--- Makefile.orig	Sun Mar 27 19:10:21 2005
+++ Makefile	Sun Jan 18 16:21:02 2015
@@ -11,7 +11,7 @@ CFLAGS+= -Wsign-compare -g
 all: ipfreely
 
 ipfreely: ipfreely.c
-	cc $(CFLAGS) ipfreely.c -o ipfreely
+	${CC} $(CFLAGS) ipfreely.c -o ipfreely
 
 man: ipfreely.8
 	nroff -Tascii -mandoc ipfreely.8 > ipfreely.cat8