Fix timevar.cc build on systems that don't have CLOCK_MONOTONIC

2024-12-26  John David Anglin  <[email protected]>

gcc/ChangeLog:

	PR target/118050
	* timevar.cc (get_time): Only use CLOCK_MONOTONIC if
	'_POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK)'.
	Otherise, use CLOCK_REALTIME.

Author: John David Anglin

gcc/timevar.cc

@@ -160,7 +160,11 @@ get_time (struct timevar_time_def *now)
 
 #ifdef HAVE_CLOCK_GETTIME
   struct timespec ts;
+#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK)
   clock_gettime (CLOCK_MONOTONIC, &ts);
+#else
+  clock_gettime (CLOCK_REALTIME, &ts);
+#endif
   now->wall = ts.tv_sec * 1000000000 + ts.tv_nsec;
   return;
 #define HAVE_WALL_TIME 1