$NetBSD: patch-ab,v 1.2 2012/09/08 22:35:13 cheusov Exp $

--- src/iodefs.c.orig	2009-03-11 14:18:05 +0200
+++ src/iodefs.c		2009-03-11 14:18:31 +0200
@@ -11,8 +11,7 @@
 
 #include<stdio.h>
 #include<string.h>
-
-extern int errno;
+#include<errno.h>
 
 #define FOPEN(name, mode, fp)                                     \
   if ((fp = fopen(name, mode))==NULL) {                           \