diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/configure.ac b/configure.ac index e93bae92666..08403bd1434 100644 --- a/configure.ac +++ b/configure.ac @@ -893,11 +893,9 @@ AC_SUBST(ARGP_STANDALONE_DIR) # Check for atomic operation support echo -n "checking for atomic operation support... " -AC_LANG_CONFTEST([int main() { long int a = 4; __sync_fetch_and_add_8 (&a, 1); }]) -$CC conftest.c $CFLAGS -o conftest > /dev/null 2> /dev/null -ret=$? -rm -f conftest.o conftest -if test $ret -eq 0 ; then +AC_LINK_IFELSE([AC_LANG_SOURCE([[int main() { long int a = 4; __sync_fetch_and_add_8 (&a, 1); }]])], + [have_sync_fetch_and_add_8=yes], [have_sync_fetch_and_add_8=no]) +if test "x${have_sync_fetch_and_add_8}" = "xyes"; then echo "yes" AC_DEFINE(HAVE_ATOMIC_BUILTINS, 1, [have atomic builtins]) else |