#1113197 libsdsl: FTBFS with CMake 4

#1113197#5
Date:
2025-08-31 22:58:58 UTC
From:
To:
Dear maintainer,

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

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

Format: 3.0 (quilt)
Source: libsdsl
Binary: libsdsl-dev, libsdsl3
Architecture: any
Version: 2.1.1+dfsg-5
Maintainer: Debian Science Maintainers <debian-science-maintainers@lists.alioth.debian.org>
Uploaders: Tomasz Buchert <tomasz@debian.org>, Andreas Tille <tille@debian.org>
Homepage: https://github.com/simongog/sdsl-lite
Standards-Version: 4.6.2
Vcs-Browser: https://salsa.debian.org/science-team/libsdsl
Vcs-Git: https://salsa.debian.org/science-team/libsdsl.git
Build-Depends: architecture-is-64-bit [!x32], cmake, d-shlibs, debhelper-compat (= 13), libdivsufsort-dev, libjs-d3
Package-List:
 libsdsl-dev deb libdevel optional arch=any
 libsdsl3 deb libs optional arch=any
Checksums-Sha1:
 a0cc2de7f8a19618f88714baa58e1f49559ed118 424372 libsdsl_2.1.1+dfsg.orig.tar.xz
 d134a413624a25c7c5a9f6cdc50404fc7cb7fe02 4272 libsdsl_2.1.1+dfsg-5.debian.tar.xz
Checksums-Sha256:
 82fb95956e7441e677bdbe5671ba8be828509309daa3fd678dfc4d1ce4fbb898 424372 libsdsl_2.1.1+dfsg.orig.tar.xz
 f81b6e6add4cd3bb69eac365e25de5f1492c8300c62eefd297815736c610ca8c 4272 libsdsl_2.1.1+dfsg-5.debian.tar.xz
Files:
 690b8d76c80df70c144e0dae6e708672 424372 libsdsl_2.1.1+dfsg.orig.tar.xz
 6f23cc00a01f573d3ae6ef5263d78529 4272 libsdsl_2.1.1+dfsg-5.debian.tar.xz
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dpkg-source: warning: cannot verify inline signature for ./libsdsl_2.1.1+dfsg-5.dsc: no acceptable signature found
dpkg-source: info: extracting libsdsl in /build/reproducible-path/libsdsl-2.1.1+dfsg
dpkg-source: info: unpacking libsdsl_2.1.1+dfsg.orig.tar.xz
dpkg-source: info: unpacking libsdsl_2.1.1+dfsg-5.debian.tar.xz
dpkg-source: info: using patch list from debian/patches/series
dpkg-source: info: applying 0001-Patch-cmake-files.patch
dpkg-source: info: applying use_debian_packaged_d3.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 libsdsl
dpkg-buildpackage: info: source version 2.1.1+dfsg-5
dpkg-buildpackage: info: source distribution unstable
dpkg-buildpackage: info: source changed by Michael R. Crusoe <crusoe@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: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/2402324/ 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/153888/ 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
#1113197#12
Date:
2025-09-01 11:52:03 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