# Process this file with autoconf to produce a configure script, like so: # aclocal -I ../config && autoconf && autoheader && automake AC_PREREQ(2.59) 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. # -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 -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/$multi_os_directory ;; esac ;; esac AC_SUBST(toolexecdir) AC_SUBST(toolexeclibdir) # Check the compiler. # The same as in boehm-gc and libstdc++. Have to borrow it from there. # We must force CC to /not/ be precious variables; otherwise # the wrong, non-multilib-adjusted value will be used in multilibs. # As a side effect, we have to subst CFLAGS ourselves. m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) m4_define([_AC_ARG_VAR_PRECIOUS],[]) AC_PROG_CC m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) AC_SUBST(CFLAGS) # In order to override CFLAGS_FOR_TARGET, all of our special flags go # in XCFLAGS. But we need them in CFLAGS during configury. So put them # in both places for now and restore CFLAGS at the end of config. save_CFLAGS="$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 $gcc_cv_prog_makeinfo_modern = "yes") # Configure libtool AM_PROG_LIBTOOL AC_SUBST(enable_shared) AC_SUBST(enable_static) AM_MAINTAINER_MODE # We need gfortran to compile parts of the library # We can't use AC_PROG_FC because it expects a fully working gfortran. #AC_PROG_FC(gfortran) FC="$GFORTRAN" AC_PROG_FC(gfortran) FCFLAGS="$FCFLAGS -Wall" # For libtool versioning info, format is CURRENT:REVISION:AGE libtool_VERSION=1:0:0 AC_SUBST(libtool_VERSION) # Check header files. AC_STDC_HEADERS AC_HEADER_TIME AC_CHECK_HEADERS(unistd.h semaphore.h sys/loadavg.h sys/time.h) GCC_HEADER_STDINT(gstdint.h) # Check to see if -pthread or -lpthread is needed. Prefer the former. # In case the pthread.h system header is not found, this test will fail. XPCFLAGS="" CFLAGS="$CFLAGS -pthread" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [#include void *g(void *d) { return NULL; }], [pthread_t t; pthread_create(&t,NULL,g,NULL);])], [XPCFLAGS=" -Wc,-pthread"], [CFLAGS="$save_CFLAGS" LIBS="-lpthread $LIBS" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [#include void *g(void *d) { return NULL; }], [pthread_t t; pthread_create(&t,NULL,g,NULL);])], [], [AC_MSG_ERROR([Pthreads are required to build libgomp])])]) # Check for functions needed. AC_CHECK_FUNCS(getloadavg clock_gettime) # Check for broken semaphore implementation on darwin. # sem_init returns: sem_init error: Function not implemented. case "$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 ], [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 # 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 $srcdir/config/$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]) # 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 $OMP_NEST_LOCK_SIZE; then OMP_NEST_LOCK_KIND=8 fi AC_SUBST(OMP_LOCK_SIZE) AC_SUBST(OMP_LOCK_ALIGN) AC_SUBST(OMP_NEST_LOCK_SIZE) AC_SUBST(OMP_NEST_LOCK_ALIGN) AC_SUBST(OMP_LOCK_KIND) AC_SUBST(OMP_NEST_LOCK_KIND) CFLAGS="$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