turing.mk

# -*- Makefile -*- vim: ft=Makefile
# This expects to be built with make -f 

H Ha Hb Hc: 
	echo halted

define Nr
$(foreach post,a b c,$(eval $(call Nr0,$(1),$(2),$(post))))
endef

define Nr0
H$(1)$(post)%:
	make -f $(MF) H$$*$(2)
H$(1)$(post):
	make -f $(MF) H$(2)
endef

#          a  -->  bc
#          b  -->  a
#          c  -->  aaa

$(call Nr,a,bc)
$(call Nr,b,a)
$(call Nr,c,aaa)