make ... file

Makefile

ifndef (${BAZ})
  BAZ := "/baa"
endif

FOO := "blabalabl"

vvvv:
	@echo "${BAZ} ${FOO} asdiajsd"

foo.text: BLA=bla
foo.text:
	@echo ${BAZ}
	@echo ${BLA}
	@echo "I like turtles" > foo.txt

bar.text: foo.text
	@echo ${FOO}
	@echo "I like pie" > bar.txt

baz.text: bar.text
	@cat foo.txt bar.txt > baz.txt
	@echo "I am like php but worse"