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diff --git a/Help/release/3.17.rst b/Help/release/3.17.rst new file mode 100644 index 0000000..30e6cc3 --- /dev/null +++ b/Help/release/3.17.rst @@ -0,0 +1,316 @@ +CMake 3.17 Release Notes +************************ + +.. only:: html + + .. contents:: + +Changes made since CMake 3.16 include the following. + +New Features +============ + +Generators +---------- + +* :manual:`cmake(1)` gained a :generator:`Ninja Multi-Config` generator, + which is similar to the :generator:`Ninja` generator but can be used to build + multiple configurations at once. + +* :ref:`Visual Studio Generators` learned to support per-config sources. + Previously only :ref:`Command-Line Build Tool Generators` supported them. + +* :ref:`Visual Studio Generators` for VS 2010 and above now support + specifying the ``VCTargetsPath`` value for project files in + :variable:`CMAKE_GENERATOR_TOOLSET` setting. + +* :ref:`Visual Studio Generators` for VS 2010 and above learned to + support .NET Standard and .NET Core. See the + :prop_tgt:`DOTNET_TARGET_FRAMEWORK` target property and + associated :variable:`CMAKE_DOTNET_TARGET_FRAMEWORK` variable. + +Languages +--------- + +* The :manual:`Compile Features <cmake-compile-features(7)>` functionality + now offers meta-features for the CUDA language standard levels + (e.g. ``cuda_std_03``, ``cuda_std_14``). See + :prop_gbl:`CMAKE_CUDA_KNOWN_FEATURES`. + +Compilers +--------- + +* The IBM XL Fortran compiler is now supported by the :generator:`Ninja` + generator. + +Command-Line +------------ + +* :manual:`cmake(1)` gained a ``--debug-find`` command-line option to + enable additional human-readable output on where find commands search. + +* :manual:`cmake(1)` gained a ``--trace-format`` command-line option that + can be used to set the ``--trace`` output format. Currently, the old + human readable and the new JSON format are supported. The new JSON format + is easier to parse automatically, than the existing format. + +* :manual:`cmake(1)` gained a ``-E rm`` command-line tool that can be + used to remove directories and files. This supersedes the existing + ``-E remove`` and ``-E remove_directory`` tools and has better semantics. + +Commands +-------- + +* The :command:`add_custom_command` command learned to interpret paths in + ``DEPENDS`` arguments that are specified relative to the current + binary directory. + +* The :command:`foreach` learned a new option ``ZIP_LISTS`` to iterate + over multiple lists simultaneously. + +* The :command:`load_cache(READ_WITH_PREFIX)` command mode is now allowed + when using ``cmake -P`` to :ref:`Run a Script <Script Processing Mode>`. + +* The :command:`message` command learned to output context provided in + the :variable:`CMAKE_MESSAGE_CONTEXT` variable for log levels + ``NOTICE`` and below. Enable this output with the new ``--log-context`` + command-line option or :variable:`CMAKE_MESSAGE_CONTEXT_SHOW` variable. + +* The :command:`message` command gained new keywords ``CHECK_START``, + ``CHECK_PASS`` and ``CHECK_FAIL``. + +* :command:`target_compile_options` command now honors the ``BEFORE`` + keyword more consistently. See policy :policy:`CMP0101`. + +Variables +--------- + +* A :variable:`CMAKE_CTEST_ARGUMENTS` variable was added to specify a list + of command-line arguments passed to CTest when running through the + ``test`` (or ``RUN_TESTS``) target of the generated build system. + +* The following variables are now defined inside a :command:`function`: + + - :variable:`CMAKE_CURRENT_FUNCTION` + - :variable:`CMAKE_CURRENT_FUNCTION_LIST_DIR` + - :variable:`CMAKE_CURRENT_FUNCTION_LIST_FILE` + - :variable:`CMAKE_CURRENT_FUNCTION_LIST_LINE` + +* The :variable:`CMAKE_CUDA_RUNTIME_LIBRARY` variable and + :prop_tgt:`CUDA_RUNTIME_LIBRARY` target property were introduced to + select the CUDA runtime library used when linking targets that + use CUDA. + +* The :variable:`CMAKE_FIND_DEBUG_MODE` variable was introduced to + print extra find call information during the cmake run to standard + error. Output is designed for human consumption and not for parsing. + +* The :variable:`CMAKE_EXPORT_COMPILE_COMMANDS` variable now takes its + initial value from the :envvar:`CMAKE_EXPORT_COMPILE_COMMANDS` environment + variable if no explicit configuration is given. + +* The :variable:`CMAKE_<LANG>_COMPILER_LAUNCHER` variable, if not set + explicitly, now takes its initial value from the + :envvar:`CMAKE_<LANG>_COMPILER_LAUNCHER` environment variable. + +* The :variable:`CMAKE_MESSAGE_LOG_LEVEL` variable can now be used + to persist a log level between CMake runs, unlike the ``--log-level`` + command line option which only applies to that particular run. + +* The :variable:`CMAKE_XCODE_SCHEME_ENVIRONMENT` variable and + :prop_tgt:`XCODE_SCHEME_ENVIRONMENT` target property were added to + tell the :generator:`Xcode` generator to set the value of the + ``Custom Working Directory`` schema option. + +Properties +---------- + +* The :prop_tgt:`AIX_EXPORT_ALL_SYMBOLS` target property and associated + :variable:`CMAKE_AIX_EXPORT_ALL_SYMBOLS` variable were created to + optionally explicitly disbale automatic export of symbols from shared + libraries on AIX. + +* The :prop_tgt:`DEPRECATION` target property was added to mark + a target as deprecated. If a linked target is marked as + deprecated, a warning with the deprecation message is issued + at generate time. + +* The :prop_tgt:`INSTALL_NAME_DIR` target property now supports + :manual:`generator expressions <cmake-generator-expressions(7)>`. + In particular, the ``$<INSTALL_PREFIX>`` generator expression can + be used to set the directory relative to the install-time prefix. + +* Target properties :prop_tgt:`OSX_COMPATIBILITY_VERSION` and + :prop_tgt:`OSX_CURRENT_VERSION` were added to set the + ``compatibility_version`` and ``curent_version`` respectively + on macOS. For backwards compatibility, if these properties + are not set, :prop_tgt:`SOVERSION` and :prop_tgt:`VERSION` + are used respectively as fallbacks. + +* The :prop_tgt:`VS_DOTNET_DOCUMENTATION_FILE` target property was added + to tell :ref:`Visual Studio Generators` to generate a ``DocumentationFile`` + reference in ``.csproj`` files. + +Modules +------- + +* The :module:`ExternalProject` module :command:`ExternalProject_Add` + command gained a ``GIT_SUBMODULES_RECURSE`` option to specify whether + Git submodules should be updated recursively. The default is on to + preserve existing behavior. + +* The :module:`FindCUDAToolkit` module was added to find the + CUDA Toolkit without enabling CUDA as a language. + +* The :module:`FindCURL` module learned to find CURL using + the ``CURLConfig.cmake`` package configuration file generated by + CURL's cmake buildsystem. It also gained a new ``CURL_NO_CURL_CMAKE`` + option to disable this behavior. + +* The :module:`FindFLEX` module's ``FLEX_TARGET`` command now runs ``flex`` + with :variable:`CMAKE_CURRENT_BINARY_DIR` as the working directory. + See policy :policy:`CMP0098`. + +* The :module:`FindLibArchive` module now provides an imported target + for libarchive. + +* The :module:`FindPython` module has learned to find Python components + in active virtual environments managed by ``conda``. + +* The :module:`FindPython3` and :module:`FindPython` modules gained, + respectively, variable ``Python3_SOABI`` and ``Python_SOABI`` giving + the standard extension suffix for modules. + +* The :module:`FindLibXml2` module now provides an imported target for the + ``xmllint`` executable + +Autogen +------- + +* :prop_tgt:`AUTOMOC` and :prop_tgt:`AUTOUIC` learned to process headers + with a ``.hh`` extension. See policy :policy:`CMP0100`. + +CTest +----- + +* The :variable:`CTEST_CONFIGURATION_TYPE` variable is now set from the + command line when :manual:`ctest(1)` is invoked with ``-C <cfg>``. + +* The :manual:`ctest(1)` gained support for Dr. Memory to run + memcheck runs. + +* The :manual:`ctest(1)` tool gained a ``--no-tests=<[error|ignore]>`` option + to explicitly set and unify the behavior between direct invocation and + script mode if no tests were found. + +* The :manual:`ctest(1)` tool gained a ``--repeat <mode>:<n>`` option + to specify conditions in which to repeat tests. This generalizes + the existing ``--repeat-until-fail <n>`` option to add modes for + ``until-pass`` and ``after-timeout``. + +* The :command:`ctest_test` command gained a ``REPEAT <mode>:<n>`` option + to specify conditions in which to repeat tests. + +CPack +----- + +* The :cpack_gen:`CPack DragNDrop Generator` learned to use + the :variable:`CPACK_DMG_<component>_FILE_NAME` variable + to set a custom filename when packaging components into + their own DMGs. + +* The :cpack_gen:`CPack DragNDrop Generator` learned to handle + RTF formatted license files. When :variable:`CPACK_DMG_SLA_DIR` + variable is set, ``<language>.license.rtf`` is considered, but + only as a fallback when the plaintext (``.txt``) file is not found + in order to maintain backwards compatibility. + +* The :cpack_gen:`CPack NSIS Generator` gained a new variable + :variable:`CPACK_NSIS_MUI_HEADERIMAGE` to set the header image. + To not break existing setups, it still defaults to + :variable:`CPACK_PACKAGE_ICON` if the new variable is not set. + +* The :cpack_gen:`CPack NSIS Generator` now supports + :variable:`CPACK_NSIS_UNINSTALL_NAME`. + This can be used to specify the name of the Uninstall program. + +* The :cpack_gen:`CPack NSIS Generator` now supports + :variable:`CPACK_NSIS_WELCOME_TITLE` and + :variable:`CPACK_NSIS_WELCOME_TITLE_3LINES`. + These can be used to specify the welcome page title and display it in 3 lines. + +* The :cpack_gen:`CPack NSIS Generator` now supports + :variable:`CPACK_NSIS_FINISH_TITLE` and + :variable:`CPACK_NSIS_FINISH_TITLE_3LINES`. + These can be used to specify the finish page title and display it in 3 lines. + +* The :cpack_gen:`CPack productbuild Generator` gained option + :variable:`CPACK_PRODUCTBUILD_BACKGROUND` to specify a background image + for the macOS installer. + +Other +----- + +* :manual:`ccmake(1)` now displays cache values using colors + based on the entry type if the terminal supports color. + +* :manual:`ccmake(1)` now displays messages and a progress bar during + configure and generate. It will keep the output displayed if any + errors or warnings occurred. + +Deprecated and Removed Features +=============================== + +* An explicit deprecation diagnostic was added for policy ``CMP0068`` + and policy ``CMP0069`` (``CMP0067`` and below were already deprecated). + The :manual:`cmake-policies(7)` manual explains that the OLD behaviors + of all policies are deprecated and that projects should port to the + NEW behaviors. + +* The :cpack_gen:`CPack PackageMaker Generator` generator has been + deprecated because Xcode no longer distributes the PackageMaker tools. + The undocumented ``OSXX11`` generator has also been deprecated. + +* The :manual:`cmake(1)` command-line ``-E remove`` and ``-E remove_directory`` + tools are deprecated in favor of the new ``-E rm`` tool. The older tools + always returned 0 if a named path did not exist even without the force + option and cannot be fixed without breaking compatibility, and so have + been superseded. + +Other Changes +============= + +* The :manual:`file API <cmake-file-api(7)>` index file now emits a + ``multiConfig`` flag specifying whether or not the generator supports + multiple output configurations. + +* Target link properties :prop_tgt:`INTERFACE_LINK_OPTIONS`, + :prop_tgt:`INTERFACE_LINK_DIRECTORIES` and + :prop_tgt:`INTERFACE_LINK_DEPENDS` are now transitive over private + dependencies on static libraries. + See policy :policy:`CMP0099`. + +* When using MinGW tools, the :command:`find_library` command no longer + finds ``.dll`` files by default. Instead it expects ``.dll.a`` import + libraries to be available. + +* The :generator:`MinGW Makefiles` generator no longer issues an error if + ``sh.exe`` is present in the environment's ``PATH``. + +* The :generator:`Ninja` generator now prefers the first ninja build + tool to appear in the ``PATH`` no matter whether it is called + ``ninja-build``, ``ninja``, or ``samu``. Previously the first + of those names to appear anywhere in the ``PATH`` would be preferred. + +* With SDCC the ``sdar`` tool is now preferred over ``sdcclib`` as librarian. + The latter was deprecated by SDCC 3.2.0 and removed in SDCC 3.8.6. + +* With SDCC the default flags no longer include any target-specific flags. + Previously the default flags were hard-coded for 8051. + +* The :variable:`CMAKE_VS_GLOBALS` variable value now applies during + compiler identification and in targets created by the + :command:`add_custom_target` command. + +* The :generator:`Xcode` generator no longer hard-codes ``-Wmost``, + ``-Wno-four-char-constants``, and ``-Wno-unknown-pragmas`` warning flags. |