#1112804 combblas: FTBFS with CMake 4

#1112804#5
Date:
2025-08-31 22:51:42 UTC
From:
To:
Dear maintainer,

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

Log Summary:
-------------------------------------------------------------------------------
[...]

iQIzBAEBCgAdFiEEG10EseUHu/A2aeK4AfNfwz5zr4wFAmcjbH0ACgkQAfNfwz5z
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byxMMoDR4S3WBfEm4/SmdIAnTVfzvQ+mzRvPhQW/Xx/2DI5XaYc=
=od0l
-----END PGP SIGNATURE-----

dpkg-source: warning: cannot verify inline signature for ./combblas_2.0.0-6.dsc: no acceptable signature found
dpkg-source: info: extracting combblas in /build/reproducible-path/combblas-2.0.0
dpkg-source: info: unpacking combblas_2.0.0.orig.tar.gz
dpkg-source: info: unpacking combblas_2.0.0-6.debian.tar.xz
dpkg-source: info: using patch list from debian/patches/series
dpkg-source: info: applying cmake_multiarch.patch
dpkg-source: info: applying sublibs_soname.patch
dpkg-source: info: applying GraphGenlib_link_math.patch
dpkg-source: info: applying mpi_build.patch
dpkg-source: info: applying update_version_PR18.patch
dpkg-source: info: applying mpi_comm_eb4811a.diff
dpkg-source: info: applying mpi_comm_ecf9621.diff
dpkg-source: info: applying AWPM_library_38dd27e.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 combblas
dpkg-buildpackage: info: source version 2.0.0-6
dpkg-buildpackage: info: source distribution unstable
dpkg-buildpackage: info: source changed by Francesco Ballarin <francesco.ballarin@unicatt.it>
 dpkg-source --before-build .
dpkg-buildpackage: info: host architecture arm64
 debian/rules clean
dh clean
   dh_clean
   debian/rules execute_after_dh_clean
make[1]: Entering directory '/build/reproducible-path/combblas-2.0.0'
rm -rf doc
make[1]: Leaving directory '/build/reproducible-path/combblas-2.0.0'
 debian/rules binary
dh binary
   dh_update_autotools_config
   dh_autoreconf
   debian/rules override_dh_auto_configure
make[1]: Entering directory '/build/reproducible-path/combblas-2.0.0'
dh_auto_configure -- \
            -DBUILD_SHARED_LIBS=ON \
            -DCMAKE_SKIP_RPATH=ON \
            -DMPIEXEC_PREFLAGS=--allow-run-as-root
	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 -DBUILD_SHARED_LIBS=ON -DCMAKE_SKIP_RPATH=ON -DMPIEXEC_PREFLAGS=--allow-run-as-root ..
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/2390506/

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/152600/

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

#1112804#12
Date:
2025-09-01 11:51:14 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

#1112804#19
Date:
2025-09-28 00:34:44 UTC
From:
To:
We believe that the bug you reported is fixed in the latest version of
combblas, 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 1112804@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Drew Parsons <dparsons@debian.org> (supplier of updated combblas 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, 28 Sep 2025 01:31:35 +0200
Source: combblas
Architecture: source
Version: 2.0.0-7
Distribution: unstable
Urgency: medium
Maintainer: Debian Science Maintainers <debian-science-maintainers@lists.alioth.debian.org>
Changed-By: Drew Parsons <dparsons@debian.org>
Closes: 1112804
Changes:
 combblas (2.0.0-7) unstable; urgency=medium
 .
   * replace debian patch cmake_multiarch.patch with cmake4_PR31.diff
     applying upstream PR#31 to update cmake definitions for cmake 4.
     Closes: #1112804.
   * Standards-Version: 4.7.2
Checksums-Sha1:
 5e7f6336c21fd5347be736e6d2382b0545bc1950 2319 combblas_2.0.0-7.dsc
 a425f66fa8e126202e157b37e8bf8ca79d1bddc8 33750696 combblas_2.0.0-7.debian.tar.xz
 0cd32934821ee7c7b11af62529e464dc29ec0f74 10317 combblas_2.0.0-7_source.buildinfo
Checksums-Sha256:
 712b49cb259f8b4e97389f3c8a7ead159fd9a14ee3d6fdc7c1130499470c7bc3 2319 combblas_2.0.0-7.dsc
 f02780ed5c950b68aec4fdd794d3f5e7ad80fa0b220bfc6912106400b536c5ce 33750696 combblas_2.0.0-7.debian.tar.xz
 cbccf99102d7f2b14a071fa4e545f559e3c6ce3069fa3cbdc9e1044b1472b0e9 10317 combblas_2.0.0-7_source.buildinfo
Files:
 6ece59bc53a81a85ab2eb935200fec85 2319 libs optional combblas_2.0.0-7.dsc
 3918c083316c23941626a920efca97d6 33750696 libs optional combblas_2.0.0-7.debian.tar.xz
 9aa1b53c46e1504a6105c97df3bed1d3 10317 libs optional combblas_2.0.0-7_source.buildinfo
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