From b0b131b023ed3d31fa77cfcd5f9b82f2997c78c7 Mon Sep 17 00:00:00 2001
From: José Fonseca <jfonseca@vmware.com>
Date: Wed, 9 Sep 2009 21:45:08 +0100
Subject: scons: Pass -mstackrealign option to gcc.

It is impossible to have gcc generate SSE code without it, as thirdparty
applications often call us with an unaligned stack pointer.
---
 scons/gallium.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scons/gallium.py b/scons/gallium.py
index bf6172b4d77..47b07744be9 100644
--- a/scons/gallium.py
+++ b/scons/gallium.py
@@ -340,6 +340,7 @@ def generate(env):
                 '-m32',
                 #'-march=pentium4',
                 '-mmmx', '-msse', '-msse2', # enable SIMD intrinsics
+                '-mstackrealign', # ensure stack is aligned -- do not enabled -msse without it!
                 #'-mfpmath=sse',
             ]
         if env['machine'] == 'x86_64':
-- 
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