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Diffstat (limited to 'libgomp/configure.ac')
| -rw-r--r-- | libgomp/configure.ac | 350 |
1 files changed, 350 insertions, 0 deletions
diff --git a/libgomp/configure.ac b/libgomp/configure.ac new file mode 100644 index 000000000..d87ed2932 --- /dev/null +++ b/libgomp/configure.ac @@ -0,0 +1,350 @@ +# Process this file with autoconf to produce a configure script, like so: +# aclocal -I ../config && autoconf && autoheader && automake + +AC_PREREQ(2.64) +AC_INIT([GNU OpenMP Runtime Library], 1.0,,[libgomp]) +AC_CONFIG_HEADER(config.h) + +# ------- +# Options +# ------- + +AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) +LIBGOMP_ENABLE(version-specific-runtime-libs, no, , + [Specify that runtime libraries should be installed in a compiler-specific directory], + permit yes|no) +AC_MSG_RESULT($enable_version_specific_runtime_libs) + +# We would like our source tree to be readonly. However when releases or +# pre-releases are generated, the flex/bison generated files as well as the +# various formats of manuals need to be included along with the rest of the +# sources. Therefore we have --enable-generated-files-in-srcdir to do +# just that. +AC_MSG_CHECKING([for --enable-generated-files-in-srcdir]) +LIBGOMP_ENABLE(generated-files-in-srcdir, no, , + [put copies of generated files in source dir intended for creating source + tarballs for users without texinfo bison or flex.], + permit yes|no) +AC_MSG_RESULT($enable_generated_files_in_srcdir) +AM_CONDITIONAL(GENINSRC, test "$enable_generated_files_in_srcdir" = yes) + + +# ------- +# ------- + +# Gets build, host, target, *_vendor, *_cpu, *_os, etc. +# +# You will slowly go insane if you do not grok the following fact: when +# building this library, the top-level /target/ becomes the library's /host/. +# +# configure then causes --target to default to --host, exactly like any +# other package using autoconf. Therefore, 'target' and 'host' will +# always be the same. This makes sense both for native and cross compilers +# just think about it for a little while. :-) +# +# Also, if this library is being configured as part of a cross compiler, the +# top-level configure script will pass the "real" host as $with_cross_host. +# +# Do not delete or change the following two lines. For why, see +# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html +AC_CANONICAL_SYSTEM +target_alias=${target_alias-$host_alias} + +# Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the +# following is magically included in AUTOMAKE_OPTIONS in each Makefile.am. +# 1.9.0: minimum required version +# no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch +# of other PACKAGE_* variables will, however, and there's nothing +# we can do about that; they come from AC_INIT). +# foreign: we don't follow the normal rules for GNU packages (no COPYING +# file in the top srcdir, etc, etc), so stop complaining. +# no-dist: we don't want 'dist' and related rules. +# -Wall: turns on all automake warnings... +# -Wno-portability: ...except this one, since GNU make is required. +# -Wno-override: ... and this one, since we do want this in testsuite. +AM_INIT_AUTOMAKE([1.9.0 foreign no-dist -Wall -Wno-portability -Wno-override]) +AM_ENABLE_MULTILIB(, ..) + +# Calculate toolexeclibdir +# Also toolexecdir, though it's only used in toolexeclibdir +case ${enable_version_specific_runtime_libs} in + yes) + # Need the gcc compiler version to know where to install libraries + # and header files if --enable-version-specific-runtime-libs option + # is selected. + toolexecdir='$(libdir)/gcc/$(target_alias)' + toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' + ;; + no) + if test -n "$with_cross_host" && + test x"$with_cross_host" != x"no"; then + # Install a library built with a cross compiler in tooldir, not libdir. + toolexecdir='$(exec_prefix)/$(target_alias)' + toolexeclibdir='$(toolexecdir)/lib' + else + toolexecdir='$(libdir)/gcc-lib/$(target_alias)' + toolexeclibdir='$(libdir)' + fi + multi_os_directory=`$CC -print-multi-os-directory` + case $multi_os_directory in + .) ;; # Avoid trailing /. + *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; + esac + ;; +esac +AC_SUBST(toolexecdir) +AC_SUBST(toolexeclibdir) + +# Check the compiler. +# The same as in boehm-gc and libstdc++. Have to borrow it from there. +# We must force CC to /not/ be precious variables; otherwise +# the wrong, non-multilib-adjusted value will be used in multilibs. +# As a side effect, we have to subst CFLAGS ourselves. + +m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) +m4_define([_AC_ARG_VAR_PRECIOUS],[]) +AC_PROG_CC +m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) + +AC_SUBST(CFLAGS) + +# In order to override CFLAGS_FOR_TARGET, all of our special flags go +# in XCFLAGS. But we need them in CFLAGS during configury. So put them +# in both places for now and restore CFLAGS at the end of config. +save_CFLAGS="$CFLAGS" + +# Add -Wall -Werror if we are using GCC. +if test "x$GCC" = "xyes"; then + XCFLAGS="$XCFLAGS -Wall -Werror" +fi + +# Find other programs we need. +AC_CHECK_TOOL(AR, ar) +AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) +AC_PATH_PROG(PERL, perl, perl-not-found-in-path-error) +AC_PROG_MAKE_SET +AC_PROG_INSTALL + +# 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.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) +AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes") + + +# Configure libtool +AM_PROG_LIBTOOL +ACX_LT_HOST_FLAGS +AC_SUBST(enable_shared) +AC_SUBST(enable_static) + +AM_MAINTAINER_MODE + +# Create a spec file, so that compile/link tests don't fail +test -f libgfortran.spec || touch libgfortran.spec +FCFLAGS="$FCFLAGS -L." + +# We need gfortran to compile parts of the library +# We can't use AC_PROG_FC because it expects a fully working gfortran. +#AC_PROG_FC(gfortran) +case `echo $GFORTRAN` in + -* | no* ) + FC=no ;; + *) + set dummy $GFORTRAN; ac_word=$2 + if test -x "$ac_word"; then + FC="$GFORTRAN" + else + FC=no + fi ;; +esac +AC_PROG_FC(gfortran) +FCFLAGS="$FCFLAGS -Wall -L../libgfortran" + +# For libtool versioning info, format is CURRENT:REVISION:AGE +libtool_VERSION=1:0:0 +AC_SUBST(libtool_VERSION) + +# Check header files. +AC_STDC_HEADERS +AC_HEADER_TIME +ACX_HEADER_STRING +AC_CHECK_HEADERS(unistd.h semaphore.h sys/loadavg.h sys/time.h sys/time.h) + +GCC_HEADER_STDINT(gstdint.h) + +# Check to see if -pthread or -lpthread is needed. Prefer the former. +# In case the pthread.h system header is not found, this test will fail. +XPCFLAGS="" +CFLAGS="$CFLAGS -pthread" +AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [#include <pthread.h> + void *g(void *d) { return NULL; }], + [pthread_t t; pthread_create(&t,NULL,g,NULL);])], + [XPCFLAGS=" -Wc,-pthread"], + [CFLAGS="$save_CFLAGS" LIBS="-lpthread $LIBS" + AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [#include <pthread.h> + void *g(void *d) { return NULL; }], + [pthread_t t; pthread_create(&t,NULL,g,NULL);])], + [], + [AC_MSG_ERROR([Pthreads are required to build libgomp])])]) + +# Check for functions needed. +AC_CHECK_FUNCS(getloadavg clock_gettime strtoull) + +# Check for broken semaphore implementation on darwin. +# sem_init returns: sem_init error: Function not implemented. +case "$host" in + *-darwin*) + AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1, + Define if the POSIX Semaphores do not work on your system.) + ;; +esac + +GCC_LINUX_FUTEX(:) + +# Check for pthread_{,attr_}[sg]etaffinity_np. +AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [#define _GNU_SOURCE + #include <pthread.h>], + [cpu_set_t cpuset; + pthread_attr_t attr; + pthread_getaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset); + if (CPU_ISSET (0, &cpuset)) + CPU_SET (1, &cpuset); + else + CPU_ZERO (&cpuset); + pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset); + pthread_attr_init (&attr); + pthread_attr_getaffinity_np (&attr, sizeof (cpu_set_t), &cpuset); + pthread_attr_setaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);])], + AC_DEFINE(HAVE_PTHREAD_AFFINITY_NP, 1, +[ Define if pthread_{,attr_}{g,s}etaffinity_np is supported.])) + +# At least for glibc, clock_gettime is in librt. But don't pull that +# in if it still doesn't give us the function we want. +if test $ac_cv_func_clock_gettime = no; then + AC_CHECK_LIB(rt, clock_gettime, + [LIBS="-lrt $LIBS" + AC_DEFINE(HAVE_CLOCK_GETTIME, 1, + [Define to 1 if you have the `clock_gettime' function.])]) +fi + +# See if we support thread-local storage. +GCC_CHECK_TLS + +# See what sort of export controls are availible. +LIBGOMP_CHECK_ATTRIBUTE_VISIBILITY +LIBGOMP_CHECK_ATTRIBUTE_DLLEXPORT +LIBGOMP_CHECK_ATTRIBUTE_ALIAS +LIBGOMP_ENABLE_SYMVERS + +if test $enable_symvers = gnu; then + AC_DEFINE(LIBGOMP_GNU_SYMBOL_VERSIONING, 1, + [Define to 1 if GNU symbol versioning is used for libgomp.]) +fi + +# Get target configury. +. ${srcdir}/configure.tgt +CFLAGS="$save_CFLAGS $XCFLAGS" + +# Check for __sync_val_compare_and_swap, but only after the target has +# had a chance to set XCFLAGS. +LIBGOMP_CHECK_SYNC_BUILTINS + +XCFLAGS="$XCFLAGS$XPCFLAGS" + +AC_SUBST(config_path) +AC_SUBST(XCFLAGS) +AC_SUBST(XLDFLAGS) + +# Cleanup and exit. +CFLAGS="$save_CFLAGS" +AC_CACHE_SAVE + +if test ${multilib} = yes; then + multilib_arg="--enable-multilib" +else + multilib_arg= +fi + +# Set up the set of libraries that we need to link against for libgomp. +# Note that the GOMP_SELF_SPEC in gcc.c will force -pthread for -fopenmp, +# which will force linkage against -lpthread (or equivalent for the system). +# That's not 100% ideal, but about the best we can do easily. +if test $enable_shared = yes; then + link_gomp="-lgomp %{static: $LIBS}" +else + link_gomp="-lgomp $LIBS" +fi +AC_SUBST(link_gomp) + +AM_CONDITIONAL([USE_FORTRAN], [test "$ac_cv_fc_compiler_gnu" = yes]) + +# ??? 2006-01-24: Paulo committed to asking autoconf folk to document +# and export AC_COMPUTE_INT. If that happens, then we'll need to remove +# the underscore here and update the PREREQ. If it doesn't, then we'll +# need to copy this macro to our acinclude.m4. +save_CFLAGS="$CFLAGS" +for i in $config_path; do + if test -f $srcdir/config/$i/omp-lock.h; then + CFLAGS="$CFLAGS -include confdefs.h -include $srcdir/config/$i/omp-lock.h" + break + fi +done + +_AC_COMPUTE_INT([sizeof (omp_lock_t)], [OMP_LOCK_SIZE],, + [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_t)])]) +_AC_COMPUTE_INT([__alignof (omp_lock_t)], [OMP_LOCK_ALIGN]) +_AC_COMPUTE_INT([sizeof (omp_nest_lock_t)], [OMP_NEST_LOCK_SIZE]) +_AC_COMPUTE_INT([__alignof (omp_nest_lock_t)], [OMP_NEST_LOCK_ALIGN]) +_AC_COMPUTE_INT([sizeof (omp_lock_25_t)], [OMP_LOCK_25_SIZE],, + [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_25_t)])]) +_AC_COMPUTE_INT([__alignof (omp_lock_25_t)], [OMP_LOCK_25_ALIGN]) +_AC_COMPUTE_INT([sizeof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_SIZE]) +_AC_COMPUTE_INT([__alignof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_ALIGN]) + +# If the lock fits in an integer, then arrange for Fortran to use that +# integer. If it doesn't, then arrange for Fortran to use a pointer. +# Except that we don't have a way at present to multi-lib the installed +# Fortran modules, so we assume 8 bytes for pointers, regardless of the +# actual target. +OMP_LOCK_KIND=$OMP_LOCK_SIZE +OMP_NEST_LOCK_KIND=$OMP_NEST_LOCK_SIZE +if test $OMP_LOCK_SIZE -gt 8 || test $OMP_LOCK_ALIGN -gt $OMP_LOCK_SIZE; then + OMP_LOCK_KIND=8 +fi +if test $OMP_NEST_LOCK_SIZE -gt 8 || test $OMP_NEST_LOCK_ALIGN -gt $OMP_NEST_LOCK_SIZE; then + OMP_NEST_LOCK_KIND=8 +fi +OMP_LOCK_25_KIND=$OMP_LOCK_25_SIZE +OMP_NEST_LOCK_25_KIND=$OMP_NEST_LOCK_25_SIZE +if test $OMP_LOCK_25_SIZE -gt 8 || test $OMP_LOCK_25_ALIGN -gt $OMP_LOCK_25_SIZE; then + OMP_LOCK_25_KIND=8 +fi +if test $OMP_NEST_LOCK_25_SIZE -gt 8 || test $OMP_NEST_LOCK_25_ALIGN -gt $OMP_NEST_LOCK_25_SIZE; then + OMP_NEST_LOCK_25_KIND=8 +fi + +AC_SUBST(OMP_LOCK_SIZE) +AC_SUBST(OMP_LOCK_ALIGN) +AC_SUBST(OMP_NEST_LOCK_SIZE) +AC_SUBST(OMP_NEST_LOCK_ALIGN) +AC_SUBST(OMP_LOCK_KIND) +AC_SUBST(OMP_NEST_LOCK_KIND) +AC_SUBST(OMP_LOCK_25_SIZE) +AC_SUBST(OMP_LOCK_25_ALIGN) +AC_SUBST(OMP_NEST_LOCK_25_SIZE) +AC_SUBST(OMP_NEST_LOCK_25_ALIGN) +AC_SUBST(OMP_LOCK_25_KIND) +AC_SUBST(OMP_NEST_LOCK_25_KIND) +CFLAGS="$save_CFLAGS" + +AC_CONFIG_FILES(omp.h omp_lib.h omp_lib.f90 libgomp_f.h) +AC_CONFIG_FILES(Makefile testsuite/Makefile libgomp.spec) +AC_OUTPUT |