https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89466
--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> --- (In reply to Jonathan Wakely from comment #2) > Your xsltproc is broken, the --nonet option means it should not try to > download DTDs. So, the hyperlink can be safely removed or redirected to /dev/null?