https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121272
--- Comment #5 from Tomasz KamiĆski <tkaminsk at gcc dot gnu.org> --- When I got error, I used simply: ~/src/gcc/configure --prefix=${HOME}/gcc/16 --enable-languages=c,c++ --enable-libstdcxx-debug Now I added --disable-werror, to move with build.