--- makefile.orig	Mon Aug 22 18:36:56 2005
+++ makefile	Mon Aug 22 18:37:56 2005
@@ -10,7 +10,7 @@
 else
 OS_CCDEFS = -D_GNU_SOURCE
 endif
-CC = gcc -std=c99 -O2 -U__STRICT_ANSI__ -g -lm $(OS_CCDEFS) -I .
+CC += ${CFLAGS} -lm $(OS_CCDEFS) -I .
 ifeq ($(USE_NETWORK),)
 else
 NETWORK_OPT = -DUSE_NETWORK -isystem /usr/local/include /usr/local/lib/libpcap.a