From 7b0d591dc319d0fb64ca353e280f224a94a2e773 Mon Sep 17 00:00:00 2001
From: Ben Laurie <ben@links.org>
Date: Mon, 4 Mar 2013 14:08:23 +0000
Subject: [PATCH] Allow variables to be overridden on the command line.

---
 util/files.pl | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/util/files.pl b/util/files.pl
index 41f033e3b9..b15407f0c9 100755
--- a/util/files.pl
+++ b/util/files.pl
@@ -4,6 +4,12 @@
 # It is basically a list of all variables from the passed makefile
 #
 
+while ($ARGV[0] =~ /^(\S+)\s*=(.*)$/)
+	{
+	$sym{$1} = $2;
+	shift;
+	}
+
 $s="";
 while (<>)
 	{
@@ -33,7 +39,7 @@ while (<>)
 		$o =~ s/\s+/ /g;
 
 		$o =~ s/\$[({]([^)}]+)[)}]/$sym{$1}/g;
-		$sym{$s}=$o;
+		$sym{$s}=$o if !exists $sym{$s};
 		}
 	}
 
-- 
2.40.0