diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/configure.ac b/configure.ac index cc1410f9e8d..45e892741f0 100644 --- a/configure.ac +++ b/configure.ac @@ -1013,18 +1013,24 @@ AC_SUBST(ARGP_STANDALONE_LDADD) AC_SUBST(ARGP_STANDALONE_DIR) dnl Check for atomic operation support -AC_CHECK_FUNC([__atomic_load], [have_atomic_builtins]) +AC_MSG_CHECKING([for gcc __atomic builtins]) +AC_TRY_LINK([], [int v; __atomic_load_n(&v, __ATOMIC_ACQUIRE);], + [have_atomic_builtins=yes], [have_atomic_builtins=no]) if test "x${have_atomic_builtins}" = "xyes"; then AC_DEFINE(HAVE_ATOMIC_BUILTINS, 1, [define if __atomic_*() builtins are available]) fi AC_SUBST(HAVE_ATOMIC_BUILTINS) +AC_MSG_RESULT([$have_atomic_builtins]) dnl __sync_*() will not be needed if __atomic_*() is available -AC_CHECK_FUNC([__sync_fetch_and_add], [have_sync_builtins]) -if test "x${have_sync_builtind}" = "xyes"; then +AC_MSG_CHECKING([for gcc __sync builtins]) +AC_TRY_LINK([], [__sync_synchronize();], + [have_sync_builtins=yes], [have_sync_builtins=no]) +if test "x${have_sync_builtins}" = "xyes"; then AC_DEFINE(HAVE_SYNC_BUILTINS, 1, [define if __sync_*() builtins are available]) fi AC_SUBST(HAVE_SYNC_BUILTINS) +AC_MSG_RESULT([$have_sync_builtins]) AC_CHECK_HEADER([malloc.h], AC_DEFINE(HAVE_MALLOC_H, 1, [have malloc.h])) |