$NetBSD: patch-by,v 1.1 2006/01/24 19:01:45 joerg Exp $

--- src/builtin++.c.orig	2006-01-24 17:40:58.000000000 +0000
+++ src/builtin++.c
@@ -8,13 +8,13 @@ static char rcsid[] = "@(#)$Id: builtin+
  *  Initially written by: Michael Elkins <elkins@aero.org>, 1995
  *****************************************************************************/
 
+#include <errno.h>
 #include "headers.h"
 #include "me.h"
 #include "s_elm.h"
 
 DEBUG_VAR(Debug,__FILE__,"ui");
 
-extern int errno;
 extern int tabspacing;
 
 static void builtin_help P_((void));
