https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82856
Thomas Koenig <tkoenig at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2017-11-07 Summary|[8 Regression] |--enable-maintainter-mode |--enable-maintainter-mode |broken by incompatiblity of |broken by automake failure |gcc's required automake and | |modern Perl Ever confirmed|0 |1 --- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> --- It seems that automake 1.15.1 fixed the issue. This is not really a regression, it is just relying on an old version finally started to break things. So, it seems it is finally time to update all the auto* tools for gcc. I don't think using a hand-patched version like in comment #3 is really an option.