--- Makefile.orig	2008-08-28 23:37:00.000000000 +0200
+++ Makefile	2009-03-16 10:28:20.000000000 +0100
@@ -12,7 +12,7 @@
 VERSION = 3.6.0
 
 CC	= gcc
-CFLAGS	= -I./src -I./userial -O2 -Wall # -g
+CFLAGS	= -I./src -I./userial $(OPT_CFLAGS) # -Wall -g
 
 OBJS		=	src/digitemp.o src/device_name.o src/ds2438.o
 HDRS		= 	src/digitemp.h src/device_name.h