1 CMake 3.24 Release Notes
2 ************************
8 Changes made since CMake 3.23 include the following.
16 * :manual:`cmake-presets(7)` files now support schema version ``5``.
18 * :manual:`cmake-presets(7)` files now support a ``${pathListSep}`` macro,
19 which expands to ``:`` or ``;`` based on the platform.
21 * :manual:`cmake-presets(7)` files gained support for specifying a
22 ``testOutputTruncation`` field in test presets, which specifies the
23 truncation mode once the maximum test output size has been reached.
28 * The :generator:`Green Hills MULTI` generator now generates build
29 rules to re-run CMake if any CMake files are updated.
31 * The :ref:`Visual Studio Generators` now support ``SYSTEM`` headers
32 when using VS 2019 Update 11 or later.
37 * :manual:`cmake(1)` gained the :option:`--fresh <cmake --fresh>` command-line
38 option to remove any existing ``CMakeCache.txt`` file and associated ``CMakeFiles/``
39 directory, when configuring a build tree, thus starting a new configuration
40 as if the build tree were freshly created.
42 * :manual:`cmake(1)` gained the
43 :option:`--compile-no-warning-as-error <cmake --compile-no-warning-as-error>`
44 command-line option which causes the effects of the
45 :prop_tgt:`COMPILE_WARNING_AS_ERROR` target property and
46 :variable:`CMAKE_COMPILE_WARNING_AS_ERROR` variable to be ignored.
48 * The :manual:`cmake(1)` :option:`--trace=json-v1 <cmake --trace>` trace
49 format gained fields ``global_frame`` and ``line_end``.
51 * The :manual:`cmake(1)` :option:`-E <cmake -E>` commands :option:`cat <cmake-E cat>`
52 and :option:`env <cmake-E env>` learned to respect a double dash
53 (:option:`-- <cmake-E_env -->`) argument that acts as a delimiter indicating
54 the end of options. Any following arguments are treated as operands/positional
55 arguments, even if they begin with a dash ``-`` character.
57 * The :manual:`cmake(1)` :option:`-E tar <cmake-E tar>` command gained the
58 :option:`--touch <cmake-E_tar --touch>` option
59 to keep the current local timestamp instead of extracting file timestamps
65 * LLVM's `flang`_ Fortran compiler is now supported on some platforms,
66 with compiler id ``LLVMFlang``.
68 .. _`flang`: https://github.com/llvm/llvm-project/tree/main/flang
70 * ADSP compiler support (SHARC and Blackfin) now covers both CCES and
71 VDSP++ installations, with required configuration now done in the
72 compiler module itself rather than the ``Generic-ADSP`` platform module.
77 * A dedicated ``ADSP`` platform has been added
78 to replace the existing ``Generic-ADSP`` implementation.
79 This features automatic detection of the latest CCES/VDSP++ install
80 and compiler selection (``cc21k`` vs. ``ccblkfn``)
81 based off of the :variable:`CMAKE_SYSTEM_PROCESSOR` variable.
86 * The :command:`cmake_host_system_information` command, on Windows,
87 gained a ``QUERY WINDOWS_REGISTRY`` mode.
88 See its :ref:`Query Windows registry` section.
90 * The :command:`cmake_language` command gained a new
91 ``SET_DEPENDENCY_PROVIDER`` sub-command. When a dependency provider is set,
92 calls to :command:`find_package` and :command:`FetchContent_MakeAvailable`
93 can be redirected through a custom command, which can choose to fulfill the
94 request directly, modify how the request is processed, or leave it to be
95 fulfilled by the built-in implementation. See :ref:`dependency_providers`.
97 * The :command:`file(DOWNLOAD)` command gained options ``RANGE_START`` and
98 ``RANGE_END`` to specify a range of bytes to download. This can be
99 useful for downloading parts of big binary files.
101 * The :command:`find_file`, :command:`find_path`, :command:`find_library`,
102 :command:`find_program`, and :command:`find_package` commands gained the
103 ``NO_CMAKE_INSTALL_PREFIX`` option to control searching
104 :variable:`CMAKE_INSTALL_PREFIX`.
106 * The :command:`find_file`, :command:`find_path`, :command:`find_library`,
107 :command:`find_program`, and :command:`find_package` commands gained the
108 ability to specify which Windows Registry views must be queried.
110 * The :command:`find_package` command gained a ``GLOBAL`` option that
111 allows for the promotion of imported targets to global scope for the
112 duration of the :command:`find_package` call.
114 * The :command:`if` command gained the capability to compare paths by
115 using the ``PATH_EQUAL`` operator. See policy :policy:`CMP0139`.
120 * The :variable:`CMAKE_COLOR_DIAGNOSTICS` variable was added to control
121 color diagnostics generated by compilers. This variable also controls
122 color build system messages with :ref:`Makefile Generators`, replacing
123 :variable:`CMAKE_COLOR_MAKEFILE`.
125 The :envvar:`CMAKE_COLOR_DIAGNOSTICS` environment variable was added to set
126 a default value for :variable:`CMAKE_COLOR_DIAGNOSTICS`.
128 * The :variable:`CMAKE_COMPILE_WARNING_AS_ERROR` variable and corresponding
129 :prop_tgt:`COMPILE_WARNING_AS_ERROR` target property were added to enable
130 compilation with a compiler-specific flag to treat warnings as errors,
133 * The :variable:`CMAKE_CUDA_ARCHITECTURES` variable and associated
134 :prop_tgt:`CUDA_ARCHITECTURES` target property now support the
135 special ``native`` value to compile for the architectures(s)
136 of the host's GPU(s).
138 * The :variable:`CMAKE_FIND_PACKAGE_TARGETS_GLOBAL` variable was added to
139 toggle behavior of the :command:`find_package` command's new ``GLOBAL``
142 * The :variable:`CMAKE_FIND_USE_INSTALL_PREFIX` variable was added to toggle
143 behavior of the :command:`find_file`, :command:`find_library`,
144 :command:`find_path`, :command:`find_package`, and :command:`find_program`
145 commands' new ``NO_CMAKE_INSTALL_PREFIX`` option.
147 * The :variable:`CMAKE_PROJECT_TOP_LEVEL_INCLUDES` variable was added to allow
148 injecting custom code at the site of the first :command:`project` call,
149 after the host and target platform details have been determined.
151 * The :variable:`CMAKE_TRY_COMPILE_NO_PLATFORM_VARIABLES` variable
152 was added to tell the :command:`try_compile` command not to
153 pass any platform variables to the test project.
155 * The :variable:`CMAKE_VERIFY_INTERFACE_HEADER_SETS` variable and
156 corresponding :prop_tgt:`VERIFY_INTERFACE_HEADER_SETS` target property
157 were added to enable build rules that verify all headers in header sets
158 can be used on their own.
160 * The :variable:`CMAKE_VS_NO_COMPILE_BATCHING` variable and corresponding
161 :prop_tgt:`VS_NO_COMPILE_BATCHING` target property were added to
162 tell :ref:`Visual Studio Generators` whether to disable compiler
163 parallelism and call the compiler with one source file at a time.
165 * The :variable:`CMAKE_WATCOM_RUNTIME_LIBRARY` variable and
166 :prop_tgt:`WATCOM_RUNTIME_LIBRARY` target property were introduced to
167 select the runtime library used by compilers targeting the Watcom ABI.
168 See policy :policy:`CMP0136`.
170 * The :variable:`CMAKE_XCODE_XCCONFIG` variable and corresponding
171 :prop_tgt:`XCODE_XCCONFIG` target property were added to tell
172 the :generator:`Xcode` generator to handle ``xcconfig`` files.
177 * The :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT` and
178 :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE` target properties
179 were added to express usage requirements affecting a consumer's
180 direct link dependencies.
182 * The :prop_tgt:`INTERFACE_HEADER_SETS_TO_VERIFY` target property was
183 added to specify which header sets should be verified by
184 :prop_tgt:`VERIFY_INTERFACE_HEADER_SETS`.
186 * The :prop_tgt:`LINK_LIBRARIES` target property now supports
187 the :genex:`$<LINK_ONLY:...>` generator expression.
188 See policy :policy:`CMP0131`.
190 * The :prop_tgt:`VS_DOTNET_STARTUP_OBJECT` target property was added to
191 tell :ref:`Visual Studio Generators` which startup class shall be used
192 when the program or project is executed. This is necessary when more
193 than one ``static void Main(string[])`` function signature is available
194 in a managed .NET project.
199 * The :module:`ExternalProject` module :command:`ExternalProject_Add`
200 command gained a new ``DOWNLOAD_EXTRACT_TIMESTAMP`` option for
201 controlling whether the timestamps of extracted contents are set to
202 match those in the archive when the ``URL`` download method is used.
203 Policy :policy:`CMP0135` was added to enable the option by default.
205 * The :module:`FetchContent` module and the :command:`find_package` command
206 now support integration capabilities:
208 * :command:`FetchContent_MakeAvailable` can now try to satisfy a dependency
209 by calling :command:`find_package` first. A new
210 :variable:`FETCHCONTENT_TRY_FIND_PACKAGE_MODE` variable controls whether
211 this is done by default for all dependencies, is opt-in per dependency,
212 or is disabled entirely.
214 * :command:`find_package` can be re-routed to call
215 :command:`FetchContent_MakeAvailable` instead. A new read-only
216 :variable:`CMAKE_FIND_PACKAGE_REDIRECTS_DIR` variable points to a
217 directory where config package files can be located to facilitate these
220 * The :module:`FindJNI` module now provides imported targets.
222 * The :module:`FindMatlab` module :command:`matlab_add_mex` function
223 gained a ``NO_IMPLICIT_LINK_TO_MATLAB_LIBRARIES`` option to disable
224 automatic linking of MATLAB libraries.
226 * The :module:`FindVulkan` module now supports components to select which
227 VulkanSDK tool and libraries to find in addition to the Vulkan SDK headers
230 * The :module:`FindZLIB` gained a new ``ZLIB_USE_STATIC_LIBS`` variable to
231 search only for static libraries.
233 Generator Expressions
234 ---------------------
236 * The :genex:`LINK_LIBRARY` generator expression was added to manage how
237 libraries are specified during the link step.
238 The :variable:`CMAKE_<LANG>_LINK_LIBRARY_USING_<FEATURE>` and
239 :variable:`CMAKE_LINK_LIBRARY_USING_<FEATURE>` variables are used to define
240 features usable by the :genex:`LINK_LIBRARY` generator expression.
241 Moreover, the :prop_tgt:`LINK_LIBRARY_OVERRIDE` and
242 :prop_tgt:`LINK_LIBRARY_OVERRIDE_<LIBRARY>` target properties are
243 available to resolve incompatible features.
245 The :genex:`LINK_LIBRARY` generator expression can link frameworks in
246 various ways when targeting ``Apple`` platforms.
247 The following features were added:
250 * ``NEEDED_FRAMEWORK``
251 * ``REEXPORT_FRAMEWORK``
254 The :genex:`LINK_LIBRARY` generator expression can link libraries in
255 various ways when targeting ``Apple`` platforms.
256 The following features were added:
259 * ``REEXPORT_LIBRARY``
262 The :genex:`LINK_LIBRARY` generator expression gained the feature
263 ``WHOLE_ARCHIVE`` to force load of all members in a static library.
264 This feature is supported on the following target platforms:
266 * all ``Apple`` variants
268 * all ``BSD`` variants
274 * The :genex:`LINK_GROUP` generator expression was added to manage the
275 grouping of libraries during the link step. The
276 :variable:`CMAKE_<LANG>_LINK_GROUP_USING_<FEATURE>` and
277 :variable:`CMAKE_LINK_GROUP_USING_<FEATURE>` variables are used to define
278 features usable with the :genex:`LINK_GROUP` generator expression.
279 This release defines the ``RESCAN`` feature, which can be used to handle
280 circular references among static libraries when using toolchains for
281 Linux, BSD, SunOS and GNU toolchains for Windows.
283 * The :genex:`PATH` generator expression was added to manage paths.
285 * The :genex:`PATH_EQUAL` generator expression was added to manage path
288 * The :genex:`TARGET_BUNDLE_DIR_NAME` generator expression
289 was added to evaluate to the name of the bundle directory
290 for a given bundle target.
295 * :manual:`ctest(1)` gained a
296 :option:`--test-output-truncation <ctest --test-output-truncation>` option
297 (and corresponding :variable:`CTEST_CUSTOM_TEST_OUTPUT_TRUNCATION` variable)
298 to specify the truncation mode once the maximum test output size has been
299 reached. Possible values are ``tail`` (default), ``middle`` or ``head``.
304 * The :cpack_gen:`CPack WIX Generator` gained a new variable,
305 :variable:`CPACK_WIX_ARCHITECTURE`, to specify the installer architecture
306 in order to support computers running Windows for ARM.
308 * CPack now supports the :variable:`CPACK_THREADS` option for ``zstd``
309 compression when compiled with libarchive 3.6 or higher. It is
310 supported by official CMake binaries available on `cmake.org`_.
312 Deprecated and Removed Features
313 ===============================
315 * The :module:`CPack` module no longer enables the SLA by default in the
316 :cpack_gen:`CPack DragNDrop Generator`. See policy :policy:`CMP0133`
317 and the :variable:`CPACK_DMG_SLA_USE_RESOURCE_FILE_LICENSE` variable.
319 * The deprecated :cpack_gen:`CPack PackageMaker Generator` has been removed.
321 * The :module:`FindGLUT` module no longer provides the undocumented
322 ``GLUT_LIBRARY`` and ``GLUT_INCLUDE_PATH`` result variables.
324 * The :module:`FindVulkan` module no longer silently ignores unknown
325 components requested by a ``find_package(Vulkan REQUIRED ...)`` call.
326 With the addition of support for components, requests for unknown
327 components now produce an error.
332 * CMake no longer sets environment variables like :envvar:`CC`, :envvar:`CXX`,
333 etc. when enabling the corresponding language during the first CMake run in
334 a build directory. See policy :policy:`CMP0132`.
336 * The :module:`CheckIPOSupported` module :command:`check_ipo_supported`
337 command now uses the caller's :variable:`CMAKE_<LANG>_FLAGS`
338 and :variable:`CMAKE_<LANG>_FLAGS_<CONFIG>` values.
339 See policy :policy:`CMP0138`.
341 * The :generator:`MSYS Makefiles` and :generator:`MinGW Makefiles`
342 generators, when a compiler is not explicitly specified, now select
343 the first compiler (of any name) found in directories listed by the
344 ``PATH`` environment variable.
346 * The :command:`try_compile` command
347 :ref:`whole-project <Try Compiling Whole Projects>` signature
348 now propagates platform variables. See policy :policy:`CMP0137`.
350 * The :command:`while` command now diagnoses errors during condition
351 evaluation. See policy :policy:`CMP0130`.
353 * The precompiled macOS binaries provided on `cmake.org`_ no longer attach a
354 SLA to the ``.dmg`` packages. This was removed because macOS 12 deprecated
355 the tools used to attach ``.dmg`` resources.
357 * A precompiled Windows ``arm64`` binary is now provided on `cmake.org`_.
359 .. _`cmake.org`: https://cmake.org/download/
364 Changes made since CMake 3.24.0 include the following.
369 * These versions made no changes to documented features or interfaces.
370 Some implementation updates were made to support ecosystem changes
371 and/or fix regressions.
376 * The ``LLVMFlang`` Fortran compiler support added in 3.24.0 has been extended:
378 * It now supports mixed-language linking between Fortran and C or CXX.
379 * It now supports the GNU ABI (MinGW) on Windows, but not yet the MSVC ABI.
381 * Some implementation updates were made to support ecosystem changes
382 and/or fix regressions.