--- src/xlopen.c.orig	1996-11-10 19:56:10.000000000 +0100
+++ src/xlopen.c	2004-01-05 00:56:52.000000000 +0100
@@ -34,7 +34,7 @@ extern char *optarg;
 extern int optind, opterr;
 extern int useimageloader;
 extern struct hosttype *hosts_tail;
-#ifndef __NetBSD__
+#if !defined(__NetBSD__) && !defined(__FreeBSD__) && !defined(__OpenBSD__) /* XXX */
 extern char *sys_errlist[];
 #endif
 extern unsigned int total;
