--- Makefile.orig	Mon Feb 10 09:17:51 2003
+++ Makefile	Tue Dec 16 23:22:42 2003
@@ -8,9 +8,9 @@
 # for IBM RS6000
 #CC=xlc
 #CFLAGS=-O
-BIN=/usr/local/bin
-X11INCLUDEDIR=/usr/include/X11R6
-X11LIBDIR=/usr/lib/X11R6
+BIN=$(PREFIX)/bin
+X11INCLUDEDIR=$(X11BASE)/include
+X11LIBDIR=$(X11BASE)/lib
 X11LIB= -L$(X11LIBDIR)  -lX11
 MATHLIB=  -lm