$NetBSD: patch-ah,v 1.4 2009/12/10 20:35:56 abs Exp $

--- lib/libxview/base/xv_error.c.orig	1993-06-29 05:14:42.000000000 +0000
+++ lib/libxview/base/xv_error.c
@@ -11,15 +11,20 @@ static char     sccsid[] = "@(#)xv_error
  */
 
 #include <stdio.h>
+#include <sys/param.h>
 #include <xview/pkg_public.h>
 #include <X11/Xlib.h>
 #include <xview_private/i18n_impl.h>
 #include <xview_private/portable.h>
 
 /* Unix system error variables */
+#if (defined(BSD) && (BSD >= 199306))
+#include <errno.h>
+#else
 extern int      sys_nerr;
-extern char    *sys_errlist[];
 extern int      errno;
+extern char    *sys_errlist[];
+#endif
 
 Xv_private_data char *xv_app_name;
 Xv_private int (*xv_error_proc) ();