From 13fe6d1c466a7c73dea0c8019164d713c5d5d565 Mon Sep 17 00:00:00 2001
From: Stefan Krah <skrah@bytereef.org>
Date: Thu, 17 Jan 2013 12:49:34 +0100
Subject: Fix build with 3.x gcc versions.

---
 setup.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/setup.py b/setup.py
index 3bbd623..4d69326 100644
--- a/setup.py
+++ b/setup.py
@@ -1997,8 +1997,12 @@ class PyBuildExt(build_ext):
 
         # Increase warning level for gcc:
         if 'gcc' in cc:
-            extra_compile_args.extend(['-Wextra',
-                                       '-Wno-missing-field-initializers'])
+            cmd = ("echo '' | gcc -Wextra -Wno-missing-field-initializers -E - "
+                   "> /dev/null 2>&1")
+            ret = os.system(cmd)
+            if ret >> 8 == 0:
+                extra_compile_args.extend(['-Wextra',
+                                           '-Wno-missing-field-initializers'])
 
         # Uncomment for extra functionality:
         #define_macros.append(('EXTRA_FUNCTIONALITY', 1))
-- 
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