AC_MSG_CHECKING(for __sync_bool_compare_and_swap)
AC_TRY_COMPILE([],[
volatile unsigned int foo = 0;
-int main(int argc, char** argv) {
- unsigned int r1 = __sync_bool_compare_and_swap(&foo, 0, 1);
- return 0;
-}
+unsigned int r1 = __sync_bool_compare_and_swap(&foo, 0, 1);
+return 0;
], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAS___SYNC_BOOL_COMPARE_AND_SWAP)