def METHOD_NAME(conf):
	'''
	Check if doxygen and tar commands are present in the system
	If the commands are present, then conf.env.DOXYGEN and conf.env.TAR
	variables will be set. Detection can be controlled by setting DOXYGEN and
	TAR environmental variables.
	'''
	conf.find_program('doxygen', var='DOXYGEN', mandatory=False)
	conf.find_program('tar', var='TAR', mandatory=False)