options/posix: Define _POSIX_MONOTONIC_CLOCK
@@ -28,6 +28,7 @@ extern "C" {
#define _POSIX_SPAWN _POSIX_VERSION
#define _POSIX_THREADS _POSIX_VERSION
#define _POSIX_THREAD_SAFE_FUNCTIONS _POSIX_VERSION
+#define _POSIX_MONOTONIC_CLOCK 0
#ifdef __MLIBC_CRYPT_OPTION
#define _XOPEN_CRYPT 1
