https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116730
--- Comment #37 from Jonathan Wakely <redi at gcc dot gnu.org> --- I still can't reproduce any error with: ../../configure --prefix=/tmp/install --enable-languages=c++ make -j10 make install So I'm not going to spend any more time on this. If it doesn't work for you, just stop building in a sub-dir of the source tree.