libwhenjobsdir = $(libdir)/$(PACKAGE_NAME)
libwhenjobs_SCRIPTS = whenlib.cma pa_when.cmo
-OCAMLPACKAGES = -package unix,num,camlp4.lib,rpc
+OCAMLPACKAGES = -package unix,num,camlp4.lib,calendar,rpc
OCAMLCFLAGS = -g -warn-error CDEFLMPSUVYZX $(OCAMLPACKAGES)
OCAMLOPTFLAGS = $(OCAMLCFLAGS)