https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86450
--- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Thomas Koenig from comment #9) > (In reply to Jonathan Wakely from comment #7) > > These warnings have been present for weeks - the idea that they're suddenly > > preventing anybody from working on gfortran is odd. Why can't you use > > autoconf or autoreconf like everybody else? > > It is odd that somebody who apparently does not know gfortran > comes to such a judgement without knowing the details. > > Hint: Regenerating m4 files in libgfortran. Hint: maintainer mode is not magic, whatever it does can be done manually too. And does --disable-werror help?