))
+    return NULL;
+
+  /* Scan the method list of the class.  If the method isn't found in
+     the list then step to its super class.  */
+  for (class = cls; ((! method) && class); class = class->super_class)
+    method = search_for_method_in_list (class->methods, sel);
+
+  return method;
+}
+
+
+
+/* Given a linked list of method and a method's name.  Search for the
+   named method's method structure.  Return a pointer to the method's
+   method structure if found.  NULL otherwise.  */  
+struct objc_method *
+search_for_method_in_list (struct objc_method_list * list, SEL op)
+{
+  struct objc_method_list * method_list = list;
+
+  if (! sel_is_mapped (op))
+    return NULL;
+
+  /* If not found then we'll search the list.  */
+  while (method_list)
+    {
+      int i;
+
+      /* Search the method list.  */
+      for (i = 0; i < method_list->method_count; ++i)
+        {
+          struct objc_method * method = &method_list->method_list[i];
+
+          if (method->method_name)
+            if (method->method_name->sel_id == op->sel_id)
+              return method;
+        }
+
+      /* The method wasn't found.  Follow the link to the next list of
+         methods.  */
+      method_list = method_list->method_next;
+    }
+
+  return NULL;
+}
+
+static retval_t __objc_forward (id object, SEL sel, arglist_t args);
+
+/* Forwarding pointers/integers through the normal registers.  */
+static id
+__objc_word_forward (id rcv, SEL op, ...)
+{
+  void *args, *res;
+
+  args = __builtin_apply_args ();
+  res = __objc_forward (rcv, op, args);
+  if (res)
+    __builtin_return (res);
+  else
+    return res;
+}
+
+/* Specific routine for forwarding floats/double because of
+   architectural differences on some processors.  i386s for example
+   which uses a floating point stack versus general registers for
+   floating point numbers.  This forward routine makes sure that GCC
+   restores the proper return values.  */
+static double
+__objc_double_forward (id rcv, SEL op, ...)
+{
+  void *args, *res;
+
+  args = __builtin_apply_args ();
+  res = __objc_forward (rcv, op, args);
+  __builtin_return (res);
+}
+
+#if INVISIBLE_STRUCT_RETURN
+static __big
+#else
+static id
+#endif
+__objc_block_forward (id rcv, SEL op, ...)
+{
+  void *args, *res;
+
+  args = __builtin_apply_args ();
+  res = __objc_forward (rcv, op, args);
+  if (res)
+    __builtin_return (res);
+  else
+#if INVISIBLE_STRUCT_RETURN
+    return (__big) {{0, 0, 0, 0, 0, 0, 0, 0}};
+#else
+    return nil;
+#endif
+}
+
+
+/* This function is installed in the dispatch table for all methods
+   which are not implemented.  Thus, it is called when a selector is
+   not recognized.  */
+static retval_t
+__objc_forward (id object, SEL sel, arglist_t args)
+{
+  IMP imp;
+  static SEL frwd_sel = 0;                      /* !T:SAFE2 */
+  SEL err_sel;
+
+  /* First try if the object understands forward::.  */
+  if (! frwd_sel)
+    frwd_sel = sel_get_any_uid ("forward::");
+
+  if (__objc_responds_to (object, frwd_sel))
+    {
+      imp = get_imp (object->class_pointer, frwd_sel);
+      return (*imp) (object, frwd_sel, sel, args);
+    }
+
+  /* If the object recognizes the doesNotRecognize: method then we're
+     going to send it.  */
+  err_sel = sel_get_any_uid ("doesNotRecognize:");
+  if (__objc_responds_to (object, err_sel))
+    {
+      imp = get_imp (object->class_pointer, err_sel);
+      return (*imp) (object, err_sel, sel);
+    }
+  
+  /* The object doesn't recognize the method.  Check for responding to
+     error:.  If it does then sent it.  */
+  {
+    char msg[256 + strlen ((const char *) sel_getName (sel))
+             + strlen ((const char *) object->class_pointer->name)];
+
+    sprintf (msg, "(%s) %s does not recognize %s",
+	     (CLS_ISMETA (object->class_pointer)
+	      ? "class"
+	      : "instance" ),
+             object->class_pointer->name, sel_getName (sel));
+
+    /* TODO: support for error: is surely deprecated ? */
+    err_sel = sel_get_any_uid ("error:");
+    if (__objc_responds_to (object, err_sel))
+      {
+	imp = get_imp (object->class_pointer, err_sel);
+	return (*imp) (object, sel_get_any_uid ("error:"), msg);
+      }
+
+    /* The object doesn't respond to doesNotRecognize: or error:;
+       Therefore, a default action is taken.  */
+    _objc_abort ("%s\n", msg);
+
+    return 0;
+  }
+}
+
+void
+__objc_print_dtable_stats (void)
+{
+  int total = 0;
+
+  objc_mutex_lock (__objc_runtime_mutex);
+
+#ifdef OBJC_SPARSE2
+  printf ("memory usage: (%s)\n", "2-level sparse arrays");
+#else
+  printf ("memory usage: (%s)\n", "3-level sparse arrays");
+#endif
+
+  printf ("arrays: %d = %ld bytes\n", narrays, 
+	  (long) ((size_t) narrays * sizeof (struct sarray)));
+  total += narrays * sizeof (struct sarray);
+  printf ("buckets: %d = %ld bytes\n", nbuckets, 
+	  (long) ((size_t) nbuckets * sizeof (struct sbucket)));
+  total += nbuckets * sizeof (struct sbucket);
+
+  printf ("idxtables: %d = %ld bytes\n",
+	  idxsize, (long) ((size_t) idxsize * sizeof (void *)));
+  total += idxsize * sizeof (void *);
+  printf ("-----------------------------------\n");
+  printf ("total: %d bytes\n", total);
+  printf ("===================================\n");
+
+  objc_mutex_unlock (__objc_runtime_mutex);
+}
+
+/* Returns the uninstalled dispatch table indicator.  If a class'
+   dispatch table points to __objc_uninstalled_dtable then that means
+   it needs its dispatch table to be installed.  */
+struct sarray *
+objc_get_uninstalled_dtable (void)
+{
+  return __objc_uninstalled_dtable;
+}
diff --git a/libobjc/thr.c b/libobjc/thr.c
new file mode 100644
index 000000000..3f7e5c525
--- /dev/null
+++ b/libobjc/thr.c
@@ -0,0 +1,549 @@
+/* GNU Objective C Runtime Thread Interface
+   Copyright (C) 1996, 1997, 2009, 2010 Free Software Foundation, Inc.
+   Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "objc-private/common.h"
+#include "objc-private/error.h"
+#define _LIBOBJC
+/* The line below is needed for declarations of functions such as
+   pthread_mutexattr_settype, without which gthr-posix.h may fail to
+   compile within libobjc.  Unfortunately, this breaks compilation on
+   Tru64 UNIX V4.0F, so disable it there.  */
+#ifndef __osf__
+#define _XOPEN_SOURCE 500
+#endif
+#include "config.h"
+#include "tconfig.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "defaults.h"
+#include "objc/thr.h"
+#include "objc/message.h" /* For objc_msg_lookup().  */
+#include "objc/runtime.h"
+#include "objc-private/runtime.h"
+#include <gthr.h>
+
+#include <stdlib.h>
+
+/* Global exit status. */
+int __objc_thread_exit_status = 0;
+
+/* Flag which lets us know if we ever became multi threaded.  */
+int __objc_is_multi_threaded = 0;
+
+/* The hook function called when the runtime becomes multi
+   threaded.  */
+objc_thread_callback _objc_became_multi_threaded = NULL;
+
+/* Use this to set the hook function that will be called when the
+   runtime initially becomes multi threaded.  The hook function is
+   only called once, meaning only when the 2nd thread is spawned, not
+   for each and every thread.
+
+   It returns the previous hook function or NULL if there is none.
+
+   A program outside of the runtime could set this to some function so
+   it can be informed; for example, the GNUstep Base Library sets it
+   so it can implement the NSBecomingMultiThreaded notification.  */
+objc_thread_callback objc_set_thread_callback (objc_thread_callback func)
+{
+  objc_thread_callback temp = _objc_became_multi_threaded;
+  _objc_became_multi_threaded = func;
+  return temp;
+}
+
+/* Private functions.
+   
+   These functions are utilized by the runtime, but they are not
+   considered part of the public interface.  */
+
+/* Initialize the threads subsystem.  */
+int
+__objc_init_thread_system(void)
+{
+  return __gthread_objc_init_thread_system ();
+}
+
+/* First function called in a thread, starts everything else.
+
+   This function is passed to the backend by objc_thread_detach as the
+   starting function for a new thread.  */
+struct __objc_thread_start_state
+{
+  SEL selector;
+  id object;
+  id argument;
+};
+
+static void __attribute__((noreturn))
+__objc_thread_detach_function (struct __objc_thread_start_state *istate) 
+{
+  /* Valid state? */
+  if (istate)
+    {
+      id (*imp) (id, SEL, id);
+      SEL selector = istate->selector;
+      id object   = istate->object;
+      id argument = istate->argument;
+      
+      /* Don't need anymore so free it.  */
+      objc_free (istate);
+
+      /* Clear out the thread local storage.  */
+      objc_thread_set_data (NULL);
+      
+      /* Check to see if we just became multi threaded. */
+      if (! __objc_is_multi_threaded)
+	{
+	  __objc_is_multi_threaded = 1;
+	  
+	  /* Call the hook function.  */
+	  if (_objc_became_multi_threaded != NULL)
+	    (*_objc_became_multi_threaded) ();
+	}
+      
+      /* Call the method.  */
+      if ((imp = (id (*) (id, SEL, id))objc_msg_lookup (object, selector)))
+	(*imp) (object, selector, argument);
+      else
+	{
+	  /* FIXME: Should we abort here ? */
+	  _objc_abort ("objc_thread_detach called with bad selector.\n");
+	}
+    }
+  else
+    {
+      /* FIXME: Should we abort here ? */
+      _objc_abort ("objc_thread_detach called with NULL state.\n");
+    }
+  
+  /* Exit the thread.  */
+  objc_thread_exit ();
+  
+  /* Make sure compiler detects no return.  */
+  __builtin_trap ();
+}
+
+/* Public functions.
+
+   These functions constitute the public interface to the Objective-C
+   thread and mutex functionality.  */
+
+/* Detach a new thread of execution and return its id.  Returns NULL
+   if fails.  Thread is started by sending message with selector to
+   object.  Message takes a single argument.  */
+objc_thread_t
+objc_thread_detach (SEL selector, id object, id argument)
+{
+  struct __objc_thread_start_state *istate;
+  objc_thread_t        thread_id = NULL;
+
+  /* Allocate the state structure.  */
+  if (!(istate = (struct __objc_thread_start_state *)objc_malloc
+	(sizeof (*istate))))
+    return NULL;
+  
+  /* Initialize the state structure.  */
+  istate->selector = selector;
+  istate->object = object;
+  istate->argument = argument;
+
+  /* Lock access.  */
+  objc_mutex_lock (__objc_runtime_mutex);
+
+  /* Call the backend to spawn the thread.  */
+  if ((thread_id = __gthread_objc_thread_detach ((void *)__objc_thread_detach_function,
+						 istate)) == NULL)
+    {
+      /* Failed!  */
+      objc_mutex_unlock (__objc_runtime_mutex);
+      objc_free (istate);
+      return NULL;
+    }
+
+  /* Increment our thread counter.  */
+  __objc_runtime_threads_alive++;
+  objc_mutex_unlock (__objc_runtime_mutex);
+
+  return thread_id;
+}
+
+/* Set the current thread's priority.  */
+int
+objc_thread_set_priority (int priority)
+{
+  return __gthread_objc_thread_set_priority (priority);
+}
+
+/* Return the current thread's priority.  */
+int
+objc_thread_get_priority (void)
+{
+  return __gthread_objc_thread_get_priority ();
+}
+
+/* Yield our process time to another thread.  Any BUSY waiting that is
+   done by a thread should use this function to make sure that other
+   threads can make progress even on a lazy uniprocessor system.  */
+void
+objc_thread_yield (void)
+{
+  __gthread_objc_thread_yield ();
+}
+
+/* Terminate the current tread.  Doesn't return.  Actually, if it
+   failed returns -1.  */
+int
+objc_thread_exit (void)
+{
+  /* Decrement our counter of the number of threads alive.  */
+  objc_mutex_lock (__objc_runtime_mutex);
+  __objc_runtime_threads_alive--;
+  objc_mutex_unlock (__objc_runtime_mutex);
+
+  /* Call the backend to terminate the thread.  */
+  return __gthread_objc_thread_exit ();
+}
+
+/* Returns an integer value which uniquely describes a thread.  Must
+   not be NULL which is reserved as a marker for "no thread".  */
+objc_thread_t
+objc_thread_id (void)
+{
+  return __gthread_objc_thread_id ();
+}
+
+/* Sets the thread's local storage pointer.  Returns 0 if successful
+   or -1 if failed.  */
+int
+objc_thread_set_data (void *value)
+{
+  return __gthread_objc_thread_set_data (value);
+}
+
+/* Returns the thread's local storage pointer.  Returns NULL on
+   failure.  */
+void *
+objc_thread_get_data (void)
+{
+  return __gthread_objc_thread_get_data ();
+}
+
+/* Public mutex functions */
+
+/* Allocate a mutex.  Return the mutex pointer if successful or NULL
+   if the allocation failed for any reason.  */
+objc_mutex_t
+objc_mutex_allocate (void)
+{
+  objc_mutex_t mutex;
+
+  /* Allocate the mutex structure.  */
+  if (! (mutex = (objc_mutex_t)objc_malloc (sizeof (struct objc_mutex))))
+    return NULL;
+
+  /* Call backend to create the mutex.  */
+  if (__gthread_objc_mutex_allocate (mutex))
+    {
+      /* Failed!  */
+      objc_free (mutex);
+      return NULL;
+    }
+
+  /* Initialize mutex.  */
+  mutex->owner = NULL;
+  mutex->depth = 0;
+  return mutex;
+}
+
+/* Deallocate a mutex.  Note that this includes an implicit mutex_lock
+   to insure that no one else is using the lock.  It is legal to
+   deallocate a lock if we have a lock on it, but illegal to
+   deallocate a lock held by anyone else.  Returns the number of locks
+   on the thread.  (1 for deallocate).  */
+int
+objc_mutex_deallocate (objc_mutex_t mutex)
+{
+  int depth;
+
+  /* Valid mutex?  */
+  if (! mutex)
+    return -1;
+
+  /* Acquire lock on mutex.  */
+  depth = objc_mutex_lock (mutex);
+
+  /* Call backend to destroy mutex.  */
+  if (__gthread_objc_mutex_deallocate (mutex))
+    return -1;
+
+  /* Free the mutex structure.  */
+  objc_free (mutex);
+
+  /* Return last depth.  */
+  return depth;
+}
+
+/* Grab a lock on a mutex.  If this thread already has a lock on this
+   mutex then we increment the lock count.  If another thread has a
+   lock on the mutex we block and wait for the thread to release the
+   lock.  Returns the lock count on the mutex held by this thread.  */
+int
+objc_mutex_lock (objc_mutex_t mutex)
+{
+  objc_thread_t thread_id;
+  int status;
+
+  /* Valid mutex?  */
+  if (! mutex)
+    return -1;
+
+  /* If we already own the lock then increment depth.  */
+  thread_id = __gthread_objc_thread_id ();
+  if (mutex->owner == thread_id)
+    return ++mutex->depth;
+
+  /* Call the backend to lock the mutex.  */
+  status = __gthread_objc_mutex_lock (mutex);
+
+  /* Failed?  */
+  if (status)
+    return status;
+
+  /* Successfully locked the thread.  */
+  mutex->owner = thread_id;
+  return mutex->depth = 1;
+}
+
+/* Try to grab a lock on a mutex.  If this thread already has a lock
+   on this mutex then we increment the lock count and return it.  If
+   another thread has a lock on the mutex returns -1.  */
+int
+objc_mutex_trylock (objc_mutex_t mutex)
+{
+  objc_thread_t thread_id;
+  int status;
+
+  /* Valid mutex?  */
+  if (! mutex)
+    return -1;
+
+  /* If we already own the lock then increment depth.  */
+  thread_id = __gthread_objc_thread_id ();
+  if (mutex->owner == thread_id)
+    return ++mutex->depth;
+    
+  /* Call the backend to try to lock the mutex.  */
+  status = __gthread_objc_mutex_trylock (mutex);
+
+  /* Failed?  */
+  if (status)
+    return status;
+
+  /* Successfully locked the thread.  */
+  mutex->owner = thread_id;
+  return mutex->depth = 1;
+}
+
+/* Unlocks the mutex by one level.  Decrements the lock count on this
+   mutex by one.  If the lock count reaches zero, release the lock on
+   the mutex.  Returns the lock count on the mutex.  It is an error to
+   attempt to unlock a mutex which this thread doesn't hold in which
+   case return -1 and the mutex is unaffected.  */
+int
+objc_mutex_unlock (objc_mutex_t mutex)
+{
+  objc_thread_t thread_id;
+  int status;
+
+  /* Valid mutex?  */
+  if (! mutex)
+    return -1;
+
+  /* If another thread owns the lock then abort.  */
+  thread_id = __gthread_objc_thread_id ();
+  if (mutex->owner != thread_id)
+    return -1;
+
+  /* Decrement depth and return.  */
+  if (mutex->depth > 1)
+    return --mutex->depth;
+
+  /* Depth down to zero so we are no longer the owner.  */
+  mutex->depth = 0;
+  mutex->owner = NULL;
+
+  /* Have the backend unlock the mutex.  */
+  status = __gthread_objc_mutex_unlock (mutex);
+
+  /* Failed?  */
+  if (status)
+    return status;
+
+  return 0;
+}
+
+/* Public condition mutex functions */
+
+/* Allocate a condition.  Return the condition pointer if successful
+   or NULL if the allocation failed for any reason.  */
+objc_condition_t 
+objc_condition_allocate (void)
+{
+  objc_condition_t condition;
+    
+  /* Allocate the condition mutex structure.  */
+  if (! (condition = 
+	 (objc_condition_t) objc_malloc (sizeof (struct objc_condition))))
+    return NULL;
+
+  /* Call the backend to create the condition mutex.  */
+  if (__gthread_objc_condition_allocate (condition))
+    {
+      /* Failed!  */
+      objc_free (condition);
+      return NULL;
+    }
+
+  /* Success!  */
+  return condition;
+}
+
+/* Deallocate a condition. Note that this includes an implicit
+   condition_broadcast to insure that waiting threads have the
+   opportunity to wake.  It is legal to dealloc a condition only if no
+   other thread is/will be using it. Here we do NOT check for other
+   threads waiting but just wake them up.  */
+int
+objc_condition_deallocate (objc_condition_t condition)
+{
+  /* Broadcast the condition.  */
+  if (objc_condition_broadcast (condition))
+    return -1;
+
+  /* Call the backend to destroy.  */
+  if (__gthread_objc_condition_deallocate (condition))
+    return -1;
+
+  /* Free the condition mutex structure.  */
+  objc_free (condition);
+
+  return 0;
+}
+
+/* Wait on the condition unlocking the mutex until
+   objc_condition_signal () or objc_condition_broadcast () are called
+   for the same condition. The given mutex *must* have the depth set
+   to 1 so that it can be unlocked here, so that someone else can lock
+   it and signal/broadcast the condition.  The mutex is used to lock
+   access to the shared data that make up the "condition"
+   predicate.  */
+int
+objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
+{
+  objc_thread_t thread_id;
+
+  /* Valid arguments?  */
+  if (! mutex || ! condition)
+    return -1;
+
+  /* Make sure we are owner of mutex.  */
+  thread_id = __gthread_objc_thread_id ();
+  if (mutex->owner != thread_id)
+    return -1;
+
+  /* Cannot be locked more than once.  */
+  if (mutex->depth > 1)
+    return -1;
+
+  /* Virtually unlock the mutex.  */
+  mutex->depth = 0;
+  mutex->owner = (objc_thread_t)NULL;
+
+  /* Call the backend to wait.  */
+  __gthread_objc_condition_wait (condition, mutex);
+
+  /* Make ourselves owner of the mutex.  */
+  mutex->owner = thread_id;
+  mutex->depth = 1;
+
+  return 0;
+}
+
+/* Wake up all threads waiting on this condition. It is recommended
+   that the called would lock the same mutex as the threads in
+   objc_condition_wait before changing the "condition predicate" and
+   make this call and unlock it right away after this call.  */
+int
+objc_condition_broadcast (objc_condition_t condition)
+{
+  /* Valid condition mutex?  */
+  if (! condition)
+    return -1;
+
+  return __gthread_objc_condition_broadcast (condition);
+}
+
+/* Wake up one thread waiting on this condition. It is recommended
+   that the called would lock the same mutex as the threads in
+   objc_condition_wait before changing the "condition predicate" and
+   make this call and unlock it right away after this call.  */
+int
+objc_condition_signal (objc_condition_t condition)
+{
+  /* Valid condition mutex?  */
+  if (! condition)
+    return -1;
+
+  return __gthread_objc_condition_signal (condition);
+}
+
+/* Make the objc thread system aware that a thread which is managed
+   (started, stopped) by external code could access objc facilities
+   from now on.  This is used when you are interfacing with some
+   external non-objc-based environment/system - you must call
+   objc_thread_add () before an alien thread makes any calls to
+   Objective-C.  Do not cause the _objc_became_multi_threaded hook to
+   be executed. */
+void 
+objc_thread_add (void)
+{
+  objc_mutex_lock (__objc_runtime_mutex);
+  __objc_is_multi_threaded = 1;
+  __objc_runtime_threads_alive++;
+  objc_mutex_unlock (__objc_runtime_mutex);  
+}
+
+/* Make the objc thread system aware that a thread managed (started,
+   stopped) by some external code will no longer access objc and thus
+   can be forgotten by the objc thread system.  Call
+   objc_thread_remove () when your alien thread is done with making
+   calls to Objective-C. */
+void
+objc_thread_remove (void)
+{
+  objc_mutex_lock (__objc_runtime_mutex);
+  __objc_runtime_threads_alive--;
+  objc_mutex_unlock (__objc_runtime_mutex);  
+}
+