CLEANFILES = *~ *.cmi *.cmo *.cmx *.cma *.cmxa *.o
-OCAMLCFLAGS = -g -warn-error CDEFLMPSUVYZX
-OCAMLCPACKAGES = -package unix -I $(top_builddir)
+OCAMLCFLAGS = -g -warn-error CDEFLMPSUVYZX-3
+OCAMLCPACKAGES = -package unix,calendar -I $(top_builddir)
OCAMLOPTFLAGS = $(OCAMLCFLAGS)
OCAMLOPTPACKAGES = $(OCAMLCPACKAGES)