I guess I should've been more clear. My point is other people /using/ your Makefile, not editing it. You know what you're running. You don't know what everyo

I guess I should've been more clear. My point is other people /using/ your Makefile, not editing it. You know what you're running. You don't know what everyone else is running. I've singled out ONESHELL because it will be silently ignored by non-GNU make, and it will behave ever so slightly different enough to cause extremely hard to find bugs. Example: .ONESHELL: sometarget: someinput ␉BASEDIR=other_expression ␉SHELLVAR=complicated_expression ␉rm -rf $$BASEDIR/$$SHELLVAR (obviously extreme to illustrate the point, but you get the idea.)