Dear maintainer,

your package has an autopkgtest regression with CMake 4, caused by
the removal of deprecated backwards compatibility settings.

You can find more information in my debian-devel announcement:
https://lists.debian.org/debian-devel/2025/04/msg00310.html


Hopefully relevant excerpt from
https://ci.debian.net/packages/d/double-conversion/unstable/amd64/64721192/
follows:

 41s CMake Warning (dev) at CMakeLists.txt:1 (project):
 41s   cmake_minimum_required() should be called prior to this top-level project()
 41s   call.  Please see the cmake-commands(7) manual for usage documentation of
 41s   both commands.
 41s This warning is for project developers.  Use -Wno-dev to suppress it.
 41s
 41s -- The CXX compiler identification is GNU 15.2.0
 41s -- Detecting CXX compiler ABI info
 41s -- Detecting CXX compiler ABI info - done
 41s -- Check for working CXX compiler: /usr/bin/c++ - skipped
 41s -- Detecting CXX compile features
 41s -- Detecting CXX compile features - done
 41s CMake Error in CMakeLists.txt:
 41s   No cmake_minimum_required command is present.  A line of code such as
 41s
 41s     cmake_minimum_required(VERSION 4.1)
 41s
 41s   should be added at the top of the file.  The version specified may be lower
 41s   if you wish to support older CMake versions for this project.  For more
 41s   information run "cmake --help-policy CMP0000".
 41s
 41s
 41s -- Configuring incomplete, errors occurred!


Cheers
Timo
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We believe that the bug you reported is fixed in the latest version of
double-conversion, 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 1116507@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Dominique Belhachemi <domibel@debian.org> (supplier of updated double-conversion 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: Tue, 07 Oct 2025 22:48:54 -0400
Source: double-conversion
Architecture: source
Version: 3.3.1-2
Distribution: unstable
Urgency: medium
Maintainer: Debian Science Team <debian-science-maintainers@lists.alioth.debian.org>
Changed-By: Dominique Belhachemi <domibel@debian.org>
Closes: 1116507
Changes:
 double-conversion (3.3.1-2) unstable; urgency=medium
 .
   * Team upload.
   * Fix autopkgtest regression with CMake 4. (Closes: #1116507)
   * Bump Standards-Version to 4.7.2 (no change needed).
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 8ee554c7a9a97ab09b2136813a76e5c1b1bc9496 8856 double-conversion_3.3.1-2.debian.tar.xz
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