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Date: Mon, 01 Sep 2025 01:06:48 +0200
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Subject: viennacl: FTBFS with CMake 4
From: roehling@debian.org
To: maintonly@bugs.debian.org
X-Debian-User: roehling
Delivered-To: maintonly@bugs.debian.org

Source: viennacl
Version: 1.7.1+dfsg1-6
Severity: serious
User: cmake@packages.debian.org
Usertags: cmake-4
Tags: ftbfs, forky, sid

Dear maintainer,

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

Log Summary:
-----------------------------------------------------------------------------=
--
[...]
Architecture: all
Version: 1.7.1+dfsg1-6
Maintainer: Debian Science Maintainers &lt;debian-science-maintainers@lists.alio=
th.debian.org&gt;
Uploaders: Michael Wild &lt;themiwi@users.sourceforge.net&gt;, Toby Smithe &lt;tsmithe=
@ubuntu.com&gt;
Homepage: http://viennacl.sourceforge.net
Standards-Version: 4.1.4
Vcs-Browser: https://salsa.debian.org/science-team/viennacl
Vcs-Git: https://salsa.debian.org/science-team/viennacl.git
Testsuite: autopkgtest
Testsuite-Triggers: build-essential
Build-Depends: cmake, debhelper (&gt;=3D 11~), doxygen, ghostscript, libboost-ch=
rono-dev, libboost-date-time-dev, libboost-filesystem-dev, libboost-serializa=
tion-dev, libboost-thread-dev, ocl-icd-opencl-dev | opencl-dev, texlive-fonts=
-recommended, texlive-latex-extra, texlive-latex-recommended, texlive-pstricks
Package-List:
 libviennacl-dev deb libdevel optional arch=3Dall
 libviennacl-doc deb doc optional arch=3Dall
Checksums-Sha1:
 e7efddb758a8174b33ae3860d36bbdccd2daf9d7 15577202 viennacl_1.7.1+dfsg1.orig.=
tar.gz
 bacde5bfdb70bfa041f3d3faefda5615cc8db4ee 1298840 viennacl_1.7.1+dfsg1-6.debi=
an.tar.xz
Checksums-Sha256:
 c06d340f2cd7d752faf716eb4c9b7b8b3bf99f520ae3ca3a6bee95ab630f45e7 15577202 vi=
ennacl_1.7.1+dfsg1.orig.tar.gz
 839068f6e0089606c6c48c6a8844fb6c8a3d0a6c247e34f8734bd03ea2e39061 1298840 vie=
nnacl_1.7.1+dfsg1-6.debian.tar.xz
Files:
 7b432bdf0d7f9f01d7ba42ba4cbf228c 15577202 viennacl_1.7.1+dfsg1.orig.tar.gz
 9d14f1e239491375eb9821dafc3d114d 1298840 viennacl_1.7.1+dfsg1-6.debian.tar.xz

-----BEGIN PGP SIGNATURE-----
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3D
=3DKD2Q
-----END PGP SIGNATURE-----

dpkg-source: warning: cannot verify inline signature for ./viennacl_1.7.1+dfs=
g1-6.dsc: no acceptable signature found
dpkg-source: info: extracting viennacl in /build/reproducible-path/viennacl-1=
.7.1+dfsg1
dpkg-source: info: unpacking viennacl_1.7.1+dfsg1.orig.tar.gz
dpkg-source: info: unpacking viennacl_1.7.1+dfsg1-6.debian.tar.xz

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

Sufficient free space for build

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

APT_CONFIG=3D/var/lib/sbuild/apt.conf
HOME=3D/sbuild-nonexistent
LANG=3DC.UTF-8
LC_ALL=3DC.UTF-8
LOGNAME=3Dsbuild
PATH=3D/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
SHELL=3D/bin/sh
USER=3Dsbuild

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

Command: dpkg-buildpackage --sanitize-env -us -uc -b
dpkg-buildpackage: info: source package viennacl
dpkg-buildpackage: info: source version 1.7.1+dfsg1-6
dpkg-buildpackage: info: source distribution unstable
dpkg-buildpackage: info: source changed by Graham Inggs &lt;ginggs@debian.org&gt;
 dpkg-source --before-build .
dpkg-buildpackage: info: host architecture arm64
 debian/rules clean
dh clean --without python-support --parallel
   dh_clean
 debian/rules binary
dh binary --without python-support --parallel
   dh_update_autotools_config
   dh_autoreconf
   dh_auto_configure
	cd obj-aarch64-linux-gnu &amp;&amp; DEB_PYTHON_INSTALL_LAYOUT=3Ddeb PKG_CONFIG=3D/us=
r/bin/pkg-config cmake -DCMAKE_INSTALL_PREFIX=3D/usr -DCMAKE_BUILD_TYPE=3DNon=
e -DCMAKE_INSTALL_SYSCONFDIR=3D/etc -DCMAKE_INSTALL_LOCALSTATEDIR=3D/var -DCM=
AKE_EXPORT_NO_PACKAGE_REGISTRY=3DON -DCMAKE_FIND_USE_PACKAGE_REGISTRY=3DOFF -=
DCMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY=3DON -DFETCHCONTENT_FULLY_DISCONNECTE=
D=3DON -DCMAKE_INSTALL_RUNSTATEDIR=3D/run &quot;-GUnix Makefiles&quot; -DCMAKE_VERBOSE_=
MAKEFILE=3DON -DCMAKE_INSTALL_LIBDIR=3Dlib/aarch64-linux-gnu ..
CMake Error at CMakeLists.txt:4 (cmake_minimum_required):
  Compatibility with CMake &lt; 3.5 has been removed from CMake.

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

  Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3D3.5 to try configuring anyway.


-- Configuring incomplete, errors occurred!
	cd obj-aarch64-linux-gnu &amp;&amp; tail -v -n \+0 CMakeCache.txt
=3D=3D&gt; CMakeCache.txt &lt;=3D=3D
# This is the CMakeCache file.
# For build in directory: /build/reproducible-path/viennacl-1.7.1+dfsg1/obj-a=
arch64-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=3DVALUE
# 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=3DNone

//No help, variable specified on the command line.
CMAKE_EXPORT_NO_PACKAGE_REGISTRY:UNINITIALIZED=3DON

//No help, variable specified on the command line.
CMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY:UNINITIALIZED=3DON

//Value Computed by CMake.
CMAKE_FIND_PACKAGE_REDIRECTS_DIR:STATIC=3D/build/reproducible-path/viennacl-1=
.7.1+dfsg1/obj-aarch64-linux-gnu/CMakeFiles/pkgRedirects

//No help, variable specified on the command line.
CMAKE_FIND_USE_PACKAGE_REGISTRY:UNINITIALIZED=3DOFF

//No help, variable specified on the command line.
CMAKE_INSTALL_LIBDIR:UNINITIALIZED=3Dlib/aarch64-linux-gnu

//No help, variable specified on the command line.
CMAKE_INSTALL_LOCALSTATEDIR:UNINITIALIZED=3D/var

//No help, variable specified on the command line.
CMAKE_INSTALL_PREFIX:UNINITIALIZED=3D/usr

//No help, variable specified on the command line.
CMAKE_INSTALL_RUNSTATEDIR:UNINITIALIZED=3D/run

//No help, variable specified on the command line.
CMAKE_INSTALL_SYSCONFDIR:UNINITIALIZED=3D/etc

//No help, variable specified on the command line.
CMAKE_VERBOSE_MAKEFILE:UNINITIALIZED=3DON

//No help, variable specified on the command line.
FETCHCONTENT_FULLY_DISCONNECTED:UNINITIALIZED=3DON


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

//This is the directory where this CMakeCache.txt was created
CMAKE_CACHEFILE_DIR:INTERNAL=3D/build/reproducible-path/viennacl-1.7.1+dfsg1/=
obj-aarch64-linux-gnu
//Major version of cmake used to create the current loaded cache
CMAKE_CACHE_MAJOR_VERSION:INTERNAL=3D4
//Minor version of cmake used to create the current loaded cache
CMAKE_CACHE_MINOR_VERSION:INTERNAL=3D1
//Patch version of cmake used to create the current loaded cache
CMAKE_CACHE_PATCH_VERSION:INTERNAL=3D1
//Path to CMake executable.
CMAKE_COMMAND:INTERNAL=3D/usr/bin/cmake
//Path to cpack program executable.
CMAKE_CPACK_COMMAND:INTERNAL=3D/usr/bin/cpack
//Path to ctest program executable.
CMAKE_CTEST_COMMAND:INTERNAL=3D/usr/bin/ctest
//Name of external makefile project generator.
CMAKE_EXTRA_GENERATOR:INTERNAL=3D
//Name of generator.
CMAKE_GENERATOR:INTERNAL=3DUnix Makefiles
//Generator instance identifier.
CMAKE_GENERATOR_INSTANCE:INTERNAL=3D
//Name of generator platform.
CMAKE_GENERATOR_PLATFORM:INTERNAL=3D
//Name of generator toolset.
CMAKE_GENERATOR_TOOLSET:INTERNAL=3D
//Source directory with the top level CMakeLists.txt file for this
// project
CMAKE_HOME_DIRECTORY:INTERNAL=3D/build/reproducible-path/viennacl-1.7.1+dfsg1
//Name of CMakeLists files to read
CMAKE_LIST_FILE_NAME:INTERNAL=3DCMakeLists.txt
//number of local generators
CMAKE_NUMBER_OF_MAKEFILES:INTERNAL=3D1
//Path to CMake installation.
CMAKE_ROOT:INTERNAL=3D/usr/share/cmake-4.1

dh_auto_configure: error: cd obj-aarch64-linux-gnu &amp;&amp; DEB_PYTHON_INSTALL_LAYO=
UT=3Ddeb PKG_CONFIG=3D/usr/bin/pkg-config cmake -DCMAKE_INSTALL_PREFIX=3D/usr=
 -DCMAKE_BUILD_TYPE=3DNone -DCMAKE_INSTALL_SYSCONFDIR=3D/etc -DCMAKE_INSTALL_=
LOCALSTATEDIR=3D/var -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=3DON -DCMAKE_FIND_USE=
_PACKAGE_REGISTRY=3DOFF -DCMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY=3DON -DFETCH=
CONTENT_FULLY_DISCONNECTED=3DON -DCMAKE_INSTALL_RUNSTATEDIR=3D/run &quot;-GUnix Ma=
kefiles&quot; -DCMAKE_VERBOSE_MAKEFILE=3DON -DCMAKE_INSTALL_LIBDIR=3Dlib/aarch64-l=
inux-gnu .. returned exit code 1
make: *** [debian/rules:24: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status=
 2
-----------------------------------------------------------------------------=
---
Build finished at 2025-08-30T23:11:41Z

-----------------------------------------------------------------------------=
--

The above is just how the build ends and not necessarily the most relevant pa=
rt.
If required, the full build log is available here (for the next 30 days):
https://debusine.debian.net/artifact/2413352/

The most likely cause of build failures is the removed backwards compatibilit=
y 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/155129/

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
]