--- Makemakefile.orig	Mon Jan 30 18:26:23 1995
+++ Makemakefile	Sun Jun 22 05:33:20 1997
@@ -54,7 +54,7 @@
 test -z "$CC" && CC="cc"
 if test -z "$CFLAGS"; then
   if [ $CC = gcc ] ; then
-    CFLAGS="-O2 -g -ansi" # may use up to -O4 except for plotsun.c
+    CFLAGS="-O2 -ansi" # may use up to -O4 except for plotsun.c
   else
     if [ $TARGET = hppa ] ; then
       CFLAGS="-O -Aa"
@@ -167,7 +167,7 @@
 
 # Change these installation directories to suit your needs
 
-PREFIX = /usr/local
+PREFIX?= /usr/local
 LIBDIR = \$(PREFIX)/lib
 BINDIR = \$(PREFIX)/bin
 MANDIR = \$(PREFIX)/man
@@ -175,7 +175,7 @@
 
 CC = ${CC}
 CFLAGS = ${CFLAGS}
-LIBS = -lm
+LIBS = -lm -lcompat
 LFLAGS =
 
 # You can (if you want to debug gp yourself) add the ${DEBUGOPTION} option
@@ -221,8 +221,8 @@
 cat >> Makefile  <<!!
 # plotting in X windows:
 PLOTFILE = plotX.c
-PLOTCFLAGS = -I/usr/openwin/share/include
-PLOTLIBS = ${XLIBOPTION} -lX11
+PLOTCFLAGS = -I/usr/X11R6/include
+PLOTLIBS = ${XLIBOPTION} -L/usr/X11R6/lib -lX11
 
 # Choose whether you want the readline input facilities:
 GPMAIN = gp.o
