ifneq (,$(findstring vtimer,$(USEMODULE)))
	ifeq (,$(findstring hwtimer,$(USEMODULE)))
		USEMODULE += hwtimer
	endif
	ifeq (,$(findstring timex,$(USEMODULE)))
		USEMODULE += timex
	endif
endif

ifneq (,$(findstring uart0,$(USEMODULE)))
	ifeq (,$(findstring lib,$(USEMODULE)))
		USEMODULE += lib	
	endif
endif

ifneq (,$(findstring cc110x_ng,$(USEMODULE)))
	ifeq (,$(findstring transceiver,$(USEMODULE)))
		USEMODULE += transceiver
	endif
	ifeq (,$(findstring hwtimer,$(USEMODULE)))
		USEMODULE += hwtimer
	endif
endif