--- tools/pxp-engine/Makefile.orig	Thu Jan 15 10:28:06 2004
+++ tools/pxp-engine/Makefile	Thu Jan 15 10:28:17 2004
@@ -26,7 +26,7 @@
 #generate: pxp_yacc.ml pxp_lexing.ml
 
 pxp_lexing.ml: pxp_lexing.mlp
-	ifdef -D LEXBUF_$(OCAMLVERSION) pxp_lexing.mlp
+	./ifdef -D LEXBUF_$(OCAMLVERSION) pxp_lexing.mlp
 
 depend: 
 	$(OCAMLDEP) *.ml *.mli >depend