https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106328
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Hmm: https://gcc.gnu.org/onlinedocs/gcc-10.4.0/gcc/Optimize-Options.html#index-flto Maybe the automation detection of job server is not working on freebsd correctly.