-UTF8DIR := $(shell $(OCAMLFIND) query helm-utf8_macros)
-ULEXDIR := $(shell $(OCAMLFIND) query ulex)
-MY_SYNTAXOPTIONS = -pp "camlp4o -I $(UTF8DIR) -I $(ULEXDIR) pa_extend.cmo pa_ulex.cma pa_unicode_macro.cma -loc loc"
+UTF8DIR := $(shell $(OCAMLFIND) query helm-syntax_extensions)
+ULEXDIR := $(shell $(OCAMLFIND) query ulex08)
+MY_SYNTAXOPTIONS = -pp "camlp5o -I $(UTF8DIR) -I $(ULEXDIR) pa_extend.cmo pa_ulex.cma pa_unicode_macro.cma -loc loc"