[Bug bootstrap/82856] [8 Regression] --enable-maintainter-mode broken by automake failure

[tkoenig at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82856

--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #1)
> Likely all active branches are affected and it's likely not a regression.
> 
> Can you quickly figure what automake version fixed this?

Unfortunately not. Trying to build automake with anything
larger than 11 runs into

  GEN      doc/automake-1.13.1
help2man: can't get `--help' info from automake-1.13
Try `--no-discard-stderr' if option outputs to stderr
make: *** [Makefile:4278: doc/automake-1.13.1] Fehler 255

The system-supplied automake 15 works.