https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127807
--- Comment #1 from Sam James <sjames at gcc dot gnu.org> --- On the other hand, the submake does understand it is a jobserver client in that else branch, just each of them has check_$*_parallelize=. Maybe that's even worse because it doesn't then try to combine logs? I need to understand how the parallelism works here for runtest.
