$NetBSD: patch-ac,v 1.2 2005/12/08 18:02:07 joerg Exp $

--- src/bgp/types/types.h.orig	2004-03-24 23:07:49.000000000 +1200
+++ src/bgp/types/types.h
@@ -395,7 +395,9 @@ typedef void (*vfp)( void );
  * under UNIX
  */
 #define _sys_errlist    sys_errlist
+#if !defined(__NetBSD__) && !defined(__DragonFly__) && !defined(__FreeBSD__)
 extern int sys_nerr;
+#endif
 #if !defined(ALPHA) && !defined(IRIX) && !defined(NETBSD)
 extern const char *const sys_errlist[];
 #endif