--- Makefile.orig	2008-10-29 14:27:57.000000000 +0800
+++ Makefile	2009-02-08 04:35:10.000000000 +0800
@@ -1,4 +1,4 @@
-CFLAGS=-O2
+all: dev
 
 pigz: pigz.o yarn.o
 	cc -o pigz pigz.o yarn.o -lpthread -lz
