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author | Brad King <brad.king@kitware.com> | 2022-06-07 20:02:20 (GMT) |
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committer | Brad King <brad.king@kitware.com> | 2022-06-08 13:07:21 (GMT) |
commit | a811489b35a394028d265614af515a2e106749bc (patch) | |
tree | 1e442e1d40ccadd73c3b99238446d880211ded6e /Help/release | |
parent | a3fc4698826172ec187844c4590cef58a310e074 (diff) | |
download | CMake-a811489b35a394028d265614af515a2e106749bc.zip CMake-a811489b35a394028d265614af515a2e106749bc.tar.gz CMake-a811489b35a394028d265614af515a2e106749bc.tar.bz2 |
Help: Organize and revise 3.24 release notes
Add section headers similar to the 3.23 release notes and move each
individual bullet into an appropriate section. Revise a few bullets.
Diffstat (limited to 'Help/release')
-rw-r--r-- | Help/release/3.24.rst | 448 |
1 files changed, 243 insertions, 205 deletions
diff --git a/Help/release/3.24.rst b/Help/release/3.24.rst index 803d7dc..05fd848 100644 --- a/Help/release/3.24.rst +++ b/Help/release/3.24.rst @@ -7,86 +7,80 @@ CMake 3.24 Release Notes Changes made since CMake 3.23 include the following. -* The ADSP compiler (SHARC and Blackfin) now supports - both CCES and VDSP++ installations, - with required configuration now done in the compiler module itself - rather than the Generic-ADSP platform module. +New Features +============ -* A dedicated ``ADSP`` platform has been added - to replace the existing ``Generic-ADSP`` implementation. - This features automatic detection of the latest CCES/VDSP++ install - and compiler selection (``cc21k`` vs. ``ccblkfn``) - based off of the :variable:`CMAKE_SYSTEM_PROCESSOR` variable. +Presets +------- -* The :genex:`LINK_LIBRARY` generator expression gained the ability to link - frameworks in various ways when targeting ``Apple`` platforms. The following - new features were added: +* :manual:`cmake-presets(7)` files now support schema version ``5``. - * ``FRAMEWORK`` - * ``NEEDED_FRAMEWORK`` - * ``REEXPORT_FRAMEWORK`` - * ``WEAK_FRAMEWORK`` +* :manual:`cmake-presets(7)` files now support a ``${pathListSep}`` macro, + which expands to ``:`` or ``;`` based on the platform. -* The :genex:`LINK_LIBRARY` generator expression gained the ability to link - libraries in various ways when targeting ``Apple`` platforms. The following - new features were added: +* :manual:`cmake-presets(7)` files gained support for specifying a + ``testOutputTruncation`` field in test presets, which specifies the + truncation mode once the maximum test output size has been reached. - * ``NEEDED_LIBRARY`` - * ``REEXPORT_LIBRARY`` - * ``WEAK_LIBRARY`` +Generators +---------- -* :command:`cmake_host_system_information` command gains the capability, on - ``Windows`` platform, to query the registry. +* The :generator:`Green Hills MULTI` generator now generates build + rules to re-run CMake if any CMake files are updated. -* The :manual:`cmake(1)` ``-E tar`` command gained the ``--touch`` option - to keep the current local timestamp instead of extracting file timestamps - from the archive. +* The :ref:`Visual Studio Generators` now support ``SYSTEM`` headers. + +Command-Line +------------ * :manual:`cmake(1)` gained the ``--fresh`` command-line option to remove - any existing ``CMakeCache.txt`` when configuring a build tree. + any existing ``CMakeCache.txt`` when configuring a build tree, thus + starting a new configuration as if the build tree were freshly created. -* The :variable:`CMAKE_PROJECT_TOP_LEVEL_INCLUDES` variable was added to allow - injecting custom code at the site of the first :command:`project` call, - after the host and target platform details have been determined. +* :manual:`cmake(1)` gained the ``--compile-no-warning-as-error`` command-line + option which causes the effects of the :prop_tgt:`COMPILE_WARNING_AS_ERROR` + target property and :variable:`CMAKE_COMPILE_WARNING_AS_ERROR` variable + to be ignored. + +* The :manual:`cmake(1)` ``--trace=json-v1`` trace format gained fields + ``global_frame`` and ``line_end``. * The :manual:`cmake(1)` ``-E`` commands ``cat`` and ``env`` learned to respect a double dash (``--``) argument that acts as a delimiter indicating the end of options. Any following arguments are treated as operands/positional arguments, even if they begin with a dash ``-`` character. -* The :variable:`CMAKE_COLOR_DIAGNOSTICS` variable was added to control - color diagnostics generated by compilers. This variable also controls - color buildsystem messages with :ref:`Makefile Generators`, replacing - :variable:`CMAKE_COLOR_MAKEFILE`. +* The :manual:`cmake(1)` ``-E tar`` command gained the ``--touch`` option + to keep the current local timestamp instead of extracting file timestamps + from the archive. - The :envvar:`CMAKE_COLOR_DIAGNOSTICS` environment was added to set - a default value for :variable:`CMAKE_COLOR_DIAGNOSTICS`. +Compilers +--------- -* The :module:`CPack` module no longer enables the SLA by default in the - :cpack_gen:`CPack DragNDrop Generator`. See policy :policy:`CMP0133` - and the :variable:`CPACK_DMG_SLA_USE_RESOURCE_FILE_LICENSE` variable. +* LLVM's `flang`_ Fortran compiler is now supported on some platforms, + with compiler id ``LLVMFlang``. -* The :cpack_gen:`CPack WIX Generator` gained a new variable, - :variable:`CPACK_WIX_ARCHITECTURE`, to specify the installer architecture - in order to support computers running Windows for ARM. +.. _`flang`: https://github.com/llvm/llvm-project/tree/main/flang -* CPack now supports the :variable:`CPACK_THREADS` option for ``zstd`` - compression when compiled with libarchive 3.6 or higher. It is - supported by official CMake binaries available on ``cmake.org``. +* ADSP compiler support (SHARC and Blackfin) now covers both CCES and + VDSP++ installations, with required configuration now done in the + compiler module itself rather than the ``Generic-ADSP`` platform module. -* :manual:`ctest(1)` gained a ``--test-output-truncation`` option (and - corresponding :variable:`CTEST_CUSTOM_TEST_OUTPUT_TRUNCATION` variable) to - specify the truncation mode once the maximum test output size has been - reached. Possible values are ``tail`` (default), ``middle`` or ``head``. -* :manual:`cmake-presets(7)` files now support schema version ``5``. -* :manual:`cmake-presets(7)` files gained support for specifying a - ``testOutputTruncation`` field in test presets, which specifies the truncation - mode once the maximum test output size has been reached. +Platforms +--------- -* The :variable:`CMAKE_CUDA_ARCHITECTURES` variable and associated - :prop_tgt:`CUDA_ARCHITECTURES` target property now support the - special ``native`` value to compile for the architectures(s) - of the host's GPU(s). +* A dedicated ``ADSP`` platform has been added + to replace the existing ``Generic-ADSP`` implementation. + This features automatic detection of the latest CCES/VDSP++ install + and compiler selection (``cc21k`` vs. ``ccblkfn``) + based off of the :variable:`CMAKE_SYSTEM_PROCESSOR` variable. + +Commands +-------- + +* The :command:`cmake_host_system_information` command, on Windows, + gained a ``QUERY WINDOWS_REGISTRY`` mode. + See its :ref:`Query Windows registry` section. * The :command:`cmake_language` command gained a new ``SET_DEPENDENCY_PROVIDER`` sub-command. When a dependency provider is set, @@ -95,14 +89,115 @@ Changes made since CMake 3.23 include the following. request directly, modify how the request is processed, or leave it to be fulfilled by the built-in implementation. See :ref:`dependency_providers`. -* The :command:`ExternalProject_Add` command gained a new - ``DOWNLOAD_EXTRACT_TIMESTAMP`` option for controlling whether the timestamps - of extracted contents are set to match those in the archive when the ``URL`` - download method is used. A new policy :policy:`CMP0135` was added to control - the default behavior when the new option is not used. +* The :command:`file(DOWNLOAD)` command gained options ``RANGE_START`` and + ``RANGE_END`` to specify a range of bytes to download. This can be + useful for downloading parts of big binary files. + +* The :command:`find_file`, :command:`find_library`, :command:`find_path`, + :command:`find_package`, and :command:`find_program` commands have gained + the ``NO_CMAKE_INSTALL_PREFIX`` option to control searching + :variable:`CMAKE_INSTALL_PREFIX`. + +* The :command:`find_file`, :command:`find_path`, :command:`find_library`, + :command:`find_program`, and :command:`find_package` commands gained the + capability to specify which Windows Registry views must be queried. + +* The :command:`find_package` command gained a ``GLOBAL`` option that + allows for the promotion of imported targets to global scope for the + duration of the :command:`find_package` call. + +* The :command:`if` command gained the capability to compare paths by + using the ``PATH_EQUAL`` operator. See policy :policy:`CMP0139`. -* Integration has been added between the :module:`FetchContent` module and the - :command:`find_package` command, enabling the following new capabilities: +Variables +--------- + +* The :variable:`CMAKE_COLOR_DIAGNOSTICS` variable was added to control + color diagnostics generated by compilers. This variable also controls + color build system messages with :ref:`Makefile Generators`, replacing + :variable:`CMAKE_COLOR_MAKEFILE`. + + The :envvar:`CMAKE_COLOR_DIAGNOSTICS` environment was added to set + a default value for :variable:`CMAKE_COLOR_DIAGNOSTICS`. + +* The :variable:`CMAKE_COMPILE_WARNING_AS_ERROR` variable and corresponding + :prop_tgt:`COMPILE_WARNING_AS_ERROR` target property were added to enable + compilation with a compiler-specific flag to treat warnings as errors, + such as ``-Werror``. + +* The :variable:`CMAKE_CUDA_ARCHITECTURES` variable and associated + :prop_tgt:`CUDA_ARCHITECTURES` target property now support the + special ``native`` value to compile for the architectures(s) + of the host's GPU(s). + +* The :variable:`CMAKE_FIND_PACKAGE_TARGETS_GLOBAL` variable was added to + toggle behavior of the :command:`find_package` command's new ``GLOBAL`` + option. + +* The :variable:`CMAKE_FIND_USE_INSTALL_PREFIX` variable was added to toggle + behavior of the :command:`find_file`, :command:`find_library`, + :command:`find_path`, :command:`find_package`, and :command:`find_program` + commands' new ``NO_CMAKE_INSTALL_PREFIX`` option. + +* The :variable:`CMAKE_PROJECT_TOP_LEVEL_INCLUDES` variable was added to allow + injecting custom code at the site of the first :command:`project` call, + after the host and target platform details have been determined. + +* The :variable:`CMAKE_TRY_COMPILE_NO_PLATFORM_VARIABLES` variable + was added to tell the :command:`try_compile` command not to + pass any platform variables to the test project. + +* The :variable:`CMAKE_VERIFY_INTERFACE_HEADER_SETS` variable and + corresponding :prop_tgt:`VERIFY_INTERFACE_HEADER_SETS` target property + were added to enable build rules that verify all headers in header sets + can be used on their own. + +* The :variable:`CMAKE_WATCOM_RUNTIME_LIBRARY` variable and + :prop_tgt:`WATCOM_RUNTIME_LIBRARY` target property were introduced to + select the runtime library used by compilers targeting the Watcom ABI. + See policy :policy:`CMP0136`. + +* The :variable:`CMAKE_XCODE_XCCONFIG` variable and corresponding + :prop_tgt:`XCODE_XCCONFIG` target property were added to tell + the :generator:`Xcode` generator to handle ``xcconfig`` files. + +Properties +---------- + +* The :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT` and + :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE` target properties + were added to express usage requirements affecting a consumer's + direct link dependencies. + +* The :prop_tgt:`INTERFACE_HEADER_SETS_TO_VERIFY` target property was + added to specify which header sets should be verified by + :prop_tgt:`VERIFY_INTERFACE_HEADER_SETS`. + +* The :prop_tgt:`LINK_LIBRARIES` target property now supports + the :genex:`$<LINK_ONLY:...>` generator expression. + See policy :policy:`CMP0131`. + +* The :prop_tgt:`VS_DOTNET_STARTUP_OBJECT` target property was added to + tell :ref:`Visual Studio Generators` which startup class shall be used + when the program or project is executed. This is necessary when more + than one ``static void Main(string[])`` function signature is available + in a managed .NET project. + +* The :prop_tgt:`VS_NO_COMPILE_BATCHING` target property was added to + tell :ref:`Visual Studio Generators` whether to disable compiler parallelism + and call the compiler with one source file at a time. + +Modules +------- + +* The :module:`ExternalProject` module :command:`ExternalProject_Add` + command gained a new ``DOWNLOAD_EXTRACT_TIMESTAMP`` option for + controlling whether the timestamps of extracted contents are set to + match those in the archive when the ``URL`` download method is used. + Policy :policy:`CMP0135` was added to enable the option by default. + +* The :module:`FetchContent` module and the :command:`find_package` command + now support integration capabilities: * :command:`FetchContent_MakeAvailable` can now try to satisfy a dependency by calling :command:`find_package` first. A new @@ -116,82 +211,52 @@ Changes made since CMake 3.23 include the following. directory where config package files can be located to facilitate these re-routed calls. -* Add the fields ``RANGE_START`` and ``RANGE_END`` to ``file(DOWNLOAD)``. - Those fields provide a convenient way to specify the range, passed to the - libcurl, which can be useful for downloading parts of big binary files. - -* The :command:`find_file`, :command:`find_library`, :command:`find_path`, - :command:`find_package`, and :command:`find_program` commands have gained - the `NO_CMAKE_INSTALL_PREFIX` option to control searching - `CMAKE_INSTALL_PREFIX`. - -* Adds support for :variable:`CMAKE_FIND_USE_INSTALL_PREFIX` to toggle - behavior of the :command:`find_file`, :command:`find_library`, :command:`find_path`, - :command:`find_package`, and :command:`find_program` commands new - `NO_CMAKE_INSTALL_PREFIX` option. - -* The :module:`FindGLUT` module no longer provides the undocumented - result variables ``GLUT_LIBRARY`` and ``GLUT_INCLUDE_PATH``. - -* :command:`find_file`, :command:`find_path`, :command:`find_library`, - :command:`find_program`, and :command:`find_package` commands gain the - capability to specify which registry views must be queried. - * The :module:`FindJNI` module now provides imported targets. * The :module:`FindMatlab` module :command:`matlab_add_mex` function gained a ``NO_IMPLICIT_LINK_TO_MATLAB_LIBRARIES`` option to disable automatic linking of MATLAB libraries. -* The :command:`find_package` command gained a `GLOBAL` option that - allows for the promotion of imported targets to global scope fur the - duration of the :command:`find_package` call. - -* Adds support for :variable:`CMAKE_FIND_PACKAGE_TARGETS_GLOBAL` to - toggle behavior of the :command:`find_package` command's new GLOBAL option +* The :module:`FindPkgConfig` module learned to find static libraries + in addition to the default search for shared libraries. + :command:`pkg_check_modules` gained a ``STATIC_TARGET`` option + to make the imported target reference static libraries. -* The :module:`FindZLIB` learned a new ``ZLIB_USE_STATIC_LIBS`` variable to +* The :module:`FindZLIB` gained a new ``ZLIB_USE_STATIC_LIBS`` variable to search only for static libraries. -* The :genex:`LINK_GROUP` generator expression was added to manage the grouping - of libraries during the link step. The variables - :variable:`CMAKE_<LANG>_LINK_GROUP_USING_<FEATURE>` and - :variable:`CMAKE_LINK_GROUP_USING_<FEATURE>` are used to define features - usable by the :genex:`LINK_GROUP` generator expression. +Generator Expressions +--------------------- * The :genex:`LINK_LIBRARY` generator expression was added to manage how - libraries are specified during the link step. The variables - :variable:`CMAKE_<LANG>_LINK_LIBRARY_USING_<FEATURE>` and + libraries are specified during the link step. + The variables :variable:`CMAKE_<LANG>_LINK_LIBRARY_USING_<FEATURE>` and :variable:`CMAKE_LINK_LIBRARY_USING_<FEATURE>` are used to define features - usable by the :genex:`LINK_LIBRARY` generator expression. Moreover, the - :prop_tgt:`LINK_LIBRARY_OVERRIDE` and - :prop_tgt:`LINK_LIBRARY_OVERRIDE_<LIBRARY>` target properties are available - to resolve incompatible features. - -* The :genex:`PATH_EQUAL` generator expression was added to manage path - comparisons. - -* The :genex:`PATH` generator expression was added to manage paths. + usable by the :genex:`LINK_LIBRARY` generator expression. + Moreover, the :prop_tgt:`LINK_LIBRARY_OVERRIDE` and + :prop_tgt:`LINK_LIBRARY_OVERRIDE_<LIBRARY>` target properties are + available to resolve incompatible features. -* A new predefined target `RERUN_CMAKE` is added for - :generator:`Green Hills MULTI` generator to easily rerun - CMake if any CMake files were updated. + The :genex:`LINK_LIBRARY` generator expression can link frameworks in + various ways when targeting ``Apple`` platforms. + The following features were added: -* The :command:`if` command gains the capability to compare paths by using the - ``PATH_EQUAL`` operator. See policy :policy:`CMP0139`. + * ``FRAMEWORK`` + * ``NEEDED_FRAMEWORK`` + * ``REEXPORT_FRAMEWORK`` + * ``WEAK_FRAMEWORK`` -* The :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT` and - :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE` target properties - were added to express usage requirements affecting a consumer's - direct link dependencies. + The :genex:`LINK_LIBRARY` generator expression can link libraries in + various ways when targeting ``Apple`` platforms. + The following features were added: -* The :prop_tgt:`LINK_LIBRARIES` target property now supports - the :genex:`$<LINK_ONLY:...>` generator expression. - See policy :policy:`CMP0131`. + * ``NEEDED_LIBRARY`` + * ``REEXPORT_LIBRARY`` + * ``WEAK_LIBRARY`` -* The :genex:`LINK_LIBRARY` generator expression gained the feature - ``WHOLE_ARCHIVE`` to force load of all members in a static library. This - feature is supported on the following target platforms: + The :genex:`LINK_LIBRARY` generator expression gained the feature + ``WHOLE_ARCHIVE`` to force load of all members in a static library. + This feature is supported on the following target platforms: * all ``Apple`` variants * ``Linux`` @@ -201,106 +266,79 @@ Changes made since CMake 3.23 include the following. * ``CYGWIN`` * ``MSYS`` -* LLVM's `flang`_ Fortran compiler is now supported, with compiler id ``LLVMFlang``. - -.. _`flang`: https://github.com/llvm/llvm-project/tree/main/flang - -* The :generator:`MSYS Makefiles` and :generator:`MinGW Makefiles` - generators, when a compiler is not explicitly specified, now select - the first compiler (of any name) found in directories listed by the - ``PATH`` environment variable. - -* With MSVC compilers, debug configurations now use ``-ZI`` by default - instead of ``/Zi``. See policy :policy:`CMP0138`. +* The :genex:`LINK_GROUP` generator expression was added to manage the + grouping of libraries during the link step. The variables + :variable:`CMAKE_<LANG>_LINK_GROUP_USING_<FEATURE>` and + :variable:`CMAKE_LINK_GROUP_USING_<FEATURE>` are used to define + features usable by the :genex:`LINK_GROUP` generator expression. -* The :module:`FindPkgConfig` module learned to find static libraries - in addition to the default search for shared libraries. - :command:`pkg_check_modules` gained a ``STATIC_TARGET`` option - to make the imported target reference static libraries. + The :genex:`LINK_GROUP` generator expression can manage, on ``Linux`` + and ``BSD`` systems, circular references among static libraries + by using the ``RESCAN`` feature. -* :manual:`cmake-presets(7)` files now support a ``${pathListSep}`` macro, - which expands to ``:`` or ``;`` based on the platform. +* The :genex:`PATH` generator expression was added to manage paths. -* The precompiled macOS binaries provided on - `cmake.org <https://cmake.org/download/>`_ no longer attach a SLA - to the ``.dmg`` packages. This was removed because macOS 12 deprecated - the tools used to attach ``.dmg`` resources. +* The :genex:`PATH_EQUAL` generator expression was added to manage path + comparisons. -* The deprecated ``PackageMaker`` :manual:`cpack(1)` generator has - been removed. +* The :genex:`TARGET_BUNDLE_DIR_NAME` generator expression + was added to evaluate to the name of the bundle directory + for a given bundle target. -* The :genex:`LINK_GROUP` generator expression gained the ability to manage, on - ``Linux`` and ``BSD`` systems, circular references between static libraries - by using ``RESCAN`` feature. +CTest +----- -* CMake no longer sets environment variables like :envvar:`CC`, :envvar:`CXX`, - etc. when enabling the corresponding language during the first CMake run in - a build directory. See policy :policy:`CMP0132`. +* :manual:`ctest(1)` gained a ``--test-output-truncation`` option (and + corresponding :variable:`CTEST_CUSTOM_TEST_OUTPUT_TRUNCATION` variable) to + specify the truncation mode once the maximum test output size has been + reached. Possible values are ``tail`` (default), ``middle`` or ``head``. -* Added the new :genex:`TARGET_BUNDLE_DIR_NAME` generator expression - which evaluates to the name of the bundle directory for a given bundle - target. +CPack +----- -* Add the field ``global_frame`` to the json-v1 trace format. This - frame tracks the depth of the call stack globally across all - ``CMakeLists.txt`` files involved in the trace, and will let tools - reconstruct stack traces that span from the top-level ``CMakeLists.txt`` - file of the project. +* The :cpack_gen:`CPack WIX Generator` gained a new variable, + :variable:`CPACK_WIX_ARCHITECTURE`, to specify the installer architecture + in order to support computers running Windows for ARM. -* Add the field ``line_end`` to the json-v1 trace format. This - field tells you the line in file ``file`` at which the function - call ends. Tools can use this new field, together with ``line`` - and ``file``, to map traces to lines of CMake source code. +* CPack now supports the :variable:`CPACK_THREADS` option for ``zstd`` + compression when compiled with libarchive 3.6 or higher. It is + supported by official CMake binaries available on ``cmake.org``. -* The :command:`try_compile` command - :ref:`whole-project <Try Compiling Whole Projects>` signature - now propagates platform variables. See policy :policy:`CMP0137`. +Deprecated and Removed Features +=============================== -* The :variable:`CMAKE_TRY_COMPILE_NO_PLATFORM_VARIABLES` variable - was added to tell the :command:`try_compile` command not to - pass any platform variables to the test project. +* The :module:`CPack` module no longer enables the SLA by default in the + :cpack_gen:`CPack DragNDrop Generator`. See policy :policy:`CMP0133` + and the :variable:`CPACK_DMG_SLA_USE_RESOURCE_FILE_LICENSE` variable. -* A new :prop_tgt:`VERIFY_INTERFACE_HEADER_SETS` target property was added, - which can be used to verify that all headers in header sets can be used on - their own. -* A new :variable:`CMAKE_VERIFY_INTERFACE_HEADER_SETS` variable was added, - which is used to initialize the :prop_tgt:`VERIFY_INTERFACE_HEADER_SETS` - target property. -* A new :prop_tgt:`INTERFACE_HEADER_SETS_TO_VERIFY` target property was added, - which can be used to specify which header sets should be verified by - :prop_tgt:`VERIFY_INTERFACE_HEADER_SETS`. +* The deprecated :cpack_gen:`CPack PackageMaker Generator` has been removed. -* The :prop_tgt:`VS_NO_COMPILE_BATCHING` target property was added to - tell :ref:`Visual Studio Generators` whether to disable compiler parallelism - and call the compiler with one c/cpp file at a time. +* The :module:`FindGLUT` module no longer provides the undocumented + result variables ``GLUT_LIBRARY`` and ``GLUT_INCLUDE_PATH``. -* The :prop_tgt:`VS_DOTNET_STARTUP_OBJECT` target property was added to - tell :ref:`Visual Studio Generators` which startup class shall be used - when the program or project is executed. This is necessary when more - than one ``static void Main(string[])`` function signature is available - in a managed .NET project. +Other Changes +============= -* :ref:`Visual Studio Generators` now support ``SYSTEM`` headers. +* With MSVC compilers, debug configurations now use ``-ZI`` by default + instead of ``/Zi``. See policy :policy:`CMP0138`. -* The :variable:`CMAKE_WATCOM_RUNTIME_LIBRARY` variable and - :prop_tgt:`WATCOM_RUNTIME_LIBRARY` target property were introduced to - select the runtime library used by compilers targeting the Watcom ABI. - See policy :policy:`CMP0136`. +* CMake no longer sets environment variables like :envvar:`CC`, :envvar:`CXX`, + etc. when enabling the corresponding language during the first CMake run in + a build directory. See policy :policy:`CMP0132`. -* Added the Target Property :prop_tgt:`COMPILE_WARNING_AS_ERROR` and the - Variable :variable:`CMAKE_COMPILE_WARNING_AS_ERROR` which initializes the - Target Property. If :prop_tgt:`COMPILE_WARNING_AS_ERROR` is true, it expands - to a different flag depending on the compiler such that any warnings at - compile will be treated as errors. +* The :generator:`MSYS Makefiles` and :generator:`MinGW Makefiles` + generators, when a compiler is not explicitly specified, now select + the first compiler (of any name) found in directories listed by the + ``PATH`` environment variable. -* :manual:`cmake(1)` gained the command-line option - ``--compile-no-warning-as-error`` which causes the values of - the :prop_tgt:`COMPILE_WARNING_AS_ERROR` target property and - :variable:`CMAKE_COMPILE_WARNING_AS_ERROR` variable to be ignored. +* The :command:`try_compile` command + :ref:`whole-project <Try Compiling Whole Projects>` signature + now propagates platform variables. See policy :policy:`CMP0137`. * The :command:`while` command now diagnoses errors during condition evaluation. See policy :policy:`CMP0130`. -* The Xcode generator learned to handle global and target specific - ``xcconfig`` files with the :variable:`CMAKE_XCODE_XCCONFIG` - variable and :prop_tgt:`XCODE_XCCONFIG` target property. +* The precompiled macOS binaries provided on + `cmake.org <https://cmake.org/download/>`_ no longer attach a SLA + to the ``.dmg`` packages. This was removed because macOS 12 deprecated + the tools used to attach ``.dmg`` resources. |