From 1fb672121c14e39ab4c86e8c74905f6515dc0041 Mon Sep 17 00:00:00 2001
From: "Christoph M. Wintersteiger" <cwinter@microsoft.com>
Date: Fri, 24 Jun 2016 13:57:53 +0100
Subject: [PATCH] build fix for cygwin/mingw

---
 scripts/mk_util.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/mk_util.py b/scripts/mk_util.py
index 509487e23..8fafd1caa 100644
--- a/scripts/mk_util.py
+++ b/scripts/mk_util.py
@@ -604,7 +604,7 @@ elif os.name == 'posix':
         IS_OPENBSD=True
     elif os.uname()[0][:6] == 'CYGWIN':
         IS_CYGWIN=True
-        if ("mingw" in CC):
+        if (CC != None and "mingw" in CC):
             IS_CYGWIN_MINGW=True
 
 def display_help(exit_code):