$OpenBSD: patch-mono_utils_mono-threads-openbsd_c,v 1.1 2014/12/29 10:49:12 robert Exp $
--- mono/utils/mono-threads-openbsd.c.orig	Sun Dec 28 16:29:20 2014
+++ mono/utils/mono-threads-openbsd.c	Sun Dec 28 16:30:07 2014
@@ -2,6 +2,7 @@
 
 #if defined(__OpenBSD__)
 
+#include <mono/utils/mono-threads.h>
 #include <pthread.h>
 #include <pthread_np.h>
 
