RFC: parallelize "make check"

[Tom Tromey]

>>>>> "Joel" == Joel Brobecker <brobecker@adacore.com> writes:

Joel> This looks awesome. If I understand your patch correctly,
Joel> parallelization is active by default when one does "make -j6 check"
Joel> as you split the "check" target into multiple sub targets.
Joel> If one does a regular "make check" without the -j, then the sub
Joel> targets will simply be run in sequence.

Yeah, that's right.

Joel> Thanks for doing this. At this rate, I don't think you'll be able
Joel> to remain sober at the next GCC Summit :). (Editor's note: Daniel
Joel> and now myself promised Tom a drink for various very useful patches
Joel> that he wrote).

:)

Though in this case I took the idea, if not the implementation, from
Jakub's similar patch to GCC.

Tom