CMake 4.1 Release Notes *********************** .. only:: html .. contents:: Changes made since CMake 4.0 include the following. New Features ============ File-Based API -------------- * The :manual:`cmake-file-api(7)` :ref:`v1 <file-api v1>` now writes partial replies when buildsystem generation fails with an error. See the :ref:`v1 Reply Error Index <file-api reply error index>`. Generators ---------- * :ref:`Makefile Generators` and :ref:`Ninja Generators` gained support for adding a linker launcher with ``Fortran``, ``CUDA``, and ``HIP``. See the :variable:`CMAKE_<LANG>_LINKER_LAUNCHER` variable and :prop_tgt:`<LANG>_LINKER_LAUNCHER` target property for details. Command-Line ------------ * The :ref:`cmake --build <Build Tool Mode>` command-line tool, when used with the :generator:`Xcode` generator, now detects when a third-party tool has wrapped the generated ``.xcodeproj`` in a ``.xcworkspace``, and drives the build through the workspace instead. Configure Log ------------- * The :manual:`cmake-configure-log(7)` now reports events from :command:`find_package` (in ``CONFIG`` mode), :command:`find_path`, :command:`find_file`, :command:`find_library`, and :command:`find_program` commands when first invoked, when their results transition between "not found" and "found", or when enabled explicitly by the :option:`--debug-find <cmake --debug-find>` command-line option. See :ref:`find configure-log event` and :ref:`find_package configure-log event`. Logging may also be controlled by the :variable:`CMAKE_FIND_DEBUG_MODE` and :variable:`CMAKE_FIND_DEBUG_MODE_NO_IMPLICIT_CONFIGURE_LOG` variables. Compilers --------- * `Diab compilers from Wind River Systems`_, versions 5.9.x+, are now supported with :variable:`compiler id <CMAKE_<LANG>_COMPILER_ID>` ``Diab`` for languages ``ASM``, ``C``, and ``CXX``. .. _`Diab compilers from Wind River Systems`: https://www.windriver.com/resource/wind-river-diab-compiler-product-overview * `Renesas Compilers`_ are now supported with :variable:`compiler id <CMAKE_<LANG>_COMPILER_ID>` ``Renesas`` for languages ``ASM`` and ``C``. .. _Renesas Compilers: https://www.renesas.com Commands -------- * The :command:`add_dependencies` command may be called with no dependencies. * The :command:`cmake_pkg_config` command now supports the ``IMPORT`` and ``POPULATE`` subcommands for interfacing CMake targets with pkg-config based dependencies. * The :command:`project` command now has experimental support for the ``COMPAT_VERSION`` keyword, gated by ``CMAKE_EXPERIMENTAL_EXPORT_PACKAGE_INFO``. Variables --------- * The :variable:`CMAKE_FIND_REQUIRED` variable was added to tell :command:`find_package`, :command:`find_path`, :command:`find_file`, :command:`find_library`, and :command:`find_program` to be ``REQUIRED`` by default. The commands also gained an ``OPTIONAL`` keyword to ignore the variable for a specific call. * The :variable:`CMAKE_<LANG>_COMPILER_ARCHITECTURE_ID` variable is now populated for most compilers, and documented for public use. * The :variable:`CMAKE_<LANG>_ICSTAT` variable and corresponding :prop_tgt:`<LANG>_ICSTAT` target property were added to tell the :ref:`Makefile Generators` and the :ref:`Ninja Generators` to run the IAR ``icstat`` tool along with the compiler for ``C`` and ``CXX`` languages. Environment Variables --------------------- * The :envvar:`CMAKE_<LANG>_IMPLICIT_LINK_LIBRARIES_EXCLUDE` environment variable was added to optionally exclude specific libraries from the detected set of :variable:`CMAKE_<LANG>_IMPLICIT_LINK_LIBRARIES`. Properties ---------- * The :prop_tgt:`AUTOMOC_INCLUDE_DIRECTORIES` target property and associated :variable:`CMAKE_AUTOMOC_INCLUDE_DIRECTORIES` variable were added to override the automatic discovery of moc includes from a target's transitive include directories. * The :prop_sf:`MACOSX_PACKAGE_LOCATION` source file property now works when set on a source directory, and copies its entire tree into the bundle. * The :prop_tgt:`PDB_NAME` and :prop_tgt:`COMPILE_PDB_NAME` target properties now support :manual:`generator expressions <cmake-generator-expressions(7)>`. Modules ------- * The :module:`FindASPELL` module now provides a version variable, imported targets, and components to optionally select the Aspell library and executable separately. * The :module:`FindBLAS` and :module:`FindLAPACK` modules now support the NVIDIA Performance Libraries (NVPL). * The :module:`FindProtobuf` module's :command:`protobuf_generate(DEPENDENCIES)` command argument now accepts multiple values. * The :module:`FindProtobuf` module's :command:`protobuf_generate_cpp` and :command:`protobuf_generate_python` commands, together with their ``Protobuf_IMPORT_DIRS`` and ``PROTOBUF_GENERATE_CPP_APPEND_PATH`` hint variables, are now deprecated in favor of the :command:`protobuf_generate` command. Regular Expressions ------------------- * The :command:`string(REGEX MATCHALL)`, :command:`string(REGEX REPLACE)`, and :command:`list(TRANSFORM REPLACE)` commands now match the regular expression ``^`` anchor at most once in repeated searches, at the start of the input. See policy :policy:`CMP0186`. * The :command:`string(REGEX REPLACE)` command now allows references to unmatched groups. They are replaced with empty strings. * The :command:`string(REGEX MATCH)`, :command:`string(REGEX MATCHALL)`, and :command:`string(REGEX REPLACE)` commands now allow zero-length matches. CTest ----- * :manual:`ctest(1)` gained a :option:`--schedule-random-seed <ctest --schedule-random-seed>` option to specify a numeric random seed to make :option:`ctest --schedule-random` deterministic for reproduction. CPack ----- * The :cpack_gen:`CPack NuGet Generator` gained option :variable:`CPACK_NUGET_SYMBOL_PACKAGE` to generate NuGet symbol packages containing PDB files. * The :cpack_gen:`CPack RPM Generator` gained :variable:`CPACK_RPM_PACKAGE_ENHANCES`, :variable:`CPACK_RPM_PACKAGE_RECOMMENDS`, and :variable:`CPACK_RPM_PACKAGE_SUPPLEMENTS` variables to specify the corresponding RPM spec fields. Deprecated and Removed Features =============================== * The :module:`FindGTest` module's result variables ``GTEST_INCLUDE_DIRS``, ``GTEST_LIBRARIES``, ``GTEST_MAIN_LIBRARIES``, and ``GTEST_BOTH_LIBRARIES`` are now deprecated in favor of using ``GTest::gtest`` and ``GTest::gtest_main`` imported targets. * The :module:`FindGCCXML` module has been deprecated via policy :policy:`CMP0188`. Port projects to CastXML instead. * The :module:`FindCABLE` module has been deprecated via policy :policy:`CMP0191`. * The :module:`CMakeDetermineVSServicePack` module has been deprecated via policy :policy:`CMP0196`. Port projects to the :variable:`CMAKE_<LANG>_COMPILER_VERSION` variable instead. Other Changes ============= * The :module:`ExternalProject` module no longer checks the ``URL`` archive file extension. Any archive type that :option:`cmake -E tar <cmake-E tar>` can extract is now allowed. * Modules :module:`FindPython3`, :module:`FindPython2` and :module:`FindPython` now enforce consistency of artifacts in cross-compiling mode. This prevents mixing host and target artifacts. See policy :policy:`CMP0190`. * The :module:`GNUInstallDirs` module now prefers to default ``SYSCONFDIR``, ``LOCALSTATEDIR``, and ``RUNSTATEDIR`` to absolute paths when installing to special prefixes. See policy :policy:`CMP0192`. * The :module:`GNUInstallDirs` module now caches ``CMAKE_INSTALL_*`` variables with their leading ``usr/`` for install prefix ``/``. See policy :policy:`CMP0193`. * The :command:`install(TARGETS)` command no longer ignores file sets which haven't been defined at the point it is called. The ordering of :command:`target_sources(FILE_SET)` and ``install(TARGETS)`` is no longer semantically relevant. * Enabling ``ASM`` no longer accidentally succeeds using ``MSVC``'s ``cl`` C compiler as an assembler. See policy :policy:`CMP0194`. * The MSVC link ``-machine:`` flag is no longer added to the ``CMAKE_*_LINKER_FLAGS`` variables. See policy :policy:`CMP0197`. * The :ref:`Visual Studio Generators` now suppress Visual Studio's default ``-Zc:forScope``, ``-Zc:inline``, and ``-Zc:wchar_t`` compiler flags, and ``-dynamicbase``, ``-errorreport``, ``-nxcompat``, and ``-safeseh`` link flags, if they are not specified by the project or user. This makes builds more consistent with other generators, and with what projects and users actually specify. * The :genex:`TARGET_PROPERTY` generator expression now evaluates the :prop_tgt:`LINK_LIBRARIES` and :prop_tgt:`INTERFACE_LINK_LIBRARIES` target properties transitively. See policy :policy:`CMP0189`. Updates ======= Changes made since CMake 4.1.0 include the following. 4.1.1 ----- * This version made no changes to documented features or interfaces. Some implementation updates were made to support ecosystem changes and/or fix regressions. 4.1.2 ----- * The :command:`file(GENERATE)` command, when evaluating generator expressions, now uses the value of policy :policy:`CMP0189` as of each call site. Previously, it used the value as of the end of the directory's ``CMakeLists.txt``, as all other generator expression evaluations do. 4.1.3 ----- * When building for macOS with the :generator:`Xcode` generator, :variable:`CMAKE_OSX_DEPLOYMENT_TARGET` once again defaults to the host's macOS version if it is older than the macOS SDK version, as it did in CMake versions prior to 4.0. * The :command:`execute_process` command once again terminates child processes when its ``TIMEOUT`` is reached. This was accidentally regressed by CMake 3.29. 4.1.4, 4.1.5 ------------ * These versions made no changes to documented features or interfaces. Some implementation updates were made to support ecosystem changes and/or fix regressions.
