bug#70764: 29.1; M-x gdb: don't ask me about debuginfod server if debuginfod is not in context

[Rolf Ade]

Am 04.05.24 um 09:20 schrieb Eli Zaretskii:
> > From: Rolf Ade <rolf@pointsman.de>
> > Date: Sat, 04 May 2024 04:00:20 +0200
> >
> >
> > With 29.1 as well as with trunk(both tested with -Q) if I call M-x gdb I
> > get asked:
> >
> > "Enable querying debuginfod servers for this session? (y or n)"
> >
> > Even if I answer with "n" I get the message:
> >
> > "No symbol \"debuginfod\" in current context."
>
> I think this means your GDB is too old and doesn't support debug info
> downloading, or was built without that support.  We don't know how to
> know in advance that this is not supported, thus the user option that
> you can customize to avoid these questions if your GDB cannot use
> debuginfod.

I don't know if my gdb support debug info downloading (see exact version info 
below) but if I answer the question with "n" - I don't want to enable this - I 
wonder why I'm (only mildly, of course) bothered with a not very helpful error 
message.

> What OS are you using GDB on, and what is your GDB version, please?

This is basically a GNU/linux debian 11.9 (so, not that old). More specifically, 
uname -a:

Linux pointsman2 5.10.0-28-amd64 #1 SMP Debian 5.10.209-2 (2024-01-31) x86_64 
GNU/Linux

gdb --version (it's the version installed by the debian package management 
system):

GNU gdb (Debian 10.1-1.7) 10.1.90.20210103-git