$NetBSD: patch-ab,v 1.2 2005/06/19 20:44:06 minskim Exp $

--- defs.h.orig	2001-04-02 08:57:20.000000000 -0500
+++ defs.h
@@ -5,8 +5,9 @@
 #include <assert.h>
 #include <ctype.h>
 #include <stdio.h>
-#include <malloc.h>
-
+#include <stdlib.h>
+#include <unistd.h>
+#include <unistd.h>
 
 
 /*  machine-dependent definitions			*/
@@ -242,8 +243,8 @@ extern int nvars;
 extern int ntags;
 
 extern char unionized;
-extern char line_format[];
-extern char jline_format[];/*rwj*/
+extern const char *line_format;
+extern const char *jline_format;/*rwj*/
 
 extern int   start_symbol;
 extern char  **symbol_name;
@@ -291,8 +292,11 @@ extern short final_state;
 
 /* system variables */
 
+#ifdef NEED_ERRNO
 extern int errno;
-
+#else
+#include <errno.h>
+#endif
 
 /************************
 ## PROTOTYPES