$OpenBSD: patch-src_sema_c,v 1.3 2010/05/20 09:21:17 espie Exp $
--- src/sema.c.orig	Sun Dec 28 09:12:38 2003
+++ src/sema.c	Wed May 19 18:54:18 2010
@@ -41,7 +41,7 @@ $Id: patch-src_sema_c,v 1.3 2010/05/20 09:21:17 espie Exp $
 
 #include "sema.h"
 
-#if !(defined(BSD) && (BSD >= 199103))
+#if !(defined(BSD) && (BSD >= 199103)) && !defined(__OpenBSD__)
        #if defined(__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED)
        /* union semun is defined by including <sys/sem.h> */
        #else