Index: timing_mach.c
--- timing_mach.c.orig
+++ timing_mach.c
@@ -65,6 +65,8 @@ int clock_gettime(clockid_t id, struct timespec *tspec
     return 0;
 }
 
+#endif
+#if defined(__MACH__) || defined(__OpenBSD__)
 int clock_nanosleep_abstime(const struct timespec *req) {
     struct timespec ts_delta;
     int retval = clock_gettime(CLOCK_MONOTONIC, &ts_delta);
