GNU bug report logs - #61782
About some warning building Emacs master on MSYS2/MINGW64 [autogen, configure]

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Angelo Graziosi <angelo.g0 <at> libero.it>
To: "bug-gnu-emacs <at> gnu.org" <bug-gnu-emacs <at> gnu.org>
Subject: About some warning building Emacs master on MSYS2/MINGW64 [autogen,
 configure]
Date: Sat, 25 Feb 2023 09:45:56 +0100 (CET)

I noticed that building Emacs (master) on Windows with MSYS2/MINGW64 now shows these warnings

$ ./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'.

./configure
[...]
checking for xattr library with ATTR_ACTION_PERMISSIONS... no
configure: WARNING: libattr development library was not found or not usable.
configure: WARNING: GNU Emacs will be built without xattr support.
checking whether readlink signature is correct... yes
[...]

I wonder if they are to be expected and if we can do something to avoid them.

Thanks,
 Angelo.

Message #8 received at 61782 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Angelo Graziosi <angelo.g0 <at> libero.it>, Paul Eggert <eggert <at> cs.ucla.edu>
Cc: 61782 <at> debbugs.gnu.org
Subject: Re: bug#61782: About some warning building Emacs master on
 MSYS2/MINGW64 [autogen, configure]
Date: Sat, 25 Feb 2023 11:49:39 +0200

> Date: Sat, 25 Feb 2023 09:45:56 +0100 (CET)
> From: Angelo Graziosi <angelo.g0 <at> libero.it>
> 
> I noticed that building Emacs (master) on Windows with MSYS2/MINGW64 now shows these warnings
> 
> $ ./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'.
> 
> ./configure
> [...]
> checking for xattr library with ATTR_ACTION_PERMISSIONS... no
> configure: WARNING: libattr development library was not found or not usable.
> configure: WARNING: GNU Emacs will be built without xattr support.
> checking whether readlink signature is correct... yes
> [...]
> 
> I wonder if they are to be expected and if we can do something to avoid them.

The first one doesn't happen here.

The second one is due to m4/xattr.m4.  Paul, this test should not be
run on MS-Windows (although running it is mostly harmless), as xattr
will not be supported there.

Message #11 received at 61782 <at> debbugs.gnu.org (full text, mbox):

From: Angelo Graziosi <angelo.g0 <at> libero.it>
To: Eli Zaretskii <eliz <at> gnu.org>, Paul Eggert <eggert <at> cs.ucla.edu>
Cc: 61782 <at> debbugs.gnu.org
Subject: Re: bug#61782: About some warning building Emacs master on
 MSYS2/MINGW64 [autogen, configure]
Date: Sat, 25 Feb 2023 17:51:21 +0100 (CET)

> Il 25/02/2023 10:49 Eli Zaretskii ha scritto:
> 
> The first one doesn't happen here.
>

Are you using MSYS2/MINGW64? It occurs in the build I did on Feb. 04 but not on the one I did on Jan. 01. My installation is updated daily..

Thanks.

Message #14 received at 61782 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Angelo Graziosi <angelo.g0 <at> libero.it>
Cc: 61782 <at> debbugs.gnu.org, eggert <at> cs.ucla.edu
Subject: Re: bug#61782: About some warning building Emacs master on
 MSYS2/MINGW64 [autogen, configure]
Date: Sat, 25 Feb 2023 19:17:52 +0200

> Date: Sat, 25 Feb 2023 17:51:21 +0100 (CET)
> From: Angelo Graziosi <angelo.g0 <at> libero.it>
> Cc: 61782 <at> debbugs.gnu.org
> 
> 
> > Il 25/02/2023 10:49 Eli Zaretskii ha scritto:
> > 
> > The first one doesn't happen here.
> >
> 
> Are you using MSYS2/MINGW64?

No, I'm using MSYS and MinGW.  I guess your autoconf version is newer
or something.  Curiously, I cannot find anything about this warning on
the net.

> It occurs in the build I did on Feb. 04 but not on the one I did on Jan. 01. My installation is updated daily..

I never update my installation unless strictly necessary.  Keeps me
sane.

Message #17 received at 61782 <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Eli Zaretskii <eliz <at> gnu.org>, Angelo Graziosi <angelo.g0 <at> libero.it>
Cc: 61782 <at> debbugs.gnu.org
Subject: Re: bug#61782: About some warning building Emacs master on
 MSYS2/MINGW64 [autogen, configure]
Date: Sat, 25 Feb 2023 15:38:38 -0800

[Message part 1 (text/plain, inline)]

On 2023-02-25 01:49, Eli Zaretskii wrote:

> The second one is due to m4/xattr.m4.  Paul, this test should not be
> run on MS-Windows (although running it is mostly harmless), as xattr
> will not be supported there.

Perhaps something like the attached untested patch? Please feel free to 
install it if it works.

[xattr.diff (text/x-patch, attachment)]

Message #22 received at 61782-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: 61782-done <at> debbugs.gnu.org, angelo.g0 <at> libero.it
Subject: Re: bug#61782: About some warning building Emacs master on
 MSYS2/MINGW64 [autogen, configure]
Date: Sun, 26 Feb 2023 08:56:38 +0200

> Date: Sat, 25 Feb 2023 15:38:38 -0800
> Cc: 61782 <at> debbugs.gnu.org
> From: Paul Eggert <eggert <at> cs.ucla.edu>
> 
> On 2023-02-25 01:49, Eli Zaretskii wrote:
> 
> > The second one is due to m4/xattr.m4.  Paul, this test should not be
> > run on MS-Windows (although running it is mostly harmless), as xattr
> > will not be supported there.
> 
> Perhaps something like the attached untested patch? Please feel free to 
> install it if it works.

Thanks, installed.

Message #25 received at 61782 <at> debbugs.gnu.org (full text, mbox):

From: Angelo Graziosi <angelo.g0 <at> libero.it>
To: Eli Zaretskii <eliz <at> gnu.org>, Paul Eggert <eggert <at> cs.ucla.edu>
Cc: 61782 <at> debbugs.gnu.org
Subject: Re: bug#61782: About some warning building Emacs master on
 MSYS2/MINGW64 [autogen, configure]
Date: Sun, 26 Feb 2023 22:34:35 +0100 (CET)

> Il 25/02/2023 10:49 Eli Zaretskii ha scritto:
> 
> > From: Angelo Graziosi
> > 
> > I noticed that building Emacs (master) on Windows with MSYS2/MINGW64 now shows these warnings
> > 
> > $ ./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

Message #28 received at 61782 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: eggert <at> cs.ucla.edu, Angelo Graziosi <angelo.g0 <at> libero.it>
Cc: 61782 <at> debbugs.gnu.org
Subject: Re: bug#61782: About some warning building Emacs master on
 MSYS2/MINGW64 [autogen, configure]
Date: Mon, 27 Feb 2023 13:13:14 +0200

> Date: Sun, 26 Feb 2023 22:34:35 +0100 (CET)
> From: Angelo Graziosi <angelo.g0 <at> libero.it>
> Cc: 61782 <at> 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.

Thanks.

Message #31 received at 61782 <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Eli Zaretskii <eliz <at> gnu.org>, Angelo Graziosi <angelo.g0 <at> libero.it>
Cc: 61782 <at> debbugs.gnu.org, Sam James <sam <at> gentoo.org>
Subject: Re: bug#61782: About some warning building Emacs master on
 MSYS2/MINGW64 [autogen, configure]
Date: Mon, 27 Feb 2023 12:41:25 -0800

On 2/27/23 03:13, Eli Zaretskii wrote:
>> Date: Sun, 26 Feb 2023 22:34:35 +0100 (CET)
>> From: Angelo Graziosi <angelo.g0 <at> libero.it>
>> Cc: 61782 <at> 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>.

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