> # The StackOverflow answer also demonstrates a simpler solution
> # (using the new `&:` operator instead of `:`), available since
> # the release of GNU make 4.3 in January 2020. Alas, at the
> # time of this writing (February 2022) this version is still too
> # new to be universally available.
>
> https://gitlab.com/lilypond/lilypond/-/blob/d4efa89f2600a71bc68a48ea84fd4f04eaa14734/Documentation/tex/GNUmakefile?plain=1#L31-L34
>
> https://www.gnu.org/software/make/manual/html_node/Multiple-Targets.html
>
> How will we know when it is reasonable to use `&:`?
I guess we can expect that all major distributions support 4.3 now.
Werner
