--- Makefile.orig	Sun Jan 23 15:00:51 2000
+++ Makefile	Sun Jan 23 15:00:56 2000
@@ -3,7 +3,7 @@
 # Date created:		13 January 2000
 # Whom:			Bill Ross <bross@nas.nasa.gov> <ross@cgl.ucsf.edu>
 #
-CC=	cc
+CC?=	cc
 
 all:		libavltree.a