--- Makefile.orig	2006-04-10 11:06:56.000000000 -0700
+++ Makefile	2007-05-19 19:36:08.000000000 -0700
@@ -4,6 +4,8 @@
 TAPE=/dev/ntape
 DATE=`date +"%d%m%Y"`
 
+DESTDIR=
+
 include makedefs.src
 
 include objdefs.unix
@@ -71,7 +73,7 @@
 	cd tests; ./testall $(TESTDIRS)
 
 install: $(ALLTARGETS)
-	PREFIX=$(PREFIX) ./install.sh $(BINDIR) $(INCDIR) $(MANDIR) $(LIBDIR) $(DOCDIR)
+	PREFIX=$(PREFIX) ./install.sh $(DESTDIR)$(BINDIR) $(DESTDIR)$(INCDIR) $(DESTDIR)$(MANDIR) $(DESTDIR)$(LIBDIR) $(DOCDIR)
 
 clean:
 	rm -f $(ALLTARGETS) $(RESCOMPTARGET) $(TEX2DOCTARGET) $(TEX2HTMLTARGET) *$(HOST_OBJEXTENSION) *$(TARG_OBJEXTENSION) *.p *.rsc tests/testlog testlog