michael@0: # -@- Mode: Makefile -@- 
michael@0: 
michael@0: unexport VAR1
michael@0: 
michael@0: all:
michael@0: 	env
michael@0: 	test "$(VAR1)" = "val1"
michael@0: 	test "$(origin VAR1)" = "environment"
michael@0: 	test "$(VAR2)" = "" # VAR2
michael@0: 	test "$(VAR3)" = "val3"
michael@0: 	test "$(ENVVAR)" = ""
michael@0: 	$(MAKE) -f $(TESTPATH)/unexport.submk subt
michael@0: 
michael@0: subt:
michael@0: 	test "$(VAR1)" = ""