Index: files/patch-bug786995
===================================================================
--- files/patch-bug786995	(revision 0)
+++ files/patch-bug786995	(working copy)
@@ -0,0 +1,36 @@
+# Bug 786995 - configure should check for SSSE3 support in the whole toolchain
+
+--- configure.in.orig	2012-09-02 00:37:29.000000000 +0200
++++ configure.in	2012-09-02 00:38:50.000000000 +0200
+@@ -1710,15 +1710,15 @@
+     _MOZ_RTTI_FLAGS_OFF=-fno-rtti
+ 
+     # Check for -mssse3 on $CC
+-    AC_MSG_CHECKING([for -mssse3 option to $CC])
+-    HAVE_COMPILER_FLAG_MSSSE3=
++    AC_MSG_CHECKING([if toolchain supports -mssse3 option])
++    HAVE_TOOLCHAIN_SUPPORT_MSSSE3=
+     _SAVE_CFLAGS=$CFLAGS
+     CFLAGS="$CFLAGS -mssse3"
+-    AC_TRY_COMPILE(,,AC_MSG_RESULT([yes])
+-                     [HAVE_COMPILER_FLAG_MSSSE3=1],
++    AC_TRY_COMPILE([asm ("pmaddubsw %xmm2,%xmm3");],,AC_MSG_RESULT([yes])
++                     [HAVE_TOOLCHAIN_SUPPORT_MSSSE3=1],
+                      AC_MSG_RESULT([no]))
+     CFLAGS=$_SAVE_CFLAGS
+-    AC_SUBST(HAVE_COMPILER_FLAG_MSSSE3)
++    AC_SUBST(HAVE_TOOLCHAIN_SUPPORT_MSSSE3)
+ 
+     # Turn on GNU-specific warnings:
+     # -Wall - turn on a lot of warnings
+--- gfx/skia/Makefile.in.orig	2012-09-02 00:39:00.000000000 +0200
++++ gfx/skia/Makefile.in	2012-09-02 00:39:21.000000000 +0200
+@@ -365,7 +365,7 @@
+ 	SkUtils_opts_SSE2.cpp \
+ 	opts_check_SSE2.cpp \
+ 	$(NULL)
+-ifdef HAVE_COMPILER_FLAG_MSSSE3
++ifdef HAVE_TOOLCHAIN_SUPPORT_MSSSE3
+ DEFINES += -DSK_BUILD_SSSE3
+ CPPSRCS += SkBitmapProcState_opts_SSSE3.cpp
+ endif