#1113119 libbpp-qt: FTBFS with CMake 4

#1113119#5
Date:
2025-08-31 22:57:33 UTC
From:
To:
Dear maintainer,

During a test rebuild for CMake 4, libbpp-qt failed to rebuild.

Log Summary:
-------------------------------------------------------------------------------
[...]
Format: 3.0 (quilt)
Source: libbpp-qt
Binary: libbpp-qt-dev, libbpp-qt2t64
Architecture: any
Version: 2.4.1-12
Maintainer: Debian Med Packaging Team <debian-med-packaging@lists.alioth.debian.org>
Uploaders: Julien Dutheil <julien.dutheil@univ-montp2.fr>, Andreas Tille <tille@debian.org>
Homepage: http://biopp.univ-montp2.fr/wiki/index.php/Main_Page
Standards-Version: 4.7.0
Vcs-Browser: https://salsa.debian.org/med-team/libbpp-qt
Vcs-Git: https://salsa.debian.org/med-team/libbpp-qt.git
Build-Depends: dpkg-dev (>= 1.22.5), debhelper-compat (= 13), cmake, d-shlibs (>= 0.106~), qt5-qmake, qtdeclarative5-dev, libbpp-phyl-dev
Package-List:
 libbpp-qt-dev deb libdevel optional arch=any
 libbpp-qt2t64 deb libs optional arch=any
Checksums-Sha1:
 8aa07b4680e444f13b41b13c3eb3a4b2aeab3185 50443 libbpp-qt_2.4.1.orig.tar.gz
 33a1c965e2cee1338f7d37be9615bcf1f3c8562f 10872 libbpp-qt_2.4.1-12.debian.tar.xz
Checksums-Sha256:
 4423b35223415c6dc6b483df3cf3276dafabd93c04dfc4716ce0b8e5b3ea219b 50443 libbpp-qt_2.4.1.orig.tar.gz
 0740250292322f07f99bd01de2410774c19ab97468b3cbc64693e6d33021029b 10872 libbpp-qt_2.4.1-12.debian.tar.xz
Files:
 3b87496c95222b1ff18c83bede272731 50443 libbpp-qt_2.4.1.orig.tar.gz
 338729db7b64e2cb2f742c83a4aa1ff4 10872 libbpp-qt_2.4.1-12.debian.tar.xz
-----BEGIN PGP SIGNATURE-----
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=XOWz
-----END PGP SIGNATURE-----

dpkg-source: warning: cannot verify inline signature for ./libbpp-qt_2.4.1-12.dsc: no acceptable signature found
dpkg-source: info: extracting libbpp-qt in /build/reproducible-path/libbpp-qt-2.4.1
dpkg-source: info: unpacking libbpp-qt_2.4.1.orig.tar.gz
dpkg-source: info: unpacking libbpp-qt_2.4.1-12.debian.tar.xz
dpkg-source: info: using patch list from debian/patches/series
dpkg-source: info: applying unforce-cxxflags.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 libbpp-qt
dpkg-buildpackage: info: source version 2.4.1-12
dpkg-buildpackage: info: source distribution unstable
dpkg-buildpackage: info: source changed by Andreas Tille <tille@debian.org>
 dpkg-source --before-build .
dpkg-buildpackage: info: host architecture arm64
 debian/rules clean
dh clean
   dh_clean
 debian/rules binary
dh binary
   dh_update_autotools_config
   dh_autoreconf
   dh_auto_configure
	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:7 (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.
------------------------------------------------------------------------------- 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/2399611/ 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/153694/ 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
#1113119#12
Date:
2025-09-01 11:51:56 UTC
From:
To:
I have downgraded the bug to non-RC severity temporarily and reverted
CMake in unstable to version 3.31.6. I plan to re-upgrade in about a
month's time. I realize that despite my April announcement, the upload
to unstable came rather surprising, and I don't want to cause
unnecessary pain.

Also, the build log URL has an unfortunate mistake. The correct URL
should include the workspace, i.e.,

https://debusine.debian.net/debian/developers/artifact/XXXX

CMake 4 will also be available in experimental again, so it can be
used to verify that the bug is fixed.

Cheers
Timo