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| author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
|---|---|---|
| committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
| commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
| tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/configure.ac | |
| download | cbb-gcc-4.6.4-15d2061ac0796199866debe9ac87130894b0cdd3.tar.bz2 cbb-gcc-4.6.4-15d2061ac0796199866debe9ac87130894b0cdd3.tar.xz | |
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
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however, do note that line-endings of files in your working
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Diffstat (limited to 'gcc/configure.ac')
| -rw-r--r-- | gcc/configure.ac | 4950 |
1 files changed, 4950 insertions, 0 deletions
diff --git a/gcc/configure.ac b/gcc/configure.ac new file mode 100644 index 000000000..48605c851 --- /dev/null +++ b/gcc/configure.ac @@ -0,0 +1,4950 @@ +# configure.ac for GCC +# Process this file with autoconf to generate a configuration script. + +# Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, +# 2007, 2008, 2009, 2010, 2011 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/>. + +# -------------------------------- +# Initialization and sanity checks +# -------------------------------- + +AC_PREREQ(2.64) +AC_INIT +AC_CONFIG_SRCDIR(tree.c) +AC_CONFIG_HEADER(auto-host.h:config.in) + +gcc_version=`cat $srcdir/BASE-VER` + +# Determine the host, build, and target systems +AC_CANONICAL_BUILD +AC_CANONICAL_HOST +AC_CANONICAL_TARGET + +# Determine the noncanonical target name, for directory use. +ACX_NONCANONICAL_TARGET + +# Determine the target- and build-specific subdirectories +GCC_TOPLEV_SUBDIRS + +# Set program_transform_name +AC_ARG_PROGRAM + +# Check for bogus environment variables. +# Test if LIBRARY_PATH contains the notation for the current directory +# since this would lead to problems installing/building glibc. +# LIBRARY_PATH contains the current directory if one of the following +# is true: +# - one of the terminals (":" and ";") is the first or last sign +# - two terminals occur directly after each other +# - the path contains an element with a dot in it +AC_MSG_CHECKING(LIBRARY_PATH variable) +changequote(,)dnl +case ${LIBRARY_PATH} in + [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) + library_path_setting="contains current directory" + ;; + *) + library_path_setting="ok" + ;; +esac +changequote([,])dnl +AC_MSG_RESULT($library_path_setting) +if test "$library_path_setting" != "ok"; then +AC_MSG_ERROR([ +*** LIBRARY_PATH shouldn't contain the current directory when +*** building gcc. Please change the environment variable +*** and run configure again.]) +fi + +# Test if GCC_EXEC_PREFIX contains the notation for the current directory +# since this would lead to problems installing/building glibc. +# GCC_EXEC_PREFIX contains the current directory if one of the following +# is true: +# - one of the terminals (":" and ";") is the first or last sign +# - two terminals occur directly after each other +# - the path contains an element with a dot in it +AC_MSG_CHECKING(GCC_EXEC_PREFIX variable) +changequote(,)dnl +case ${GCC_EXEC_PREFIX} in + [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) + gcc_exec_prefix_setting="contains current directory" + ;; + *) + gcc_exec_prefix_setting="ok" + ;; +esac +changequote([,])dnl +AC_MSG_RESULT($gcc_exec_prefix_setting) +if test "$gcc_exec_prefix_setting" != "ok"; then +AC_MSG_ERROR([ +*** GCC_EXEC_PREFIX shouldn't contain the current directory when +*** building gcc. Please change the environment variable +*** and run configure again.]) +fi + +# ----------- +# Directories +# ----------- + +# Specify the local prefix +local_prefix= +AC_ARG_WITH(local-prefix, +[ --with-local-prefix=DIR specifies directory to put local include], +[case "${withval}" in +yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;; +no) ;; +*) local_prefix=$with_local_prefix ;; +esac]) + +# Default local prefix if it is empty +if test x$local_prefix = x; then + local_prefix=/usr/local +fi + +# Don't set gcc_gxx_include_dir to gxx_include_dir since that's only +# passed in by the toplevel make and thus we'd get different behavior +# depending on where we built the sources. +gcc_gxx_include_dir= +# Specify the g++ header file directory +AC_ARG_WITH(gxx-include-dir, +[ --with-gxx-include-dir=DIR + specifies directory to put g++ header files], +[case "${withval}" in +yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;; +no) ;; +*) gcc_gxx_include_dir=$with_gxx_include_dir ;; +esac]) + +# This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO. +if test x${gcc_gxx_include_dir} = x; then + if test x${enable_version_specific_runtime_libs} = xyes; then + gcc_gxx_include_dir='${libsubdir}/include/c++' + else + libstdcxx_incdir='include/c++/$(version)' + if test x$host != x$target; then + libstdcxx_incdir="$target_alias/$libstdcxx_incdir" + fi + gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir" + fi +fi + +AC_ARG_WITH(cpp_install_dir, +[ --with-cpp-install-dir=DIR + install the user visible C preprocessor in DIR + (relative to PREFIX) as well as PREFIX/bin], +[if test x$withval = xyes; then + AC_MSG_ERROR([option --with-cpp-install-dir requires an argument]) +elif test x$withval != xno; then + cpp_install_dir=$withval +fi]) + +# We would like to our source tree to be readonly. However when releases or +# pre-releases are generated, the flex/bison generated files as well as the +# various formats of manuals need to be included along with the rest of the +# sources. Therefore we have --enable-generated-files-in-srcdir to do +# just that. + +AC_MSG_CHECKING([whether to place generated files in the source directory]) + dnl generated-files-in-srcdir is disabled by default + AC_ARG_ENABLE(generated-files-in-srcdir, +[ --enable-generated-files-in-srcdir + put copies of generated files in source dir + intended for creating source tarballs for users + without texinfo bison or flex.], + generated_files_in_srcdir=$enableval, + generated_files_in_srcdir=no) + +AC_MSG_RESULT($generated_files_in_srcdir) + +if test "$generated_files_in_srcdir" = "yes"; then + GENINSRC='' +else + GENINSRC='#' +fi +AC_SUBST(GENINSRC) + +# ------------------- +# Find default linker +# ------------------- + +# With GNU ld +AC_ARG_WITH(gnu-ld, +[ --with-gnu-ld arrange to work with GNU ld.], +gnu_ld_flag="$with_gnu_ld", +gnu_ld_flag=no) + +# With pre-defined ld +AC_ARG_WITH(ld, +[ --with-ld arrange to use the specified ld (full pathname)], +DEFAULT_LINKER="$with_ld") +if test x"${DEFAULT_LINKER+set}" = x"set"; then + if test ! -x "$DEFAULT_LINKER"; then + AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER]) + elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then + gnu_ld_flag=yes + fi + AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER", + [Define to enable the use of a default linker.]) +fi + +gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi` +AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.]) + +AC_MSG_CHECKING([whether a default linker was specified]) +if test x"${DEFAULT_LINKER+set}" = x"set"; then + if test x"$gnu_ld_flag" = x"no"; then + AC_MSG_RESULT([yes ($DEFAULT_LINKER)]) + else + AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)]) + fi +else + AC_MSG_RESULT(no) +fi + +# With demangler in GNU ld +AC_ARG_WITH(demangler-in-ld, +[ --with-demangler-in-ld try to use demangler in GNU ld.], +demangler_in_ld="$with_demangler_in_ld", +demangler_in_ld=no) + +# ---------------------- +# Find default assembler +# ---------------------- + +# With GNU as +AC_ARG_WITH(gnu-as, +[ --with-gnu-as arrange to work with GNU as], +gas_flag="$with_gnu_as", +gas_flag=no) + +AC_ARG_WITH(as, +[ --with-as arrange to use the specified as (full pathname)], +DEFAULT_ASSEMBLER="$with_as") +if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then + if test ! -x "$DEFAULT_ASSEMBLER"; then + AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER]) + elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then + gas_flag=yes + fi + AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER", + [Define to enable the use of a default assembler.]) +fi + +gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi` +AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.]) + +AC_MSG_CHECKING([whether a default assembler was specified]) +if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then + if test x"$gas_flag" = x"no"; then + AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)]) + else + AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)]) + fi +else + AC_MSG_RESULT(no) +fi + +# --------------- +# Find C compiler +# --------------- + +# If a non-executable a.out is present (e.g. created by GNU as above even if +# invoked with -v only), the IRIX 6 native ld just overwrites the existing +# file, even when creating an executable, so an execution test fails. +# Remove possible default executable files to avoid this. +# +# FIXME: This really belongs into AC_PROG_CC and can be removed once +# Autoconf includes it. +rm -f a.out a.exe b.out + +# Find the native compiler +AC_PROG_CC +AM_PROG_CC_C_O +AC_PROG_CXX +ACX_PROG_GNAT([-I"$srcdir"/ada]) + +# autoconf is lame and doesn't give us any substitution variable for this. +if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then + NO_MINUS_C_MINUS_O=yes +else + OUTPUT_OPTION='-o $@' +fi +AC_SUBST(NO_MINUS_C_MINUS_O) +AC_SUBST(OUTPUT_OPTION) + +# Remove the -O2: for historical reasons, unless bootstrapping we prefer +# optimizations to be activated explicitly by the toplevel. +case "$CC" in + */prev-gcc/xgcc*) ;; + *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;; +esac +AC_SUBST(CFLAGS) + +# ------------------------- +# Check C compiler features +# ------------------------- + +AC_USE_SYSTEM_EXTENSIONS +AC_PROG_CPP +AC_C_INLINE + +AC_SYS_LARGEFILE + +# sizeof(char) is 1 by definition. +AC_CHECK_SIZEOF(void *) +AC_CHECK_SIZEOF(short) +AC_CHECK_SIZEOF(int) +AC_CHECK_SIZEOF(long) +AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)]) +AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)]) +GCC_STDINT_TYPES + +# --------------------- +# Warnings and checking +# --------------------- + +# Check $CC warning features (if it's GCC). +# We want to use -pedantic, but we don't want warnings about +# * 'long long' +# * variadic macros +# * overlong strings +# So, we only use -pedantic if we can disable those warnings. + +ACX_PROG_CC_WARNING_OPTS( + m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn]) +ACX_PROG_CC_WARNING_OPTS( + m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])), + [c_loose_warn]) +ACX_PROG_CC_WARNING_OPTS( + m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn]) +ACX_PROG_CC_WARNING_OPTS( + m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn]) +ACX_PROG_CC_WARNING_ALMOST_PEDANTIC( + m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ], + [-Wno-overlength-strings])), [strict_warn]) +ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn]) + +# The above macros do nothing if the compiler is not GCC. However, the +# Makefile has more goo to add other flags, so these variables are used +# to enable warnings only for GCC. +warn_cflags= +warn_cxxflags= +if test "x$GCC" = "xyes"; then + warn_cflags='$(GCC_WARN_CFLAGS)' + warn_cxxflags='$(GCC_WARN_CXXFLAGS)' +fi +AC_SUBST(warn_cflags) +AC_SUBST(warn_cxxflags) + +# Enable expensive internal checks +is_release= +if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then + is_release=yes +fi + +AC_ARG_ENABLE(checking, +[ --enable-checking[=LIST] + enable expensive run-time checks. With LIST, + enable only specific categories of checks. + Categories are: yes,no,all,none,release. + Flags are: assert,df,fold,gc,gcac,gimple,misc, + rtlflag,rtl,runtime,tree,valgrind,types.], +[ac_checking_flags="${enableval}"],[ +# Determine the default checks. +if test x$is_release = x ; then + ac_checking_flags=yes +else + ac_checking_flags=release +fi]) +IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS," +for check in release $ac_checking_flags +do + case $check in + # these set all the flags to specific states + yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ; + ac_fold_checking= ; ac_gc_checking=1 ; + ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ; + ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; + ac_tree_checking=1 ; ac_valgrind_checking= ; + ac_types_checking=1 ;; + no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ; + ac_fold_checking= ; ac_gc_checking= ; + ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ; + ac_rtlflag_checking= ; ac_runtime_checking= ; + ac_tree_checking= ; ac_valgrind_checking= ; + ac_types_checking= ;; + all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ; + ac_fold_checking=1 ; ac_gc_checking=1 ; + ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ; + ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; + ac_tree_checking=1 ; ac_valgrind_checking= ; + ac_types_checking=1 ;; + release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ; + ac_fold_checking= ; ac_gc_checking= ; + ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ; + ac_rtlflag_checking= ; ac_runtime_checking=1 ; + ac_tree_checking= ; ac_valgrind_checking= ; + ac_types_checking= ;; + # these enable particular checks + assert) ac_assert_checking=1 ;; + df) ac_df_checking=1 ;; + fold) ac_fold_checking=1 ;; + gc) ac_gc_checking=1 ;; + gcac) ac_gc_always_collect=1 ;; + gimple) ac_gimple_checking=1 ;; + misc) ac_checking=1 ;; + rtl) ac_rtl_checking=1 ;; + rtlflag) ac_rtlflag_checking=1 ;; + runtime) ac_runtime_checking=1 ;; + tree) ac_tree_checking=1 ;; + types) ac_types_checking=1 ;; + valgrind) ac_valgrind_checking=1 ;; + *) AC_MSG_ERROR(unknown check category $check) ;; + esac +done +IFS="$ac_save_IFS" + +nocommon_flag="" +if test x$ac_checking != x ; then + AC_DEFINE(ENABLE_CHECKING, 1, +[Define if you want more run-time sanity checks. This one gets a grab + bag of miscellaneous but relatively cheap checks.]) + nocommon_flag=-fno-common +fi +AC_SUBST(nocommon_flag) +if test x$ac_df_checking != x ; then + AC_DEFINE(ENABLE_DF_CHECKING, 1, +[Define if you want more run-time sanity checks for dataflow.]) +fi +if test x$ac_assert_checking != x ; then + AC_DEFINE(ENABLE_ASSERT_CHECKING, 1, +[Define if you want assertions enabled. This is a cheap check.]) +fi +if test x$ac_gimple_checking != x ; then + AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1, +[Define if you want operations on GIMPLE (the basic data structure of +the high-level optimizers) to be checked for dynamic type safety at +runtime. This is moderately expensive.]) +fi +GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING) +if test x$ac_runtime_checking != x ; then + AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1, +[Define if you want runtime assertions enabled. This is a cheap check.]) +fi +if test x$ac_tree_checking != x ; then + AC_DEFINE(ENABLE_TREE_CHECKING, 1, +[Define if you want all operations on trees (the basic data + structure of the front ends) to be checked for dynamic type safety + at runtime. This is moderately expensive. The tree browser debugging + routines will also be enabled by this option. + ]) + TREEBROWSER=tree-browser.o +fi +if test x$ac_types_checking != x ; then + AC_DEFINE(ENABLE_TYPES_CHECKING, 1, +[Define if you want all gimple types to be verified after gimplifiation. + This is cheap. + ]) +fi +AC_SUBST(TREEBROWSER) +if test x$ac_rtl_checking != x ; then + AC_DEFINE(ENABLE_RTL_CHECKING, 1, +[Define if you want all operations on RTL (the basic data structure + of the optimizer and back end) to be checked for dynamic type safety + at runtime. This is quite expensive.]) +fi +if test x$ac_rtlflag_checking != x ; then + AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1, +[Define if you want RTL flag accesses to be checked against the RTL + codes that are supported for each access macro. This is relatively + cheap.]) +fi +if test x$ac_gc_checking != x ; then + AC_DEFINE(ENABLE_GC_CHECKING, 1, +[Define if you want the garbage collector to do object poisoning and + other memory allocation checks. This is quite expensive.]) +fi +if test x$ac_gc_always_collect != x ; then + AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1, +[Define if you want the garbage collector to operate in maximally + paranoid mode, validating the entire heap and collecting garbage at + every opportunity. This is extremely expensive.]) +fi +if test x$ac_fold_checking != x ; then + AC_DEFINE(ENABLE_FOLD_CHECKING, 1, +[Define if you want fold checked that it never destructs its argument. + This is quite expensive.]) +fi +valgrind_path_defines= +valgrind_command= + +dnl # This check AC_REQUIREs various stuff, so it *must not* be inside +dnl # an if statement. This was the source of very frustrating bugs +dnl # in converting to autoconf 2.5x! +AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no) + +if test x$ac_valgrind_checking != x ; then + # It is certainly possible that there's valgrind but no valgrind.h. + # GCC relies on making annotations so we must have both. + AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>) + AC_PREPROC_IFELSE([AC_LANG_SOURCE( + [[#include <valgrind/memcheck.h> +#ifndef VALGRIND_DISCARD +#error VALGRIND_DISCARD not defined +#endif]])], + [gcc_cv_header_valgrind_memcheck_h=yes], + [gcc_cv_header_valgrind_memcheck_h=no]) + AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h) + AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>) + AC_PREPROC_IFELSE([AC_LANG_SOURCE( + [[#include <memcheck.h> +#ifndef VALGRIND_DISCARD +#error VALGRIND_DISCARD not defined +#endif]])], + [gcc_cv_header_memcheck_h=yes], + [gcc_cv_header_memcheck_h=no]) + AC_MSG_RESULT($gcc_cv_header_memcheck_h) + AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind, + [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1]) + if test "x$valgrind_path" = "x" \ + || (test $have_valgrind_h = no \ + && test $gcc_cv_header_memcheck_h = no \ + && test $gcc_cv_header_valgrind_memcheck_h = no); then + AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h]) + fi + valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"' + valgrind_command="$valgrind_path -q" + AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1, +[Define if you want to run subprograms and generated programs + through valgrind (a memory checker). This is extremely expensive.]) + if test $gcc_cv_header_valgrind_memcheck_h = yes; then + AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1, + [Define if valgrind's valgrind/memcheck.h header is installed.]) + fi + if test $gcc_cv_header_memcheck_h = yes; then + AC_DEFINE(HAVE_MEMCHECK_H, 1, + [Define if valgrind's memcheck.h header is installed.]) + fi +fi +AC_SUBST(valgrind_path_defines) +AC_SUBST(valgrind_command) + +# Enable code coverage collection +AC_ARG_ENABLE(coverage, +[ --enable-coverage[=LEVEL] + enable compiler's code coverage collection. + Use to measure compiler performance and locate + unused parts of the compiler. With LEVEL, specify + optimization. Values are opt, noopt, + default is noopt], +[case "${enableval}" in + yes|noopt) + coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0" + ;; + opt) + coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2" + ;; + no) + # a.k.a. --disable-coverage + coverage_flags="" + ;; + *) + AC_MSG_ERROR(unknown coverage setting $enableval) + ;; +esac], +[coverage_flags=""]) +AC_SUBST(coverage_flags) + +AC_ARG_ENABLE(gather-detailed-mem-stats, +[ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [], +[enable_gather_detailed_mem_stats=no]) +if test x$enable_gather_detailed_mem_stats = xyes ; then + AC_DEFINE(GATHER_STATISTICS, 1, + [Define to enable detailed memory allocation stats gathering.]) +fi + +# ------------------------------- +# Miscenalleous configure options +# ------------------------------- + +# See if we are building gcc with C++. +AC_ARG_ENABLE(build-with-cxx, +[ --enable-build-with-cxx build with C++ compiler instead of C compiler], +ENABLE_BUILD_WITH_CXX=$enableval, +ENABLE_BUILD_WITH_CXX=no) +AC_SUBST(ENABLE_BUILD_WITH_CXX) +if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then + AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1, + [Define if building with C++.]) +fi + +# With stabs +AC_ARG_WITH(stabs, +[ --with-stabs arrange to use stabs instead of host debug format], +stabs="$with_stabs", +stabs=no) + +# Determine whether or not multilibs are enabled. +AC_ARG_ENABLE(multilib, +[ --enable-multilib enable library support for multiple ABIs], +[], [enable_multilib=yes]) +AC_SUBST(enable_multilib) + +# Determine whether or not multiarch is enabled. +AC_ARG_ENABLE(multiarch, +[AS_HELP_STRING([--enable-multiarch], + [enable support for multiarch paths])], +[case "${enableval}" in +yes|no|auto) enable_multiarch=$enableval;; +*) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;; +esac], [enable_multiarch=auto]) +if test x${enable_multiarch} = xauto; then + if test x$host != x$target && test "x$with_sysroot" = x; then + ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)" + enable_multiarch=no + fi +fi +AC_MSG_CHECKING(for multiarch configuration) +AC_SUBST(enable_multiarch) +AC_MSG_RESULT($enable_multiarch$ma_msg_suffix) + +# needed for setting the multiarch name for soft-float/hard-float ABIs +AC_SUBST(with_cpu) +AC_SUBST(with_float) + +# Enable __cxa_atexit for C++. +AC_ARG_ENABLE(__cxa_atexit, +[ --enable-__cxa_atexit enable __cxa_atexit for C++], +[], []) + +# Enable C extension for decimal float if target supports it. +GCC_AC_ENABLE_DECIMAL_FLOAT([$target]) + +dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi` +AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp, +[Define to 1 to enable decimal float extension to C.]) + +# Use default_decimal_float for dependency. +enable_decimal_float=$default_decimal_float + +bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi` +AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid, +[Define to 1 to specify that we are using the BID decimal floating +point format instead of DPD]) + +# Enable C extension for fixed-point arithmetic. +AC_ARG_ENABLE(fixed-point, +[ --enable-fixed-point enable fixed-point arithmetic extension to C], +[ +], +[ + case $target in + mips*-*-*) + case $host in + mips*-sgi-irix*) + AC_MSG_WARN([fixed-point is not supported on IRIX, ignored]) + enable_fixed_point=no + ;; + *) + enable_fixed_point=yes + ;; + esac + ;; + *) + AC_MSG_WARN([fixed-point is not supported for this target, ignored]) + enable_fixed_point=no + ;; + esac +]) +AC_SUBST(enable_fixed_point) + +fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi` +AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint, +[Define to 1 to enable fixed-point arithmetic extension to C.]) + +# Enable threads +# Pass with no value to take the default +# Pass with a value to specify a thread package +AC_ARG_ENABLE(threads, +[ --enable-threads enable thread usage for target GCC + --enable-threads=LIB use LIB thread package for target GCC],, +[enable_threads='']) + +AC_ARG_ENABLE(tls, +[ --enable-tls enable or disable generation of tls code + overriding the assembler check for tls support], +[ + case $enable_tls in + yes | no) ;; + *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls. +Valid choices are 'yes' and 'no'.]) ;; + esac +], [enable_tls='']) + +AC_ARG_ENABLE(objc-gc, +[ --enable-objc-gc enable the use of Boehm's garbage collector with + the GNU Objective-C runtime], +if test x$enable_objc_gc = xno; then + objc_boehm_gc='' +else + objc_boehm_gc=1 +fi, +objc_boehm_gc='') + +AC_ARG_WITH(dwarf2, +[ --with-dwarf2 force the default debug format to be DWARF 2], +dwarf2="$with_dwarf2", +dwarf2=no) + +AC_ARG_ENABLE(shared, +[ --disable-shared don't provide a shared libgcc], +[ + case $enable_shared in + yes | no) ;; + *) + enable_shared=no + IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:," + for pkg in $enableval; do + if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then + enable_shared=yes + fi + done + IFS="$ac_save_ifs" + ;; + esac +], [enable_shared=yes]) +AC_SUBST(enable_shared) + +AC_ARG_WITH(build-sysroot, + [ --with-build-sysroot=sysroot + use sysroot as the system root during the build]) + +AC_ARG_WITH(sysroot, +[ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.], +[ + case ${with_sysroot} in + yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;; + *) TARGET_SYSTEM_ROOT=$with_sysroot ;; + esac + + TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"' + CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)' + + if test "x$prefix" = xNONE; then + test_prefix=/usr/local + else + test_prefix=$prefix + fi + if test "x$exec_prefix" = xNONE; then + test_exec_prefix=$test_prefix + else + test_exec_prefix=$exec_prefix + fi + case ${TARGET_SYSTEM_ROOT} in + "${test_prefix}"|"${test_prefix}/"*|\ + "${test_exec_prefix}"|"${test_exec_prefix}/"*|\ + '${prefix}'|'${prefix}/'*|\ + '${exec_prefix}'|'${exec_prefix}/'*) + t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE" + TARGET_SYSTEM_ROOT_DEFINE="$t" + ;; + esac +], [ + TARGET_SYSTEM_ROOT= + TARGET_SYSTEM_ROOT_DEFINE= + CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include' +]) +AC_SUBST(TARGET_SYSTEM_ROOT) +AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE) +AC_SUBST(CROSS_SYSTEM_HEADER_DIR) + +AC_ARG_WITH(specs, + [AS_HELP_STRING([--with-specs=SPECS], + [add SPECS to driver command-line processing])], + [CONFIGURE_SPECS=$withval], + [CONFIGURE_SPECS=] +) +AC_SUBST(CONFIGURE_SPECS) + +ACX_PKGVERSION([GCC]) +ACX_BUGURL([http://gcc.gnu.org/bugs.html]) + +# Sanity check enable_languages in case someone does not run the toplevel +# configure # script. +AC_ARG_ENABLE(languages, +[ --enable-languages=LIST specify which front-ends to build], +[case ,${enable_languages}, in + ,,|,yes,) + # go safe -- we cannot be much sure without the toplevel + # configure's + # analysis of which target libs are present and usable + enable_languages=c + ;; + *,all,*) + AC_MSG_ERROR([only the toplevel supports --enable-languages=all]) + ;; + *,c,*) + ;; + *) + enable_languages=c,${enable_languages} + ;; +esac], +[enable_languages=c]) + +AC_ARG_WITH(multilib-list, +[ --with-multilib-list Select multilibs (SH only)], +:, +with_multilib_list=default) + +# ------------------------- +# Checks for other programs +# ------------------------- + +AC_PROG_MAKE_SET + +# Find some useful tools +AC_PROG_AWK +# We need awk to create options.c and options.h. +# Bail out if it's missing. +case ${AWK} in + "") AC_MSG_ERROR([can't build without awk, bailing out]) ;; +esac + +gcc_AC_PROG_LN_S +ACX_PROG_LN($LN_S) +AC_PROG_RANLIB +ranlib_flags="" +AC_SUBST(ranlib_flags) + +gcc_AC_PROG_INSTALL + +# See if cmp has --ignore-initial. +gcc_AC_PROG_CMP_IGNORE_INITIAL + +# See if we have the mktemp command. +AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no) + +# See if makeinfo has been installed and is modern enough +# that we can use it. +ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, + [GNU texinfo.* \([0-9][0-9.]*\)], + [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) +if test $gcc_cv_prog_makeinfo_modern = no; then + AC_MSG_WARN([ +*** Makeinfo is missing or too old. +*** Info documentation will not be built.]) + BUILD_INFO= +else + BUILD_INFO=info +fi +AC_SUBST(BUILD_INFO) + +# Is pod2man recent enough to regenerate manpages? +AC_MSG_CHECKING([for recent Pod::Man]) +if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then + AC_MSG_RESULT(yes) + GENERATED_MANPAGES=generated-manpages +else + AC_MSG_RESULT(no) + GENERATED_MANPAGES= +fi +AC_SUBST(GENERATED_MANPAGES) + +MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing" + +# How about lex? +dnl Don't use AC_PROG_LEX; we insist on flex. +dnl LEXLIB is not useful in gcc. +AC_CHECK_PROGS([FLEX], flex, [$MISSING flex]) + +# Bison? +AC_CHECK_PROGS([BISON], bison, [$MISSING bison]) + +# Binutils are not build modules, unlike bison/flex/makeinfo. So we +# check for build == host before using them. + +# NM +if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \ + && test -d ../binutils ; then + NM='${objdir}/../binutils/nm-new' +else + AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm) +fi + +# AR +if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \ + && test -d ../binutils ; then + AR='${objdir}/../binutils/ar' +else + AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar) +fi + + +# -------------------- +# Checks for C headers +# -------------------- + +# Need to reject headers which give warnings, so that the -Werror bootstrap +# works later. *sigh* This needs to come before all header checks. +AC_PROG_CPP_WERROR + +AC_HEADER_STDC +AC_HEADER_TIME +ACX_HEADER_STRING +AC_HEADER_SYS_WAIT +AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \ + fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \ + sys/resource.h sys/param.h sys/times.h sys/stat.h \ + direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h) + +# Check for thread headers. +AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=]) +AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=]) + +# These tests can't be done till we know if we have limits.h. +gcc_AC_C_CHAR_BIT +AC_C_BIGENDIAN + +# ---------------------- +# Checks for C++ headers +# ---------------------- + +dnl Autoconf will give an error in the configure script if there is no +dnl C++ preprocessor. Hack to prevent that. +m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl +AC_PROG_CXXCPP +m4_popdef([AC_MSG_ERROR])[]dnl + +AC_LANG_PUSH(C++) + +AC_CHECK_HEADERS(unordered_map) +AC_CHECK_HEADERS(tr1/unordered_map) +AC_CHECK_HEADERS(ext/hash_map) + +AC_LANG_POP(C++) + +# -------- +# UNSORTED +# -------- + + +# These libraries may be used by collect2. +# We may need a special search path to get them linked. +AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs, +[save_LIBS="$LIBS" +for libs in '' -lld -lmld \ + '-L/usr/lib/cmplrs/cc2.11 -lmld' \ + '-L/usr/lib/cmplrs/cc3.11 -lmld' +do + LIBS="$libs" + AC_TRY_LINK_FUNC(ldopen, + [gcc_cv_collect2_libs="$libs"; break]) +done +LIBS="$save_LIBS" +test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required']) +case $gcc_cv_collect2_libs in + "none required") ;; + *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;; +esac +AC_SUBST(COLLECT2_LIBS) + +# When building Ada code on Alpha, we need exc_resume which is usually in +# -lexc. So test for it. +save_LIBS="$LIBS" +LIBS= +AC_SEARCH_LIBS(exc_resume, exc) +GNAT_LIBEXC="$LIBS" +LIBS="$save_LIBS" +AC_SUBST(GNAT_LIBEXC) + +# Some systems put ldexp and frexp in libm instead of libc; assume +# they're both in the same place. jcf-dump needs them. +save_LIBS="$LIBS" +LIBS= +AC_SEARCH_LIBS(ldexp, m) +LDEXP_LIB="$LIBS" +LIBS="$save_LIBS" +AC_SUBST(LDEXP_LIB) + +# Use <inttypes.h> only if it exists, +# doesn't clash with <sys/types.h>, and declares intmax_t. +AC_MSG_CHECKING(for inttypes.h) +AC_CACHE_VAL(gcc_cv_header_inttypes_h, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM( +[[#include <sys/types.h> +#include <inttypes.h>]], + [[intmax_t i = -1;]])], + [gcc_cv_header_inttypes_h=yes], + [gcc_cv_header_inttypes_h=no])]) +AC_MSG_RESULT($gcc_cv_header_inttypes_h) +if test $gcc_cv_header_inttypes_h = yes; then + AC_DEFINE(HAVE_INTTYPES_H, 1, + [Define if you have a working <inttypes.h> header file.]) +fi + +dnl Disabled until we have a complete test for buggy enum bitfields. +dnl gcc_AC_C_ENUM_BF_UNSIGNED + +define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl + ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl + fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl + fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl + putchar_unlocked putc_unlocked) +AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \ + sysconf strsignal getrusage nl_langinfo \ + gettimeofday mbstowcs wcswidth mmap setlocale \ + gcc_UNLOCKED_FUNCS) + +if test x$ac_cv_func_mbstowcs = xyes; then + AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works, +[ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h> +int main() +{ + mbstowcs(0, "", 0); + return 0; +}]])], + [gcc_cv_func_mbstowcs_works=yes], + [gcc_cv_func_mbstowcs_works=no], + [gcc_cv_func_mbstowcs_works=yes])]) + if test x$gcc_cv_func_mbstowcs_works = xyes; then + AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1, + [Define this macro if mbstowcs does not crash when its + first argument is NULL.]) + fi +fi + +AC_CHECK_TYPE(ssize_t, int) +AC_CHECK_TYPE(caddr_t, char *) + +gcc_AC_FUNC_MMAP_BLACKLIST + +case "${host}" in +*-*-*vms*) + # Under VMS, vfork works very differently than on Unix. The standard test + # won't work, and it isn't easily adaptable. It makes more sense to + # just force it. + ac_cv_func_vfork_works=yes + ;; +esac +AC_FUNC_FORK + +AM_ICONV +# Until we have in-tree GNU iconv: +LIBICONV_DEP= +AC_SUBST(LIBICONV_DEP) + +AM_LC_MESSAGES + +AM_LANGINFO_CODESET + +# We will need to find libiberty.h and ansidecl.h +saved_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include" +gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \ + strsignal strstr strverscmp \ + errno snprintf vsnprintf vasprintf malloc realloc calloc \ + free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[ +#include "ansidecl.h" +#include "system.h"]) + +gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[ +#include "ansidecl.h" +#include "system.h" +#ifdef HAVE_SYS_RESOURCE_H +#include <sys/resource.h> +#endif +]) + +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include "ansidecl.h" +#include "system.h" +#ifdef HAVE_SYS_RESOURCE_H +#include <sys/resource.h> +#endif +]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long], +[Define to `long' if <sys/resource.h> doesn't define.])]) + +# On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible +# FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname +# in collect2.c, <fcntl.h> isn't visible, but the configure test below needs +# to undef these macros to get the correct value for HAVE_DECL_LDGETNAME. +gcc_AC_CHECK_DECLS(ldgetname, , ,[ +#include "ansidecl.h" +#include "system.h" +#ifdef HAVE_LDFCN_H +#undef FREAD +#undef FWRITE +#include <ldfcn.h> +#endif +]) + +gcc_AC_CHECK_DECLS(times, , ,[ +#include "ansidecl.h" +#include "system.h" +#ifdef HAVE_SYS_TIMES_H +#include <sys/times.h> +#endif +]) + +gcc_AC_CHECK_DECLS(sigaltstack, , ,[ +#include "ansidecl.h" +#include "system.h" +#include <signal.h> +]) + +# More time-related stuff. +AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [ +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include "ansidecl.h" +#include "system.h" +#ifdef HAVE_SYS_TIMES_H +#include <sys/times.h> +#endif +]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])]) +if test $ac_cv_struct_tms = yes; then + AC_DEFINE(HAVE_STRUCT_TMS, 1, + [Define if <sys/times.h> defines struct tms.]) +fi + +# use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE. +# revisit after autoconf 2.50. +AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [ +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include "ansidecl.h" +#include "system.h" +]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])]) +if test $gcc_cv_type_clock_t = yes; then + AC_DEFINE(HAVE_CLOCK_T, 1, + [Define if <time.h> defines clock_t.]) +fi + +# Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests. +CFLAGS="$saved_CFLAGS" + +gcc_AC_INITFINI_ARRAY + +# mkdir takes a single argument on some systems. +gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG + +# File extensions +manext='.1' +objext='.o' +AC_SUBST(manext) +AC_SUBST(objext) + +# With Setjmp/Longjmp based exception handling. +AC_ARG_ENABLE(sjlj-exceptions, +[ --enable-sjlj-exceptions + arrange to use setjmp/longjmp exception handling], +[case $target in + *-*-hpux10*) + if test $enableval != yes; then + AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced]) + enableval=yes + fi + ;; +esac +force_sjlj_exceptions=yes], +[case $target in + *-*-hpux10*) + force_sjlj_exceptions=yes + enableval=yes + ;; + *) + force_sjlj_exceptions=no + ;; +esac]) +if test $force_sjlj_exceptions = yes; then + sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi` + AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj, + [Define 0/1 to force the choice for exception handling model.]) +fi + +# For platforms with the unwind ABI which includes an unwind library, +# libunwind, we can choose to use the system libunwind. +# config.gcc also contains tests of with_system_libunwind. +GCC_CHECK_UNWIND_GETIPINFO + +# -------------------------------------------------------- +# Build, host, and target specific configuration fragments +# -------------------------------------------------------- + +# Collect build-machine-specific information. +. ${srcdir}/config.build + +# Collect host-machine-specific information. +. ${srcdir}/config.host + +target_gtfiles= + +# Collect target-machine-specific information. +. ${srcdir}/config.gcc + +extra_objs="${host_extra_objs} ${extra_objs}" +extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}" + +# Default the target-machine variables that were not explicitly set. +if test x"$tm_file" = x +then tm_file=$cpu_type/$cpu_type.h; fi + +if test x"$extra_headers" = x +then extra_headers=; fi + +if test x$md_file = x +then md_file=$cpu_type/$cpu_type.md; fi + +if test x$out_file = x +then out_file=$cpu_type/$cpu_type.c; fi + +if test x"$tmake_file" = x +then tmake_file=$cpu_type/t-$cpu_type +fi + +if test x"$dwarf2" = xyes +then tm_file="$tm_file tm-dwarf2.h" +fi + +# Say what files are being used for the output code and MD file. +echo "Using \`$srcdir/config/$out_file' for machine-specific logic." +echo "Using \`$srcdir/config/$md_file' as machine description file." + +# If any of the xm_file variables contain nonexistent files, warn +# about them and drop them. + +bx= +for x in $build_xm_file; do + if test -f $srcdir/config/$x + then bx="$bx $x" + else AC_MSG_WARN($srcdir/config/$x does not exist.) + fi +done +build_xm_file="$bx" + +hx= +for x in $host_xm_file; do + if test -f $srcdir/config/$x + then hx="$hx $x" + else AC_MSG_WARN($srcdir/config/$x does not exist.) + fi +done +host_xm_file="$hx" + +tx= +for x in $xm_file; do + if test -f $srcdir/config/$x + then tx="$tx $x" + else AC_MSG_WARN($srcdir/config/$x does not exist.) + fi +done +xm_file="$tx" + +count=a +for f in $tm_file; do + count=${count}x +done +if test $count = ax; then + echo "Using \`$srcdir/config/$tm_file' as target machine macro file." +else + echo "Using the following target machine macro files:" + for f in $tm_file; do + echo " $srcdir/config/$f" + done +fi + +if test x$need_64bit_hwint = xyes; then + AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1, +[Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).]) +fi + +if test x$use_long_long_for_widest_fast_int = xyes; then + AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1, +[Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still +efficiently supported by the host hardware.]) +fi + +count=a +for f in $host_xm_file; do + count=${count}x +done +if test $count = a; then + : +elif test $count = ax; then + echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file." +else + echo "Using the following host machine macro files:" + for f in $host_xm_file; do + echo " $srcdir/config/$f" + done +fi +echo "Using ${out_host_hook_obj} for host machine hooks." + +if test "$host_xm_file" != "$build_xm_file"; then + count=a + for f in $build_xm_file; do + count=${count}x + done + if test $count = a; then + : + elif test $count = ax; then + echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file." + else + echo "Using the following build machine macro files:" + for f in $build_xm_file; do + echo " $srcdir/config/$f" + done + fi +fi + +case ${host} in + powerpc*-*-darwin*) + AC_CACHE_CHECK([whether mcontext_t fields have underscores], + gcc_cv_mcontext_underscores, + AC_COMPILE_IFELSE([ +#include <sys/cdefs.h> +#include <sys/signal.h> +#include <ucontext.h> +int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; } +], + gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes)) + if test $gcc_cv_mcontext_underscores = yes; then + AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl + [mcontext_t fields start with __]) + fi + ;; +esac + +# --------- +# Threading +# --------- + +# Check if a valid thread package +case ${enable_threads} in + "" | no) + # No threads + target_thread_file='single' + ;; + yes) + # default + target_thread_file='single' + ;; + aix | dce | gnat | irix | posix | posix95 | rtems | \ + single | solaris | vxworks | win32 | mipssde) + target_thread_file=${enable_threads} + ;; + *) + echo "${enable_threads} is an unknown thread package" 1>&2 + exit 1 + ;; +esac + +if test x${thread_file} = x; then + # No thread file set by target-specific clauses in config.gcc, + # so use file chosen by default logic above + thread_file=${target_thread_file} +fi + +# Make gthr-default.h if we have a thread file. +gthread_flags= +if test $thread_file != single; then + echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t + if diff gthr-default.h-t gthr-default.h 2>/dev/null; then + rm -f gthr-default.h-t + else + mv -f gthr-default.h-t gthr-default.h + fi + gthread_flags=-DHAVE_GTHR_DEFAULT +fi +AC_SUBST(gthread_flags) + +# -------- +# UNSORTED +# -------- + +use_cxa_atexit=no +if test x$enable___cxa_atexit = xyes || \ + test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then + if test x$host = x$target; then + case $host in + # mingw32 doesn't have __cxa_atexit but uses atexit registration + # keyed to flag_use_cxa_atexit + *-*-mingw32*) + use_cxa_atexit=yes + ;; + *) + AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes], + [echo "__cxa_atexit can't be enabled on this target"]) + ;; + esac + else + # We can't check for __cxa_atexit when building a cross, so assume + # it is available + use_cxa_atexit=yes + fi + if test x$use_cxa_atexit = xyes; then + AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2, + [Define if you want to use __cxa_atexit, rather than atexit, to + register C++ destructors for local statics and global objects. + This is essential for fully standards-compliant handling of + destructors, but requires __cxa_atexit in libc.]) + fi +fi + +# Look for a file containing extra machine modes. +if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then + extra_modes_file='$(srcdir)'/config/${extra_modes} + AC_SUBST(extra_modes_file) + AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes", + [Define to the name of a file containing a list of extra machine modes + for this architecture.]) +fi + +# Convert extra_options into a form suitable for Makefile use. +extra_opt_files= +all_opt_files= +for f in $extra_options; do + extra_opt_files="$extra_opt_files \$(srcdir)/config/$f" + all_opt_files="$all_opt_files $srcdir/config/$f" +done +AC_SUBST(extra_opt_files) + +# auto-host.h is the file containing items generated by autoconf and is +# the first file included by config.h. +# If host=build, it is correct to have bconfig include auto-host.h +# as well. If host!=build, we are in error and need to do more +# work to find out the build config parameters. +if test x$host = x$build +then + build_auto=auto-host.h +else + # We create a subdir, then run autoconf in the subdir. + # To prevent recursion we set host and build for the new + # invocation of configure to the build for this invocation + # of configure. + tempdir=build.$$ + rm -rf $tempdir + mkdir $tempdir + cd $tempdir + case ${srcdir} in + /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};; + *) realsrcdir=../${srcdir};; + esac + saved_CFLAGS="${CFLAGS}" + CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \ + LDFLAGS="${LDFLAGS_FOR_BUILD}" \ + ${realsrcdir}/configure \ + --enable-languages=${enable_languages-all} \ + --target=$target_alias --host=$build_alias --build=$build_alias + CFLAGS="${saved_CFLAGS}" + + # We just finished tests for the build machine, so rename + # the file auto-build.h in the gcc directory. + mv auto-host.h ../auto-build.h + cd .. + rm -rf $tempdir + build_auto=auto-build.h +fi +AC_SUBST(build_subdir) + +tm_file="${tm_file} defaults.h" +tm_p_file="${tm_p_file} tm-preds.h" +host_xm_file="auto-host.h ansidecl.h ${host_xm_file}" +build_xm_file="${build_auto} ansidecl.h ${build_xm_file}" +# We don't want ansidecl.h in target files, write code there in ISO/GNU C. +# put this back in temporarily. +xm_file="auto-host.h ansidecl.h ${xm_file}" + +# -------- +# UNSORTED +# -------- + +changequote(,)dnl +# Compile in configure arguments. +if test -f configargs.h ; then + # Being re-configured. + gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'` + gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" +else + gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS" +fi + +# Double all backslashes and backslash all quotes to turn +# gcc_config_arguments into a C string. +sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out +$gcc_config_arguments +EOF +gcc_config_arguments_str=`cat conftest.out` +rm -f conftest.out + +cat > configargs.h <<EOF +/* Generated automatically. */ +static const char configuration_arguments[] = "$gcc_config_arguments_str"; +static const char thread_model[] = "$thread_file"; + +static const struct { + const char *name, *value; +} configure_default_options[] = $configure_default_options; +EOF +changequote([,])dnl + +changequote(,)dnl +gcc_BASEVER=`cat $srcdir/BASE-VER` +gcc_DEVPHASE=`cat $srcdir/DEV-PHASE` +gcc_DATESTAMP=`cat $srcdir/DATESTAMP` +if test -f $srcdir/REVISION ; then + gcc_REVISION=`cat $srcdir/REVISION` +else + gcc_REVISION="" +fi +cat > plugin-version.h <<EOF +#include "configargs.h" + +static char basever[] = "$gcc_BASEVER"; +static char datestamp[] = "$gcc_DATESTAMP"; +static char devphase[] = "$gcc_DEVPHASE"; +static char revision[] = "$gcc_REVISION"; + +/* FIXME plugins: We should make the version information more precise. + One way to do is to add a checksum. */ + +static struct plugin_gcc_version gcc_version = {basever, datestamp, + devphase, revision, + configuration_arguments}; +EOF +changequote([,])dnl + +# Internationalization +ZW_GNU_GETTEXT_SISTER_DIR + +# If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get +# -liconv on the link line twice. +case "$LIBINTL" in *$LIBICONV*) + LIBICONV= ;; +esac + +AC_ARG_ENABLE(secureplt, +[ --enable-secureplt enable -msecure-plt by default for PowerPC], +[], []) + +AC_ARG_ENABLE(leading-mingw64-underscores, + AS_HELP_STRING([--enable-leading-mingw64-underscores], + [Enable leading underscores on 64 bit mingw targets]), + [],[]) +AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ], + [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1, + [Define if we should use leading underscore on 64 bit mingw targets])]) + +AC_ARG_ENABLE(cld, +[ --enable-cld enable -mcld by default for 32bit x86], [], +[enable_cld=no]) + +AC_ARG_ENABLE(frame-pointer, +[ --enable-frame-pointer enable -fno-omit-frame-pointer by default for 32bit x86], [], +[ +case $target_os in +linux* | darwin[[8912]]*) + # Enable -fomit-frame-pointer by default for Linux and Darwin with + # DWARF2. + enable_frame_pointer=no + ;; +*) + enable_frame_pointer=yes + ;; +esac +]) + +# Windows32 Registry support for specifying GCC installation paths. +AC_ARG_ENABLE(win32-registry, +[ --disable-win32-registry + disable lookup of installation paths in the + Registry on Windows hosts + --enable-win32-registry enable registry lookup (default) + --enable-win32-registry=KEY + use KEY instead of GCC version as the last portion + of the registry key],,) + +case $host_os in + win32 | pe | cygwin* | mingw32* | uwin*) + if test "x$enable_win32_registry" != xno; then + AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no]) + fi + + if test "x$enable_win32_registry" != xno; then + AC_DEFINE(ENABLE_WIN32_REGISTRY, 1, + [Define to 1 if installation paths should be looked up in the Windows + Registry. Ignored on non-Windows hosts.]) + + if test "x$enable_win32_registry" != xyes \ + && test "x$enable_win32_registry" != x; then + AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry", + [Define to be the last component of the Windows registry key under which + to look for installation paths. The full key used will be + HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}. + The default is the GCC version number.]) + fi + fi + ;; +esac + +# Get an absolute path to the GCC top-level source directory +holddir=`${PWDCMD-pwd}` +cd $srcdir +topdir=`${PWDCMD-pwd}` +cd $holddir + +# Conditionalize the makefile for this host machine. +xmake_file= +for f in ${host_xmake_file} +do + if test -f ${srcdir}/config/$f + then + xmake_file="${xmake_file} \$(srcdir)/config/$f" + fi +done + +# Conditionalize the makefile for this target machine. +tmake_file_= +for f in ${tmake_file} +do + if test -f ${srcdir}/config/$f + then + tmake_file_="${tmake_file_} \$(srcdir)/config/$f" + fi +done +tmake_file="${tmake_file_}" + +out_object_file=`basename $out_file .c`.o + +tm_file_list="options.h" +tm_include_list="options.h insn-constants.h" +for f in $tm_file; do + case $f in + ./* ) + f=`echo $f | sed 's/^..//'` + tm_file_list="${tm_file_list} $f" + tm_include_list="${tm_include_list} $f" + ;; + defaults.h ) + tm_file_list="${tm_file_list} \$(srcdir)/$f" + tm_include_list="${tm_include_list} $f" + ;; + * ) + tm_file_list="${tm_file_list} \$(srcdir)/config/$f" + tm_include_list="${tm_include_list} config/$f" + ;; + esac +done + +tm_p_file_list= +tm_p_include_list= +for f in $tm_p_file; do + case $f in + tm-preds.h ) + tm_p_file_list="${tm_p_file_list} $f" + tm_p_include_list="${tm_p_include_list} $f" + ;; + * ) + tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f" + tm_p_include_list="${tm_p_include_list} config/$f" + esac +done + +xm_file_list= +xm_include_list= +for f in $xm_file; do + case $f in + ansidecl.h ) + xm_file_list="${xm_file_list} \$(srcdir)/../include/$f" + xm_include_list="${xm_include_list} $f" + ;; + auto-host.h ) + xm_file_list="${xm_file_list} $f" + xm_include_list="${xm_include_list} $f" + ;; + * ) + xm_file_list="${xm_file_list} \$(srcdir)/config/$f" + xm_include_list="${xm_include_list} config/$f" + ;; + esac +done + +host_xm_file_list= +host_xm_include_list= +for f in $host_xm_file; do + case $f in + ansidecl.h ) + host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f" + host_xm_include_list="${host_xm_include_list} $f" + ;; + auto-host.h ) + host_xm_file_list="${host_xm_file_list} $f" + host_xm_include_list="${host_xm_include_list} $f" + ;; + * ) + host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" + host_xm_include_list="${host_xm_include_list} config/$f" + ;; + esac +done + +build_xm_file_list= +for f in $build_xm_file; do + case $f in + ansidecl.h ) + build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f" + build_xm_include_list="${build_xm_include_list} $f" + ;; + auto-build.h | auto-host.h ) + build_xm_file_list="${build_xm_file_list} $f" + build_xm_include_list="${build_xm_include_list} $f" + ;; + * ) + build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" + build_xm_include_list="${build_xm_include_list} config/$f" + ;; + esac +done + +# Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a +# cross-compiler which does not use the native headers and libraries. +# Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR. +CROSS= AC_SUBST(CROSS) +ALL=all.internal AC_SUBST(ALL) +SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR) + +if test "x$with_build_sysroot" != x; then + build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)' +else + # This value is used, even on a native system, because + # CROSS_SYSTEM_HEADER_DIR is just + # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR). + build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)' +fi + +if test x$host != x$target +then + CROSS="-DCROSS_DIRECTORY_STRUCTURE" + ALL=all.cross + SYSTEM_HEADER_DIR=$build_system_header_dir + case "$host","$target" in + # Darwin crosses can use the host system's libraries and headers, + # because of the fat library support. Of course, it must be the + # same version of Darwin on both sides. Allow the user to + # just say --target=foo-darwin without a version number to mean + # "the version on this system". + *-*-darwin*,*-*-darwin*) + hostos=`echo $host | sed 's/.*-darwin/darwin/'` + targetos=`echo $target | sed 's/.*-darwin/darwin/'` + if test $hostos = $targetos -o $targetos = darwin ; then + CROSS= + SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' + with_headers=yes + fi + ;; + + i?86-*-*,x86_64-*-* \ + | powerpc*-*-*,powerpc64*-*-*) + CROSS="$CROSS -DNATIVE_CROSS" ;; + esac + + case $target in + *-*-mingw*) + if test "x$with_headers" = x; then + with_headers=yes + fi + ;; + *) + ;; + esac +elif test "x$TARGET_SYSTEM_ROOT" != x; then + SYSTEM_HEADER_DIR=$build_system_header_dir +fi + +# If this is a cross-compiler that does not +# have its own set of headers then define +# inhibit_libc + +# If this is using newlib, without having the headers available now, +# then define inhibit_libc in LIBGCC2_CFLAGS. +# This prevents libgcc2 from containing any code which requires libc +# support. +: ${inhibit_libc=false} +if { { test x$host != x$target && test "x$with_sysroot" = x ; } || + test x$with_newlib = xyes ; } && + { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then + inhibit_libc=true +fi +AC_SUBST(inhibit_libc) + +# When building gcc with a cross-compiler, we need to adjust things so +# that the generator programs are still built with the native compiler. +# Also, we cannot run fixincludes. + +# These are the normal (build=host) settings: +CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD) +BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS) +BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS) +STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC) + +# And these apply if build != host, or we are generating coverage data +if test x$build != x$host || test "x$coverage_flags" != x +then + BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)' + BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)' +fi + +# Expand extra_headers to include complete path. +# This substitutes for lots of t-* files. +extra_headers_list= +# Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers. +for file in ${extra_headers} ; do + extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}" +done + +# If use_gcc_tgmath is set, append ginclude/tgmath.h. +if test x"$use_gcc_tgmath" = xyes +then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h" +fi + +# Define collect2 in Makefile. +case $host_can_use_collect2 in + no) collect2= ;; + *) collect2='collect2$(exeext)' ;; +esac +AC_SUBST([collect2]) + +# Add a definition of USE_COLLECT2 if system wants one. +case $use_collect2 in + no) use_collect2= ;; + "") ;; + *) + host_xm_defines="${host_xm_defines} USE_COLLECT2" + xm_defines="${xm_defines} USE_COLLECT2" + case $host_can_use_collect2 in + no) + AC_MSG_ERROR([collect2 is required but cannot be built on this system]) + ;; + esac + ;; +esac + +AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}", +[Define to the name of the LTO plugin DSO that must be + passed to the linker's -plugin=LIB option.]) + +# --------------------------- +# Assembler & linker features +# --------------------------- + +# During stage 2, ld is actually gcc/collect-ld, which is a small script to +# discern between when to use prev-ld/ld-new and when to use ld/ld-new. +# However when ld-new is first executed from the build tree, libtool will +# relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers +# to the build tree. While doing this we need to use the previous-stage +# linker, or we have an infinite loop. The presence of a shell script as +# ld/ld-new, and the fact that the script *uses ld itself*, is what confuses +# the gcc/collect-ld script. So we need to know how libtool works, or +# exec-tool will fail. + +m4_defun([_LT_CONFIG_COMMANDS], []) +AC_PROG_LIBTOOL +AC_SUBST(objdir) +AC_SUBST(enable_fast_install) + +# Identify the assembler which will work hand-in-glove with the newly +# built GCC, so that we can examine its features. This is the assembler +# which will be driven by the driver program. +# +# If build != host, and we aren't building gas in-tree, we identify a +# build->target assembler and hope that it will have the same features +# as the host->target assembler we'll be using. +gcc_cv_gas_major_version= +gcc_cv_gas_minor_version= +gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas + +m4_pattern_allow([AS_FOR_TARGET])dnl +AS_VAR_SET_IF(gcc_cv_as,, [ +if test -x "$DEFAULT_ASSEMBLER"; then + gcc_cv_as="$DEFAULT_ASSEMBLER" +elif test -f $gcc_cv_as_gas_srcdir/configure.in \ + && test -f ../gas/Makefile \ + && test x$build = x$host; then + gcc_cv_as=../gas/as-new$build_exeext +elif test -x as$build_exeext; then + # Build using assembler in the current directory. + gcc_cv_as=./as$build_exeext +elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then + gcc_cv_as="$AS_FOR_TARGET" +else + AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET) +fi]) + +ORIGINAL_AS_FOR_TARGET=$gcc_cv_as +AC_SUBST(ORIGINAL_AS_FOR_TARGET) +case "$ORIGINAL_AS_FOR_TARGET" in + ./as | ./as$build_exeext) ;; + *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;; +esac + +AC_MSG_CHECKING(what assembler to use) +if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then + # Single tree build which includes gas. We want to prefer it + # over whatever linker top-level may have detected, since + # we'll use what we're building after installation anyway. + AC_MSG_RESULT(newly built gas) + in_tree_gas=yes + _gcc_COMPUTE_GAS_VERSION + in_tree_gas_is_elf=no + if grep 'obj_format = elf' ../gas/Makefile > /dev/null \ + || (grep 'obj_format = multi' ../gas/Makefile \ + && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null + then + in_tree_gas_is_elf=yes + fi +else + AC_MSG_RESULT($gcc_cv_as) + in_tree_gas=no +fi + +# Identify the linker which will work hand-in-glove with the newly +# built GCC, so that we can examine its features. This is the linker +# which will be driven by the driver program. +# +# If build != host, and we aren't building gas in-tree, we identify a +# build->target linker and hope that it will have the same features +# as the host->target linker we'll be using. +gcc_cv_gld_major_version= +gcc_cv_gld_minor_version= +gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld +gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd + +AS_VAR_SET_IF(gcc_cv_ld,, [ +if test -x "$DEFAULT_LINKER"; then + gcc_cv_ld="$DEFAULT_LINKER" +elif test -f $gcc_cv_ld_gld_srcdir/configure.in \ + && test -f ../ld/Makefile \ + && test x$build = x$host; then + gcc_cv_ld=../ld/ld-new$build_exeext +elif test -x collect-ld$build_exeext; then + # Build using linker in the current directory. + gcc_cv_ld=./collect-ld$build_exeext +elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then + gcc_cv_ld="$LD_FOR_TARGET" +else + AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET) +fi]) + +ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld +PLUGIN_LD=`basename $gcc_cv_ld` +AC_ARG_WITH(plugin-ld, +[ --with-plugin-ld=[[ARG]] specify the plugin linker], +[if test x"$withval" != x; then + ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval" + PLUGIN_LD="$withval" + fi]) +AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET) +AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker]) + +# Check to see if we are using gold instead of ld +AC_MSG_CHECKING(whether we are using gold) +ld_is_gold=no +if test x$gcc_cv_ld != x; then + if $gcc_cv_ld --version 2>/dev/null | sed 1q \ + | grep "GNU gold" > /dev/null; then + ld_is_gold=yes + fi +fi +AC_MSG_RESULT($ld_is_gold) + +ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld +AC_SUBST(ORIGINAL_LD_FOR_TARGET) +case "$ORIGINAL_LD_FOR_TARGET" in + ./collect-ld | ./collect-ld$build_exeext) ;; + *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;; +esac + +AC_MSG_CHECKING(what linker to use) +if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then + # Single tree build which includes ld. We want to prefer it + # over whatever linker top-level may have detected, since + # we'll use what we're building after installation anyway. + AC_MSG_RESULT(newly built ld) + in_tree_ld=yes + in_tree_ld_is_elf=no + if (grep 'EMUL = .*elf' ../ld/Makefile \ + || grep 'EMUL = .*linux' ../ld/Makefile \ + || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then + in_tree_ld_is_elf=yes + fi + for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.in $gcc_cv_ld_gld_srcdir/Makefile.in + do +changequote(,)dnl + gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f` + if test x$gcc_cv_gld_version != x; then + break + fi + done + gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"` + gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"` +changequote([,])dnl +else + AC_MSG_RESULT($gcc_cv_ld) + in_tree_ld=no +fi + +# Figure out what nm we will be using. +gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils +AS_VAR_SET_IF(gcc_cv_nm,, [ +if test -f $gcc_cv_binutils_srcdir/configure.in \ + && test -f ../binutils/Makefile \ + && test x$build = x$host; then + gcc_cv_nm=../binutils/nm-new$build_exeext +elif test -x nm$build_exeext; then + gcc_cv_nm=./nm$build_exeext +elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then + gcc_cv_nm="$NM_FOR_TARGET" +else + AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET) +fi]) + +AC_MSG_CHECKING(what nm to use) +if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then + # Single tree build which includes binutils. + AC_MSG_RESULT(newly built nm) + in_tree_nm=yes +else + AC_MSG_RESULT($gcc_cv_nm) + in_tree_nm=no +fi + +ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm +AC_SUBST(ORIGINAL_NM_FOR_TARGET) +case "$ORIGINAL_NM_FOR_TARGET" in + ./nm | ./nm$build_exeext) ;; + *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;; +esac + + +# Figure out what objdump we will be using. +AS_VAR_SET_IF(gcc_cv_objdump,, [ +if test -f $gcc_cv_binutils_srcdir/configure.in \ + && test -f ../binutils/Makefile \ + && test x$build = x$host; then + # Single tree build which includes binutils. + gcc_cv_objdump=../binutils/objdump$build_exeext +elif test -x objdump$build_exeext; then + gcc_cv_objdump=./objdump$build_exeext +elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then + gcc_cv_objdump="$OBJDUMP_FOR_TARGET" +else + AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET) +fi]) + +AC_MSG_CHECKING(what objdump to use) +if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then + # Single tree build which includes binutils. + AC_MSG_RESULT(newly built objdump) +elif test x$gcc_cv_objdump = x; then + AC_MSG_RESULT(not found) +else + AC_MSG_RESULT($gcc_cv_objdump) +fi + +# Figure out what readelf we will be using. +AS_VAR_SET_IF(gcc_cv_readelf,, [ +if test -f $gcc_cv_binutils_srcdir/configure.in \ + && test -f ../binutils/Makefile \ + && test x$build = x$host; then + # Single tree build which includes binutils. + gcc_cv_readelf=../binutils/readelf$build_exeext +elif test -x readelf$build_exeext; then + gcc_cv_readelf=./readelf$build_exeext +else + AC_PATH_PROG(gcc_cv_readelf, readelf) +fi]) + +AC_MSG_CHECKING(what readelf to use) +if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then + # Single tree build which includes binutils. + AC_MSG_RESULT(newly built readelf) +elif test x$gcc_cv_readelf = x; then + AC_MSG_RESULT(not found) +else + AC_MSG_RESULT($gcc_cv_readelf) +fi + +# Figure out what assembler alignment features are present. +gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align, + [2,6,0],, +[.balign 4 +.p2align 2],, +[AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1, + [Define if your assembler supports .balign and .p2align.])]) + +gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align, + [2,8,0],, + [.p2align 4,,7],, +[AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1, + [Define if your assembler supports specifying the maximum number + of bytes to skip when using the GAS .p2align command.])]) + +gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16, + [2,8,0],, + [.literal16],, +[AC_DEFINE(HAVE_GAS_LITERAL16, 1, + [Define if your assembler supports .literal16.])]) + +gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1, + [elf,2,9,0],, + [conftest_label1: .word 0 +.subsection -1 +conftest_label2: .word 0 +.previous], + [if test x$gcc_cv_nm != x; then + $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1 + $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2 + if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1 + then : + else gcc_cv_as_subsection_m1=yes + fi + rm -f conftest.nm1 conftest.nm2 + fi], + [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1, + [Define if your assembler supports .subsection and .subsection -1 starts + emitting at the beginning of your section.])]) + +gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak, + [2,2,0],, + [ .weak foobar],, +[AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])]) + +gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref, + [2,17,0],, + [ .weakref foobar, barfnot],, +[AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])]) + +gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat, + [2,15,91],, + [ .SPACE $TEXT$ + .NSUBSPA $CODE$,COMDAT],, +[AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])]) + +# .hidden needs to be supported in both the assembler and the linker, +# because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN. +# This is irritatingly difficult to feature test for; we have to check the +# date string after the version number. If we've got an in-tree +# ld, we don't know its patchlevel version, so we set the baseline at 2.13 +# to be safe. +# The gcc_GAS_CHECK_FEATURE call just sets a cache variable. +gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden, + [elf,2,13,0],, +[ .hidden foobar +foobar:],[ +# Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with +# STV_HIDDEN, so disable .hidden support if so. +case "${target}" in + i?86-*-solaris2*) + if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then + cat > conftest.s <<EOF +.globl hidden + .hidden hidden +hidden: +.globl default + .set default,hidden +EOF + if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \ + && $gcc_cv_objdump -t conftest.o 2>/dev/null | \ + grep '\.hidden default' > /dev/null; then + gcc_cv_as_hidden=no + else + gcc_cv_as_hidden=yes + fi + else + # Assume bug is present if objdump is missing. + gcc_cv_as_hidden=no + fi + ;; + *) + gcc_cv_as_hidden=yes + ;; +esac]) + +# gnu_indirect_function type is an extension proposed at +# http://groups.google/com/group/generic-abi/files. It allows dynamic runtime +# selection of function implementation +AC_ARG_ENABLE(gnu-indirect-function, + [AS_HELP_STRING([--enable-gnu-indirect-function], + [enable the use of the @gnu_indirect_function to glibc systems])], + [case $enable_gnu_indirect_function in + yes | no) ;; + *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function. +Valid choices are 'yes' and 'no'.]) ;; + esac], + [enable_gnu_indirect_function="$default_gnu_indirect_function"]) +if test x$enable_gnu_indirect_function = xyes; then + AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1, + [Define if your system supports gnu indirect functions.]) +fi + +changequote(,)dnl +if test $in_tree_ld != yes ; then + ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q` + if test x"$ld_is_gold" = xyes; then + gcc_cv_ld_hidden=yes + elif echo "$ld_ver" | grep GNU > /dev/null; then + ld_vers=`echo $ld_ver | sed -n \ + -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` + ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'` + ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` + ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` + ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'` + else + case "${target}" in + *-*-solaris2*) + # + # Solaris 2 ld -V output looks like this for a regular version: + # + # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699 + # + # but test versions add stuff at the end: + # + # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10 + # + ld_ver=`$gcc_cv_ld -V 2>&1` + if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then + ld_vers=`echo $ld_ver | sed -n \ + -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'` + ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` + ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` + fi + ;; + esac + fi +fi +changequote([,])dnl + +AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden, +[[if test $in_tree_ld = yes ; then + gcc_cv_ld_hidden=no + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_ld_hidden=yes + fi +else + gcc_cv_ld_hidden=yes + if echo "$ld_ver" | grep GNU > /dev/null; then + if test 0"$ld_date" -lt 20020404; then + if test -n "$ld_date"; then + # If there was date string, but was earlier than 2002-04-04, fail + gcc_cv_ld_hidden=no + elif test -z "$ld_vers"; then + # If there was no date string nor ld version number, something is wrong + gcc_cv_ld_hidden=no + else + test -z "$ld_vers_patch" && ld_vers_patch=0 + if test "$ld_vers_major" -lt 2; then + gcc_cv_ld_hidden=no + elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then + gcc_cv_ld_hidden="no" + elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then + gcc_cv_ld_hidden=no + fi + fi + fi + else + case "${target}" in + hppa64*-*-hpux* | ia64*-*-hpux*) + gcc_cv_ld_hidden=yes + ;; + *-*-solaris2.8*) + # .hidden support was backported to Solaris 8, starting with ld + # version 1.276. + if test "$ld_vers_minor" -ge 276; then + gcc_cv_ld_hidden=yes + else + gcc_cv_ld_hidden=no + fi + ;; + *-*-solaris2.9* | *-*-solaris2.1[0-9]*) + # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but + # .symbolic was only added in Solaris 9 12/02. + gcc_cv_ld_hidden=yes + ;; + *) + gcc_cv_ld_hidden=no + ;; + esac + fi +fi]]) +libgcc_visibility=no +AC_SUBST(libgcc_visibility) +GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN]) +if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then + libgcc_visibility=yes + AC_DEFINE(HAVE_GAS_HIDDEN, 1, + [Define if your assembler and linker support .hidden.]) +fi + +AC_MSG_CHECKING(linker read-only and read-write section mixing) +gcc_cv_ld_ro_rw_mix=unknown +if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_ld_ro_rw_mix=read-write + fi +elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then + echo '.section myfoosect, "a"' > conftest1.s + echo '.section myfoosect, "aw"' > conftest2.s + echo '.byte 1' >> conftest2.s + echo '.section myfoosect, "a"' > conftest3.s + echo '.byte 0' >> conftest3.s + if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \ + && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \ + && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \ + && $gcc_cv_ld -shared -o conftest1.so conftest1.o \ + conftest2.o conftest3.o > /dev/null 2>&1; then + gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \ + | sed -e '/myfoosect/!d' -e N` + if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then + if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then + gcc_cv_ld_ro_rw_mix=read-only + else + gcc_cv_ld_ro_rw_mix=read-write + fi + fi + fi +changequote(,)dnl + rm -f conftest.* conftest[123].* +changequote([,])dnl +fi +if test x$gcc_cv_ld_ro_rw_mix = xread-write; then + AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1, + [Define if your linker links a mix of read-only + and read-write sections into a read-write section.]) +fi +AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix) + +# Check if we have .[us]leb128, and support symbol arithmetic with it. +gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128, + [elf,2,11,0],, +[ .data + .uleb128 L2 - L1 +L1: + .uleb128 1280 + .sleb128 -1010 +L2:], +[[# GAS versions before 2.11 do not support uleb128, + # despite appearing to. + # ??? There exists an elf-specific test that will crash + # the assembler. Perhaps it's better to figure out whether + # arbitrary sections are supported and try the test. + as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q` + if echo "$as_ver" | grep GNU > /dev/null; then + as_vers=`echo $as_ver | sed -n \ + -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` + as_major=`expr "$as_vers" : '\([0-9]*\)'` + as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'` + if test $as_major -eq 2 && test $as_minor -lt 11 + then : + else gcc_cv_as_leb128=yes + fi + fi]], + [AC_DEFINE(HAVE_AS_LEB128, 1, + [Define if your assembler supports .sleb128 and .uleb128.])]) + +# Check if we have assembler support for unwind directives. +gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive, + ,, +[ .text + .cfi_startproc + .cfi_offset 0, 0 + .cfi_same_value 1 + .cfi_def_cfa 1, 2 + .cfi_escape 1, 2, 3, 4, 5 + .cfi_endproc], +[case "$target" in + *-*-solaris*) + # If the linker used on Solaris (like Sun ld) isn't capable of merging + # read-only and read-write sections, we need to make sure that the + # assembler used emits read-write .eh_frame sections. + if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then + if test "x$gcc_cv_objdump" != x; then + if $gcc_cv_objdump -h conftest.o 2>/dev/null | \ + sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then + gcc_cv_as_cfi_directive=no + else + case "$target" in + i?86-*-solaris2.1[[0-9]]*) + # On Solaris/x86, make sure that GCC and gas agree on using + # read-only .eh_frame sections for 64-bit. + if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \ + $gcc_cv_objdump -h conftest.o 2>/dev/null | \ + sed -e /.eh_frame/!d -e N | \ + grep READONLY > /dev/null; then + gcc_cv_as_cfi_directive=yes + else + gcc_cv_as_cfi_directive=no + fi + ;; + *) + gcc_cv_as_cfi_directive=yes + ;; + esac + fi + else + # no objdump, err on the side of caution + gcc_cv_as_cfi_directive=no + fi + else + gcc_cv_as_cfi_directive=yes + fi + ;; + *-*-*) + gcc_cv_as_cfi_directive=yes + ;; +esac]) +if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then +gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working, + ,, +[ .text + .cfi_startproc + .cfi_adjust_cfa_offset 64 + .skip 75040, 0 + .cfi_adjust_cfa_offset 128 + .cfi_endproc], +[[ +if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \ + | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then + gcc_cv_as_cfi_advance_working=yes +fi +]]) +else + # no objdump, err on the side of caution + gcc_cv_as_cfi_advance_working=no +fi +GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE) +AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE, + [`if test $gcc_cv_as_cfi_directive = yes \ + && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`], + [Define 0/1 if your assembler supports CFI directives.]) + +GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE) +gcc_GAS_CHECK_FEATURE([cfi personality directive], + gcc_cv_as_cfi_personality_directive, ,, +[ .text + .cfi_startproc + .cfi_personality 0, symbol + .cfi_endproc]) +AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE, + [`if test $gcc_cv_as_cfi_personality_directive = yes; + then echo 1; else echo 0; fi`], + [Define 0/1 if your assembler supports .cfi_personality.]) + +gcc_GAS_CHECK_FEATURE([cfi sections directive], + gcc_cv_as_cfi_sections_directive, ,, +[ .text + .cfi_sections .debug_frame, .eh_frame + .cfi_startproc + .cfi_endproc], +[case $target_os in + win32 | pe | cygwin* | mingw32* | uwin*) + # Need to check that we generated the correct relocation for the + # .debug_frame section. This was fixed for binutils 2.21. + gcc_cv_as_cfi_sections_directive=no + if test "x$gcc_cv_objdump" != x; then + if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \ + grep secrel > /dev/null; then + gcc_cv_as_cfi_sections_directive=yes + fi + fi + ;; + *) + gcc_cv_as_cfi_sections_directive=yes + ;; +esac]) +GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE) +AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE, + [`if test $gcc_cv_as_cfi_sections_directive = yes; + then echo 1; else echo 0; fi`], + [Define 0/1 if your assembler supports .cfi_sections.]) + +# GAS versions up to and including 2.11.0 may mis-optimize +# .eh_frame data. +gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame, + [elf,2,12,0],, +[ .text +.LFB1: + .4byte 0 +.L1: + .4byte 0 +.LFE1: + .section .eh_frame,"aw",@progbits +__FRAME_BEGIN__: + .4byte .LECIE1-.LSCIE1 +.LSCIE1: + .4byte 0x0 + .byte 0x1 + .ascii "z\0" + .byte 0x1 + .byte 0x78 + .byte 0x1a + .byte 0x0 + .byte 0x4 + .4byte 1 + .p2align 1 +.LECIE1: +.LSFDE1: + .4byte .LEFDE1-.LASFDE1 +.LASFDE1: + .4byte .LASFDE1-__FRAME_BEGIN__ + .4byte .LFB1 + .4byte .LFE1-.LFB1 + .byte 0x4 + .4byte .LFE1-.LFB1 + .byte 0x4 + .4byte .L1-.LFB1 +.LEFDE1:], +[ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@. +cat > conftest.lit <<EOF + 0000 10000000 00000000 017a0001 781a0004 .........z..x... + 0010 01000000 12000000 18000000 00000000 ................ + 0020 08000000 04080000 0044 .........D @&t@ +EOF +cat > conftest.big <<EOF + 0000 00000010 00000000 017a0001 781a0004 .........z..x... + 0010 00000001 00000012 00000018 00000000 ................ + 0020 00000008 04000000 0844 .........D @&t@ +EOF + # If the assembler didn't choke, and we can objdump, + # and we got the correct data, then succeed. + # The text in the here-document typically retains its unix-style line + # endings, while the output of objdump will use host line endings. + # Therefore, use diff -b for the comparisons. + if test x$gcc_cv_objdump != x \ + && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \ + | tail -3 > conftest.got \ + && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \ + || diff -b conftest.big conftest.got > /dev/null 2>&1; } + then + gcc_cv_as_eh_frame=yes + elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then + gcc_cv_as_eh_frame=buggy + else + # Uh oh, what do we do now? + gcc_cv_as_eh_frame=no + fi]) + +if test $gcc_cv_as_eh_frame = buggy; then + AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1, + [Define if your assembler mis-optimizes .eh_frame data.]) +fi + +gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, + [elf,2,12,0], [--fatal-warnings], + [.section .rodata.str, "aMS", @progbits, 1]) +if test $gcc_cv_as_shf_merge = no; then + gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, + [elf,2,12,0], [--fatal-warnings], + [.section .rodata.str, "aMS", %progbits, 1]) +fi +AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE, + [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`], +[Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.]) + +gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group, + [elf,2,16,0], [--fatal-warnings], + [.section .text,"axG",@progbits,.foo,comdat]) +if test $gcc_cv_as_comdat_group = yes; then + gcc_cv_as_comdat_group_percent=no +else + gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent, + [elf,2,16,0], [--fatal-warnings], + [.section .text,"axG",%progbits,.foo,comdat]) +fi +if test x"$ld_is_gold" = xyes; then + comdat_group=yes +elif test $in_tree_ld = yes ; then + comdat_group=no + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + comdat_group=yes + fi +elif echo "$ld_ver" | grep GNU > /dev/null; then + comdat_group=yes + if test 0"$ld_date" -lt 20050308; then + if test -n "$ld_date"; then + # If there was date string, but was earlier than 2005-03-08, fail + comdat_group=no + elif test "$ld_vers_major" -lt 2; then + comdat_group=no + elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then + comdat_group=no + fi + fi +else +changequote(,)dnl + case "${target}" in + *-*-solaris2.1[1-9]*) + # Sun ld has COMDAT group support since Solaris 9, but it doesn't + # interoperate with GNU as until Solaris 11 build 130, i.e. ld + # version 1.688. + # + # FIXME: Maybe need to refine later when COMDAT group support with + # Sun as is implemented. + if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then + comdat_group=yes + else + comdat_group=no + fi + ;; + *) + # Assume linkers other than GNU ld don't support COMDAT group. + comdat_group=no + ;; + esac +changequote([,])dnl +fi +# Allow overriding the automatic COMDAT group tests above. +AC_ARG_ENABLE(comdat, + [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])], + [comdat_group="$enable_comdat"]) +if test $comdat_group = no; then + gcc_cv_as_comdat_group=no + gcc_cv_as_comdat_group_percent=no +fi +AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP, + [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`], +[Define 0/1 if your assembler and linker support COMDAT groups.]) + +gcc_GAS_CHECK_FEATURE([line table discriminator support], + gcc_cv_as_discriminator, + [2,19,51],, +[ .text + .file 1 "conf.c" + .loc 1 1 0 discriminator 1],, +[AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1, + [Define if your assembler supports the .loc discriminator sub-directive.])]) + +# Thread-local storage - the check is heavily parameterized. +conftest_s= +tls_first_major= +tls_first_minor= +tls_as_opt= +case "$target" in +changequote(,)dnl + alpha*-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +foo: .long 25 + .text + ldq $27,__tls_get_addr($29) !literal!1 + lda $16,foo($29) !tlsgd!1 + jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 + ldq $27,__tls_get_addr($29) !literal!2 + lda $16,foo($29) !tlsldm!2 + jsr $26,($27),__tls_get_addr !lituse_tlsldm!2 + ldq $1,foo($29) !gotdtprel + ldah $2,foo($29) !dtprelhi + lda $3,foo($2) !dtprello + lda $4,foo($29) !dtprel + ldq $1,foo($29) !gottprel + ldah $2,foo($29) !tprelhi + lda $3,foo($2) !tprello + lda $4,foo($29) !tprel' + tls_first_major=2 + tls_first_minor=13 + tls_as_opt=--fatal-warnings + ;; + cris-*-*|crisv32-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +x: .long 25 + .text + move.d x:IE,$r10 + nop' + tls_first_major=2 + tls_first_minor=20 + tls_as_opt=--fatal-warnings + ;; + frv*-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +x: .long 25 + .text + call #gettlsoff(x)' + tls_first_major=2 + tls_first_minor=14 + ;; + hppa*-*-linux*) + conftest_s=' +t1: .reg %r20 +t2: .reg %r21 +gp: .reg %r19 + .section ".tdata","awT",@progbits +foo: .long 25 + .text + .align 4 + addil LT%foo-$tls_gdidx$,gp + ldo RT%foo-$tls_gdidx$(%r1),%arg0 + b __tls_get_addr + nop + addil LT%foo-$tls_ldidx$,gp + b __tls_get_addr + ldo RT%foo-$tls_ldidx$(%r1),%arg0 + addil LR%foo-$tls_dtpoff$,%ret0 + ldo RR%foo-$tls_dtpoff$(%r1),%t1 + mfctl %cr27,%t1 + addil LT%foo-$tls_ieoff$,gp + ldw RT%foo-$tls_ieoff$(%r1),%t2 + add %t1,%t2,%t3 + mfctl %cr27,%t1 + addil LR%foo-$tls_leoff$,%t1 + ldo RR%foo-$tls_leoff$(%r1),%t2' + tls_first_major=2 + tls_first_minor=15 + tls_as_opt=--fatal-warnings + ;; + arm*-*-*) + conftest_s=' + .section ".tdata","awT",%progbits +foo: .long 25 + .text +.word foo(gottpoff) +.word foo(tpoff) +.word foo(tlsgd) +.word foo(tlsldm) +.word foo(tlsldo)' + tls_first_major=2 + tls_first_minor=17 + ;; + i[34567]86-*-*) + case "$target" in + i[34567]86-*-solaris2.*) + on_solaris=yes + tga_func=___tls_get_addr + ;; + *) + on_solaris=no + ;; + esac + if test x$on_solaris = xyes && test x$gas_flag = xno; then + conftest_s=' + .section .tdata,"awt",@progbits' + tls_first_major=0 + tls_first_minor=0 +changequote([,])dnl + AC_DEFINE(TLS_SECTION_ASM_FLAG, 't', +[Define to the flag used to mark TLS sections if the default (`T') doesn't work.]) +changequote(,)dnl + else + conftest_s=' + .section ".tdata","awT",@progbits' + tls_first_major=2 + tls_first_minor=14 + tls_as_opt="--fatal-warnings" + fi + conftest_s="$conftest_s +foo: .long 25 + .text + movl %gs:0, %eax + leal foo@tlsgd(,%ebx,1), %eax + leal foo@tlsldm(%ebx), %eax + leal foo@dtpoff(%eax), %edx + movl foo@gottpoff(%ebx), %eax + subl foo@gottpoff(%ebx), %eax + addl foo@gotntpoff(%ebx), %eax + movl foo@indntpoff, %eax + movl \$foo@tpoff, %eax + subl \$foo@tpoff, %eax + leal foo@ntpoff(%ecx), %eax" + ;; + x86_64-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +foo: .long 25 + .text + movq %fs:0, %rax + leaq foo@TLSGD(%rip), %rdi + leaq foo@TLSLD(%rip), %rdi + leaq foo@DTPOFF(%rax), %rdx + movq foo@GOTTPOFF(%rip), %rax + movq $foo@TPOFF, %rax' + tls_first_major=2 + tls_first_minor=14 + tls_as_opt=--fatal-warnings + ;; + ia64-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +foo: data8 25 + .text + addl r16 = @ltoff(@dtpmod(foo#)), gp + addl r17 = @ltoff(@dtprel(foo#)), gp + addl r18 = @ltoff(@tprel(foo#)), gp + addl r19 = @dtprel(foo#), gp + adds r21 = @dtprel(foo#), r13 + movl r23 = @dtprel(foo#) + addl r20 = @tprel(foo#), gp + adds r22 = @tprel(foo#), r13 + movl r24 = @tprel(foo#)' + tls_first_major=2 + tls_first_minor=13 + tls_as_opt=--fatal-warnings + ;; + mips*-*-*) + conftest_s=' + .section .tdata,"awT",@progbits +x: + .word 2 + .text + addiu $4, $28, %tlsgd(x) + addiu $4, $28, %tlsldm(x) + lui $4, %dtprel_hi(x) + addiu $4, $4, %dtprel_lo(x) + lw $4, %gottprel(x)($28) + lui $4, %tprel_hi(x) + addiu $4, $4, %tprel_lo(x)' + tls_first_major=2 + tls_first_minor=16 + tls_as_opt='-32 --fatal-warnings' + ;; + m68k-*-*) + conftest_s=' + .section .tdata,"awT",@progbits +x: + .word 2 + .text +foo: + move.l x@TLSGD(%a5),%a0 + move.l x@TLSLDM(%a5),%a0 + move.l x@TLSLDO(%a5),%a0 + move.l x@TLSIE(%a5),%a0 + move.l x@TLSLE(%a5),%a0' + tls_first_major=2 + tls_first_minor=19 + tls_as_opt='--fatal-warnings' + ;; + powerpc-*-*) + conftest_s=' + .section ".tdata","awT",@progbits + .align 2 +ld0: .space 4 +ld1: .space 4 +x1: .space 4 +x2: .space 4 +x3: .space 4 + .text + addi 3,31,ld0@got@tlsgd + bl __tls_get_addr + addi 3,31,x1@got@tlsld + bl __tls_get_addr + addi 9,3,x1@dtprel + addis 9,3,x2@dtprel@ha + addi 9,9,x2@dtprel@l + lwz 9,x3@got@tprel(31) + add 9,9,x@tls + addi 9,2,x1@tprel + addis 9,2,x2@tprel@ha + addi 9,9,x2@tprel@l' + tls_first_major=2 + tls_first_minor=14 + tls_as_opt="-a32 --fatal-warnings" + ;; + powerpc64-*-*) + conftest_s=' + .section ".tdata","awT",@progbits + .align 3 +ld0: .space 8 +ld1: .space 8 +x1: .space 8 +x2: .space 8 +x3: .space 8 + .text + addi 3,2,ld0@got@tlsgd + bl .__tls_get_addr + nop + addi 3,2,ld1@toc + bl .__tls_get_addr + nop + addi 3,2,x1@got@tlsld + bl .__tls_get_addr + nop + addi 9,3,x1@dtprel + bl .__tls_get_addr + nop + addis 9,3,x2@dtprel@ha + addi 9,9,x2@dtprel@l + bl .__tls_get_addr + nop + ld 9,x3@got@dtprel(2) + add 9,9,3 + bl .__tls_get_addr + nop' + tls_first_major=2 + tls_first_minor=14 + tls_as_opt="-a64 --fatal-warnings" + ;; + s390-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +foo: .long 25 + .text + .long foo@TLSGD + .long foo@TLSLDM + .long foo@DTPOFF + .long foo@NTPOFF + .long foo@GOTNTPOFF + .long foo@INDNTPOFF + l %r1,foo@GOTNTPOFF(%r12) + l %r1,0(%r1):tls_load:foo + bas %r14,0(%r1,%r13):tls_gdcall:foo + bas %r14,0(%r1,%r13):tls_ldcall:foo' + tls_first_major=2 + tls_first_minor=14 + tls_as_opt="-m31 --fatal-warnings" + ;; + s390x-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +foo: .long 25 + .text + .quad foo@TLSGD + .quad foo@TLSLDM + .quad foo@DTPOFF + .quad foo@NTPOFF + .quad foo@GOTNTPOFF + lg %r1,foo@GOTNTPOFF(%r12) + larl %r1,foo@INDNTPOFF + brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo + brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo' + tls_first_major=2 + tls_first_minor=14 + tls_as_opt="-m64 -Aesame --fatal-warnings" + ;; + sh-*-* | sh[34]-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +foo: .long 25 + .text + .long foo@TLSGD + .long foo@TLSLDM + .long foo@DTPOFF + .long foo@GOTTPOFF + .long foo@TPOFF' + tls_first_major=2 + tls_first_minor=13 + tls_as_opt=--fatal-warnings + ;; + sparc*-*-*) + case "$target" in + sparc*-sun-solaris2.*) + on_solaris=yes + tga_func=__tls_get_addr + ;; + *) + on_solaris=no + ;; + esac + if test x$on_solaris = xyes && test x$gas_flag = xno; then + conftest_s=' + .section ".tdata",#alloc,#write,#tls' + tls_first_major=0 + tls_first_minor=0 + else + conftest_s=' + .section ".tdata","awT",@progbits' + tls_first_major=2 + tls_first_minor=14 + tls_as_opt="-32 --fatal-warnings" + fi + conftest_s="$conftest_s +foo: .long 25 + .text + sethi %tgd_hi22(foo), %o0 + add %o0, %tgd_lo10(foo), %o1 + add %l7, %o1, %o0, %tgd_add(foo) + call __tls_get_addr, %tgd_call(foo) + sethi %tldm_hi22(foo), %l1 + add %l1, %tldm_lo10(foo), %l2 + add %l7, %l2, %o0, %tldm_add(foo) + call __tls_get_addr, %tldm_call(foo) + sethi %tldo_hix22(foo), %l3 + xor %l3, %tldo_lox10(foo), %l4 + add %o0, %l4, %l5, %tldo_add(foo) + sethi %tie_hi22(foo), %o3 + add %o3, %tie_lo10(foo), %o3 + ld [%l7 + %o3], %o2, %tie_ld(foo) + add %g7, %o2, %o4, %tie_add(foo) + sethi %tle_hix22(foo), %l1 + xor %l1, %tle_lox10(foo), %o5 + ld [%g7 + %o5], %o1" + ;; + xtensa*-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +foo: .long 25 + .text + movi a8, foo@TLSFUNC + movi a10, foo@TLSARG + callx8.tls a8, foo@TLSCALL' + tls_first_major=2 + tls_first_minor=19 + ;; +changequote([,])dnl +esac +set_have_as_tls=no +if test "x$enable_tls" = xno ; then + : # TLS explicitly disabled. +elif test "x$enable_tls" = xyes ; then + set_have_as_tls=yes # TLS explicitly enabled. +elif test -z "$tls_first_major"; then + : # If we don't have a check, assume no support. +else + gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls, + [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],, + [set_have_as_tls=yes]) +fi +case "$target" in + *-*-irix6*) + # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld + # with TLS support are in use, native TLS cannot work. + set_have_as_tls=no + ;; + *-*-osf*) + # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and + # gld with TLS support are in use, native TLS cannot work. + set_have_as_tls=no + ;; + # TLS was introduced in the Solaris 9 FCS release and backported to + # Solaris 8 patches. Support for GNU-style TLS on x86 was only + # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun + # ld and GCC don't support any longer. + *-*-solaris2.*) + AC_MSG_CHECKING(linker and ld.so.1 TLS support) + ld_tls_support=no + # Check ld and ld.so.1 TLS support. + if echo "$ld_ver" | grep GNU > /dev/null; then + # Assume all interesting versions of GNU ld have TLS support. + # FIXME: still need ld.so.1 support, i.e. ld version checks below. + ld_tls_support=yes + else + case "$target" in + # Solaris 8/x86 ld has GNU style TLS support since version 1.280. + i?86-*-solaris2.8) + min_tls_ld_vers_minor=280 + ;; + # Solaris 8/SPARC ld has TLS support since version 1.272. + sparc*-*-solaris2.8) + min_tls_ld_vers_minor=272 + ;; + # Solaris 9/x86 ld has GNU style TLS support since version 1.374. + i?86-*-solaris2.9) + min_tls_ld_vers_minor=374 + ;; + # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS. + sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*) + min_tls_ld_vers_minor=343 + ;; + esac + if test "$ld_vers_major" -gt 1 || \ + test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then + ld_tls_support=yes + else + set_have_as_tls=no + fi + fi + AC_MSG_RESULT($ld_tls_support) + + save_LIBS="$LIBS" + save_LDFLAGS="$LDFLAGS" + LIBS= + LDFLAGS= + + AC_MSG_CHECKING(alternate thread library) + case "$target" in + # TLS support was backported to Solaris 8 patches, but only lives in + # the alternate thread library which became the default in Solaris 9. + # We want to always use that, irrespective of TLS support. + *-*-solaris2.8) + # Take multilib subdir into account. There's no spec to handle + # this. The 64 symlink exists since Solaris 8. + lwp_dir=/usr/lib/lwp + lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}" + LDFLAGS="-L$lwp_dir -R$lwp_dir" + ;; + *-*-solaris2*) + lwp_dir="none" + lwp_spec="" + ;; + esac + # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support. + AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec", + [Define to the linker flags to use for -pthread.]) + AC_MSG_RESULT($lwp_dir) + + AC_MSG_CHECKING(library containing $tga_func) + # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr + # (32-bit x86) only lived in libthread, so check for that. Keep + # set_have_as_tls if found, disable if not. + AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no]) + # Clear LIBS if we cannot support TLS. + if test $set_have_as_tls = no; then + LIBS= + fi + # Always define LIB_TLS_SPEC, even without TLS support. + AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS", + [Define to the library containing __tls_get_addr/___tls_get_addr.]) + AC_MSG_RESULT($LIBS) + + LIBS="$save_LIBS" + LDFLAGS="$save_LDFLAGS" + ;; +esac +if test $set_have_as_tls = yes ; then + AC_DEFINE(HAVE_AS_TLS, 1, + [Define if your assembler and linker support thread-local storage.]) +fi + +# Target-specific assembler checks. + +AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option) +gcc_cv_ld_static_dynamic=no +gcc_cv_ld_static_option='-Bstatic' +gcc_cv_ld_dynamic_option='-Bdynamic' +if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then + gcc_cv_ld_static_dynamic=yes + fi +elif test x$gcc_cv_ld != x; then + # Check if linker supports -Bstatic/-Bdynamic option + if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \ + && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then + gcc_cv_ld_static_dynamic=yes + else + case "$target" in + # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic. + alpha*-dec-osf*) + gcc_cv_ld_static_dynamic=yes + gcc_cv_ld_static_option="-noso" + gcc_cv_ld_dynamic_option="-so_archive" + ;; + # HP-UX ld uses -a flags to select between shared and archive. + *-*-hpux*) + if test x"$gnu_ld" = xno; then + gcc_cv_ld_static_dynamic=yes + gcc_cv_ld_static_option="-aarchive_shared" + gcc_cv_ld_dynamic_option="-adefault" + fi + ;; + # IRIX 6 ld supports -Bstatic/-Bdynamic. + mips-sgi-irix6*) + gcc_cv_ld_static_dynamic=yes + ;; + # Solaris 2 ld always supports -Bstatic/-Bdynamic. + *-*-solaris2*) + gcc_cv_ld_static_dynamic=yes + ;; + esac + fi +fi +if test x"$gcc_cv_ld_static_dynamic" = xyes; then + AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1, +[Define if your linker supports -Bstatic/-Bdynamic or equivalent options.]) + AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option", +[Define to the linker option to disable use of shared objects.]) + AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option", +[Define to the linker option to enable use of shared objects.]) +fi +AC_MSG_RESULT($gcc_cv_ld_static_dynamic) + +if test x"$demangler_in_ld" = xyes; then + AC_MSG_CHECKING(linker --demangle support) + gcc_cv_ld_demangle=no + if test $in_tree_ld = yes; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \ + gcc_cv_ld_demangle=yes + fi + elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then + # Check if the GNU linker supports --demangle option + if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then + gcc_cv_ld_demangle=yes + fi + fi + if test x"$gcc_cv_ld_demangle" = xyes; then + AC_DEFINE(HAVE_LD_DEMANGLE, 1, +[Define if your linker supports --demangle option.]) + fi + AC_MSG_RESULT($gcc_cv_ld_demangle) +fi + +AC_MSG_CHECKING(linker plugin support) +gcc_cv_lto_plugin=no +if test -f liblto_plugin.la; then + if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET=" = x"$gcc_cv_ld"; then + if test x"$ld_is_gold" = xyes; then + gcc_cv_lto_plugin=yes + elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then \ + gcc_cv_lto_plugin=yes + fi + # Check if the linker supports --plugin-opt option + elif $ORIGINAL_PLUGIN_LD_FOR_TARGET --help 2>/dev/null | grep plugin-opt > /dev/null; then + gcc_cv_lto_plugin=yes + fi +fi +if test x"$gcc_cv_lto_plugin" = xyes; then + AC_DEFINE(HAVE_LTO_PLUGIN, 1, +[Define if your linker supports plugin.]) +fi +AC_MSG_RESULT($gcc_cv_lto_plugin) + +case "$target" in + # All TARGET_ABI_OSF targets. + alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*) + gcc_GAS_CHECK_FEATURE([explicit relocation support], + gcc_cv_as_alpha_explicit_relocs, [2,12,0],, +[ .set nomacro + .text + extbl $3, $2, $3 !lituse_bytoff!1 + ldq $2, a($29) !literal!1 + ldq $4, b($29) !literal!2 + ldq_u $3, 0($2) !lituse_base!1 + ldq $27, f($29) !literal!5 + jsr $26, ($27), f !lituse_jsr!5 + ldah $29, 0($26) !gpdisp!3 + lda $0, c($29) !gprel + ldah $1, d($29) !gprelhigh + lda $1, d($1) !gprellow + lda $29, 0($29) !gpdisp!3],, + [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1, + [Define if your assembler supports explicit relocations.])]) + gcc_GAS_CHECK_FEATURE([jsrdirect relocation support], + gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],, +[ .set nomacro + .text + ldq $27, a($29) !literal!1 + jsr $26, ($27), a !lituse_jsrdirect!1],, + [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1, + [Define if your assembler supports the lituse_jsrdirect relocation.])]) + ;; + + cris-*-*) + gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option], + gcc_cv_as_cris_no_mul_bug,[2,15,91], + [-no-mul-bug-abort], [.text],, + [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1, + [Define if your assembler supports the -no-mul-bug-abort option.])]) + ;; + + sparc*-*-*) + gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,, + [.register %g2, #scratch],, + [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1, + [Define if your assembler supports .register.])]) + + gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,, + [-relax], [.text],, + [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, + [Define if your assembler supports -relax option.])]) + + gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs], + gcc_cv_as_sparc_gotdata_op,, + [-K PIC], +[.text +foo: + nop +bar: + sethi %gdop_hix22(foo), %g1 + xor %g1, %gdop_lox10(foo), %g1 + ld [[%l7 + %g1]], %g2, %gdop(foo)], + [if test x$gcc_cv_ld != x \ + && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then + if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then + if test x$gcc_cv_objdump != x; then + if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \ + | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then + gcc_cv_as_sparc_gotdata_op=no + else + gcc_cv_as_sparc_gotdata_op=yes + fi + fi + else + gcc_cv_as_sparc_gotdata_op=yes + fi + fi + rm -f conftest], + [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1, + [Define if your assembler and linker support GOTDATA_OP relocs.])]) + + gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs], + gcc_cv_as_sparc_ua_pcrel,, + [-K PIC], +[.text +foo: + nop +.data +.align 4 +.byte 0 +.uaword %r_disp32(foo)], + [if test x$gcc_cv_ld != x \ + && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then + gcc_cv_as_sparc_ua_pcrel=yes + fi + rm -f conftest], + [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1, + [Define if your assembler and linker support unaligned PC relative relocs.]) + + gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols], + gcc_cv_as_sparc_ua_pcrel_hidden,, + [-K PIC], +[.data +.align 4 +.byte 0x31 +.uaword %r_disp32(foo) +.byte 0x32, 0x33, 0x34 +.global foo +.hidden foo +foo: +.skip 4], + [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ + && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \ + && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \ + | grep ' 31000000 07323334' > /dev/null 2>&1; then + if $gcc_cv_objdump -R conftest 2> /dev/null \ + | grep 'DISP32' > /dev/null 2>&1; then + : + else + gcc_cv_as_sparc_ua_pcrel_hidden=yes + fi + fi + rm -f conftest], + [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1, + [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])]) + ]) # unaligned pcrel relocs + + gcc_GAS_CHECK_FEATURE([offsetable %lo()], + gcc_cv_as_sparc_offsetable_lo10,, + [-xarch=v9], +[.text + or %g1, %lo(ab) + 12, %g1 + or %g1, %lo(ab + 12), %g1], + [if test x$gcc_cv_objdump != x \ + && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \ + | grep ' 82106000 82106000' > /dev/null 2>&1; then + gcc_cv_as_sparc_offsetable_lo10=yes + fi], + [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1, + [Define if your assembler supports offsetable %lo().])]) + ;; + +changequote(,)dnl + i[34567]86-*-* | x86_64-*-*) +changequote([,])dnl + case $target_os in + cygwin*) + # Full C++ conformance when using a shared libstdc++-v3 requires some + # support from the Cygwin DLL, which in more recent versions exports + # wrappers to aid in interposing and redirecting operators new, delete, + # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we + # are configuring for a version of Cygwin that exports the wrappers. + if test x$host = x$target; then + AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no]) + else + # Can't check presence of libc functions during cross-compile, so + # we just have to assume we're building for an up-to-date target. + gcc_ac_cygwin_dll_wrappers=yes + fi + AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS, + [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`], + [Define if you want to generate code by default that assumes that the + Cygwin DLL exports wrappers to support libstdc++ function replacement.]) + esac + case $target_os in + cygwin* | pe | mingw32*) + # Recent binutils allows the three-operand form of ".comm" on PE. This + # definition is used unconditionally to initialise the default state of + # the target option variable that governs usage of the feature. + gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align, + [2,19,52],,[.comm foo,1,32]) + AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM, + [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`], + [Define if your assembler supports specifying the alignment + of objects allocated using the GAS .comm command.]) + # Used for DWARF 2 in PE + gcc_GAS_CHECK_FEATURE([.secrel32 relocs], + gcc_cv_as_ix86_pe_secrel32, + [2,15,91],, +[.text +foo: nop +.data + .secrel32 foo], + [if test x$gcc_cv_ld != x \ + && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then + gcc_cv_as_ix86_pe_secrel32=yes + fi + rm -f conftest], + [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1, + [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])]) + # Test if the assembler supports the extended form of the .section + # directive that specifies section alignment. LTO support uses this, + # but normally only after installation, so we warn but don't fail the + # configure if LTO is enabled but the assembler does not support it. + gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align, + [2,20,1],-fatal-warnings,[.section lto_test,"dr0"]) + if test x$gcc_cv_as_section_has_align != xyes; then + case ",$enable_languages," in + *,lto,*) + AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.]) + ;; + esac + fi + ;; + esac + + gcc_GAS_CHECK_FEATURE([filds and fists mnemonics], + gcc_cv_as_ix86_filds,,, + [filds mem; fists mem],, + [AC_DEFINE(HAVE_AS_IX86_FILDS, 1, + [Define if your assembler uses filds and fists mnemonics.])]) + + gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics], + gcc_cv_as_ix86_fildq,,, + [fildq mem; fistpq mem],, + [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1, + [Define if your assembler uses fildq and fistq mnemonics.])]) + + gcc_GAS_CHECK_FEATURE([cmov syntax], + gcc_cv_as_ix86_cmov_sun_syntax,,, + [cmovl.l %edx, %eax],, + [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1, + [Define if your assembler supports the Sun syntax for cmov.])]) + + gcc_GAS_CHECK_FEATURE([ffreep mnemonic], + gcc_cv_as_ix86_ffreep,,, + [ffreep %st(1)],, + [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1, + [Define if your assembler supports the ffreep mnemonic.])]) + + gcc_GAS_CHECK_FEATURE([.quad directive], + gcc_cv_as_ix86_quad,,, + [.quad 0],, + [AC_DEFINE(HAVE_AS_IX86_QUAD, 1, + [Define if your assembler supports the .quad directive.])]) + + gcc_GAS_CHECK_FEATURE([sahf mnemonic], + gcc_cv_as_ix86_sahf,,, + [.code64 + sahf],, + [AC_DEFINE(HAVE_AS_IX86_SAHF, 1, + [Define if your assembler supports the sahf mnemonic in 64bit mode.])]) + + gcc_GAS_CHECK_FEATURE([swap suffix], + gcc_cv_as_ix86_swap,,, + [movl.s %esp, %ebp],, + [AC_DEFINE(HAVE_AS_IX86_SWAP, 1, + [Define if your assembler supports the swap suffix.])]) + + gcc_GAS_CHECK_FEATURE([different section symbol subtraction], + gcc_cv_as_ix86_diff_sect_delta,,, + [.section .rodata +.L1: + .long .L2-.L1 + .long .L3-.L1 + .text +.L3: nop +.L2: nop],, + [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1, + [Define if your assembler supports the subtraction of symbols in different sections.])]) + + # These two are used unconditionally by i386.[ch]; it is to be defined + # to 1 if the feature is present, 0 otherwise. + gcc_GAS_CHECK_FEATURE([GOTOFF in data], + gcc_cv_as_ix86_gotoff_in_data, [2,11,0],, +[ .text +.L0: + nop + .data + .long .L0@GOTOFF]) + AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA, + [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`], + [Define true if the assembler supports '.long foo@GOTOFF'.]) + + gcc_GAS_CHECK_FEATURE([rep and lock prefix], + gcc_cv_as_ix86_rep_lock_prefix,,, + [rep movsl + lock addl %edi, (%eax,%esi) + lock orl $0, (%esp)],, + [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1, + [Define if the assembler supports 'rep <insn>, lock <insn>'.])]) + + ;; + + ia64*-*-*) + gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs], + gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],, +[ .text + addl r15 = @ltoffx(x#), gp + ;; + ld8.mov r16 = [[r15]], x#],, + [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1, + [Define if your assembler supports ltoffx and ldxmov relocations.])]) + + ;; + + powerpc*-*-*) + case $target in + *-*-aix*) conftest_s=' .machine "pwr5" + .csect .text[[PR]] + mfcr 3,128';; + *-*-darwin*) + gcc_GAS_CHECK_FEATURE([.machine directive support], + gcc_cv_as_machine_directive,,, + [ .machine ppc7400]) + if test x$gcc_cv_as_machine_directive != xyes; then + echo "*** This target requires an assembler supporting \".machine\"" >&2 + echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2 + test x$build = x$target && exit 1 + fi + conftest_s=' .text + mfcr r3,128';; + *) conftest_s=' .machine power4 + .text + mfcr 3,128';; + esac + + gcc_GAS_CHECK_FEATURE([mfcr field support], + gcc_cv_as_powerpc_mfcrf, [2,14,0],, + [$conftest_s],, + [AC_DEFINE(HAVE_AS_MFCRF, 1, + [Define if your assembler supports mfcr field.])]) + + case $target in + *-*-aix*) conftest_s=' .machine "pwr5" + .csect .text[[PR]] + popcntb 3,3';; + *) conftest_s=' .machine power5 + .text + popcntb 3,3';; + esac + + gcc_GAS_CHECK_FEATURE([popcntb support], + gcc_cv_as_powerpc_popcntb, [2,17,0],, + [$conftest_s],, + [AC_DEFINE(HAVE_AS_POPCNTB, 1, + [Define if your assembler supports popcntb field.])]) + + case $target in + *-*-aix*) conftest_s=' .machine "pwr5x" + .csect .text[[PR]] + frin 1,1';; + *) conftest_s=' .machine power5 + .text + frin 1,1';; + esac + + gcc_GAS_CHECK_FEATURE([fp round support], + gcc_cv_as_powerpc_fprnd, [2,17,0],, + [$conftest_s],, + [AC_DEFINE(HAVE_AS_FPRND, 1, + [Define if your assembler supports fprnd.])]) + + case $target in + *-*-aix*) conftest_s=' .machine "pwr6" + .csect .text[[PR]] + mffgpr 1,3';; + *) conftest_s=' .machine power6 + .text + mffgpr 1,3';; + esac + + gcc_GAS_CHECK_FEATURE([move fp gpr support], + gcc_cv_as_powerpc_mfpgpr, [2,19,2],, + [$conftest_s],, + [AC_DEFINE(HAVE_AS_MFPGPR, 1, + [Define if your assembler supports mffgpr and mftgpr.])]) + + case $target in + *-*-aix*) conftest_s=' .csect .text[[PR]] +LCF..0: + addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';; + *-*-darwin*) + conftest_s=' .text +LCF0: + addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';; + *) conftest_s=' .text +.LCF0: + addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';; + esac + + gcc_GAS_CHECK_FEATURE([rel16 relocs], + gcc_cv_as_powerpc_rel16, [2,17,0], -a32, + [$conftest_s],, + [AC_DEFINE(HAVE_AS_REL16, 1, + [Define if your assembler supports R_PPC_REL16 relocs.])]) + + case $target in + *-*-aix*) conftest_s=' .machine "pwr6" + .csect .text[[PR]] + cmpb 3,4,5';; + *) conftest_s=' .machine power6 + .text + cmpb 3,4,5';; + esac + + gcc_GAS_CHECK_FEATURE([compare bytes support], + gcc_cv_as_powerpc_cmpb, [2,19,2], -a32, + [$conftest_s],, + [AC_DEFINE(HAVE_AS_CMPB, 1, + [Define if your assembler supports cmpb.])]) + + case $target in + *-*-aix*) conftest_s=' .machine "pwr6" + .csect .text[[PR]] + dadd 1,2,3';; + *) conftest_s=' .machine power6 + .text + dadd 1,2,3';; + esac + + gcc_GAS_CHECK_FEATURE([decimal float support], + gcc_cv_as_powerpc_dfp, [2,19,2], -a32, + [$conftest_s],, + [AC_DEFINE(HAVE_AS_DFP, 1, + [Define if your assembler supports DFP instructions.])]) + + case $target in + *-*-aix*) conftest_s=' .machine "pwr7" + .csect .text[[PR]] + lxvd2x 1,2,3';; + *) conftest_s=' .machine power7 + .text + lxvd2x 1,2,3';; + esac + + gcc_GAS_CHECK_FEATURE([vector-scalar support], + gcc_cv_as_powerpc_vsx, [2,19,2], -a32, + [$conftest_s],, + [AC_DEFINE(HAVE_AS_VSX, 1, + [Define if your assembler supports VSX instructions.])]) + + case $target in + *-*-aix*) conftest_s=' .machine "pwr7" + .csect .text[[PR]] + popcntd 3,3';; + *) conftest_s=' .machine power7 + .text + popcntd 3,3';; + esac + + gcc_GAS_CHECK_FEATURE([popcntd support], + gcc_cv_as_powerpc_popcntd, [2,19,2], -a32, + [$conftest_s],, + [AC_DEFINE(HAVE_AS_POPCNTD, 1, + [Define if your assembler supports POPCNTD instructions.])]) + + case $target in + *-*-aix*) conftest_s=' .csect .text[[PR]] + lwsync';; + *) conftest_s=' .text + lwsync';; + esac + + gcc_GAS_CHECK_FEATURE([lwsync support], + gcc_cv_as_powerpc_lwsync, [2,19,2], -a32, + [$conftest_s],, + [AC_DEFINE(HAVE_AS_LWSYNC, 1, + [Define if your assembler supports LWSYNC instructions.])]) + + case $target in + *-*-aix*) conftest_s=' .machine "476" + .csect .text[[PR]] + dci 0';; + *) conftest_s=' .machine "476" + .text + dci 0';; + esac + + gcc_GAS_CHECK_FEATURE([data cache invalidate support], + gcc_cv_as_powerpc_dci, [9,99,0], -a32, + [$conftest_s],, + [AC_DEFINE(HAVE_AS_DCI, 1, + [Define if your assembler supports the DCI/ICI instructions.])]) + + gcc_GAS_CHECK_FEATURE([.gnu_attribute support], + gcc_cv_as_powerpc_gnu_attribute, [2,18,0],, + [.gnu_attribute 4,1],, + [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, + [Define if your assembler supports .gnu_attribute.])]) + + gcc_GAS_CHECK_FEATURE([tls marker support], + gcc_cv_as_powerpc_tls_markers, [2,20,0],, + [ bl __tls_get_addr(x@tlsgd)],, + [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1, + [Define if your assembler supports arg info for __tls_get_addr.])]) + + case $target in + *-*-aix*) + gcc_GAS_CHECK_FEATURE([.ref support], + gcc_cv_as_aix_ref, [2.21.0],, + [ .csect stuff[[rw]] + stuff: + .long 1 + .extern sym + .ref sym + ],, + [AC_DEFINE(HAVE_AS_REF, 1, + [Define if your assembler supports .ref])]) + ;; + esac + ;; + + mips*-*-*) + gcc_GAS_CHECK_FEATURE([explicit relocation support], + gcc_cv_as_mips_explicit_relocs, [2,14,0],, +[ lw $4,%gp_rel(foo)($4)],, + [if test x$target_cpu_default = x + then target_cpu_default=MASK_EXPLICIT_RELOCS + else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS" + fi]) + gcc_GAS_CHECK_FEATURE([-mno-shared support], + gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],, + [AC_DEFINE(HAVE_AS_NO_SHARED, 1, + [Define if the assembler understands -mno-shared.])]) + + gcc_GAS_CHECK_FEATURE([.gnu_attribute support], + gcc_cv_as_mips_gnu_attribute, [2,18,0],, + [.gnu_attribute 4,1],, + [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, + [Define if your assembler supports .gnu_attribute.])]) + + gcc_GAS_CHECK_FEATURE([.dtprelword support], + gcc_cv_as_mips_dtprelword, [2,18,0],, + [.section .tdata,"awT",@progbits +x: + .word 2 + .text + .dtprelword x+0x8000],, + [AC_DEFINE(HAVE_AS_DTPRELWORD, 1, + [Define if your assembler supports .dtprelword.])]) + + gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support], + gcc_cv_as_mips_dspr1_mult,,, +[ .set mips32r2 + .set nodspr2 + .set dsp + madd $ac3,$4,$5 + maddu $ac3,$4,$5 + msub $ac3,$4,$5 + msubu $ac3,$4,$5 + mult $ac3,$4,$5 + multu $ac3,$4,$5],, + [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1, + [Define if your assembler supports DSPR1 mult.])]) + + AC_MSG_CHECKING(assembler and linker for explicit JALR relocation) + gcc_cv_as_ld_jalr_reloc=no + if test $gcc_cv_as_mips_explicit_relocs = yes; then + if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_as_ld_jalr_reloc=yes + fi + elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then + echo ' .ent x' > conftest.s + echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s + echo ' ld $25,%call16(y)($28)' >> conftest.s + echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s + echo '1: jalr $25' >> conftest.s + echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s + echo '1: jalr $25' >> conftest.s + echo ' .end x' >> conftest.s + if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \ + && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then + if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \ + && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then + gcc_cv_as_ld_jalr_reloc=yes + fi + fi + rm -f conftest.* + fi + fi + if test $gcc_cv_as_ld_jalr_reloc = yes; then + if test x$target_cpu_default = x; then + target_cpu_default=MASK_RELAX_PIC_CALLS + else + target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS" + fi + fi + AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc) + + AC_CACHE_CHECK([linker for .eh_frame personality relaxation], + [gcc_cv_ld_mips_personality_relaxation], + [gcc_cv_ld_mips_personality_relaxation=no + if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 \ + -a "$gcc_cv_gld_minor_version" -ge 21 \ + -o "$gcc_cv_gld_major_version" -gt 2; then + gcc_cv_ld_mips_personality_relaxation=yes + fi + elif test x$gcc_cv_as != x \ + -a x$gcc_cv_ld != x \ + -a x$gcc_cv_readelf != x ; then + cat > conftest.s <<EOF + .cfi_startproc + .cfi_personality 0x80,indirect_ptr + .ent test +test: + nop + .end test + .cfi_endproc + + .section .data,"aw",@progbits +indirect_ptr: + .dc.a personality +EOF + if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \ + && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then + if $gcc_cv_readelf -d conftest 2>&1 \ + | grep TEXTREL > /dev/null 2>&1; then + : + elif $gcc_cv_readelf --relocs conftest 2>&1 \ + | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then + : + else + gcc_cv_ld_mips_personality_relaxation=yes + fi + fi + fi + rm -f conftest.s conftest.o conftest]) + if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then + AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1, + [Define if your linker can relax absolute .eh_frame personality +pointers into PC-relative form.]) + fi + ;; +esac + +# Mips and HP-UX need the GNU assembler. +# Linux on IA64 might be able to use the Intel assembler. + +case "$target" in + mips*-*-* | *-*-hpux* ) + if test x$gas_flag = xyes \ + || test x"$host" != x"$build" \ + || test ! -x "$gcc_cv_as" \ + || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then + : + else + echo "*** This configuration requires the GNU assembler" >&2 + exit 1 + fi + ;; +esac + +# ??? Not all targets support dwarf2 debug_line, even within a version +# of gas. Moreover, we need to emit a valid instruction to trigger any +# info to the output file. So, as supported targets are added to gas 2.11, +# add some instruction here to (also) show we expect this might work. +# ??? Once 2.11 is released, probably need to add first known working +# version to the per-target configury. +case "$cpu_type" in + alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \ + | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa) + insn="nop" + ;; + ia64 | s390) + insn="nop 0" + ;; + mmix) + insn="swym 0" + ;; +esac +if test x"$insn" != x; then + conftest_s="\ + .file 1 \"conftest.s\" + .loc 1 3 0 + $insn" + gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support], + gcc_cv_as_dwarf2_debug_line, + [elf,2,11,0],, [$conftest_s], + [if test x$gcc_cv_objdump != x \ + && $gcc_cv_objdump -h conftest.o 2> /dev/null \ + | grep debug_line > /dev/null 2>&1; then + gcc_cv_as_dwarf2_debug_line=yes + fi]) + +# The .debug_line file table must be in the exact order that +# we specified the files, since these indices are also used +# by DW_AT_decl_file. Approximate this test by testing if +# the assembler bitches if the same index is assigned twice. + gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive], + gcc_cv_as_dwarf2_file_buggy,,, +[ .file 1 "foo.s" + .file 1 "bar.s"]) + + if test $gcc_cv_as_dwarf2_debug_line = yes \ + && test $gcc_cv_as_dwarf2_file_buggy = no; then + AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1, + [Define if your assembler supports dwarf2 .file/.loc directives, + and preserves file table indices exactly as given.]) + fi + + gcc_GAS_CHECK_FEATURE([--gdwarf2 option], + gcc_cv_as_gdwarf2_flag, + [elf,2,11,0], [--gdwarf2], [$insn],, + [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1, +[Define if your assembler supports the --gdwarf2 option.])]) + + gcc_GAS_CHECK_FEATURE([--gstabs option], + gcc_cv_as_gstabs_flag, + [elf,2,11,0], [--gstabs], [$insn], + [# The native Solaris 9/Intel assembler doesn't understand --gstabs + # and warns about it, but still exits successfully. So check for + # this. + if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null]) + then : + else gcc_cv_as_gstabs_flag=yes + fi], + [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1, +[Define if your assembler supports the --gstabs option.])]) + + gcc_GAS_CHECK_FEATURE([--debug-prefix-map option], + gcc_cv_as_debug_prefix_map_flag, + [2,18,0], [--debug-prefix-map /a=/b], [$insn],, + [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1, +[Define if your assembler supports the --debug-prefix-map option.])]) +fi + +gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment, + ,, +[.lcomm bar,4,16],, +[AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1, + [Define if your assembler supports .lcomm with an alignment field.])]) + +AC_ARG_ENABLE(gnu-unique-object, + [AS_HELP_STRING([--enable-gnu-unique-object], + [enable the use of the @gnu_unique_object ELF extension on glibc systems])], + [case $enable_gnu_unique_object in + yes | no) ;; + *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object. +Valid choices are 'yes' and 'no'.]) ;; + esac], + [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object, + [elf,2,19,52],, + [.type foo, @gnu_unique_object],, +# Also check for ld.so support, i.e. glibc 2.11 or higher. + [[if test x$host = x$build -a x$host = x$target && + ldd --version 2>/dev/null && + glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then + glibcmajor=`expr "$glibcver" : "\([0-9]*\)"` + glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"` + glibcnum=`expr $glibcmajor \* 1000 + $glibcminor` + if test "$glibcnum" -ge 2011 ; then + enable_gnu_unique_object=yes + fi + fi]])]) +if test x$enable_gnu_unique_object = xyes; then + AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1, + [Define if your assembler supports @gnu_unique_object.]) +fi + +AC_CACHE_CHECK([assembler for tolerance to line number 0], + [gcc_cv_as_line_zero], + [gcc_cv_as_line_zero=no + if test $in_tree_gas = yes; then + gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes]) + elif test "x$gcc_cv_as" != x; then + { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s + if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) && + test "x`cat conftest.out`" = x + then + gcc_cv_as_line_zero=yes + else + echo "configure: failed program was" >&AS_MESSAGE_LOG_FD + cat conftest.s >&AS_MESSAGE_LOG_FD + echo "configure: error output was" >&AS_MESSAGE_LOG_FD + cat conftest.out >&AS_MESSAGE_LOG_FD + fi + rm -f conftest.o conftest.s conftest.out + fi]) +if test "x$gcc_cv_as_line_zero" = xyes; then + AC_DEFINE([HAVE_AS_LINE_ZERO], 1, +[Define if the assembler won't complain about a line such as # 0 "" 2.]) +fi + +AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support) +gcc_cv_ld_eh_frame_hdr=no +if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_ld_eh_frame_hdr=yes + fi +elif test x$gcc_cv_ld != x; then + if echo "$ld_ver" | grep GNU > /dev/null; then + # Check if linker supports --eh-frame-hdr option + if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then + gcc_cv_ld_eh_frame_hdr=yes + fi + else + case "$target" in + *-*-solaris2*) + # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251. + if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then + gcc_cv_ld_eh_frame_hdr=yes + fi + ;; + esac + fi +fi +GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR]) +if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then + AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1, +[Define if your linker supports .eh_frame_hdr.]) +fi +AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr) + +AC_MSG_CHECKING(linker position independent executable support) +gcc_cv_ld_pie=no +if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_ld_pie=yes + fi +elif test x$gcc_cv_ld != x; then + # Check if linker supports -pie option + if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then + gcc_cv_ld_pie=yes + fi +fi +if test x"$gcc_cv_ld_pie" = xyes; then + AC_DEFINE(HAVE_LD_PIE, 1, +[Define if your linker supports -pie option.]) +fi +AC_MSG_RESULT($gcc_cv_ld_pie) + +AC_MSG_CHECKING(linker EH-compatible garbage collection of sections) +gcc_cv_ld_eh_gc_sections=no +if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_ld_eh_gc_sections=yes + fi +elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then + cat > conftest.s <<EOF + .section .text +.globl _start + .type _start, @function +_start: + .long foo + .size _start, .-_start + .section .text.foo,"ax",@progbits + .type foo, @function +foo: + .long 0 + .size foo, .-foo + .section .gcc_except_table.foo,"a",@progbits +.L0: + .long 0 + .section .eh_frame,"a",@progbits + .long .L0 +EOF + if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then + if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ + | grep "gc-sections option ignored" > /dev/null; then + gcc_cv_ld_eh_gc_sections=no + elif $gcc_cv_objdump -h conftest 2> /dev/null \ + | grep gcc_except_table > /dev/null; then + gcc_cv_ld_eh_gc_sections=yes + # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections. + if test x$gcc_cv_as_comdat_group != xyes; then + gcc_cv_ld_eh_gc_sections=no + cat > conftest.s <<EOF + .section .text +.globl _start + .type _start, @function +_start: + .long foo + .size _start, .-_start + .section .gnu.linkonce.t.foo,"ax",@progbits + .type foo, @function +foo: + .long 0 + .size foo, .-foo + .section .gcc_except_table.foo,"a",@progbits +.L0: + .long 0 + .section .eh_frame,"a",@progbits + .long .L0 +EOF + if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then + if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ + | grep "gc-sections option ignored" > /dev/null; then + gcc_cv_ld_eh_gc_sections=no + elif $gcc_cv_objdump -h conftest 2> /dev/null \ + | grep gcc_except_table > /dev/null; then + gcc_cv_ld_eh_gc_sections=yes + fi + fi + fi + fi + fi + rm -f conftest.s conftest.o conftest +fi +case "$target" in + hppa*-*-linux*) + # ??? This apparently exposes a binutils bug with PC-relative relocations. + gcc_cv_ld_eh_gc_sections=no + ;; +esac +if test x$gcc_cv_ld_eh_gc_sections = xyes; then + AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1, + [Define if your linker supports garbage collection of + sections in presence of EH frames.]) +fi +AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections) + +AC_MSG_CHECKING(linker EH garbage collection of sections bug) +gcc_cv_ld_eh_gc_sections_bug=no +if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_ld_eh_gc_sections_bug=yes + fi +elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x -a x$gcc_cv_as_comdat_group = xyes; then + gcc_cv_ld_eh_gc_sections_bug=yes + cat > conftest.s <<EOF + .section .text +.globl _start + .type _start, @function +_start: + .long foo + .size _start, .-_start + .section .text.startup.foo,"ax",@progbits + .type foo, @function +foo: + .long 0 + .size foo, .-foo + .section .gcc_except_table.foo,"a",@progbits +.L0: + .long 0 + .section .eh_frame,"a",@progbits + .long .L0 +EOF + if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then + if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ + | grep "gc-sections option ignored" > /dev/null; then + : + elif $gcc_cv_objdump -h conftest 2> /dev/null \ + | grep gcc_except_table > /dev/null; then + gcc_cv_ld_eh_gc_sections_bug=no + fi + fi + rm -f conftest.s conftest.o conftest +fi +if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then + AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1, + [Define if your linker has buggy garbage collection of + sections support when .text.startup.foo like sections are used.]) +fi +AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug) + +# -------- +# UNSORTED +# -------- + +AC_CACHE_CHECK(linker --as-needed support, +gcc_cv_ld_as_needed, +[gcc_cv_ld_as_needed=no +if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_ld_as_needed=yes + fi +elif test x$gcc_cv_ld != x; then + # Check if linker supports --as-needed and --no-as-needed options + if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then + gcc_cv_ld_as_needed=yes + fi +fi +]) +if test x"$gcc_cv_ld_as_needed" = xyes; then + AC_DEFINE(HAVE_LD_AS_NEEDED, 1, +[Define if your linker supports --as-needed and --no-as-needed options.]) +fi + +case "$target:$tm_file" in + powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*) + AC_CACHE_CHECK(linker support for omitting dot symbols, + gcc_cv_ld_no_dot_syms, + [gcc_cv_ld_no_dot_syms=no + if test x"$ld_is_gold" = xyes; then + gcc_cv_ld_no_dot_syms=yes + elif test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then + gcc_cv_ld_no_dot_syms=yes + fi + elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then + cat > conftest1.s <<EOF + .text + bl .foo +EOF + cat > conftest2.s <<EOF + .section ".opd","aw" + .align 3 + .globl foo + .type foo,@function +foo: + .quad .LEfoo,.TOC.@tocbase,0 + .text +.LEfoo: + blr + .size foo,.-.LEfoo +EOF + if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \ + && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \ + && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then + gcc_cv_ld_no_dot_syms=yes + fi + rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s + fi + ]) + if test x"$gcc_cv_ld_no_dot_syms" = xyes; then + AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1, + [Define if your PowerPC64 linker only needs function descriptor syms.]) + fi + + AC_CACHE_CHECK(linker large toc support, + gcc_cv_ld_large_toc, + [gcc_cv_ld_large_toc=no + if test x"$ld_is_gold" = xyes; then + gcc_cv_ld_large_toc=yes + elif test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then + gcc_cv_ld_large_toc=yes + fi + elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then + cat > conftest.s <<EOF + .section ".tbss","awT",@nobits + .align 3 +ie0: .space 8 + .global _start + .text +_start: + addis 9,13,ie0@got@tprel@ha + ld 9,ie0@got@tprel@l(9) +EOF + if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \ + && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then + gcc_cv_ld_large_toc=yes + fi + rm -f conftest conftest.o conftest.s + fi + ]) + if test x"$gcc_cv_ld_large_toc" = xyes; then + AC_DEFINE(HAVE_LD_LARGE_TOC, 1, + [Define if your PowerPC64 linker supports a large TOC.]) + fi + ;; +esac + +AC_CACHE_CHECK(linker --build-id support, + gcc_cv_ld_buildid, + [gcc_cv_ld_buildid=no + if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a \ + "$gcc_cv_gld_minor_version" -ge 18 -o \ + "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_ld_buildid=yes + fi + elif test x$gcc_cv_ld != x; then + if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then + gcc_cv_ld_buildid=yes + fi + fi]) +if test x"$gcc_cv_ld_buildid" = xyes; then + AC_DEFINE(HAVE_LD_BUILDID, 1, + [Define if your linker supports --build-id.]) +fi + +AC_ARG_ENABLE(linker-build-id, +[ --enable-linker-build-id + compiler will always pass --build-id to linker], +[], +enable_linker_build_id=no) + +if test x"$enable_linker_build_id" = xyes; then + if test x"$gcc_cv_ld_buildid" = xyes; then + AC_DEFINE(ENABLE_LD_BUILDID, 1, + [Define if gcc should always pass --build-id to linker.]) + else + AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored) + fi +fi + +# In binutils 2.21, GNU ld gained support for new emulations fully +# supporting the Solaris 2 ABI. Detect their presence in the linker used. +AC_CACHE_CHECK(linker *_sol2 emulation support, + gcc_cv_ld_sol2_emulation, + [gcc_cv_ld_sol2_emulation=no + if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a \ + "$gcc_cv_gld_minor_version" -ge 21 -o \ + "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_ld_sol2_emulation=yes + fi + elif test x$gcc_cv_ld != x; then + if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \ + grep _sol2 > /dev/null; then + gcc_cv_ld_sol2_emulation=yes + fi + fi]) +if test x"$gcc_cv_ld_sol2_emulation" = xyes; then + AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1, + [Define if your linker supports the *_sol2 emulations.]) +fi + +AC_CACHE_CHECK(linker --sysroot support, + gcc_cv_ld_sysroot, + [gcc_cv_ld_sysroot=no + if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then + gcc_cv_ld_sysroot=yes + fi + elif test x$gcc_cv_ld != x; then + if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then + gcc_cv_ld_sysroot=yes + fi + fi]) +if test x"$gcc_cv_ld_sysroot" = xyes; then + AC_DEFINE(HAVE_LD_SYSROOT, 1, + [Define if your linker supports --sysroot.]) +fi + +if test x$with_sysroot = x && test x$host = x$target \ + && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \ + && test "$prefix" != "NONE"; then + AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include", +[Define to PREFIX/include if cpp should also search that directory.]) +fi + +if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then + if test "x$with_headers" != x; then + target_header_dir=$with_headers + elif test "x$with_sysroot" = x; then + target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include" + elif test "x$with_build_sysroot" != "x"; then + target_header_dir="${with_build_sysroot}/usr/include" + elif test "x$with_sysroot" = xyes; then + target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include" + else + target_header_dir="${with_sysroot}/usr/include" + fi +else + target_header_dir=/usr/include +fi + +# Test for stack protector support in target C library. +AC_CACHE_CHECK(__stack_chk_fail in target C library, + gcc_cv_libc_provides_ssp, + [gcc_cv_libc_provides_ssp=no + case "$target" in + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu) + [# glibc 2.4 and later provides __stack_chk_fail and + # either __stack_chk_guard, or TLS access to stack guard canary. + if test -f $target_header_dir/features.h \ + && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \ + $target_header_dir/features.h > /dev/null; then + if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \ + $target_header_dir/features.h > /dev/null; then + gcc_cv_libc_provides_ssp=yes + elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \ + $target_header_dir/features.h > /dev/null \ + && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \ + $target_header_dir/features.h > /dev/null; then + gcc_cv_libc_provides_ssp=yes + elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \ + $target_header_dir/features.h > /dev/null && \ + test -f $target_header_dir/bits/uClibc_config.h && \ + $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \ + $target_header_dir/bits/uClibc_config.h > /dev/null; then + gcc_cv_libc_provides_ssp=yes + fi + fi] + ;; + *-*-gnu*) + # Avoid complicated tests (see + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now + # simply assert that glibc does provide this, which is true for all + # realistically usable GNU/Hurd configurations. + gcc_cv_libc_provides_ssp=yes;; + *-*-darwin* | *-*-freebsd*) + AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes], + [echo "no __stack_chk_fail on this target"]) + ;; + *) gcc_cv_libc_provides_ssp=no ;; + esac]) + +if test x$gcc_cv_libc_provides_ssp = xyes; then + AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1, + [Define if your target C library provides stack protector support]) +fi + +# Check if TFmode long double should be used by default or not. +# Some glibc targets used DFmode long double, but with glibc 2.4 +# and later they can use TFmode. +case "$target" in + powerpc*-*-linux* | \ + powerpc*-*-gnu* | \ + sparc*-*-linux* | \ + s390*-*-linux* | \ + alpha*-*-linux*) + AC_ARG_WITH(long-double-128, +[ --with-long-double-128 Use 128-bit long double by default.], + gcc_cv_target_ldbl128="$with_long_double_128", + [[gcc_cv_target_ldbl128=no + grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \ + $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \ + && gcc_cv_target_ldbl128=yes + ]]) + ;; +esac +if test x$gcc_cv_target_ldbl128 = xyes; then + AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1, + [Define if TFmode long double should be the default]) +fi + +AC_MSG_CHECKING(dl_iterate_phdr in target C library) +gcc_cv_target_dl_iterate_phdr=unknown +case "$target" in + *-*-solaris2*) + # <link.h> needs both a dl_iterate_phdr declaration and support for + # compilation with largefile support. + if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \ + && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then + gcc_cv_target_dl_iterate_phdr=yes + else + gcc_cv_target_dl_iterate_phdr=no + fi + ;; +esac +GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR]) +if test x$gcc_cv_target_dl_iterate_phdr = xyes; then + AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1, +[Define if your target C library provides the `dl_iterate_phdr' function.]) +fi +AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr) + +# Find out what GC implementation we want, or may, use. +AC_ARG_WITH(gc, +[ --with-gc={page,zone} choose the garbage collection mechanism to use + with the compiler], +[case "$withval" in + page) + GGC=ggc-$withval + ;; + zone) + GGC=ggc-$withval + AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use]) + ;; + *) + AC_MSG_ERROR([$withval is an invalid option to --with-gc]) + ;; +esac], +[GGC=ggc-page]) +AC_SUBST(GGC) +echo "Using $GGC for garbage collection." + +# Libraries to use on the host. This will normally be set by the top +# level Makefile. Here we simply capture the value for our Makefile. +if test -z "${HOST_LIBS+set}"; then + HOST_LIBS= +fi +AC_SUBST(HOST_LIBS) + +# Use the system's zlib library. +zlibdir=-L../zlib +zlibinc="-I\$(srcdir)/../zlib" +AC_ARG_WITH(system-zlib, +[ --with-system-zlib use installed libz], +zlibdir= +zlibinc= +) +AC_SUBST(zlibdir) +AC_SUBST(zlibinc) + +dnl Very limited version of automake's enable-maintainer-mode + +AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles]) + dnl maintainer-mode is disabled by default + AC_ARG_ENABLE(maintainer-mode, +[ --enable-maintainer-mode + enable make rules and dependencies not useful + (and sometimes confusing) to the casual installer], + maintainer_mode=$enableval, + maintainer_mode=no) + +AC_MSG_RESULT($maintainer_mode) + +if test "$maintainer_mode" = "yes"; then + MAINT='' +else + MAINT='#' +fi +AC_SUBST(MAINT)dnl + +# -------------- +# Language hooks +# -------------- + +# Make empty files to contain the specs and options for each language. +# Then add #include lines to for a compiler that has specs and/or options. + +subdirs= +lang_opt_files= +lang_specs_files= +lang_tree_files= +# These (without "all_") are set in each config-lang.in. +# `language' must be a single word so is spelled singularly. +all_languages= +all_compilers= +all_outputs='Makefile' +# List of language makefile fragments. +all_lang_makefrags= +# Additional files for gengtype +all_gtfiles="$target_gtfiles" + +# These are the languages that are set in --enable-languages, +# and are available in the GCC tree. +all_selected_languages= + +# Add the language fragments. +# Languages are added via two mechanisms. Some information must be +# recorded in makefile variables, these are defined in config-lang.in. +# We accumulate them and plug them into the main Makefile. +# The other mechanism is a set of hooks for each of the main targets +# like `clean', `install', etc. + +language_hooks="Make-hooks" + +for lang in ${srcdir}/*/config-lang.in +do +changequote(,)dnl + test "$lang" = "${srcdir}/*/config-lang.in" && continue + + lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang` + if test "x$lang_alias" = x + then + echo "$lang doesn't set \$language." 1>&2 + exit 1 + fi + subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" + subdirs="$subdirs $subdir" + + # $gcc_subdir is where the gcc integration files are to be found + # for a language, both for internal compiler purposes (compiler + # sources implementing front-end to GCC tree converters), and for + # build infrastructure purposes (Make-lang.in, etc.) + # + # This will be <subdir> (relative to $srcdir) if a line like + # gcc_subdir="<subdir>" or gcc_subdir=<subdir> + # is found in <langdir>/config-lang.in, and will remain <langdir> + # otherwise. + # + # Except for the language alias (fetched above), the regular + # "config-lang.in" contents are always retrieved from $gcc_subdir, + # so a <langdir>/config-lang.in setting gcc_subdir typically sets + # only this and the language alias. + + gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang` + if [ "$gcc_subdir" = "" ]; then + gcc_subdir="$subdir" + fi + + case ",$enable_languages," in + *,$lang_alias,*) + all_selected_languages="$all_selected_languages $lang_alias" + if test -f $srcdir/$gcc_subdir/lang-specs.h; then + lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h" + fi + ;; + esac +changequote([,])dnl + + language= + boot_language= + compilers= + outputs= + gtfiles= + subdir_requires= + . ${srcdir}/$gcc_subdir/config-lang.in + if test "x$language" = x + then + echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2 + exit 1 + fi + + ok=: + case ",$enable_languages," in + *,$lang_alias,*) ;; + *) + for i in $subdir_requires; do + test -f "${srcdir}/$i/config-lang.in" && continue + ok=false + break + done + ;; + esac + $ok || continue + + all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in" + if test -f $srcdir/$gcc_subdir/lang.opt; then + lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt" + all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt" + fi + if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then + lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def" + fi + all_languages="$all_languages $language" + all_compilers="$all_compilers $compilers" + all_outputs="$all_outputs $outputs" + all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles" + case ",$enable_languages," in + *,lto,*) + AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.]) + enable_lto=yes + AC_SUBST(enable_lto) + ;; + *) ;; + esac +done + +# Pick up gtfiles for c +gtfiles= +. ${srcdir}/c-config-lang.in +all_gtfiles="$all_gtfiles [[c]] $gtfiles" + +check_languages= +for language in $all_selected_languages +do + check_languages="$check_languages check-$language" +done + +# We link each language in with a set of hooks, reached indirectly via +# lang.${target}. Only do so for selected languages. + +rm -f Make-hooks +touch Make-hooks +target_list="all.cross start.encap rest.encap tags \ + install-common install-man install-info install-pdf install-html dvi \ + pdf html uninstall info man srcextra srcman srcinfo \ + mostlyclean clean distclean maintainer-clean install-plugin" + +for t in $target_list +do + x= + for lang in $all_selected_languages + do + x="$x $lang.$t" + done + echo "lang.$t: $x" >> Make-hooks +done + +# -------- +# Option include files +# -------- + +${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk +option_includes="option-includes.mk" +AC_SUBST_FILE(option_includes) + +# -------- +# UNSORTED +# -------- + +# Create .gdbinit. + +echo "dir ." > .gdbinit +echo "dir ${srcdir}" >> .gdbinit +if test x$gdb_needs_out_file_path = xyes +then + echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit +fi +if test "x$subdirs" != x; then + for s in $subdirs + do + echo "dir ${srcdir}/$s" >> .gdbinit + done +fi +echo "source ${srcdir}/gdbinit.in" >> .gdbinit + +gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)' +AC_SUBST(gcc_tooldir) +AC_SUBST(dollar) + +# Find a directory in which to install a shared libgcc. + +AC_ARG_ENABLE(version-specific-runtime-libs, +[ --enable-version-specific-runtime-libs + specify that runtime libraries should be + installed in a compiler-specific directory]) + +AC_ARG_WITH(slibdir, +[ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]], +slibdir="$with_slibdir", +if test "${enable_version_specific_runtime_libs+set}" = set; then + slibdir='$(libsubdir)' +elif test "$host" != "$target"; then + slibdir='$(build_tooldir)/lib' +else + slibdir='$(libdir)' +fi) +AC_SUBST(slibdir) + +# Substitute configuration variables +AC_SUBST(subdirs) +AC_SUBST(srcdir) +AC_SUBST(all_compilers) +AC_SUBST(all_gtfiles) +AC_SUBST(all_lang_makefrags) +AC_SUBST(all_languages) +AC_SUBST(all_selected_languages) +AC_SUBST(build_exeext) +AC_SUBST(build_install_headers_dir) +AC_SUBST(build_xm_file_list) +AC_SUBST(build_xm_include_list) +AC_SUBST(build_xm_defines) +AC_SUBST(build_file_translate) +AC_SUBST(check_languages) +AC_SUBST(cpp_install_dir) +AC_SUBST(xmake_file) +AC_SUBST(tmake_file) +AC_SUBST(TM_ENDIAN_CONFIG) +AC_SUBST(TM_MULTILIB_CONFIG) +AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG) +AC_SUBST(extra_gcc_objs) +AC_SUBST(user_headers_inc_next_pre) +AC_SUBST(user_headers_inc_next_post) +AC_SUBST(extra_headers_list) +AC_SUBST(extra_objs) +AC_SUBST(extra_parts) +AC_SUBST(extra_passes) +AC_SUBST(extra_programs) +AC_SUBST(float_h_file) +AC_SUBST(gcc_config_arguments) +AC_SUBST(gcc_gxx_include_dir) +AC_SUBST(host_exeext) +AC_SUBST(host_xm_file_list) +AC_SUBST(host_xm_include_list) +AC_SUBST(host_xm_defines) +AC_SUBST(out_host_hook_obj) +AC_SUBST(install) +AC_SUBST(lang_opt_files) +AC_SUBST(lang_specs_files) +AC_SUBST(lang_tree_files) +AC_SUBST(local_prefix) +AC_SUBST(md_file) +AC_SUBST(objc_boehm_gc) +AC_SUBST(out_file) +AC_SUBST(out_object_file) +AC_SUBST(thread_file) +AC_SUBST(tm_file_list) +AC_SUBST(tm_include_list) +AC_SUBST(tm_defines) +AC_SUBST(tm_p_file_list) +AC_SUBST(tm_p_include_list) +AC_SUBST(xm_file_list) +AC_SUBST(xm_include_list) +AC_SUBST(xm_defines) +AC_SUBST(use_gcc_stdint) +AC_SUBST(c_target_objs) +AC_SUBST(cxx_target_objs) +AC_SUBST(fortran_target_objs) +AC_SUBST(target_cpu_default) + +AC_SUBST_FILE(language_hooks) + +# Echo link setup. +if test x${build} = x${host} ; then + if test x${host} = x${target} ; then + echo "Links are now set up to build a native compiler for ${target}." 1>&2 + else + echo "Links are now set up to build a cross-compiler" 1>&2 + echo " from ${host} to ${target}." 1>&2 + fi +else + if test x${host} = x${target} ; then + echo "Links are now set up to build (on ${build}) a native compiler" 1>&2 + echo " for ${target}." 1>&2 + else + echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2 + echo " from ${host} to ${target}." 1>&2 + fi +fi + +AC_ARG_VAR(GMPLIBS,[How to link GMP]) +AC_ARG_VAR(GMPINC,[How to find GMP include files]) + +AC_ARG_VAR(PPLLIBS,[How to link PPL]) +AC_ARG_VAR(PPLINC,[How to find PPL include files]) + +AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG]) +AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files]) +if test "x${CLOOGLIBS}" != "x" ; then + AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.]) +fi + +# Check for plugin support +AC_ARG_ENABLE(plugin, +[ --enable-plugin enable plugin support], +enable_plugin=$enableval, +enable_plugin=yes; default_plugin=yes) + +pluginlibs= + +case "${host}" in + *-*-darwin*) + if test x$build = x$host; then + export_sym_check="nm${exeext} -g" + elif test x$host = x$target; then + export_sym_check="$gcc_cv_nm -g" + else + export_sym_check= + fi + ;; + *) + if test x$build = x$host; then + export_sym_check="objdump${exeext} -T" + elif test x$host = x$target; then + export_sym_check="$gcc_cv_objdump -T" + else + export_sym_check= + fi + ;; +esac + +if test x"$enable_plugin" = x"yes"; then + + AC_MSG_CHECKING([for exported symbols]) + if test "x$export_sym_check" != x; then + echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c + ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1 + if $export_sym_check conftest | grep foobar > /dev/null; then + : # No need to use a flag + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([yes]) + AC_MSG_CHECKING([for -rdynamic]) + ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1 + if $export_sym_check conftest | grep foobar > /dev/null; then + plugin_rdynamic=yes + pluginlibs="-rdynamic" + else + plugin_rdynamic=no + enable_plugin=no + fi + AC_MSG_RESULT([$plugin_rdynamic]) + fi + else + AC_MSG_RESULT([unable to check]) + fi + + # Check -ldl + saved_LIBS="$LIBS" + AC_SEARCH_LIBS([dlopen], [dl]) + if test x"$ac_cv_search_dlopen" = x"-ldl"; then + pluginlibs="$pluginlibs -ldl" + fi + LIBS="$saved_LIBS" + + # Check that we can build shared objects with -fPIC -shared + saved_LDFLAGS="$LDFLAGS" + saved_CFLAGS="$CFLAGS" + case "${host}" in + *-*-darwin*) + CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g` + CFLAGS="$CFLAGS -fPIC" + LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup" + ;; + *) + CFLAGS="$CFLAGS -fPIC" + LDFLAGS="$LDFLAGS -fPIC -shared" + ;; + esac + AC_MSG_CHECKING([for -fPIC -shared]) + AC_TRY_LINK( + [extern int X;],[return X == 0;], + [AC_MSG_RESULT([yes]); have_pic_shared=yes], + [AC_MSG_RESULT([no]); have_pic_shared=no]) + if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then + pluginlibs= + enable_plugin=no + fi + LDFLAGS="$saved_LDFLAGS" + CFLAGS="$saved_CFLAGS" + + # If plugin support had been requested but not available, fail. + if test x"$enable_plugin" = x"no" ; then + if test x"$default_plugin" != x"yes"; then + AC_MSG_ERROR([ +Building GCC with plugin support requires a host that supports +-fPIC, -shared, -ldl and -rdynamic.]) + fi + fi +fi + +AC_SUBST(pluginlibs) +AC_SUBST(enable_plugin) +if test x"$enable_plugin" = x"yes"; then + AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.]) +fi + + +AC_ARG_ENABLE(libquadmath-support, +[AS_HELP_STRING([--disable-libquadmath-support], + [disable libquadmath support for Fortran])], +ENABLE_LIBQUADMATH_SUPPORT=$enableval, +ENABLE_LIBQUADMATH_SUPPORT=yes) +if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then + AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1, + [Define to 1 to enable libquadmath support]) +fi + + +# Configure the subdirectories +# AC_CONFIG_SUBDIRS($subdirs) + +# Create the Makefile +# and configure language subdirectories +AC_CONFIG_FILES($all_outputs) + +AC_CONFIG_COMMANDS([default], +[ +case ${CONFIG_HEADERS} in + *auto-host.h:config.in*) + echo > cstamp-h ;; +esac +# Make sure all the subdirs exist. +for d in $subdirs doc build c-family +do + test -d $d || mkdir $d +done +], +[subdirs='$subdirs']) +AC_OUTPUT + |