Bug#1113128: libclaw: FTBFS with CMake 4

roehling at debian.org roehling at debian.org
Sun Aug 31 23:57:43 BST 2025 

Source: libclaw
Version: 1.7.4-3
Severity: serious
User: cmake at packages.debian.org
Usertags: cmake-4
Tags: ftbfs, forky, sid

Dear maintainer,

During a test rebuild for CMake 4, libclaw failed to rebuild.

Log Summary:
-------------------------------------------------------------------------------
[...]
 libclaw-logger1t64 deb libs optional arch=any
 libclaw-net-dev deb libdevel optional arch=any
 libclaw-net1t64 deb libs optional arch=any
 libclaw-tween-dev deb libdevel optional arch=any
 libclaw-tween1t64 deb libs optional arch=any
Checksums-Sha1:
 1c11bd83bbdd8f191a204a90a148c860e25ae80b 341952 libclaw_1.7.4.orig.tar.gz
 38fdc14785014bac07285833e239f891532f888b 8720 libclaw_1.7.4-3.debian.tar.xz
Checksums-Sha256:
 0be289da7f43b1892575f14b27860af5d1e1f6961eae11653d64e625fd7924b7 341952 libclaw_1.7.4.orig.tar.gz
 c344a57af76d45fcedec1734f01cca70fdf24b369c55e41237509f5713c5db41 8720 libclaw_1.7.4-3.debian.tar.xz
Files:
 f27ed8936420abb8835d59f35a4101d9 341952 libclaw_1.7.4.orig.tar.gz
 89661a728226284b4fb164f94220e769 8720 libclaw_1.7.4-3.debian.tar.xz

-----BEGIN PGP SIGNATURE-----
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=XYLf
-----END PGP SIGNATURE-----

dpkg-source: warning: cannot verify inline signature for ./libclaw_1.7.4-3.dsc: no acceptable signature found
dpkg-source: info: extracting libclaw in /build/reproducible-path/libclaw-1.7.4
dpkg-source: info: unpacking libclaw_1.7.4.orig.tar.gz
dpkg-source: info: unpacking libclaw_1.7.4-3.debian.tar.xz
dpkg-source: info: using patch list from debian/patches/series
dpkg-source: info: applying html-doc-paths.diff
dpkg-source: info: applying spelling-errors.patch
dpkg-source: info: applying gcc6-ftbfs.patch
dpkg-source: info: applying boost1.61.patch
dpkg-source: info: applying gcc7.patch

Check disk space
----------------

Sufficient free space for build

User Environment
----------------

APT_CONFIG=/var/lib/sbuild/apt.conf
HOME=/sbuild-nonexistent
LANG=C.UTF-8
LC_ALL=C.UTF-8
LOGNAME=sbuild
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
SHELL=/bin/sh
USER=sbuild

dpkg-buildpackage
-----------------

Command: dpkg-buildpackage --sanitize-env -us -uc -b
dpkg-buildpackage: info: source package libclaw
dpkg-buildpackage: info: source version 1.7.4-3
dpkg-buildpackage: info: source distribution unstable
dpkg-buildpackage: info: source changed by Alexandre Detiste <tchet at debian.org>
 dpkg-source --before-build .
dpkg-buildpackage: info: host architecture arm64
 debian/rules clean
dh clean --buildsystem=cmake
   dh_auto_clean -O--buildsystem=cmake
   dh_autoreconf_clean -O--buildsystem=cmake
   debian/rules override_dh_clean
make[1]: Entering directory '/build/reproducible-path/libclaw-1.7.4'
rm -f debian/claw-config.1
dh_clean
make[1]: Leaving directory '/build/reproducible-path/libclaw-1.7.4'
 debian/rules binary
dh binary --buildsystem=cmake
   dh_update_autotools_config -O--buildsystem=cmake
   dh_autoreconf -O--buildsystem=cmake
   dh_auto_configure -O--buildsystem=cmake
	cd obj-aarch64-linux-gnu && DEB_PYTHON_INSTALL_LAYOUT=deb PKG_CONFIG=/usr/bin/pkg-config cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=None -DCMAKE_INSTALL_SYSCONFDIR=/etc -DCMAKE_INSTALL_LOCALSTATEDIR=/var -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=ON -DCMAKE_FIND_USE_PACKAGE_REGISTRY=OFF -DCMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY=ON -DFETCHCONTENT_FULLY_DISCONNECTED=ON -DCMAKE_INSTALL_RUNSTATEDIR=/run -DCMAKE_SKIP_INSTALL_ALL_DEPENDENCY=ON "-GUnix Makefiles" -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_INSTALL_LIBDIR=lib/aarch64-linux-gnu ..
CMake Error at CMakeLists.txt:1 (cmake_minimum_required):
  Compatibility with CMake < 3.5 has been removed from CMake.

  Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
  to tell CMake that the project requires at least <min> but has been updated
  to work with policies introduced by <max> or earlier.

  Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.


-- Configuring incomplete, errors occurred!
	cd obj-aarch64-linux-gnu && tail -v -n \+0 CMakeCache.txt
==> CMakeCache.txt <==
# This is the CMakeCache file.
# For build in directory: /build/reproducible-path/libclaw-1.7.4/obj-aarch64-linux-gnu
# It was generated by CMake: /usr/bin/cmake
# You can edit this file to change values found and used by cmake.
# If you do not want to change any of the values, simply exit the editor.
# If you do want to change a value, simply edit, save, and exit the editor.
# The syntax for the file is as follows:
# KEY:TYPE=VALUE
# KEY is the name of a variable in the cache.
# TYPE is a hint to GUIs for the type of VALUE, DO NOT EDIT TYPE!.
# VALUE is the current value for the KEY.

########################
# EXTERNAL cache entries
########################

//No help, variable specified on the command line.
CMAKE_BUILD_TYPE:UNINITIALIZED=None

//No help, variable specified on the command line.
CMAKE_EXPORT_NO_PACKAGE_REGISTRY:UNINITIALIZED=ON

//No help, variable specified on the command line.
CMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY:UNINITIALIZED=ON

//Value Computed by CMake.
CMAKE_FIND_PACKAGE_REDIRECTS_DIR:STATIC=/build/reproducible-path/libclaw-1.7.4/obj-aarch64-linux-gnu/CMakeFiles/pkgRedirects

//No help, variable specified on the command line.
CMAKE_FIND_USE_PACKAGE_REGISTRY:UNINITIALIZED=OFF

//No help, variable specified on the command line.
CMAKE_INSTALL_LIBDIR:UNINITIALIZED=lib/aarch64-linux-gnu

//No help, variable specified on the command line.
CMAKE_INSTALL_LOCALSTATEDIR:UNINITIALIZED=/var

//No help, variable specified on the command line.
CMAKE_INSTALL_PREFIX:UNINITIALIZED=/usr

//No help, variable specified on the command line.
CMAKE_INSTALL_RUNSTATEDIR:UNINITIALIZED=/run

//No help, variable specified on the command line.
CMAKE_INSTALL_SYSCONFDIR:UNINITIALIZED=/etc

//No help, variable specified on the command line.
CMAKE_SKIP_INSTALL_ALL_DEPENDENCY:UNINITIALIZED=ON

//No help, variable specified on the command line.
CMAKE_VERBOSE_MAKEFILE:UNINITIALIZED=ON

//No help, variable specified on the command line.
FETCHCONTENT_FULLY_DISCONNECTED:UNINITIALIZED=ON


########################
# INTERNAL cache entries
########################

//This is the directory where this CMakeCache.txt was created
CMAKE_CACHEFILE_DIR:INTERNAL=/build/reproducible-path/libclaw-1.7.4/obj-aarch64-linux-gnu
//Major version of cmake used to create the current loaded cache
CMAKE_CACHE_MAJOR_VERSION:INTERNAL=4
//Minor version of cmake used to create the current loaded cache
CMAKE_CACHE_MINOR_VERSION:INTERNAL=1
//Patch version of cmake used to create the current loaded cache
CMAKE_CACHE_PATCH_VERSION:INTERNAL=1
//Path to CMake executable.
CMAKE_COMMAND:INTERNAL=/usr/bin/cmake
//Path to cpack program executable.
CMAKE_CPACK_COMMAND:INTERNAL=/usr/bin/cpack
//Path to ctest program executable.
CMAKE_CTEST_COMMAND:INTERNAL=/usr/bin/ctest
//Name of external makefile project generator.
CMAKE_EXTRA_GENERATOR:INTERNAL=
//Name of generator.
CMAKE_GENERATOR:INTERNAL=Unix Makefiles
//Generator instance identifier.
CMAKE_GENERATOR_INSTANCE:INTERNAL=
//Name of generator platform.
CMAKE_GENERATOR_PLATFORM:INTERNAL=
//Name of generator toolset.
CMAKE_GENERATOR_TOOLSET:INTERNAL=
//Source directory with the top level CMakeLists.txt file for this
// project
CMAKE_HOME_DIRECTORY:INTERNAL=/build/reproducible-path/libclaw-1.7.4
//Name of CMakeLists files to read
CMAKE_LIST_FILE_NAME:INTERNAL=CMakeLists.txt
//number of local generators
CMAKE_NUMBER_OF_MAKEFILES:INTERNAL=1
//Path to CMake installation.
CMAKE_ROOT:INTERNAL=/usr/share/cmake-4.1

dh_auto_configure: error: cd obj-aarch64-linux-gnu && DEB_PYTHON_INSTALL_LAYOUT=deb PKG_CONFIG=/usr/bin/pkg-config cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=None -DCMAKE_INSTALL_SYSCONFDIR=/etc -DCMAKE_INSTALL_LOCALSTATEDIR=/var -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=ON -DCMAKE_FIND_USE_PACKAGE_REGISTRY=OFF -DCMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY=ON -DFETCHCONTENT_FULLY_DISCONNECTED=ON -DCMAKE_INSTALL_RUNSTATEDIR=/run -DCMAKE_SKIP_INSTALL_ALL_DEPENDENCY=ON "-GUnix Makefiles" -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_INSTALL_LIBDIR=lib/aarch64-linux-gnu .. returned exit code 1
make: *** [debian/rules:6: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
--------------------------------------------------------------------------------
Build finished at 2025-08-30T03:31:37Z

-------------------------------------------------------------------------------

The above is just how the build ends and not necessarily the most relevant part.
If required, the full build log is available here (for the next 30 days):
https://debusine.debian.net/artifact/2399776/

The most likely cause of build failures is the removed backwards compatibility for
CMake versions earlier than 3.5. You can find additional information in my
debian-devel announcement:

https://lists.debian.org/debian-devel/2025/04/msg00310.html

About the archive rebuild: The build was made on debusine.debian.net,
using sbuild.

You can find the build task here:
https://debusine.debian.net/work-request/153711/

If this is really a bug in one of the build-depends, please use
reassign and affects, so that this is still visible in the BTS web
page for this package.

Thanks,
Timo

More information about the Pkg-games-devel mailing list