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.