--- Makefile.orig	1999-08-01 07:11:01.000000000 +0930
+++ Makefile	2014-05-11 14:46:32.794473751 +0930
@@ -60,7 +60,7 @@
 	cd tests; ./testall
 
 install: $(ALLTARGETS)
-	./install.sh $(BINDIR) $(INCDIR) $(MANDIR) $(LIBDIR) $(DOCDIR)
+	./install.sh $(BINDIR) $(INCDIRINST) $(MANDIR) $(LIBDIRINST) $(DOCDIR)
 
 clean:
 	rm -f $(ALLTARGETS) $(RESCOMPTARGET) $(TEX2DOCTARGET) $(TEX2HTMLTARGET) *.$(OBJEXTENSION) *.p *.rsc tests/testlog