https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89864
--- Comment #58 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > No such file or directory > 31 | #include <filesystem> > | ^~~~~~~~~~~~ > compilation terminated. I think this is an older issue (on SSD?) for which there is already a filed PR. When I hit this snag, I just resume the bootstrap process.