bug#29731: configure to distinguish makeinfo present-but-broken from missing-or-old

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Fri, 13 Aug 2021 15:40:31 +0200
> Cc: Mutiny <mutiny.mutiny@rediffmail.com>, 29731@debbugs.gnu.org
> 
> Robert Pluim <rpluim@gmail.com> writes:
> 
> > No. Some of the admin scripts do, but theyʼre not required to build
> > emacs. makeinfo requires perl last time I checked.
> 
> Aha.  Hm.  Oh, Glenn had renamed this to:
> 
> retitle 29731 configure to distinguish makeinfo present-but-broken from 
> missing-or-old
> 
> Which is, I guess, the correct description here.  So makeinfo didn't
> work for the user because Perl was b0rked, but ./configure says that the
> user didn't have makeinfo.
> 
> I guess that should be possible to distinguish...

It would be nice to have that, but basically it isn't our problem,
IMO: building a tarball doesn't require makeinfo, while people who
build from Git should IMO be expected to have a working Texinfo
installation, which includes Perl modules necessary to run makeinfo.