250 lines
11 KiB
ReStructuredText
250 lines
11 KiB
ReStructuredText
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CMake 3.2.0 Release Notes
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*************************
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.. only:: html
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.. contents::
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Changes made since CMake 3.1.0 include the following.
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* A new :command:`continue` command was added that can be called inside loop
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contexts to end the current iteration and start the next one at the top of
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the loop block.
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* A :module:`FindGSL` module was introduced to find the
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GNU Scientific Library.
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* The :module:`FindIntl` module was added to find the Gettext ``libintl``
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library.
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* A :module:`FindJsonCpp` module was introduced to find the
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JsonCpp package.
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* The :command:`ctest_coverage` learned to support Javascript coverage.
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* The :manual:`cmake(1)` ``-E tar`` command now supports creating
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``.xz``-compressed archives with the ``J`` flag.
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* On OS X with Makefile and Ninja generators, when a compiler is found
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in ``/usr/bin`` it is now mapped to the corresponding compiler inside
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the Xcode application folder, if any. This allows such build
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trees to continue to work with their original compiler even when
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``xcode-select`` switches to a different Xcode installation.
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* The :manual:`Compile Features <cmake-compile-features(7)>` functionality
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is now aware of features supported by GNU compilers on OS X.
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* The :command:`break` command now rejects calls outside of a loop
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context or that pass arguments to the command.
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See policy :policy:`CMP0055`.
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* Add :variable:`CMAKE_MATCH_COUNT` for the number of matches made in the last
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regular expression.
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* The :manual:`cmake(1)` ``-E tar`` command learned a new
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``--files-from=<file>`` option to specify file names using
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lines in a file to overcome command-line length limits.
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* The :manual:`cmake(1)` ``-E tar`` command learned a new
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``--mtime=<date>`` option to specify the modification time
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recorded in tarball entries.
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* The :command:`add_custom_command` and :command:`add_custom_target`
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commands learned a new ``USES_TERMINAL`` option to request that
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the command be given direct access to the terminal if possible.
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The :generator:`Ninja` generator will places such commands in the
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``console`` pool. Build targets provided by CMake that are meant
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for individual interactive use, such as ``install``, are now
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placed in this pool.
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* The :module:`CPackRPM` module learned options to set per-component
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descriptions and summaries. See the
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:variable:`CPACK_RPM_<component>_PACKAGE_DESCRIPTION` and
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:variable:`CPACK_RPM_<component>_PACKAGE_SUMMARY` variables.
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* The :module:`CPackRPM` module learned options to specify
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requirements for pre- and post-install scripts. See the
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:variable:`CPACK_RPM_PACKAGE_REQUIRES_PRE` and
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:variable:`CPACK_RPM_PACKAGE_REQUIRES_POST` variables.
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* The :module:`CPackRPM` module learned options to specify
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requirements for pre- and post-uninstall scripts. See the
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:variable:`CPACK_RPM_PACKAGE_REQUIRES_PREUN` and
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:variable:`CPACK_RPM_PACKAGE_REQUIRES_POSTUN` variables.
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* The :module:`CTestCoverageCollectGCOV` module was introduced as an
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alternative to the :command:`ctest_coverage` command for collecting
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``gcov`` results for submission to CDash.
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* The :command:`ctest_coverage` learned to support Delphi coverage.
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* On OS X, commands supporting network communication, such as
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:command:`file(DOWNLOAD)`, :command:`file(UPLOAD)`, and
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:command:`ctest_submit`, now support SSL/TLS even when CMake
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is not built against OpenSSL. The OS X native SSL/TLS
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implementation is used by default. OS-configured certificate
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authorities will be trusted automatically.
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* When CMake is built with OpenSSL on systems other than Windows
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and OS X, commands supporting network communication via ``https``,
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such as :command:`file(DOWNLOAD)`, :command:`file(UPLOAD)`, and
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:command:`ctest_submit`, now search for OS-configured certificate
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authorities in a few ``/etc`` paths to be trusted automatically.
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* On Windows, commands supporting network communication, such as
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:command:`file(DOWNLOAD)`, :command:`file(UPLOAD)`, and
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:command:`ctest_submit`, now support SSL/TLS even when CMake
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is not built against OpenSSL. The Windows native SSL/TLS
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implementation is used by default. OS-configured certificate
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authorities will be trusted automatically.
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* The :command:`add_custom_command` and :command:`add_custom_target`
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commands learned a new ``BYPRODUCTS`` option to specify files
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produced as side effects of the custom commands. These are not
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outputs because they do not always have to be newer than inputs.
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* The :module:`ExternalData` module learned to support
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:ref:`Custom Fetch Scripts <ExternalData Custom Fetch Scripts>`.
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This allows projects to specify custom ``.cmake`` scripts for
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fetching data objects during the build.
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* The :module:`ExternalProject` module ``ExternalProject_Add`` function
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learned a new ``CMAKE_CACHE_DEFAULT_ARGS`` option to initialize cache
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values in the external project without setting them on future builds.
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* The :module:`ExternalProject` module learned options to create
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independent external project step targets that do not depend
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on the builtin steps.
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* The :module:`ExternalProject` module :command:`ExternalProject_Add`
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command learned a ``TEST_EXCLUDE_FROM_MAIN`` option to exclude tests
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from the main build.
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* The :module:`ExternalProject` module ``ExternalProject_Add`` command
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learned an ``UPDATE_DISCONNECTED`` option to avoid automatically
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updating the source tree checkout from version control.
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* The :manual:`Compile Features <cmake-compile-features(7)>` functionality
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is now aware of features supported by Microsoft Visual Studio (``MSVC``).
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* The :command:`file(LOCK)` subcommand was created to allow CMake
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processes to synchronize through file and directory locks.
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* The :command:`file(STRINGS)` now supports UTF-16LE, UTF-16BE,
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UTF-32LE, UTF-32BE as ``ENCODING`` options.
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* The :module:`FindCUDA` module learned about the ``cusolver``
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library in CUDA 7.0.
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* The :module:`FindGit` module learned to find the ``git`` command-line tool
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that comes with GitHub for Windows installed in user home directories.
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* The :module:`FindLATEX` module learned to support components.
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* The :module:`FindMPI` module learned to find MS-MPI on Windows.
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* The :module:`FindOpenGL` module no longer explicitly searches
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for any dependency on X11 libraries with the :module:`FindX11`
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module. Such dependencies should not need to be explicit.
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Applications using X11 APIs themselves should find and link
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to X11 libraries explicitly.
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* The :module:`FindOpenSSL` module now reports ``crypto`` and ``ssl``
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libraries separately in ``OPENSSL_CRYPTO_LIBRARY`` and
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``OPENSSL_SSL_LIBRARY``, respectively, to allow applications to
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link to one without the other.
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* The :manual:`Compile Features <cmake-compile-features(7)>` functionality
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is now aware of features supported by GNU 4.4 to 4.6 compilers.
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* The :command:`install(EXPORT)` command now works with an absolute
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``DESTINATION`` even if targets in the export set are installed
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with a destination or usage requirements specified relative to the
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install prefix. The value of the :variable:`CMAKE_INSTALL_PREFIX`
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variable is hard-coded into the installed export file as the base
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for relative references.
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* The :manual:`Compile Features <cmake-compile-features(7)>` functionality
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is now aware of features supported by GNU compiler version 5.0.
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* The :module:`CPackRPM` module learned a new
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:variable:`CPACK_RPM_<COMPONENT>_PACKAGE_PREFIX` variable to
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specify a component-specific value to use instead of
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:variable:`CPACK_PACKAGING_INSTALL_PREFIX`.
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* The :module:`CPackRPM` module learned a new
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:variable:`CPACK_RPM_RELOCATION_PATHS` variable to
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specify multiple relocation prefixes for a single rpm package.
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* The :manual:`Compile Features <cmake-compile-features(7)>` functionality
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is now aware of features supported by Oracle SolarisStudio (``SunPro``).
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* The :command:`try_compile` command source file signature now honors
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link flags (e.g. :variable:`CMAKE_EXE_LINKER_FLAGS`) in the generated
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test project. See policy :policy:`CMP0056`.
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* The :command:`try_run` command learned to honor the ``LINK_LIBRARIES``
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option just as :command:`try_compile` already does.
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* The implementation of CMake relies on some C++ compiler features which are
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not supported by some older compilers. As a result, those old compilers
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can no longer be used to build CMake itself. CMake continues to be able to
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generate Makefiles and project files for users of those old compilers
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however. The compilers known to no longer be capable of building CMake
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are:
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* MSVC 6 and 7.0 - superceded by VisualStudio 7.1 and newer compilers.
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* GCC 2.95 - superceded by GCC 3 and newer compilers.
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* Borland compilers - superceded by other Windows compilers.
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* Compaq compilers - superceded by other compilers.
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* Comeau compilers - superceded by other compilers.
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* SGI compilers - IRIX was dropped as a host platform.
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When building using SolarisStudio 12, the default ``libCStd`` standard
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library is not sufficient to build CMake. The SolarisStudio distribution
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supports compiler options to use ``STLPort4`` or ``libstdc++``. An
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appropriate option to select the standard library is now added
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automatically when building CMake with SolarisStudio compilers.
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* A :prop_tgt:`ANDROID_API_MIN` target property was introduced to
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specify the minimum version to be targeted by the toolchain.
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* A :prop_sf:`VS_SHADER_FLAGS` source file property was added to specify
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additional shader flags to ``.hlsl`` files, for the Visual Studio generators.
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* The :module:`WriteCompilerDetectionHeader` module learned to
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create a define for portability of the cxx_thread_local feature. The define
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expands to either the C++11 ``thread_local`` keyword, or a
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pre-standardization compiler-specific equivalent, as appropriate.
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* On Windows, CMake learned to support international characters.
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This allows use of characters from multiple (spoken) languages
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in CMake code, paths to source files, configured files such as
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``.h.in`` files, and other files read and written by CMake.
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Because CMake interoperates with many other tools, there may
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still be some limitations when using certain international
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characters.
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Files written in the :manual:`cmake-language(7)`, such as
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``CMakeLists.txt`` or ``*.cmake`` files, are expected to be
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encoded as UTF-8. If files are already ASCII, they will be
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compatible. If files were in a different encoding, including
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Latin 1, they will need to be converted.
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The Visual Studio generators now write solution and project
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files in UTF-8 instead of Windows-1252. Windows-1252 supported
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Latin 1 languages such as those found in North and South America
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and Western Europe. With UTF-8, additional languages are now
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supported.
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* The :module:`WriteCompilerDetectionHeader` module learned to create
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multiple output files per compiler and per language, instead of creating
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one large file.
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* The :manual:`Compile Features <cmake-compile-features(7)>` functionality
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is now aware of features supported by Apple Clang (``AppleClang``).
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* The :generator:`Xcode` generator no longer requires a value for
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the :variable:`CMAKE_MAKE_PROGRAM` variable to be located up front.
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It now locates ``xcodebuild`` when needed at build time.
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