--- makefile.orig	2013-02-19 10:47:01.000000000 +0100
+++ makefile	2013-02-19 10:47:23.000000000 +0100
@@ -18,6 +18,34 @@
 		show.o \
 		token.o
 
+
+EXAMPLE_SRC = \
+	acc.jgr \
+	ad.jgr \
+	alb.jgr \
+	bailey.jgr \
+	cube.jgr \
+	disk.jgr \
+	ebars.jgr \
+	ex1.jgr \
+	ex2.jgr \
+	data.txt \
+	g8.jgr \
+	g8col.jgr \
+	g9n10.jgr \
+	gpaper.jgr \
+	hypercube.jgr \
+	mab2.jgr \
+	mab2.times \
+	nr.jgr \
+	sin.pts \
+	sin1.jgr \
+	sin2.pts \
+	sin2.jgr \
+	sin3.pts \
+	sin3.jgr \
+	wortman.jgr
+
 EXAMPLES = \
 	acc.jps		\
 	acc.eps		\
@@ -58,15 +86,21 @@
 .tex.dvi:
 	latex $*.tex
 .c.o: 
-	$(CC)  -c -g $*.c
+	$(CC) -c $(CFLAGS) $*.c
 
 
 jgraph: $(OBJS)
-	$(CC) -g $(OBJS) -lm -o jgraph
+	$(CC) $(CFLAGS) $(OBJS) -lm -o jgraph
 
 sin:	sin.o
 	cc -o sin sin.o -lm
 
+install: jgraph
+	install -c -m 555 -o bin -g bin jgraph ${PREFIX}/bin
+	install -c -m 444 -o bin -g bin jgraph.1 ${PREFIX}/man/man1
+	-mkdir -p -m 755 ${DATADIR}
+	install -c -m 444 -o bin -g bin $(EXAMPLE_SRC) ${DATADIR}
+
 ad.jps: cube.eps disk.eps
 bailey.jps: bailey.pts
 ex2.jps: data.txt