gcc/libgomp/configure.ac

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# 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
AC_SUBST(enable_shared)
AC_SUBST(enable_static)
AM_MAINTAINER_MODE
# 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"
# 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