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CMake 3.28 Release Notes
************************
.. only:: html
.. contents::
Changes made since CMake 3.27 include the following.
* CMake learned about Apple visionOS and its `xros` and `xrsimulator` SDKs.
Compiling for Apple visionOS can be requested by setting
:variable:`CMAKE_SYSTEM_NAME` to ``visionOS``. For more
information see :manual:`cmake-toolchains(7)`.
* The :envvar:`CMAKE_CROSSCOMPILING_EMULATOR` environment variable
was added to initialize the :variable:`CMAKE_CROSSCOMPILING_EMULATOR`
cache variable.
* The :command:`add_custom_command` and :command:`add_custom_target`
commands gained a ``JOB_SERVER_AWARE`` option.
* Cray Clang-based compilers are now supported with
:variable:`compiler id <CMAKE_<LANG>_COMPILER_ID>` ``CrayClang``.
* 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.
* 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.
* 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.
* 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 :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:`ExternalProject` module now declares ``BYPRODUCTS`` for the
downloaded file for generated ``download`` steps. Previously, if multiple
external projects downloaded to the same file, hash verification could fail.
Now, when using the :ref:`Ninja Generators`, this scenario is detected and
Ninja will raise an error stating that multiple rules generate the same file.
* 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.
* 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 :module:`FindCURL` module gained a ``CURL_USE_STATIC_LIBS`` hint
to select static libraries.
* The :module:`FindEXPAT` module gained a ``EXPAT_USE_STATIC_LIBS`` hint
to select static libraries.
* The :module:`FindPkgConfig` module :command:`pkg_get_variable` function
gained a ``DEFINE_VARIABLES`` option to pass variables to ``pkg-config``.
* 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 that 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.
* :manual:`generator expressions <cmake-generator-expressions(7)>`
short-circuit to avoid unnecessary evaluation of parameters.
* ``HIP`` language code may now be compiled for NVIDIA GPUs
using the NVIDIA CUDA Compiler (NVCC).
* 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``).
* 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.
* 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
the location of the framework folder itself.
* 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 OrangeC compiler is now supported with
:variable:`compiler id <CMAKE_<LANG>_COMPILER_ID>` ``OrangeC``.
* :manual:`cmake-presets(7)` files now support schema version ``8``.
It adds support for a ``$schema`` field.
* The precompiled Linux ``x86_64`` binaries provided on
`cmake.org <https://cmake.org/download/>`_ now require GLIBC 2.17 or higher.
* The :generator:`Visual Studio 11 2012` generator has been removed.
* The ``TEST`` mode of the :command:`set_property` command gained a
``DIRECTORY`` sub-option, which allows you to set properties on tests in
other directories.
* The :command:`set_tests_properties` command gained a ``DIRECTORY``
sub-option, which allows you to set properties on tests in other
directories.
* The ``TEST`` mode of the :command:`get_property` command gained a
``DIRECTORY`` sub-option, which allows you to get properties on tests in
other directories.
* The :command:`get_test_property` command gained a ``DIRECTORY``
sub-option, which allows you to get properties on tests in other
directories.
* The :generator:`Visual Studio 12 2013` generator is now deprecated
and will be removed in a future version of CMake.
* The :command:`find_library` command can now find ``.xcframework`` folders on
Apple platforms.
* Targets may now link against an ``.xcframework`` folder in
:command:`target_link_libraries`.
* The :prop_tgt:`IMPORTED_LOCATION` property of a target may now be an
``.xcframework`` folder.
* 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.
* 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 being set-up for their current
Build System.
|
