Cited from make
"-f makefile
Use the description file makefile. If the pathname is the dash character (-), the standard input is used. If there are multiple instances of this option, they are processed in the order specified."
For example,
make -f- FOO=bar <<< 'goal:;@echo $(MAKECMDGOALS)'
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Cited from Variables and Macros
'The stdin is redirected from a command-line string using bash's
here string, “<<<”, syntax.'
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