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cc/gcc: add patch for 4.7.2

exporting patch:
# HG changeset patch
# User Richard Braun <rbraun@sceen.net>
# Date 1353500353 -3600
# Node ID c777aafa8c093c723ee317fdd5ca0c35ebe29790
# Parent  e097000b5420234168203460dae6ee13560e565e
cc/gcc: add patch for 4.7.2

This patch fixes compilation of gcc when C++ is enabled and MMX is
available, but not SSE/SSE2/AVX.

diff -r e097000b5420 -r c777aafa8c09 patches/gcc/4.7.2/000-libitm-fix-definition-of-__m64.patch
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/patches/gcc/4.7.2/000-libitm-fix-definition-of-__m64.patch	Wed Nov 21 13:19:13 2012 +0100
@@ -0,0 +1,26 @@
+From fd81a24e5a46badfaca606be0781e097aa3cb2e6 Mon Sep 17 00:00:00 2001
+From: Richard Braun <rbraun@sceen.net>
+Date: Wed, 21 Nov 2012 11:58:16 +0100
+Subject: [PATCH] libitm: fix definition of __m64
+
+---
+ libitm/config/x86/target.h |    3 +++
+ 1 files changed, 3 insertions(+), 0 deletions(-)
+
+diff --git a/libitm/config/x86/target.h b/libitm/config/x86/target.h
+index 5c7e6fb..6254d8a 100644
+--- a/libitm/config/x86/target.h
++++ b/libitm/config/x86/target.h
+@@ -73,6 +73,9 @@ cpu_relax (void)
+ /* ??? It's broken for C++. */
+ #include <x86intrin.h>
+ #else
++# ifdef __MMX__
++#  include <mmintrin.h>
++# endif
+ # ifdef __SSE2__
+ #  include <emmintrin.h>
+ # elif defined(__SSE__)
+-- 
+1.7.2.5
+

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