$OpenBSD: patch-src_filter_c,v 1.1.1.1 2007/09/11 20:52:49 merdely Exp $
--- src/filter.c.orig	Tue Sep 11 10:07:02 2007
+++ src/filter.c	Tue Sep 11 10:07:13 2007
@@ -51,7 +51,7 @@ $Id: filter.c,v 1.35 2007/01/05 22:14:10 whmoseley Exp
 #endif /* HAVE_SYS_WAIT_H */
 #endif /* HAVE_WORKING_FORK */
 
-
+#include <signal.h>
 
 
 
