#1113450 qtmir: FTBFS with CMake 4

#1113450#5
Date:
2025-08-31 23:03:36 UTC
From:
To:
Dear maintainer,

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

Log Summary:
-------------------------------------------------------------------------------
[...]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=G1Tx
-----END PGP SIGNATURE-----

dpkg-source: warning: cannot verify inline signature for ./qtmir_0.8.0~git20250407.ea2f477-3.dsc: no acceptable signature found
dpkg-source: info: extracting qtmir in /build/reproducible-path/qtmir-0.8.0~git20250407.ea2f477
dpkg-source: info: unpacking qtmir_0.8.0~git20250407.ea2f477.orig.tar.xz
dpkg-source: info: unpacking qtmir_0.8.0~git20250407.ea2f477-3.debian.tar.xz
dpkg-source: info: using patch list from debian/patches/series
dpkg-source: info: applying 2002_no-requires-provides-check.patch
dpkg-source: info: applying 2003_disable-benchmarks.patch
dpkg-source: info: applying 0002_src-modules-Re-introduce-lost-workaround-for-font-re.patch
dpkg-source: info: applying 0009_src-modules-Add-header-for-getpid.patch
dpkg-source: info: applying 0011_src-platforms-Wrap-window-activity-change-in-a-try-c.patch
dpkg-source: info: applying 0012_src-modules-Partial-revert-of-e73ef71622ad3202b77bf6.patch
dpkg-source: info: applying 0022_modules-MirSurface-try-to-let-Mir-forceClose-dead-su.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 qtmir
dpkg-buildpackage: info: source version 0.8.0~git20250407.ea2f477-3
dpkg-buildpackage: info: source distribution unstable
dpkg-buildpackage: info: source changed by Mike Gabriel <sunweaver@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
   debian/rules override_dh_auto_configure
make[1]: Entering directory '/build/reproducible-path/qtmir-0.8.0~git20250407.ea2f477'
dh_auto_configure -- -DWITH_CONTENTHUB=ON -DWerror=OFF -DWITH_MIR2=on
	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 -DWITH_CONTENTHUB=ON -DWerror=OFF -DWITH_MIR2=on ..
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.
-------------------------------------------------------------------------------

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/2409701/

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/154687/

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

#1113450#12
Date:
2025-09-01 11:52:29 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