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$NetBSD: patch-ah,v 1.1 2005/06/04 10:44:29 wiz Exp $

--- agrep/checksg.c.orig	2002-09-27 23:41:09.000000000 +0200
+++ agrep/checksg.c
@@ -3,7 +3,9 @@
 #include "checkfile.h"
 #include <errno.h>
 
+#ifndef errno
 extern int errno;
+#endif
 extern CHAR Progname[MAXNAME]; 
 extern int SGREP, PAT_FILE, PAT_BUFFER, EXITONERROR, SIMPLEPATTERN,
 	CONSTANT, D, NOUPPER, JUMP, I, LINENUM, INVERSE, WORDBOUND, WHOLELINE,