[Bug bootstrap/100186] lto-wrapper.c assumes std::thread

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100186

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
And opinions differ on whether "define it but make it useless" or "don't define
it" is the right answer.