Hi,

gnome-common did a cleanup upstream and deprecated quite a few macros
and variables.

gnome-doc-utils removal
=======================
The gnome-doc-utils build infrastructure was removed completely along
with the following macros:

 GNOME_DOC_INIT [1]
 GNOME_COMMON_INIT [2]


deprecated variables
====================
The following variables used in gnome-autogen.sh have been declared
deprecated [3]:

 REQUIRED_GNOME_DOC_UTILS_VERSION
 REQUIRED_DOC_COMMON_VERSION
 USE_COMMON_DOC_BUILD
 FORBIDDEN_M4MACROS
 GNOME2_DIR
 GNOME2_PATH
 USE_GNOME2_MACROS

deprecated macros
=================
The following macros have also been declared deprecated:

 GNOME_COMPILE_WARNINGS [4]
 GNOME_CXX_WARNINGS [5]

Upstream has documentation at [6] with how you can fix your package and
why those particular changes were made.

According to codesearch.d.n your package curtain uses one of the macros or
variables so might be affected, especially once you run autoreconf. Please
update your package accordingly and forward it to upstream if possible.

If you have further question, please don't hesitate to ask.

Regards,
Michael

[1] https://git.gnome.org/browse/gnome-common/commit/?id=6684e2fa5
[2] https://git.gnome.org/browse/gnome-common/commit/?id=1f60e9536
[3] https://git.gnome.org/browse/gnome-common/commit/?id=4c8d8ad93
[4] https://git.gnome.org/browse/gnome-common/commit/?id=b57bae0be
[5] https://git.gnome.org/browse/gnome-common/commit/?id=2bffd7e1u
[6] https://wiki.gnome.org/Projects/GnomeCommon/Migration

We believe that the bug you reported is fixed in the latest version of
curtain, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 829915@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Andreas Tille <tille@debian.org> (supplier of updated curtain package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sun, 29 Dec 2024 09:23:50 +0100
Source: curtain
Architecture: source
Version: 0.3-2
Distribution: unstable
Urgency: medium
Maintainer: Andrea Colangelo <warp10@debian.org>
Changed-By: Andreas Tille <tille@debian.org>
Closes: 829915 1044569
Changes:
 curtain (0.3-2) unstable; urgency=medium
 .
   * Team upload.
 .
   [ Jelmer Vernooij ]
   * Migrate repository from alioth to salsa.
 .
   [ Barak A. Pearlmutter ]
   * Update autotools scripts (patch)
   * Bump debhelper compat level to 13.
   * Bump Standards-Version, no changes needed.
   * Harden
 .
   [ Andreas Tille ]
   * Point Homepage to Github
   * Add README.Debian explaining the relation to the ardesia project
   * Fix clean target
     Closes: #1044569
   * Use fake watch file
   * Move old-fashioned configure stuff out of the way and reconfigure from
     scratch
     Closes: #829915
   * Secure URI in copyright format (routine-update)
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