Source: simgear
Version: 1:2020.3.19+dfsg-1
Severity: serious
User: [email protected]
Usertags: cmake-4
Tags: ftbfs, forky, sid

Dear maintainer,

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

Log Summary:
-------------------------------------------------------------------------------
[...]
        cd build && 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 
-DCMAKE_BUILD_TYPE=RelWithDebInfo "-DCMAKE_C_FLAGS=-g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/simgear-2020.3.19+dfsg=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -Wdate-time 
-D_FORTIFY_SOURCE=2" "-DCMAKE_CXX_FLAGS=-g -O2 
-ffile-prefix-map=/build/reproducible-path/simgear-2020.3.19+dfsg=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -Wdate-time 
-D_FORTIFY_SOURCE=2" "-DCMAKE_CXX_FLAGS_RELWITHDEBINFO=-g -DNDEBUG" 
"-DCMAKE_SHARED_LINKER_FLAGS=-Wl,-z,relro -Wl,-z,now" 
-DCMAKE_INSTALL_PREFIX:PATH=/usr -DSIMGEAR_SHARED=OFF -DSYSTEM_EXPAT=ON 
-DSYSTEM_UDNS=ON -DENABLE_DNS=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.


-- Configuring incomplete, errors occurred!
        cd build && tail -v -n \+0 CMakeCache.txt
==> CMakeCache.txt <==
# This is the CMakeCache file.
# For build in directory: /build/reproducible-path/simgear-2020.3.19+dfsg/build
# 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.
CMAKE_BUILD_TYPE:UNINITIALIZED=RelWithDebInfo

//No help, variable specified on the command line.
CMAKE_CXX_FLAGS:UNINITIALIZED=-g -O2 
-ffile-prefix-map=/build/reproducible-path/simgear-2020.3.19+dfsg=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -Wdate-time 
-D_FORTIFY_SOURCE=2

//No help, variable specified on the command line.
CMAKE_CXX_FLAGS_RELWITHDEBINFO:UNINITIALIZED=-g -DNDEBUG

//No help, variable specified on the command line.
CMAKE_C_FLAGS:UNINITIALIZED=-g -O2 -Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/simgear-2020.3.19+dfsg=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -Wdate-time 
-D_FORTIFY_SOURCE=2

//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/simgear-2020.3.19+dfsg/build/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:PATH=/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_SHARED_LINKER_FLAGS:UNINITIALIZED=-Wl,-z,relro -Wl,-z,now

//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.
ENABLE_DNS:UNINITIALIZED=ON

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

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

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

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


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

//This is the directory where this CMakeCache.txt was created
CMAKE_CACHEFILE_DIR:INTERNAL=/build/reproducible-path/simgear-2020.3.19+dfsg/build
//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/simgear-2020.3.19+dfsg
//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 build && 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 
-DCMAKE_BUILD_TYPE=RelWithDebInfo "-DCMAKE_C_FLAGS=-g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/simgear-2020.3.19+dfsg=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -Wdate-time 
-D_FORTIFY_SOURCE=2" "-DCMAKE_CXX_FLAGS=-g -O2 
-ffile-prefix-map=/build/reproducible-path/simgear-2020.3.19+dfsg=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -Wdate-time 
-D_FORTIFY_SOURCE=2" "-DCMAKE_CXX_FLAGS_RELWITHDEBINFO=-g -DNDEBUG" 
"-DCMAKE_SHARED_LINKER_FLAGS=-Wl,-z,relro -Wl,-z,now" 
-DCMAKE_INSTALL_PREFIX:PATH=/usr -DSIMGEAR_SHARED=OFF -DSYSTEM_EXPAT=ON 
-DSYSTEM_UDNS=ON -DENABLE_DNS=ON .. returned exit code 1
make[1]: *** [debian/rules:45: override_dh_auto_configure] Error 2
make[1]: Leaving directory '/build/reproducible-path/simgear-2020.3.19+dfsg'
make: *** [debian/rules:42: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
--------------------------------------------------------------------------------
Build finished at 2025-08-30T20:15:48Z

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

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/2411177/

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/154862/

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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