libreplace: make a define for a best effort monotonic clock

diff --git a/lib/replace/system/time.h b/lib/replace/system/time.h
index ff26531e45b8d4b179056e659799f8ceb25227e4..3605d2692e85a10dc53714be19e7966a982cb91e 100644 (file)
--- a/lib/replace/system/time.h
+++ b/lib/replace/system/time.h
@@ -67,9 +67,16 @@ int rep_utimes(const char *filename, const struct timeval tv[2]);
 #endif
 
 #ifndef HAVE_CLOCK_GETTIME
+/* CLOCK_REALTIME is required by POSIX */
 #define CLOCK_REALTIME 0
 typedef int clockid_t;
 int rep_clock_gettime(clockid_t clk_id, struct timespec *tp);
 #endif
+/* make sure we have a best effort CUSTOM_CLOCK_MONOTONIC we can rely on */
+#ifndef CLOCK_MONOTONIC
+#define CUSTOM_CLOCK_MONOTONIC CLOCK_REALTIME
+#else
+#define CUSTOM_CLOCK_MONOTONIC CLOCK_MONOTONIC
+#endif
 
 #endif