1
 2all: ; @$(MAKE) -f t013.mk recurse
 3
 4recurse: one two ; @testhelp out $@
 5one: ;@ testhelp wait TWO file ONE
 6two: ;@ testhelp file TWO
 7
 8mkinclude: ; touch fff1.mk
 9
10ifeq ($(MAKECMDGOALS),recurse)
11include fff1.mk
12fff1.mk: ; @$(MAKE) -f t013.mk mkinclude
13endif