[Octave-bug-tracker] [bug #62408] strange errors when running "bootstrap" script

[Markus Mützel]

Follow-up Comment #5, bug #62408 (project octave):

Sorry, I misunderstoof. I thought that `m4/acinclude.m4` would be "included"
in the `configure` script. It is *not* included in the `bootstrap` script.
Because editing `m4/acinclude.m4` avoided the error, I thought that meant that
it was emitted by the `configure` script.

However, the `bootstrap` script creates the `configure` script from
`configure.ac` using those autom4te modules.
The `gl_PROG_BISON` module was added to gnulib in May 2020:
https://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=6c71b2c51bc633f230054d9496d6bb2f0c1d4874

Octave updated to a newer version than that before the release of version
6.1.0:
https://hg.savannah.gnu.org/hgweb/octave/rev/7b819cd7ff54

I'm guessing now that the gnulib Git repository didn't get updated correctly
for you by the `bootstrap` script for some reason and that repository was
still pretty old. Do you have an idea why that could be?

Was the source tree *very* old? A couple of years ago, Octave hosted its own
gnulib clone and included it as a Mercurial subrepository. Now, we are letting
the `bootstrap` script fetch the upstream Git repository instead. Maybe, that
could fail if the Mercurial subdirectory wasn't deleted in the local
checkout...



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