Note: help and version output are generated by a naïve script which tries a few variants of
<command> --help, <command> -h etc. to find the command's help and version info.
Sometimes it gets lucky, sometimes it doesn't; if the output below looks wrong, it probably is.
make-first-existing-target -V (return code: 2)
make-first-existing-target: *** No rules to make targets: version
make-first-existing-target --help (return code: 1)
usage: make-first-existing-target [-c cmd] target1 [target2 ...] -- [make-options]