From 3c9f58a7abf015260e9aeffc97be2bd172c523e7 Mon Sep 17 00:00:00 2001
From: XXXXzzzz000 <119524428@qq.com>
Date: Fri, 23 Nov 2018 09:23:31 +0800
Subject: [PATCH] [tools] fix bug.

---
 tools/utils.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/utils.py b/tools/utils.py
index 692cf36c6..6dc56322a 100644
--- a/tools/utils.py
+++ b/tools/utils.py
@@ -245,7 +245,9 @@ def ProjectInfo(env):
     return proj
 
 def VersionCmp(ver1, ver2):
-    la = ver1.split('.')
+    la=[];
+    if ver1:
+        la = ver1.split('.')
     lb = ver2.split('.')
     f = 0
     if len(la) > len(lb):
-- 
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