--- ocaml-cairo-1.2.0/Makefile.rules~	2011-09-11 16:09:06.000000000 +0100
+++ ocaml-cairo-1.2.0/Makefile.rules	2013-09-14 14:51:18.682632883 +0100
@@ -1,8 +1,8 @@
 %.cmo : %.ml
-	$(OCAMLC) -c $(INCFLAGS) $<
+	$(OCAMLC) -g -c $(INCFLAGS) $<
 %.cmx : %.ml
-	$(OCAMLOPT) -c $(INCFLAGS) $<
+	$(OCAMLOPT) -g -c $(INCFLAGS) $<
 %.cmi : %.mli
-	$(OCAMLC) $(INCFLAGS) $<
+	$(OCAMLC) -g $(INCFLAGS) $<
 %.o : %.c
 	$(OCAMLC) -ccopt "$(CPPFLAGS)" $<