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|
CMake 3.29 Release Notes
************************
.. only:: html
.. contents::
Changes made since CMake 3.28 include the following.
New Features
============
Command-Line
------------
* :manual:`cmake(1)` :option:`-E cat <cmake-E cat>` can now print the standard
input by passing the ``-`` argument.
Generators
----------
* :ref:`Visual Studio Generators` now support selecting between the
Intel oneAPI Fortran compiler (``ifx``) and the Intel classic Fortran
compiler (``ifort``) using a ``fortran=`` field in
:variable:`CMAKE_GENERATOR_TOOLSET`.
File-Based API
--------------
* The :manual:`cmake-file-api(7)` "codemodel" version 2 ``version`` field has
been updated to 2.7.
* The :manual:`cmake-file-api(7)` "codemodel" version 2 "target" object gained
a new "launchers" field.
Compilers
---------
* The LLVM/Clang GNU-like frontend on Windows (``clang++``) may now be used
to compile ``CUDA`` language sources.
* Compilers targeting the GNU ABI on Windows (MinGW) may now be used to
compile Objective C (``OBJC``) and Objective C++ (``OBJCXX``). These
include GNU compilers (``gcc`` and ``g++``) and the LLVM/Clang GNU-like
frontends (``clang`` and ``clang++``).
* TI Clang-based compilers are now supported with
:variable:`compiler id <CMAKE_<LANG>_COMPILER_ID>` ``TIClang``.
Commands
--------
* The :ref:`add_custom_command(TARGET) <add_custom_command(TARGET)>`
signature now supports adding build events through :ref:`Alias Targets`.
* The :command:`cmake_language(EXIT)` sub-command was added to terminate
:option:`cmake -P` scripts with a specified exit code.
* The :command:`export(SETUP)` sub-command was added to configure export sets.
Its ``TARGET`` option's ``XCFRAMEWORK_LOCATION`` setting specifies the
location of a ``.xcframework`` that can be substituted for an installed
target.
* The :command:`if` command gained new tests ``IS_READABLE``, ``IS_WRITABLE``
and ``IS_EXECUTABLE`` to check file or directory permissions.
Variables
---------
* The :envvar:`CMAKE_INSTALL_PREFIX` environment variable was added to
provide a default value for the :variable:`CMAKE_INSTALL_PREFIX` variable.
* The :variable:`CMAKE_LINKER_TYPE` variable and corresponding
:prop_tgt:`LINKER_TYPE` target property were added to specify
what linker to use with some toolchains.
* The :variable:`CMAKE_<LANG>_COMPILER_LINKER`,
:variable:`CMAKE_<LANG>_COMPILER_LINKER_ID`,
:variable:`CMAKE_<LANG>_COMPILER_LINKER_VERSION` and
:variable:`CMAKE_<LANG>_COMPILER_LINKER_FRONTEND_VARIANT` variables
were added to describe the linker used by the language's link step.
* The :variable:`CMAKE_PROJECT_INCLUDE`,
:variable:`CMAKE_PROJECT_INCLUDE_BEFORE`,
:variable:`CMAKE_PROJECT_<PROJECT-NAME>_INCLUDE`, and
:variable:`CMAKE_PROJECT_<PROJECT-NAME>_INCLUDE_BEFORE` variables learned
to support a :ref:`semicolon-separated list <CMake Language Lists>` of
CMake language files to be included sequentially. These variables can also
reference module names to be found in :variable:`CMAKE_MODULE_PATH` or
builtin to CMake.
* The :variable:`CMAKE_SKIP_TEST_ALL_DEPENDENCY` variable was added
to control whether the ``test`` (or ``RUN_TESTS``) buildsystem
target depends on the ``all`` (or ``ALL_BUILD``) target.
* A :variable:`CMAKE_TEST_LAUNCHER` variable and corresponding
:prop_tgt:`TEST_LAUNCHER` target property were added to specify
a launcher to be used by executable targets when invoked by
tests added by the :command:`add_test` command.
Properties
----------
* The :prop_tgt:`CROSSCOMPILING_EMULATOR` target property now
supports :manual:`generator expressions <cmake-generator-expressions(7)>`.
* The :prop_tgt:`UNITY_BUILD` target property now supports the
Objective C (``OBJC``) and Objective C++ (``OBJCXX``) languages.
* The :prop_tgt:`XCODE_EMBED_XPC_SERVICES <XCODE_EMBED_<type>>` target property
was added to tell the :generator:`Xcode` generator what targets to put in
the ``Embed XPC Resources`` build phase.
Modules
-------
* The :module:`CMakePackageConfigHelpers` module gained new
:command:`generate_apple_platform_selection_file` and
:command:`generate_apple_architecture_selection_file` functions, which can
be used to generate a file that includes another Apple-platform-specific
file or the includes an architecture-specific implementation of a package
for an Apple platform, respectively.
* The :module:`FindOpenGL` module learned to find a GLU include
directory different than the GL include directory. A new
``OPENGL_INCLUDE_DIRS`` result variable provides all include
directories.
CTest
-----
* :manual:`ctest(1)` gained a :option:`--http-header <ctest --http-header>`
option to add custom headers on submission to CDash.
* :manual:`ctest(1)` gained the :option:`--tests-from-file <ctest
--tests-from-file>` and :option:`--exclude-from-file <ctest
--exclude-from-file>` options to run or exclude tests named in a file.
* :manual:`ctest(1)` now supports :ref:`job server integration
<ctest-job-server-integration>` on POSIX systems.
* The :option:`ctest -j` option may now be given without a value to let
ctest choose a default level of parallelism, or with ``0`` to let ctest
use unbounded parallelism. The corresponding :envvar:`CTEST_PARALLEL_LEVEL`
environment variable, if set to the empty string, is now equivalent to
passing ``-j`` with no value.
* The :command:`ctest_test` command gained options
``INCLUDE_FROM_FILE`` and ``EXCLUDE_FROM_FILE`` to run or exclude
tests named in a file.
CPack
-----
* The :cpack_gen:`CPack DEB Generator` :variable:`CPACK_DEBIAN_FILE_NAME`
variable may now be set without any suffix, and the ``.deb`` suffix
will be added automatically.
* The :cpack_gen:`CPack RPM Generator` :variable:`CPACK_RPM_FILE_NAME`
variable may now be set without any suffix, and the ``.rpm`` suffix
will be added automatically.
* The :cpack_gen:`CPack WIX Generator` gained a new variable,
:variable:`CPACK_WIX_INSTALL_SCOPE`, to control the
``InstallScope`` property of WiX MSI installers.
Other Changes
=============
* CMake learned to de-duplicate libraries on link lines based on linker
capabilities. See policy :policy:`CMP0156`.
* The :command:`add_test` command now honors
:variable:`CMAKE_CROSSCOMPILING_EMULATOR` only when cross-compiling.
See policy :policy:`CMP0158`.
* On Windows, when targeting the MSVC ABI, the :command:`find_library` command
now accepts ``.a`` file names after first considering ``.lib``. This is
symmetric with existing behavior when targeting the GNU ABI, in which the
command accepts ``.lib`` file names after first considering ``.a``.
* On Windows, when targeting the MSVC ABI, the :command:`find_library` command
now considers ``.dll.lib`` file names before ``.lib``. This is the default
suffix for DLL import libraries created by Rust toolchains for the MSVC ABI.
* The :generator:`Ninja` and :generator:`NMake Makefiles` generators now use
the ``-external:I`` flag for system includes when using IntelLLVM as of
version 2021.4. The ``-external:W0`` flag is also used as of version 2022.2.
* The :command:`create_test_sourcelist` command now provides a full path to
the generated driver source file.
* The :variable:`CPACK_PRODUCTBUILD_DOMAINS` variable now defaults to true.
See policy :policy:`CMP0161`.
Updates
=======
Changes made since CMake 3.29.0 include the following.
3.29.1
------
* The :variable:`CMAKE_LINKER_TYPE` variable and corresponding
:prop_tgt:`LINKER_TYPE` target property now work with compilers
for the ``Swift`` language.
3.29.2, 3.29.3, 3.29.4
----------------------
* These versions made no changes to documented features or interfaces.
Some implementation updates were made to support ecosystem changes
and/or fix regressions.
3.29.5
------
* The :cpack_gen:`CPack WIX Generator`'s :variable:`CPACK_WIX_INSTALL_SCOPE`
variable, new in 3.29, now defaults to ``NONE``. This restores
compatibility with behavior of 3.28 and below: without a custom WiX
template, it produces installers that only create start menu and
uninstall entries for the current user, even though they install
for all users.
In 3.29.0 through 3.29.4, ``CPACK_WIX_INSTALL_SCOPE`` defaulted to
``perMachine``. This created MSI installers that create start menu
and uninstall entries for all users by default. While this behavior
is better on its own, these installers do not cleanly replace existing
installations created with MSI installers produced by 3.28 and below.
3.29.5 reverts the default for compatibility. Projects may transition
to ``perMachine`` on their own schedule by setting
``CPACK_WIX_INSTALL_SCOPE``.
3.29.6
------
* This version made no changes to documented features or interfaces.
Some implementation updates were made to support ecosystem changes
and/or fix regressions.
|
