--- makefile.orig	Wed Jun 23 18:01:06 2004
+++ makefile	Wed Jun 23 18:01:50 2004
@@ -10,7 +10,7 @@
 else
 OS_CCDEFS = -D_GNU_SOURCE
 endif
-CC = gcc -std=c99 -O2 -g -lm $(OS_CCDEFS) -I .
+CC += ${CFLAGS} -lm $(OS_CCDEFS) -I .
 ifeq ($(USE_NETWORK),)
 else
 NETWORK_OPT = -DUSE_NETWORK -lpcap  -isystem /usr/local/include -L /usr/local/lib