--- cogl/winsys/cogl-winsys-glx.c.orig	2014-03-21 08:50:34.000000000 -0700
+++ cogl/winsys/cogl-winsys-glx.c	2014-03-22 07:26:28.000000000 -0700
@@ -66,7 +66,28 @@
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <fcntl.h>
+
+#if __APPLE__ && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101200
+#include <mach/mach_time.h>
+#ifndef CLOCK_REALTIME
+#define CLOCK_REALTIME 0
+#define CLOCK_MONOTONIC 0
+#endif
+static int 
+clock_gettime(int clk_id, struct timespec *t){
+    mach_timebase_info_data_t timebase;
+    mach_timebase_info(&timebase);
+    uint64_t time;
+    time = mach_absolute_time();
+    double nseconds = ((double)time * (double)timebase.numer)/((double)timebase.denom);
+    double seconds = ((double)time * (double)timebase.numer)/((double)timebase.denom * 1e9);
+    t->tv_sec = seconds;
+    t->tv_nsec = nseconds;
+    return 0;
+}
+#else
 #include <time.h>
+#endif
 
 #include <GL/glx.h>
 #include <X11/Xlib.h>