From cda354b07035f73a3b220f89014721300d36a815 Mon Sep 17 00:00:00 2001
From: Nathan Binkert <nate@binkert.org>
Date: Thu, 26 Jul 2007 22:45:33 -0700
Subject: [PATCH] scons: make things work when EXTRAS is not defined.

--HG--
extra : convert_revision : 83562b55ec099e609c64cd42eb47a8481e4e85e7
---
 SConstruct | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/SConstruct b/SConstruct
index 1f3dfb5bb..a2760c4a4 100644
--- a/SConstruct
+++ b/SConstruct
@@ -436,6 +436,8 @@ all_cpu_list.sort()
 default_cpus.sort()
 
 def ExtraPathValidator(key, val, env):
+    if not val:
+        return
     paths = val.split(':')
     for path in paths:
         path = os.path.expanduser(path)