From 3c861518879d3ccc94d9287e4e845a9c5d08c318 Mon Sep 17 00:00:00 2001
From: jmallett <jmallett@FreeBSD.org>
Date: Thu, 20 Jun 2002 19:51:13 +0000
Subject: [PATCH] Fix a bug fixed by NetBSD in revision 1.42 of parse.c by
 christos which caused an example Makefile I was showing someone just last
 night to report a variable as being recursive.

Obtained from:	NetBSD
---
 usr.bin/make/parse.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/usr.bin/make/parse.c b/usr.bin/make/parse.c
index 3e1eed5b0358..e549bb3faaee 100644
--- a/usr.bin/make/parse.c
+++ b/usr.bin/make/parse.c
@@ -1434,6 +1434,14 @@ Parse_DoVar (line, ctxt)
 	Boolean	  oldOldVars = oldVars;
 
 	oldVars = FALSE;
+
+	/*
+	 * make sure that we set the variable the first time to nothing
+	 * so that it gets substituted!
+	 */
+	if (!Var_Exists(line, ctxt))
+	    Var_Set(line, "", ctxt);
+
 	cp = Var_Subst(NULL, cp, ctxt, FALSE);
 	oldVars = oldOldVars;