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249 lines
9.2 KiB
249 lines
9.2 KiB
CMake 3.25 Release Notes
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************************
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.. only:: html
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.. contents::
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Changes made since CMake 3.24 include the following.
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New Features
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============
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Presets
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-------
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* The :manual:`cmake-presets(7)` schema version has been bumped to ``6``.
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* The :manual:`cmake-presets(7)` format now supports a
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``packagePresets`` field to specify presets for :option:`cpack --preset`.
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* The :manual:`cmake-presets(7)` format now supports a
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``workflowPresets`` field to specify presets for :option:`cmake --workflow`.
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* The :manual:`cmake-presets(7)` format now supports an
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``outputJUnitFile`` field to specify JUnit output in test presets.
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Languages
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---------
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* The :manual:`Compile Features <cmake-compile-features(7)>` functionality
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is now aware of C++26, and defines a ``cxx_std_26`` meta-feature.
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C++26 compiler modes may also be specified via the :prop_tgt:`CXX_STANDARD`,
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:prop_tgt:`CUDA_STANDARD`, :prop_tgt:`HIP_STANDARD`,
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or :prop_tgt:`OBJCXX_STANDARD` target properties.
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* ``CUDA`` language support now includes device link-time optimization when
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using ``nvcc``. The :variable:`CMAKE_INTERPROCEDURAL_OPTIMIZATION` variable
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and the associated :prop_tgt:`INTERPROCEDURAL_OPTIMIZATION` target property
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will activate device LTO.
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Command-Line
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------------
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* A :option:`cmake --workflow --preset <cmake--workflow --preset>` mode was
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added to drive sequences of configure, build, test, and package operations
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through a single command.
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* The :option:`cmake -E capabilities <cmake-E capabilities>` command
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gained a new ``tls`` field that tells whether or not TLS is enabled.
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* The :option:`cmake -E env <cmake-E env>` command-line tool gained
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a ``--modify`` flag to support :prop_test:`ENVIRONMENT_MODIFICATION`
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operations.
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* The :option:`cmake --debug-trycompile` option now prints log messages
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reporting the directory in which each try-compile check is done.
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Compilers
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---------
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* Support for the `Tasking compiler toolsets`_ (SmartCode, TriCore,
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Standalone: ARM, MCS, 8051) was added with compiler id ``Tasking``.
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See the :variable:`CMAKE_TASKING_TOOLSET` variable.
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.. _Tasking compiler toolsets: https://www.tasking.com
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Commands
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--------
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* The :command:`add_subdirectory` command gained a ``SYSTEM`` option
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to enable the :prop_dir:`SYSTEM` directory property in the subdirectory.
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* The :command:`block` and :command:`endblock` commands were added to manage
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specific scopes (policy or variable) for a contained block of commands.
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* The :command:`cmake_language` command gained a new
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``GET_MESSAGE_LOG_LEVEL`` sub-command. It can be used to
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query the current message logging level.
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* The :command:`find_file`, :command:`find_path`, :command:`find_library`, and
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:command:`find_program` commands gained a ``VALIDATOR`` option to specify a
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function to be called for each candidate item to validate it.
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* The :command:`find_package` command now considers paths of
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the form ``<prefix>/<name>*/(cmake|CMake)/<name>*/`` when
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searching for package configuration files.
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* The :command:`return` command gained a ``PROPAGATE`` option to propagate
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variables to the scope to which control returns.
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See policy :policy:`CMP0140`.
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* The :command:`try_compile` and :command:`try_run` commands gained new
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signatures that more consistently use keyword dispatch and do not require a
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binary directory to be specified. Additionally, these signatures use a
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unique directory for each invocation, which allows multiple outputs to be
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preserved when using :option:`cmake --debug-trycompile`.
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* The :command:`try_compile` and :command:`try_run` commands gained the
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option ``NO_CACHE`` to store results in normal variables.
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* The :command:`try_run` command gained ``RUN_OUTPUT_STDOUT_VARIABLE``
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and ``RUN_OUTPUT_STDERR_VARIABLE`` options to capture stdout and stderr
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separately from the output of the compiled program.
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Variables
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---------
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* The :variable:`BSD` and :variable:`CMAKE_HOST_BSD` variables are now set
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to a string value when the target or host system is BSD, respectively.
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* The :variable:`LINUX` and :variable:`CMAKE_HOST_LINUX` variables are
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now set to true when the target or host system is Linux, respectively.
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* The :variable:`CMAKE_MSVC_DEBUG_INFORMATION_FORMAT` variable and
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:prop_tgt:`MSVC_DEBUG_INFORMATION_FORMAT` target property were introduced
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to select the debug information format for compilers targeting the MSVC ABI.
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See policy :policy:`CMP0141`.
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* The :variable:`CMAKE_XCODE_SCHEME_ENABLE_GPU_API_VALIDATION` variable and
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corresponding :prop_tgt:`XCODE_SCHEME_ENABLE_GPU_API_VALIDATION` target
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property were added to tell the :generator:`Xcode` generator what to put
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in the scheme's ``Metal: API Validation`` setting.
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* The :variable:`CMAKE_XCODE_SCHEME_ENABLE_GPU_SHADER_VALIDATION` variable and
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corresponding :prop_tgt:`XCODE_SCHEME_ENABLE_GPU_SHADER_VALIDATION` target
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property were added to tell the :generator:`Xcode` generator what to put
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in the scheme's ``Metal: Shader Validation`` setting.
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* The :variable:`CMAKE_XCODE_SCHEME_LAUNCH_MODE` variable and corresponding
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:prop_tgt:`XCODE_SCHEME_LAUNCH_MODE` target property were added to tell
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the :generator:`Xcode` generator what to put in the scheme's "Launch"
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mode setting.
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* The :variable:`CMAKE_XCODE_SCHEME_LAUNCH_CONFIGURATION` variable and
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corresponding :prop_tgt:`XCODE_SCHEME_LAUNCH_CONFIGURATION` target
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property were added to tell the :generator:`Xcode` generator what
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configuration to put in the scheme's Launch action.
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Properties
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----------
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* The :prop_tgt:`<LANG>_COMPILER_LAUNCHER` target property now supports
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:manual:`generator expressions <cmake-generator-expressions(7)>`.
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* The :prop_tgt:`EXPORT_NO_SYSTEM` target property was added to
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specify that :command:`install(EXPORT)` and :command:`export`
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commands will generate na imported target with
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:prop_tgt:`SYSTEM` property ``OFF``.
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* The :prop_tgt:`SYSTEM` target property was added to specify
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whether a target should be treated as a system library (i.e.
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its include directories are automatically ``SYSTEM`` when
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compiling consumers). If not set, the default is the previous
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behavior: on for imported targets and off for other targets.
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* The :prop_dir:`SYSTEM` directory property was added to initialize the
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:prop_tgt:`SYSTEM` target property for targets created in that directory.
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Modules
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-------
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* The :module:`FetchContent` module :command:`FetchContent_Declare`
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command gained a ``SYSTEM`` option to enable the :prop_dir:`SYSTEM`
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directory property in the subdirectory.
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* The :module:`FindCUDAToolkit` module now provides a target for
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:ref:`nvtx3 <cuda_toolkit_nvtx3>` for CUDA 10.0+, which supersedes
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:ref:`nvToolsExt <cuda_toolkit_nvToolsExt>`. A deprecation warning
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is emitted when using ``nvToolsExt`` if the project requires CMake
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3.25 and CUDA 10.0+ is used.
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* The :module:`FindDoxygen` module's version handling has been improved:
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* Multiple candidate installations will now be considered, if needed,
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to satisfy version constraints. Previously, only the first one
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encountered would be considered.
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* Version ranges are supported.
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* Variations in the version format reported by Doxygen are now
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tolerated (e.g. a trailing git commit hash).
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* The :module:`FindOpenAL` module now provides an imported target.
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* The :module:`FindOpenSP` module was added to find the OpenSP library.
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* The :module:`FindVulkan` module gained support for new components:
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``dxc``
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DirectX Shader Compiler.
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``volk``
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Volk open-source vulkan meta-loader.
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CPack
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-----
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* The :cpack_gen:`CPack Archive Generator` gained a new
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:variable:`CPACK_ARCHIVE_FILE_EXTENSION` variable to control
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the package file name extension.
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* The :cpack_gen:`CPack NSIS Generator` gained two new variables
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:variable:`CPACK_NSIS_EXECUTABLE_PRE_ARGUMENTS` and
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:variable:`CPACK_NSIS_EXECUTABLE_POST_ARGUMENTS`
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to provide arguments to the nsis executable invocation.
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* The :module:`CPack` module gained the :variable:`CPACK_READELF_EXECUTABLE`,
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:variable:`CPACK_OBJCOPY_EXECUTABLE`, and
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:variable:`CPACK_OBJDUMP_EXECUTABLE` variables to control the locations
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of binutils used by :manual:`cpack(1)`.
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Deprecated and Removed Features
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===============================
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* The :prop_tgt:`IMPORTED_NO_SYSTEM` target property has been deprecated
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in favor of :prop_tgt:`SYSTEM` and :prop_tgt:`EXPORT_NO_SYSTEM`.
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* The :generator:`Visual Studio 10 2010` generator has been removed.
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* The :generator:`Visual Studio 11 2012` generator is now deprecated
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and will be removed in a future version of CMake.
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Other Changes
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=============
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* The :envvar:`SSL_CERT_FILE` and :envvar:`SSL_CERT_DIR` environment
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variables can now be used to override where to find certificate
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authorities for TLS/SSL operations.
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* If :prop_tgt:`<LANG>_CLANG_TIDY` includes a ``-p`` argument, the
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full compiler command line is no longer appended after ``--``.
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* The :generator:`Xcode` generator no longer adds the per-config suffix
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``$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)`` to library search paths.
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See policy :policy:`CMP0142`.
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Updates
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=======
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Changes made since CMake 3.25.0 include the following.
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3.25.1
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------
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* On Windows, when targeting the MSVC ABI, the :command:`find_library`
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command no longer accepts ``.a`` file names. This behavior was added
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in CMake 3.25.0, but has been reverted due finding GNU-ABI libraries
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in cases we did not previously.
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