https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111390
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> --- I think what you're describing or looking for is something completely different, which might be useful but is not what is present today. The libstdc++-v3/scripts/check_compile script cannot be turned into what you're describing. There's simply no way to get to what you want from a naive shell script that isn't parallelized, and doesn't understand the dg-* directives in the tests, and only supports a single -std option for all tests. What we have today is not useful. A replacement would have to be written from scratch anyway, so ripping it out entirely has no downside as far as I can see.
