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|
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.
|
