--- ./Makefile.orig	2014-03-18 08:44:13.925827724 +0100
+++ ./Makefile	2014-03-18 08:44:31.479832342 +0100
@@ -1,6 +1,5 @@
 UNAME = $(shell uname)
-CC = gcc
-CFLAGS = -g -Wall -O2
+CC ?= gcc
 LIBS = -lz
 OFILES = util.o keywords.o flasm.o unflasm.o lex.yy.o assembler.tab.o
 GARBAGE = assembler.tab.* lex.yy.c memwatch.o gmon.out memwatch.log core