AC_MSG_RESULT($enable_version_specific_runtime_libs)
AC_MSG_CHECKING([for --enable-linux-futex])
-LIBGOMP_ENABLE(linux-futex, yes,
+LIBGOMP_ENABLE(linux-futex, default, ,
[Use the Linux futex system call],
- permit yes|no)
+ permit yes|no|default)
AC_MSG_RESULT($enable_linux_futex)
+# 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)
+
+
# -------
# -------
# 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-dependencies: turns off auto dependency generation (just for now)
# -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.
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 $gcc_cv_prog_makeinfo_modern = "yes")
+
+
# Configure libtool
AM_PROG_LIBTOOL
AC_SUBST(enable_shared)
# Check for functions needed.
AC_CHECK_FUNCS(getloadavg clock_gettime)
+# Check for broken semaphore implementation on darwin.
+# sem_init returns: sem_init error: Function not implemented.
+case "$host" in
+ *-darwin*)
+ AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1,
+ Define if the POSIX Semaphores do not work on your system.)
+ ;;
+ *-linux*)
+ case "$enable_linux_futex" in
+ default)
+ # If headers don't have gettid/futex syscalls definition, then
+ # default to no, otherwise there will be compile time failures.
+ # Otherwise, default to yes. If we don't detect we are
+ # compiled/linked against NPTL and not cross-compiling, check
+ # if programs are run by default against NPTL and if not, issue
+ # a warning.
+ enable_linux_futex=no
+ AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [#include <sys/syscall.h>
+ int lk;],
+ [syscall (SYS_gettid); syscall (SYS_futex, &lk, 0, 0, 0);])],
+ [AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [#ifndef _GNU_SOURCE
+ #define _GNU_SOURCE 1
+ #endif
+ #include <pthread.h>
+ pthread_t th; void *status;],
+ [pthread_tryjoin_np (th, &status);])],[enable_linux_futex=yes],
+ [if test x$cross_compiling = xno; then
+ if getconf GNU_LIBPTHREAD_VERSION 2>/dev/null \
+ | LC_ALL=C grep -i NPTL > /dev/null 2>/dev/null; then
+ AC_MSG_WARN([The kernel might not support futex or gettid syscalls.
+If so, please configure with --disable-linux-futex])
+ fi
+ fi
+ enable_linux_futex=yes])])
+ ;;
+ yes)
+ AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [#include <sys/syscall.h>
+ int lk;],
+ [syscall (SYS_gettid); syscall (SYS_futex, &lk, 0, 0, 0);])],[],
+ [AC_MSG_ERROR([SYS_gettid and SYS_futex required for --enable-linux-futex])])
+ ;;
+ esac
+ ;;
+esac
+
+# 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,
+ AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
[Define to 1 if you have the `clock_gettime' function.])])
fi
# See if we support thread-local storage.
-LIBGOMP_CHECK_TLS
+GCC_CHECK_TLS
# See what sort of export controls are availible.
LIBGOMP_CHECK_ATTRIBUTE_VISIBILITY
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