--- Makefile.orig	Wed Nov  2 01:23:17 2005
+++ Makefile	Wed Nov  2 01:18:17 2005
@@ -1,7 +1,7 @@
 
-CC = gcc
-CFLAGS = -Wall -O
-DESTDIR = /usr/local
+CC ?= gcc
+CFLAGS += -Wall
+DESTDIR = ${PREFIX}
 
 loop:
 	${CC} ${CFLAGS} -o loop loop.c