bug#61782: About some warning building Emacs master on MSYS2/MINGW64 [autogen, configure]

[Paul Eggert]

On 2/27/23 03:13, Eli Zaretskii wrote:
> > Date: Sun, 26 Feb 2023 22:34:35 +0100 (CET)
> > From: Angelo Graziosi <angelo.g0@libero.it>
> > Cc: 61782@debbugs.gnu.org
> >
> > > > $ ./autogen.sh
> > > > [...]
> > > > Running 'autoreconf -fi -I m4' ...
> > > > ac-wrapper: autoreconf: warning: auto-detected versions not found ( ); falling 
> > > > back to latest available
> > > > You can now run './configure'.
> > >
> > > The first one doesn't happen here.
> >
> > For the sake of completeness, someone made a deep analysis of that warning: 
> > https://github.com/msys2/MSYS2-packages/issues/3588
>
> Thanks.
>
> Paul, is there something we should do about this nuisance?  I'm okay
> with doing nothing if what we have is a reasonable compromise.


I'd like to know why that warning is being given before trying to 
suppress it, as it could be a valid version-mismatch warning for that 
user's build configuration.

For what it's worth, I don't get the warning when running the latest 
autotools-wrappers on Fedora 37. I got my copy of autotools-wrappers 
from <https://gitweb.gentoo.org/proj/autotools-wrappers.git/> commit 
afe80def609c91d72df73837ce2c51fed8b69f28. Perhaps the user in question 
could try that version of autotools-wrappers.

I'll cc this to Sam James to see if he has any advice about this. Sam, 
the thread is in <https://bugs.gnu.org/61782>.