Bug#1113455: qzxing: FTBFS with CMake 4

To: maintonly@bugs.debian.org
Subject: Bug#1113455: qzxing: FTBFS with CMake 4
From: roehling@debian.org
Date: Mon, 01 Sep 2025 01:03:42 +0200
Message-id: <[🔎] 5f093eeb3748f70644a6830a75370165@debian.org>
Reply-to: roehling@debian.org, 1113455-maintonly@bugs.debian.org
Source: qzxing
Version: 3.3.0+dfsg-7
Severity: serious
User: cmake@packages.debian.org
Usertags: cmake-4
Tags: ftbfs, forky, sid

Dear maintainer,

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

Log Summary:
-------------------------------------------------------------------------------
[...]
   debian/rules override_dh_auto_clean
make[1]: Entering directory '/build/reproducible-path/qzxing-3.3.0+dfsg'
dh_auto_clean -D src/
make[1]: Leaving directory '/build/reproducible-path/qzxing-3.3.0+dfsg'
   dh_autoreconf_clean -O-Dsrc/
   dh_clean -O-Dsrc/
	rm -f debian/debhelper-build-stamp
	rm -rf debian/.debhelper/
	rm -f -- debian/libqzxing3.substvars debian/libqzxing-dev.substvars debian/files
	rm -fr -- debian/libqzxing3/ debian/tmp/ debian/libqzxing-dev/
	find .  \( \( \
		\( -path .\*/.git -o -path .\*/.svn -o -path .\*/.bzr -o -path .\*/.hg -o -path .\*/CVS -o -path .\*/.pc -o -path .\*/_darcs \) -prune -o -type f -a \
	        \( -name '#*#' -o -name '.*~' -o -name '*~' -o -name DEADJOE \
		 -o -name '*.orig' -o -name '*.rej' -o -name '*.bak' \
		 -o -name '.*.orig' -o -name .*.rej -o -name '.SUMS' \
		 -o -name TAGS -o \( -path '*/.deps/*' -a -name '*.P' \) \
		\) -exec rm -f {} + \) -o \
		\( -type d -a \( -name autom4te.cache -o -name __pycache__ \) -prune -exec rm -rf {} + \) \)
 debian/rules binary
dh binary -D src/ --with pkgkde_symbolshelper
   dh_testdir -O-Dsrc/
   dh_update_autotools_config -O-Dsrc/
   dh_autoreconf -O-Dsrc/
   debian/rules override_dh_auto_configure
make[1]: Entering directory '/build/reproducible-path/qzxing-3.3.0+dfsg'
dh_auto_configure --			\
    -DBUILD_SHARED=ON			\
    -DQZXING_MULTIMEDIA=ON		\
    -DQZXING_USE_QML=ON			\
    -DQZXING_USE_ENCODER=ON		\
    -DQZXING_MULTIMEDIA=ON		\
    -DQZXING_USE_QML=ON			\
    -DQZXING_USE_ENCODER=ON		\
    -DQZXING_USE_DECODER_QR_CODE=ON	\
    -DQZXING_USE_DECODER_1D_BARCODES=ON	\
    -DQZXING_USE_DECODER_DATA_MATRIX=ON	\
    -DQZXING_USE_DECODER_AZTEC=ON	\
    -DQZXING_USE_DECODER_PDF17=ON	\
    -DQZXING_USE_DECODER_1D_BARCODES=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 -DBUILD_SHARED=ON -DQZXING_MULTIMEDIA=ON -DQZXING_USE_QML=ON -DQZXING_USE_ENCODER=ON -DQZXING_MULTIMEDIA=ON -DQZXING_USE_QML=ON -DQZXING_USE_ENCODER=ON -DQZXING_USE_DECODER_QR_CODE=ON -DQZXING_USE_DECODER_1D_BARCODES=ON -DQZXING_USE_DECODER_DATA_MATRIX=ON -DQZXING_USE_DECODER_AZTEC=ON -DQZXING_USE_DECODER_PDF17=ON -DQZXING_USE_DECODER_1D_BARCODES=ON ../src
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.


-- Configuring incomplete, errors occurred!
	cd obj-aarch64-linux-gnu && tail -v -n \+0 CMakeCache.txt
==> CMakeCache.txt <==
# This is the CMakeCache file.
# For build in directory: /build/reproducible-path/qzxing-3.3.0+dfsg/obj-aarch64-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=VALUE
# 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.
BUILD_SHARED:UNINITIALIZED=ON

//No help, variable specified on the command line.
CMAKE_BUILD_TYPE:UNINITIALIZED=None

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

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

//Value Computed by CMake.
CMAKE_FIND_PACKAGE_REDIRECTS_DIR:STATIC=/build/reproducible-path/qzxing-3.3.0+dfsg/obj-aarch64-linux-gnu/CMakeFiles/pkgRedirects

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

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

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

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

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

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

//No help, variable specified on the command line.
CMAKE_SKIP_INSTALL_ALL_DEPENDENCY:UNINITIALIZED=ON

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

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

//No help, variable specified on the command line.
QZXING_MULTIMEDIA:UNINITIALIZED=ON

//No help, variable specified on the command line.
QZXING_USE_DECODER_1D_BARCODES:UNINITIALIZED=ON

//No help, variable specified on the command line.
QZXING_USE_DECODER_AZTEC:UNINITIALIZED=ON

//No help, variable specified on the command line.
QZXING_USE_DECODER_DATA_MATRIX:UNINITIALIZED=ON

//No help, variable specified on the command line.
QZXING_USE_DECODER_PDF17:UNINITIALIZED=ON

//No help, variable specified on the command line.
QZXING_USE_DECODER_QR_CODE:UNINITIALIZED=ON

//No help, variable specified on the command line.
QZXING_USE_ENCODER:UNINITIALIZED=ON

//No help, variable specified on the command line.
QZXING_USE_QML:UNINITIALIZED=ON


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

//This is the directory where this CMakeCache.txt was created
CMAKE_CACHEFILE_DIR:INTERNAL=/build/reproducible-path/qzxing-3.3.0+dfsg/obj-aarch64-linux-gnu
//Major version of cmake used to create the current loaded cache
CMAKE_CACHE_MAJOR_VERSION:INTERNAL=4
//Minor version of cmake used to create the current loaded cache
CMAKE_CACHE_MINOR_VERSION:INTERNAL=1
//Patch version of cmake used to create the current loaded cache
CMAKE_CACHE_PATCH_VERSION:INTERNAL=1
//Path to CMake executable.
CMAKE_COMMAND:INTERNAL=/usr/bin/cmake
//Path to cpack program executable.
CMAKE_CPACK_COMMAND:INTERNAL=/usr/bin/cpack
//Path to ctest program executable.
CMAKE_CTEST_COMMAND:INTERNAL=/usr/bin/ctest
//Name of external makefile project generator.
CMAKE_EXTRA_GENERATOR:INTERNAL=
//Name of generator.
CMAKE_GENERATOR:INTERNAL=Unix Makefiles
//Generator instance identifier.
CMAKE_GENERATOR_INSTANCE:INTERNAL=
//Name of generator platform.
CMAKE_GENERATOR_PLATFORM:INTERNAL=
//Name of generator toolset.
CMAKE_GENERATOR_TOOLSET:INTERNAL=
//Source directory with the top level CMakeLists.txt file for this
// project
CMAKE_HOME_DIRECTORY:INTERNAL=/build/reproducible-path/qzxing-3.3.0+dfsg/src
//Name of CMakeLists files to read
CMAKE_LIST_FILE_NAME:INTERNAL=CMakeLists.txt
//number of local generators
CMAKE_NUMBER_OF_MAKEFILES:INTERNAL=1
//Path to CMake installation.
CMAKE_ROOT:INTERNAL=/usr/share/cmake-4.1

dh_auto_configure: error: 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=ON -DQZXING_MULTIMEDIA=ON -DQZXING_USE_QML=ON -DQZXING_USE_ENCODER=ON -DQZXING_MULTIMEDIA=ON -DQZXING_USE_QML=ON -DQZXING_USE_ENCODER=ON -DQZXING_USE_DECODER_QR_CODE=ON -DQZXING_USE_DECODER_1D_BARCODES=ON -DQZXING_USE_DECODER_DATA_MATRIX=ON -DQZXING_USE_DECODER_AZTEC=ON -DQZXING_USE_DECODER_PDF17=ON -DQZXING_USE_DECODER_1D_BARCODES=ON ../src returned exit code 1
make[1]: *** [debian/rules:16: override_dh_auto_configure] Error 2
make[1]: Leaving directory '/build/reproducible-path/qzxing-3.3.0+dfsg'
make: *** [debian/rules:13: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
--------------------------------------------------------------------------------
Build finished at 2025-08-30T16:46:05Z

-------------------------------------------------------------------------------

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/2409828/

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/154701/

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
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