# HG changeset patch
# User Augie Fackler <raf@durin42.com>
# Date 1404675806 14400
# Node ID 521355a95636a81cd75266330f9cf13ccaaaaf51
# Parent  0c88185c7d6c4718a1444b7635280a95f98f7e2c# Parent  0022ee690446dcf42075780ff9022d8f7d8e69f0
Merge with crew.

diff -r 0022ee690446 -r 521355a95636 setup.py
--- a/setup.py	Thu Jul 03 19:05:04 2014 +0200
+++ b/setup.py	Sun Jul 06 15:43:26 2014 -0400
@@ -534,7 +534,7 @@
     # so Mercurial can continue to compile in the meantime.
     if xcode51:
         cflags = get_config_var('CFLAGS')
-        if re.search(r'-mno-fused-madd\b', cflags) is not None:
+        if cflags and re.search(r'-mno-fused-madd\b', cflags) is not None:
             os.environ['CFLAGS'] = (
                 os.environ.get('CFLAGS', '') + ' -Qunused-arguments')