--- xmlp4/oldocaml/Makefile.orig	Thu Mar 15 12:27:52 2007
+++ xmlp4/oldocaml/Makefile	Mon Apr 23 10:19:55 2007
@@ -13,7 +13,7 @@
 CAMLOPT = $(OCAMLFIND) ocamlopt $(DBG) $(LIB)
 CAMLDEP = $(OCAMLFIND) ocamldep
 LIB = -I `$(CAMLP4) -where` -I ../../lib
-PP = -pp "camlp4o pa_extend.cmo q_MLast.cmo -- -loc loc"
+PP = -pp "$(CAMLP4O) pa_extend.cmo q_MLast.cmo -- -loc loc"
 PPLEXER = -pp "camlp4r -- -loc loc"
 
 SRCLIBREP = ../../lib