--- ghc-6.4.2/ghc/rts/RtsUtils.c	Thu Jan 12 13:43:03 2006
+++ ghc-6.4.2.old/ghc/rts/RtsUtils.c	Sat Apr 29 14:23:23 2006
@@ -16,7 +16,9 @@
 #include "Ticky.h"
 
 #ifdef HAVE_TIME_H
+#define _POSIX_PTHREAD_SEMANTICS
 #include <time.h>
+#undef _POSIX_PTHREAD_SEMANTICS
 #endif
 
 #ifdef HAVE_FCNTL_H