Index: compiler-rt/lib/memprof/memprof_allocator.cpp
===================================================================
--- compiler-rt/lib/memprof/memprof_allocator.cpp
+++ compiler-rt/lib/memprof/memprof_allocator.cpp
@@ -52,7 +52,11 @@
     return 0;
   }
   timespec ts;
+#ifdef TIME_UTC
   timespec_get(&ts, TIME_UTC);
+#else
+  clock_gettime(CLOCK_REALTIME, &ts);
+#endif
   return (ts.tv_sec - memprof_init_timestamp_s) * 1000 + ts.tv_nsec / 1000000;
 }
 
Index: compiler-rt/lib/memprof/memprof_rtl.cpp
===================================================================
--- compiler-rt/lib/memprof/memprof_rtl.cpp
+++ compiler-rt/lib/memprof/memprof_rtl.cpp
@@ -234,7 +234,11 @@
   if (LIKELY(memprof_timestamp_inited))
     return;
   timespec ts;
+#ifdef TIME_UTC
   timespec_get(&ts, TIME_UTC);
+#else
+  clock_gettime(CLOCK_REALTIME, &ts);
+#endif
   memprof_init_timestamp_s = ts.tv_sec;
   memprof_timestamp_inited = 1;
 }