$NetBSD$

--- Makefile.orig	2002-06-05 02:07:50.000000000 +0000
+++ Makefile
@@ -1,4 +1,4 @@
-PREFIX=/usr/local
+PREFIX?=/usr/local
 BINDIR=${PREFIX}/bin
 MANDIR=${PREFIX}/man
 DATADIR=${PREFIX}/share/rig
@@ -11,10 +11,10 @@ rig.6: rig.6.in
 	sed s@DATADIR@"$(DATADIR)"@g < rig.6.in > rig.6
 
 install: rig rig.6
-	install -g 0 -m 755 -o 0 -s rig $(BINDIR)
-	install -g 0 -m 644 -o 0 rig.6 $(MANDIR)/man6/rig.6
-	install -g 0 -m 755 -o 0 -d $(DATADIR)
-	install -g 0 -m 644 -o 0 data/*.idx $(DATADIR)
+	install -g 0 -m 755 -o 0 -s rig $(DESTDIR)$(BINDIR)
+	install -g 0 -m 644 -o 0 rig.6 $(DESTDIR)$(MANDIR)/man6/rig.6
+	install -g 0 -m 755 -o 0 -d $(DESTDIR)$(DATADIR)
+	install -g 0 -m 644 -o 0 data/*.idx $(DESTDIR)$(DATADIR)
 
 clean:
 	rm -rf *~ *.rej *.orig *.o rig rig.6