--- make/include/gcc.defs.orig	2011-08-22 15:08:08.322100000 +0900
+++ make/include/gcc.defs	2011-10-15 20:34:17.737925255 +0900
@@ -47,7 +47,7 @@
 GCC.args.ML        = -fmessage-length=0
 GCC.args.H         = -H
 GCC.args.W         = -W$(1)
-GCC.args.archs     = -arch $(1)
+GCC.args.archs     = -march=$(1)
 GCC.args.sysroot   = --sysroot=$(1)
 GCC.args.ldsysroot = -syslibroot $(1)
 GCC.args.minver    = -mmacosx-version-min=$(1)