| CMake 3.28 Release Notes | |
| ************************ | |
| .. only:: html | |
| .. contents:: | |
| Changes made since CMake 3.27 include the following. | |
| New Features | |
| ============ | |
| Languages | |
| --------- | |
| * C++ 20 named modules are now supported by :ref:`Ninja Generators` | |
| and :ref:`Visual Studio Generators` for VS 2022 and newer, in combination | |
| with the MSVC 14.34 toolset (provided with VS 17.4) and newer, LLVM/Clang | |
| 16.0 and newer, and GCC 14 (after the 2023-09-20 daily bump) and newer. | |
| See :manual:`cmake-cxxmodules(7)` for details. | |
| * ``HIP`` language code may now be compiled for NVIDIA GPUs | |
| using the NVIDIA CUDA Compiler (NVCC). | |
| See the :variable:`CMAKE_HIP_PLATFORM` variable. | |
| Platforms | |
| --------- | |
| * On Apple platforms, ``.xcframework`` folders are now supported: | |
| * The :command:`find_library` command now finds ``.xcframework`` folders. | |
| * The :command:`target_link_libraries` command now supports | |
| linking against a ``.xcframework`` folder. | |
| * The :prop_tgt:`IMPORTED_LOCATION` target property of an imported | |
| library target may now be the path to a ``.xcframework`` folder. | |
| * Apple visionOS and its ``xros`` and ``xrsimulator`` SDKs are now supported. | |
| Compiling for Apple visionOS can be requested by setting | |
| :variable:`CMAKE_SYSTEM_NAME` to ``visionOS``. | |
| See :ref:`Cross Compiling for iOS, tvOS, visionOS, or watchOS` | |
| for more information. | |
| Presets | |
| ------- | |
| * :manual:`cmake-presets(7)` files now support schema version ``8``. | |
| It adds support for a ``$schema`` field. | |
| Compilers | |
| --------- | |
| * Cray Clang-based compilers are now supported with | |
| :variable:`compiler id <CMAKE_<LANG>_COMPILER_ID>` ``CrayClang``. | |
| * The OrangeC compiler is now supported with | |
| :variable:`compiler id <CMAKE_<LANG>_COMPILER_ID>` ``OrangeC``. | |
| Commands | |
| -------- | |
| * The :command:`add_custom_command` and :command:`add_custom_target` | |
| commands gained a ``JOB_SERVER_AWARE`` option. | |
| * The :command:`cmake_host_system_information` command gained a | |
| ``MSYSTEM_PREFIX`` query for the installation prefix of a MSYS | |
| or MinGW development environment on Windows hosts. | |
| * The :command:`set_property` command ``TEST`` mode gained a ``DIRECTORY`` | |
| option to set properties on tests in other directories. | |
| * The :command:`set_tests_properties` command gained a ``DIRECTORY`` | |
| option to set properties on tests in other directories. | |
| * The :command:`get_property` command ``TEST`` mode gained a ``DIRECTORY`` | |
| option to get properties on tests in other directories. | |
| * The :command:`get_test_property` command gained a ``DIRECTORY`` | |
| option to get properties on tests in other directories. | |
| Variables | |
| --------- | |
| * The :envvar:`CMAKE_CROSSCOMPILING_EMULATOR` environment variable | |
| was added to initialize the :variable:`CMAKE_CROSSCOMPILING_EMULATOR` | |
| cache variable. | |
| * The :variable:`CMAKE_HIP_PLATFORM` variable was added to specify | |
| the GPU platform for which HIP language sources are to be compiled | |
| (``amd`` or ``nvidia``). | |
| Properties | |
| ---------- | |
| * On imported shared libraries, the :prop_tgt:`IMPORTED_IMPLIB` target | |
| property may now be used without :prop_tgt:`IMPORTED_LOCATION`. | |
| This can be used to represent a stub library whose location should not | |
| be added as a runtime search path to dependents that link it. | |
| * The :prop_tgt:`IMPORTED_LOCATION` property of a macOS framework | |
| may now be a path to the ``.framework`` folder itself. | |
| * The :prop_tgt:`XCODE_EMBED_RESOURCES <XCODE_EMBED_<type>>` target property | |
| was added to tell the :generator:`Xcode` generator what targets to put in | |
| the ``Embed Resources`` build phase. | |
| Modules | |
| ------- | |
| * The :module:`ExternalProject` module now includes the | |
| ``BUILD_JOB_SERVER_AWARE`` option for the | |
| :command:`ExternalProject_Add` command. This option enables | |
| the integration of the GNU Make job server when using an | |
| explicit ``BUILD_COMMAND`` with certain :ref:`Makefile Generators`. | |
| Additionally, the :command:`ExternalProject_Add_Step` command | |
| has been updated to support the new ``JOB_SERVER_AWARE`` option. | |
| * The :module:`FetchContent` module's :command:`FetchContent_Declare` command | |
| gained an ``EXCLUDE_FROM_ALL`` option, which propagates through to the | |
| :command:`add_subdirectory` call made by | |
| :command:`FetchContent_MakeAvailable` for the dependency. | |
| * The :module:`FindCURL` module gained a ``CURL_USE_STATIC_LIBS`` hint | |
| to select static libraries. | |
| * The :module:`FindEXPAT` module gained an ``EXPAT_USE_STATIC_LIBS`` hint | |
| to select static libraries. | |
| * The :module:`FindPkgConfig` module :command:`pkg_get_variable` command | |
| gained a ``DEFINE_VARIABLES`` option to pass variables to ``pkg-config``. | |
| Generator Expressions | |
| --------------------- | |
| * The :manual:`generator expressions <cmake-generator-expressions(7)>` | |
| :genex:`$<IF:...>`, :genex:`$<AND:...>`, and :genex:`$<OR:...>` | |
| short-circuit to avoid unnecessary evaluation of parameters. | |
| CTest | |
| ----- | |
| * CTest may now take a :ref:`dynamically-generated resource spec file | |
| <ctest-resource-dynamically-generated-spec-file>`, which can be specified by the | |
| :prop_test:`GENERATED_RESOURCE_SPEC_FILE` test property. | |
| Deprecated and Removed Features | |
| =============================== | |
| * The :command:`exec_program` command, which has been deprecated | |
| since CMake 3.0, has been removed by policy :policy:`CMP0153`. | |
| Use the :command:`execute_process` command instead. | |
| * The :generator:`Visual Studio 11 2012` generator has been removed. | |
| * The :generator:`Visual Studio 12 2013` generator is now deprecated | |
| and will be removed in a future version of CMake. | |
| * The :prop_tgt:`IOS_INSTALL_COMBINED` target property and corresponding | |
| :variable:`CMAKE_IOS_INSTALL_COMBINED` variable have been deprecated. | |
| Their functionality does not make sense on Apple Silicon hosts. | |
| * The :generator:`Xcode` generator will now issue a fatal error if | |
| the Legacy Build System has been selected for Xcode 14 and | |
| newer. Those Xcode versions dropped support for the Legacy Build | |
| System and expect the project to be set-up for their current | |
| Build System. | |
| Other Changes | |
| ============= | |
| * Generated files, in targets using :ref:`file sets`, are now considered | |
| private by default. Generated public headers must be specified using | |
| file sets. This allows :ref:`Ninja Generators` to produce more | |
| efficient build graphs. See policy :policy:`CMP0154`. | |
| * The :command:`find_library`, :command:`find_path`, and :command:`find_file` | |
| commands no longer search in installation prefixes derived from the ``PATH`` | |
| environment variable. This behavior was added in CMake 3.3 to support | |
| MSYS and MinGW (``MSYSTEM``) development environments on Windows, but | |
| it can search undesired prefixes that happen to be in the ``PATH`` for | |
| unrelated reasons. Users who keep some ``<prefix>/bin`` directories in | |
| the ``PATH`` just for their tools do not necessarily want any corresponding | |
| ``<prefix>/lib`` or ``<prefix>/include`` directories searched. | |
| The behavior was reverted for non-Windows platforms by CMake 3.6. | |
| Now it has been reverted on Windows platforms too. | |
| One may set the ``CMAKE_PREFIX_PATH`` environment variable with a | |
| :ref:`semicolon-separated list <CMake Language Lists>` of prefixes | |
| that are to be searched. | |
| * When using MinGW tools in a ``MSYSTEM`` environment on Windows, | |
| the ``$MSYSTEM_PREFIX/local`` and ``$MSYSTEM_PREFIX`` prefixes are | |
| now added to :variable:`CMAKE_SYSTEM_PREFIX_PATH`. | |
| * The precompiled Linux ``x86_64`` binaries provided on | |
| `cmake.org <https://cmake.org/download/>`_ now require GLIBC 2.17 or higher. | |
| Updates | |
| ======= | |
| Changes made since CMake 3.28.0 include the following. | |
| 3.28.1, 3.28.2, 3.28.3 | |
| ---------------------- | |
| * These versions made no changes to documented features or interfaces. | |
| Some implementation updates were made to support ecosystem changes | |
| and/or fix regressions. | |
| 3.28.4 | |
| ------ | |
| * Apple visionOS support has been updated for the official Xcode 15.2 | |
| release of the ``xros`` and ``xrsimulator`` SDKs. | |
| 3.28.5 | |
| ------ | |
| * This version made no changes to documented features or interfaces. | |
| Some implementation updates were made to C++ modules support. | |
| 3.28.6 | |
| ------ | |
| * This version made no changes to documented features or interfaces. | |
| Some implementation updates were made to support ecosystem changes | |
| and/or fix regressions. | |