$(error "need a make config first")
endif
-DEPDIR_FILES = $(addsuffix /.depdirs, $(addprefix $(BUILDDIR)/,$(ROOTDIRS-y)))
+DEPDIR_FILES = $(addsuffix /.depdirs, $(addprefix $(BUILDDIR)/,$(ROOTDIRS-y) $(ROOTDIRS-)))
.PHONY: depdirs
depdirs: $(RTE_OUTPUT)/.depdirs