--- asterisk-1.2.0/Makefile.orig	2005-11-21 14:34:29.000000000 +0100
+++ asterisk-1.2.0/Makefile	2005-11-21 14:34:36.000000000 +0100
@@ -177,8 +177,8 @@
 
   ifeq ($(PROC),x86_64)
     # You must have GCC 3.4 to use k8, otherwise use athlon
-    PROC=k8
-    #PROC=athlon
+    #PROC=k8
+    PROC=athlon
     OPTIONS+=-m64
   endif