$NetBSD: patch-ab,v 1.1 2005/12/27 13:53:22 joerg Exp $

--- src.x11/pty.c.orig	2005-12-19 15:40:24.000000000 +0000
+++ src.x11/pty.c
@@ -31,6 +31,9 @@
 **    'x'              		the current input line is empty
 **    'z' 			start of 'Exec'
 */
+
+#include <errno.h>
+
 #include    "utils.h"
 
 #include    "gaptext.h"
@@ -192,7 +195,6 @@ Int ReadGap ( line, len )
 **
 *F  WriteGap( <line>, <len> ) . . . . . . . . . . . . . . . . write gap input
 */
-extern int errno;
 
 #ifdef DEBUG_ON