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 ``--fresh`` command-line option to remove
38 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 ``--compile-no-warning-as-error`` command-line
43 option which causes the effects of the :prop_tgt:`COMPILE_WARNING_AS_ERROR`
44 target property and :variable:`CMAKE_COMPILE_WARNING_AS_ERROR` variable
47 * The :manual:`cmake(1)` ``--trace=json-v1`` trace format gained fields
48 ``global_frame`` and ``line_end``.
50 * The :manual:`cmake(1)` ``-E`` commands ``cat`` and ``env`` learned to respect
51 a double dash (``--``) argument that acts as a delimiter indicating the end of
52 options. Any following arguments are treated as operands/positional arguments,
53 even if they begin with a dash ``-`` character.
55 * The :manual:`cmake(1)` ``-E tar`` command gained the ``--touch`` option
56 to keep the current local timestamp instead of extracting file timestamps
62 * LLVM's `flang`_ Fortran compiler is now supported on some platforms,
63 with compiler id ``LLVMFlang``.
65 .. _`flang`: https://github.com/llvm/llvm-project/tree/main/flang
67 * ADSP compiler support (SHARC and Blackfin) now covers both CCES and
68 VDSP++ installations, with required configuration now done in the
69 compiler module itself rather than the ``Generic-ADSP`` platform module.
74 * A dedicated ``ADSP`` platform has been added
75 to replace the existing ``Generic-ADSP`` implementation.
76 This features automatic detection of the latest CCES/VDSP++ install
77 and compiler selection (``cc21k`` vs. ``ccblkfn``)
78 based off of the :variable:`CMAKE_SYSTEM_PROCESSOR` variable.
83 * The :command:`cmake_host_system_information` command, on Windows,
84 gained a ``QUERY WINDOWS_REGISTRY`` mode.
85 See its :ref:`Query Windows registry` section.
87 * The :command:`cmake_language` command gained a new
88 ``SET_DEPENDENCY_PROVIDER`` sub-command. When a dependency provider is set,
89 calls to :command:`find_package` and :command:`FetchContent_MakeAvailable`
90 can be redirected through a custom command, which can choose to fulfill the
91 request directly, modify how the request is processed, or leave it to be
92 fulfilled by the built-in implementation. See :ref:`dependency_providers`.
94 * The :command:`file(DOWNLOAD)` command gained options ``RANGE_START`` and
95 ``RANGE_END`` to specify a range of bytes to download. This can be
96 useful for downloading parts of big binary files.
98 * The :command:`find_file`, :command:`find_path`, :command:`find_library`,
99 :command:`find_program`, and :command:`find_package` commands gained the
100 ``NO_CMAKE_INSTALL_PREFIX`` option to control searching
101 :variable:`CMAKE_INSTALL_PREFIX`.
103 * The :command:`find_file`, :command:`find_path`, :command:`find_library`,
104 :command:`find_program`, and :command:`find_package` commands gained the
105 ability to specify which Windows Registry views must be queried.
107 * The :command:`find_package` command gained a ``GLOBAL`` option that
108 allows for the promotion of imported targets to global scope for the
109 duration of the :command:`find_package` call.
111 * The :command:`if` command gained the capability to compare paths by
112 using the ``PATH_EQUAL`` operator. See policy :policy:`CMP0139`.
117 * The :variable:`CMAKE_COLOR_DIAGNOSTICS` variable was added to control
118 color diagnostics generated by compilers. This variable also controls
119 color build system messages with :ref:`Makefile Generators`, replacing
120 :variable:`CMAKE_COLOR_MAKEFILE`.
122 The :envvar:`CMAKE_COLOR_DIAGNOSTICS` environment variable was added to set
123 a default value for :variable:`CMAKE_COLOR_DIAGNOSTICS`.
125 * The :variable:`CMAKE_COMPILE_WARNING_AS_ERROR` variable and corresponding
126 :prop_tgt:`COMPILE_WARNING_AS_ERROR` target property were added to enable
127 compilation with a compiler-specific flag to treat warnings as errors,
130 * The :variable:`CMAKE_CUDA_ARCHITECTURES` variable and associated
131 :prop_tgt:`CUDA_ARCHITECTURES` target property now support the
132 special ``native`` value to compile for the architectures(s)
133 of the host's GPU(s).
135 * The :variable:`CMAKE_FIND_PACKAGE_TARGETS_GLOBAL` variable was added to
136 toggle behavior of the :command:`find_package` command's new ``GLOBAL``
139 * The :variable:`CMAKE_FIND_USE_INSTALL_PREFIX` variable was added to toggle
140 behavior of the :command:`find_file`, :command:`find_library`,
141 :command:`find_path`, :command:`find_package`, and :command:`find_program`
142 commands' new ``NO_CMAKE_INSTALL_PREFIX`` option.
144 * The :variable:`CMAKE_PROJECT_TOP_LEVEL_INCLUDES` variable was added to allow
145 injecting custom code at the site of the first :command:`project` call,
146 after the host and target platform details have been determined.
148 * The :variable:`CMAKE_TRY_COMPILE_NO_PLATFORM_VARIABLES` variable
149 was added to tell the :command:`try_compile` command not to
150 pass any platform variables to the test project.
152 * The :variable:`CMAKE_VERIFY_INTERFACE_HEADER_SETS` variable and
153 corresponding :prop_tgt:`VERIFY_INTERFACE_HEADER_SETS` target property
154 were added to enable build rules that verify all headers in header sets
155 can be used on their own.
157 * The :variable:`CMAKE_VS_NO_COMPILE_BATCHING` variable and corresponding
158 :prop_tgt:`VS_NO_COMPILE_BATCHING` target property were added to
159 tell :ref:`Visual Studio Generators` whether to disable compiler
160 parallelism and call the compiler with one source file at a time.
162 * The :variable:`CMAKE_WATCOM_RUNTIME_LIBRARY` variable and
163 :prop_tgt:`WATCOM_RUNTIME_LIBRARY` target property were introduced to
164 select the runtime library used by compilers targeting the Watcom ABI.
165 See policy :policy:`CMP0136`.
167 * The :variable:`CMAKE_XCODE_XCCONFIG` variable and corresponding
168 :prop_tgt:`XCODE_XCCONFIG` target property were added to tell
169 the :generator:`Xcode` generator to handle ``xcconfig`` files.
174 * The :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT` and
175 :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE` target properties
176 were added to express usage requirements affecting a consumer's
177 direct link dependencies.
179 * The :prop_tgt:`INTERFACE_HEADER_SETS_TO_VERIFY` target property was
180 added to specify which header sets should be verified by
181 :prop_tgt:`VERIFY_INTERFACE_HEADER_SETS`.
183 * The :prop_tgt:`LINK_LIBRARIES` target property now supports
184 the :genex:`$<LINK_ONLY:...>` generator expression.
185 See policy :policy:`CMP0131`.
187 * The :prop_tgt:`VS_DOTNET_STARTUP_OBJECT` target property was added to
188 tell :ref:`Visual Studio Generators` which startup class shall be used
189 when the program or project is executed. This is necessary when more
190 than one ``static void Main(string[])`` function signature is available
191 in a managed .NET project.
196 * The :module:`ExternalProject` module :command:`ExternalProject_Add`
197 command gained a new ``DOWNLOAD_EXTRACT_TIMESTAMP`` option for
198 controlling whether the timestamps of extracted contents are set to
199 match those in the archive when the ``URL`` download method is used.
200 Policy :policy:`CMP0135` was added to enable the option by default.
202 * The :module:`FetchContent` module and the :command:`find_package` command
203 now support integration capabilities:
205 * :command:`FetchContent_MakeAvailable` can now try to satisfy a dependency
206 by calling :command:`find_package` first. A new
207 :variable:`FETCHCONTENT_TRY_FIND_PACKAGE_MODE` variable controls whether
208 this is done by default for all dependencies, is opt-in per dependency,
209 or is disabled entirely.
211 * :command:`find_package` can be re-routed to call
212 :command:`FetchContent_MakeAvailable` instead. A new read-only
213 :variable:`CMAKE_FIND_PACKAGE_REDIRECTS_DIR` variable points to a
214 directory where config package files can be located to facilitate these
217 * The :module:`FindJNI` module now provides imported targets.
219 * The :module:`FindMatlab` module :command:`matlab_add_mex` function
220 gained a ``NO_IMPLICIT_LINK_TO_MATLAB_LIBRARIES`` option to disable
221 automatic linking of MATLAB libraries.
223 * The :module:`FindVulkan` module now supports components to select which
224 VulkanSDK tool and libraries to find in addition to the Vulkan SDK headers
227 * The :module:`FindZLIB` gained a new ``ZLIB_USE_STATIC_LIBS`` variable to
228 search only for static libraries.
230 Generator Expressions
231 ---------------------
233 * The :genex:`LINK_LIBRARY` generator expression was added to manage how
234 libraries are specified during the link step.
235 The :variable:`CMAKE_<LANG>_LINK_LIBRARY_USING_<FEATURE>` and
236 :variable:`CMAKE_LINK_LIBRARY_USING_<FEATURE>` variables are used to define
237 features usable by the :genex:`LINK_LIBRARY` generator expression.
238 Moreover, the :prop_tgt:`LINK_LIBRARY_OVERRIDE` and
239 :prop_tgt:`LINK_LIBRARY_OVERRIDE_<LIBRARY>` target properties are
240 available to resolve incompatible features.
242 The :genex:`LINK_LIBRARY` generator expression can link frameworks in
243 various ways when targeting ``Apple`` platforms.
244 The following features were added:
247 * ``NEEDED_FRAMEWORK``
248 * ``REEXPORT_FRAMEWORK``
251 The :genex:`LINK_LIBRARY` generator expression can link libraries in
252 various ways when targeting ``Apple`` platforms.
253 The following features were added:
256 * ``REEXPORT_LIBRARY``
259 The :genex:`LINK_LIBRARY` generator expression gained the feature
260 ``WHOLE_ARCHIVE`` to force load of all members in a static library.
261 This feature is supported on the following target platforms:
263 * all ``Apple`` variants
265 * all ``BSD`` variants
271 * The :genex:`LINK_GROUP` generator expression was added to manage the
272 grouping of libraries during the link step. The
273 :variable:`CMAKE_<LANG>_LINK_GROUP_USING_<FEATURE>` and
274 :variable:`CMAKE_LINK_GROUP_USING_<FEATURE>` variables are used to define
275 features usable with the :genex:`LINK_GROUP` generator expression.
276 This release defines the ``RESCAN`` feature, which can be used to handle
277 circular references among static libraries when using toolchains for
278 Linux, BSD, SunOS and GNU toolchains for Windows.
280 * The :genex:`PATH` generator expression was added to manage paths.
282 * The :genex:`PATH_EQUAL` generator expression was added to manage path
285 * The :genex:`TARGET_BUNDLE_DIR_NAME` generator expression
286 was added to evaluate to the name of the bundle directory
287 for a given bundle target.
292 * :manual:`ctest(1)` gained a ``--test-output-truncation`` option (and
293 corresponding :variable:`CTEST_CUSTOM_TEST_OUTPUT_TRUNCATION` variable) to
294 specify the truncation mode once the maximum test output size has been
295 reached. Possible values are ``tail`` (default), ``middle`` or ``head``.
300 * The :cpack_gen:`CPack WIX Generator` gained a new variable,
301 :variable:`CPACK_WIX_ARCHITECTURE`, to specify the installer architecture
302 in order to support computers running Windows for ARM.
304 * CPack now supports the :variable:`CPACK_THREADS` option for ``zstd``
305 compression when compiled with libarchive 3.6 or higher. It is
306 supported by official CMake binaries available on `cmake.org`_.
308 Deprecated and Removed Features
309 ===============================
311 * The :module:`CPack` module no longer enables the SLA by default in the
312 :cpack_gen:`CPack DragNDrop Generator`. See policy :policy:`CMP0133`
313 and the :variable:`CPACK_DMG_SLA_USE_RESOURCE_FILE_LICENSE` variable.
315 * The deprecated :cpack_gen:`CPack PackageMaker Generator` has been removed.
317 * The :module:`FindGLUT` module no longer provides the undocumented
318 ``GLUT_LIBRARY`` and ``GLUT_INCLUDE_PATH`` result variables.
320 * The :module:`FindVulkan` module no longer silently ignores unknown
321 components requested by a ``find_package(Vulkan REQUIRED ...)`` call.
322 With the addition of support for components, requests for unknown
323 components now produce an error.
328 * CMake no longer sets environment variables like :envvar:`CC`, :envvar:`CXX`,
329 etc. when enabling the corresponding language during the first CMake run in
330 a build directory. See policy :policy:`CMP0132`.
332 * The :module:`CheckIPOSupported` module :command:`check_ipo_supported`
333 command now uses the caller's :variable:`CMAKE_<LANG>_FLAGS`
334 and :variable:`CMAKE_<LANG>_FLAGS_<CONFIG>` values.
335 See policy :policy:`CMP0138`.
337 * The :generator:`MSYS Makefiles` and :generator:`MinGW Makefiles`
338 generators, when a compiler is not explicitly specified, now select
339 the first compiler (of any name) found in directories listed by the
340 ``PATH`` environment variable.
342 * The :command:`try_compile` command
343 :ref:`whole-project <Try Compiling Whole Projects>` signature
344 now propagates platform variables. See policy :policy:`CMP0137`.
346 * The :command:`while` command now diagnoses errors during condition
347 evaluation. See policy :policy:`CMP0130`.
349 * The precompiled macOS binaries provided on `cmake.org`_ no longer attach a
350 SLA to the ``.dmg`` packages. This was removed because macOS 12 deprecated
351 the tools used to attach ``.dmg`` resources.
353 * A precompiled Windows ``arm64`` binary is now provided on `cmake.org`_.
355 .. _`cmake.org`: https://cmake.org/download/
360 Changes made since CMake 3.24.0 include the following.
365 * These versions made no changes to documented features or interfaces.
366 Some implementation updates were made to support ecosystem changes
367 and/or fix regressions.
372 * The ``LLVMFlang`` Fortran compiler support added in 3.24.0 has been extended:
374 * It now supports mixed-language linking between Fortran and C or CXX.
375 * It now supports the GNU ABI (MinGW) on Windows, but not yet the MSVC ABI.
377 * Some implementation updates were made to support ecosystem changes
378 and/or fix regressions.