$NetBSD: patch-strerror_c,v 1.1 2011/10/03 06:59:49 dholland Exp $

Don't redeclare libc symbols.

--- lib/strerror.c~	1997-02-18 12:50:13.000000000 +0000
+++ lib/strerror.c
@@ -11,7 +11,7 @@
 char *strerror(n)
   int n;
 {
-#if !defined(__FreeBSD__) && !defined(__BSDI__)
+#if !defined(__FreeBSD__) && !defined(__BSDI__) && !defined(__NetBSD__) && !defined(__OpenBSD__) && !defined(__DragonFly__) && !defined(__linux__)
   extern char *sys_errlist[];
 #endif