--- a/src/audio/SDL_mixer_MMX.c	Tue Feb 21 08:34:45 2006 +0000
+++ b/src/audio/SDL_mixer_MMX.c	Tue Feb 21 08:46:50 2006 +0000
@@ -1,3 +1,26 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2006 Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
 /*
     MMX assembler version of SDL_MixAudio for signed little endian 16 bit samples and signed 8 bit samples
     Copyright 2002 Stephane Marchesin (stephane.marchesin@wanadoo.fr)
@@ -12,7 +35,7 @@
 *   Mixing for 16 bit signed buffers
 ***********************************************/
 
-#if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT)
+#if defined(__GNUC__) && defined(__i386__) && defined(SDL_ASSEMBLY_ROUTINES)
 void SDL_MixAudio_MMX_S16(char* dst,char* src,unsigned int size,int volume)
 {
     __asm__ __volatile__ (