--- Makefile.rules.orig	2009-02-17 13:27:59.000000000 +0000
+++ Makefile.rules	2009-02-17 13:28:21.000000000 +0000
@@ -38,7 +38,9 @@
     # ppro's, etc, as well as the AMD K6 and K7.  
     #K6OPT=-DK6OPT
 
+ifneq ($(OSARCH),FreeBSD)
     OPTIMIZE?=-O6
+endif
     ASTCFLAGS+=$(OPTIMIZE)
 endif