$NetBSD: patch-ad,v 1.3 2001/04/23 17:33:06 wulf Exp $

--- support/cpp/cpplib.c.orig	Mon Apr  9 20:29:46 2001
+++ support/cpp/cpplib.c	Mon Apr  9 20:28:42 2001
@@ -7466,7 +7466,7 @@
 #if defined(bsd4_4)
 extern const char *const sys_errlist[];
 #else
-#if !defined(linux)
+#if !defined(linux) && !defined(__FreeBSD__) && !defined(__NetBSD__)
 extern char *sys_errlist[];
 #endif
 #endif