$NetBSD: patch-ab,v 1.1 2001/07/05 12:01:33 dmcmahill Exp $

--- src/md.h.orig	Sat Jun 30 03:20:53 2001
+++ src/md.h	Thu Jul  5 06:40:14 2001
@@ -46,5 +46,5 @@
 };
 /*--------------------------------------------------------------------------*/
-#if defined(__unix__)
+#if defined(__unix__) || defined(UNIX)
 /* usual but non-standard collection of includes */
 #include <unistd.h>	  /* chdir, access, getcwd */