[Bug build/31958] New: aclocal.m4:6: error: Exactly version 2.72 of Autoconf is required but you have 2.71

[Bug build/31958] New: aclocal.m4:6: error: Exactly version 2.72 of Autoconf is required but you have 2.71

[skpgkp2 at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=31958

            Bug ID: 31958
           Summary: aclocal.m4:6: error: Exactly version 2.72 of Autoconf
                    is required but you have 2.71
           Product: glibc
           Version: 2.40
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: build
          Assignee: unassigned at sourceware dot org
          Reporter: skpgkp2 at gmail dot com
                CC: carlos at redhat dot com
  Target Milestone: ---

This issue appear on Fedora 40, which has autoconf version 2.71 but glibc
master moved to 2.72. Following are error message.

$ autoconf configure.ac
aclocal.m4:6: error: Exactly version 2.72 of Autoconf is required but you have
2.71 
aclocal.m4:6: the top level
autom4te: error: /usr/bin/m4 failed with exit status: 63

Introduced by following patch.

commit 98ffc1bfeb04fb04b7f18f1cbfccf1e43d6a867f
Author: Andreas K. Hüttel <dilfridge@gentoo.org>
Date:   Tue Jun 11 23:34:54 2024 +0200

    Convert to autoconf 2.72 (vanilla release, no distribution patches)

Any workaround?

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[Bug build/31958] aclocal.m4:6: error: Exactly version 2.72 of Autoconf is required but you have 2.71

[skpgkp2 at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=31958

--- Comment #1 from Sunil Pandey <skpgkp2 at gmail dot com> ---
Removed this patch from my local workspace and autoconf works fine. Just
wondering if there is any better method to deal with this situation.

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[Bug build/31958] aclocal.m4:6: error: Exactly version 2.72 of Autoconf is required but you have 2.71

[sam at gentoo dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=31958

Sam James <sam at gentoo dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sam at gentoo dot org

--- Comment #2 from Sam James <sam at gentoo dot org> ---
This would've been a proven if autoconf in Fedora was upgraded too, it just
happened on "this side" instead.

I'd really just say either ask them to package individual autoconf versions (we
do it in Gentoo, you can make their files not conflict easily) or just build
autoconf manually in a custom prefix like /opt/gnu or whatever.

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