--- Makefile.orig	Fri Sep  4 07:58:45 1992
+++ Makefile	Thu Aug 10 21:31:05 2000
@@ -1,9 +1,9 @@
 # Makefile for 4va.
 # Please send questions or bugs to mdw1@crux2.cit.cornell.edu
 
-CC = cc
-CLIBS = -lm -lX11
-CFLAGS = -O 
+CC ?= cc
+CLIBS = -lm -lX11 -L${X11BASE}/lib
+CFLAGS += -I${X11BASE}/include
 
 
 all: 4va ctorus cutctorus 4vdmake