https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120586
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- > --with-newlib You can't use that and then use glibc to build libstdc++. If you are building libstdc++ for the second stage, you should not have ` --with-newlib --without-headers`