| CMake 3.2 Release Notes | |
| *********************** | |
| .. only:: html | |
| .. contents:: | |
| Changes made since CMake 3.1 include the following. | |
| New Features | |
| ============ | |
| Syntax | |
| ------ | |
| * CMake learned to support unicode characters | |
| :ref:`encoded as UTF-8 <CMake Language Encoding>` | |
| on Windows. This was already supported on platforms whose | |
| system APIs accept UTF-8 encoded strings. | |
| Unicode characters may now be used in CMake code, paths to | |
| source files, configured files such as ``.h.in`` files, and | |
| other files read and written by CMake. Note that because CMake | |
| interoperates with many other tools, there may still be some | |
| limitations when using certain unicode characters. | |
| Commands | |
| -------- | |
| * The :command:`add_custom_command` and :command:`add_custom_target` | |
| commands learned a new ``BYPRODUCTS`` option to specify files | |
| produced as side effects of the custom commands. These are not | |
| outputs because they do not always have to be newer than inputs. | |
| * The :command:`add_custom_command` and :command:`add_custom_target` | |
| commands learned a new ``USES_TERMINAL`` option to request that | |
| the command be given direct access to the terminal if possible. | |
| The :generator:`Ninja` generator will places such commands in the | |
| ``console`` :prop_gbl:`pool <JOB_POOLS>`. Build targets provided by CMake | |
| that are meant for individual interactive use, such as ``install``, are now | |
| placed in this pool. | |
| * A new :command:`continue` command was added that can be called inside loop | |
| contexts to end the current iteration and start the next one at the top of | |
| the loop block. | |
| * The :command:`file(LOCK)` subcommand was created to allow CMake | |
| processes to synchronize through file and directory locks. | |
| * The :command:`file(STRINGS)` now supports UTF-16LE, UTF-16BE, | |
| UTF-32LE, UTF-32BE as ``ENCODING`` options. | |
| * The :command:`install(EXPORT)` command now works with an absolute | |
| ``DESTINATION`` even if targets in the export set are installed | |
| with a destination or :ref:`usage requirements <Target Usage Requirements>` | |
| specified relative to the install prefix. The value of the | |
| :variable:`CMAKE_INSTALL_PREFIX` variable is hard-coded into the installed | |
| export file as the base for relative references. | |
| * The :command:`try_compile` command source file signature now honors | |
| link flags (e.g. :variable:`CMAKE_EXE_LINKER_FLAGS`) in the generated | |
| test project. See policy :policy:`CMP0056`. | |
| * The :command:`try_run` command learned to honor the ``LINK_LIBRARIES`` | |
| option just as :command:`try_compile` already does. | |
| * The :command:`file(GENERATE)` command now generates the output file with | |
| the same permissions as the input file if set. | |
| * The :command:`file(GENERATE)` command can now generate files which are | |
| used as source files for buildsystem targets. Generated files | |
| automatically get their :prop_sf:`GENERATED` property set to ``TRUE``. | |
| Variables | |
| --------- | |
| * The :variable:`CMAKE_MATCH_COUNT` variable was introduced to record the | |
| number of matches made in the last regular expression matched in an | |
| :command:`if` command or a :command:`string` command. | |
| Properties | |
| ---------- | |
| * An :prop_tgt:`ANDROID_API_MIN` target property was introduced to | |
| specify the minimum version to be targeted by the toolchain. | |
| * A :prop_sf:`VS_SHADER_FLAGS` source file property was added to specify | |
| additional shader flags to ``.hlsl`` files, for the Visual Studio | |
| generators. | |
| Modules | |
| ------- | |
| * The :module:`ExternalData` module learned to support | |
| :ref:`Custom Fetch Scripts <ExternalData Custom Fetch Scripts>`. | |
| This allows projects to specify custom ``.cmake`` scripts for | |
| fetching data objects during the build. | |
| * The :module:`ExternalProject` module learned options to create | |
| independent external project step targets that do not depend | |
| on the builtin steps. | |
| * The :module:`ExternalProject` module :command:`ExternalProject_Add` | |
| command learned a new ``CMAKE_CACHE_DEFAULT_ARGS`` option to | |
| initialize cache values in the external project without setting | |
| them on future builds. | |
| * The :module:`ExternalProject` module :command:`ExternalProject_Add` | |
| command learned a new ``TEST_EXCLUDE_FROM_MAIN`` option to exclude | |
| tests from the main build. | |
| * The :module:`ExternalProject` module :command:`ExternalProject_Add` | |
| command learned a new ``UPDATE_DISCONNECTED`` option to avoid | |
| automatically updating the source tree checkout from version control. | |
| * The :module:`FindCUDA` module learned about the ``cusolver`` | |
| library in CUDA 7.0. | |
| * The :module:`FindGit` module learned to find the ``git`` command-line tool | |
| that comes with GitHub for Windows installed in user home directories. | |
| * A :module:`FindGSL` module was introduced to find the | |
| GNU Scientific Library. | |
| * A :module:`FindIntl` module was introduced to find the | |
| Gettext ``libintl`` library. | |
| * The :module:`FindLATEX` module learned to support components. | |
| * The :module:`FindMPI` module learned to find MS-MPI on Windows. | |
| * The :module:`FindOpenSSL` module now reports ``crypto`` and ``ssl`` | |
| libraries separately in ``OPENSSL_CRYPTO_LIBRARY`` and | |
| ``OPENSSL_SSL_LIBRARY``, respectively, to allow applications to | |
| link to one without the other. | |
| * The :module:`WriteCompilerDetectionHeader` module learned to | |
| create a define for portability of the ``cxx_thread_local`` feature. | |
| The define expands to either the C++11 ``thread_local`` keyword, or a | |
| pre-standardization compiler-specific equivalent, as appropriate. | |
| * The :module:`WriteCompilerDetectionHeader` module learned to create | |
| multiple output files per compiler and per language, instead of creating | |
| one large file. | |
| CTest | |
| ----- | |
| * The :command:`ctest_coverage` command learned to support Delphi coverage. | |
| * The :command:`ctest_coverage` command learned to support Javascript coverage. | |
| * The :module:`CTestCoverageCollectGCOV` module was introduced as an | |
| alternative to the :command:`ctest_coverage` command for collecting | |
| ``gcov`` results for submission to CDash. | |
| CPack | |
| ----- | |
| * The :module:`CPackRPM` module learned options to set per-component | |
| descriptions and summaries. See the | |
| :variable:`CPACK_RPM_<component>_PACKAGE_DESCRIPTION` and | |
| :variable:`CPACK_RPM_<component>_PACKAGE_SUMMARY` variables. | |
| * The :module:`CPackRPM` module learned options to specify | |
| requirements for pre- and post-install scripts. See the | |
| :variable:`CPACK_RPM_PACKAGE_REQUIRES_PRE` and | |
| :variable:`CPACK_RPM_PACKAGE_REQUIRES_POST` variables. | |
| * The :module:`CPackRPM` module learned options to specify | |
| requirements for pre- and post-uninstall scripts. See the | |
| :variable:`CPACK_RPM_PACKAGE_REQUIRES_PREUN` and | |
| :variable:`CPACK_RPM_PACKAGE_REQUIRES_POSTUN` variables. | |
| * The :module:`CPackRPM` module learned a new | |
| :variable:`CPACK_RPM_<COMPONENT>_PACKAGE_PREFIX` variable to | |
| specify a component-specific value to use instead of | |
| :variable:`CPACK_PACKAGING_INSTALL_PREFIX`. | |
| * The :module:`CPackRPM` module learned a new | |
| :variable:`CPACK_RPM_RELOCATION_PATHS` variable to | |
| specify multiple relocation prefixes for a single rpm package. | |
| Other | |
| ----- | |
| * The :manual:`cmake(1)` ``-E tar`` command now supports creating | |
| ``.xz``-compressed archives with the ``J`` flag. | |
| * The :manual:`cmake(1)` ``-E tar`` command learned a new | |
| ``--files-from=<file>`` option to specify file names using | |
| lines in a file to overcome command-line length limits. | |
| * The :manual:`cmake(1)` ``-E tar`` command learned a new | |
| ``--mtime=<date>`` option to specify the modification time | |
| recorded in tarball entries. | |
| * The :manual:`Compile Features <cmake-compile-features(7)>` functionality | |
| is now aware of features supported by more compilers, including: | |
| * Apple Clang (``AppleClang``) for Xcode versions 4.4 though 6.1. | |
| * GNU compiler versions 4.4 through 5.0 on UNIX and Apple (``GNU``). | |
| * Microsoft Visual Studio (``MSVC``) for versions 2010 through 2015. | |
| * Oracle SolarisStudio (``SunPro``) version 12.4. | |
| * The :ref:`Qt AUTORCC` feature now tracks files listed in ``.qrc`` files | |
| as dependencies. If an input file to the ``rcc`` tool is changed, the tool | |
| is automatically re-run. | |
| New Diagnostics | |
| =============== | |
| * The :command:`break` command now rejects calls outside of a loop | |
| context or that pass arguments to the command. | |
| See policy :policy:`CMP0055`. | |
| Deprecated and Removed Features | |
| =============================== | |
| * Files written in the :manual:`cmake-language(7)`, such as | |
| ``CMakeLists.txt`` or ``*.cmake`` files, are now expected to be | |
| encoded as UTF-8. If files are already ASCII, they will be | |
| compatible. If files were in a different encoding, including | |
| Latin 1, they will need to be converted. | |
| * The :module:`FindOpenGL` module no longer explicitly searches | |
| for any dependency on X11 libraries with the :module:`FindX11` | |
| module. Such dependencies should not need to be explicit. | |
| Applications using X11 APIs themselves should find and link | |
| to X11 libraries explicitly. | |
| * The implementation of CMake now relies on some C++ compiler features which | |
| are not supported by some older compilers. As a result, those old compilers | |
| can no longer be used to build CMake itself. CMake continues to be able to | |
| generate Makefiles and project files for users of those old compilers | |
| however. Compilers known to no longer be capable of building CMake are: | |
| * Visual Studio 6 and 7.0 -- superseded by VisualStudio 7.1 and newer. | |
| * GCC 2.95 -- superseded by GCC 3 and newer compilers. | |
| * Borland compilers -- superseded by other Windows compilers. | |
| * Compaq compilers -- superseded by other compilers. | |
| * SGI compilers -- IRIX was dropped as a host platform. | |
| Other Changes | |
| ============= | |
| * On Windows and OS X, commands supporting network communication | |
| via ``https``, such as :command:`file(DOWNLOAD)`, | |
| :command:`file(UPLOAD)`, and :command:`ctest_submit`, now support | |
| SSL/TLS even when CMake is not built against OpenSSL. | |
| The Windows or OS X native SSL/TLS implementation is used by default. | |
| OS-configured certificate authorities will be trusted automatically. | |
| On other platforms, when CMake is built with OpenSSL, these | |
| commands now search for OS-configured certificate authorities | |
| in a few ``/etc`` paths to be trusted automatically. | |
| * On OS X with Makefile and Ninja generators, when a compiler is found | |
| in ``/usr/bin`` it is now mapped to the corresponding compiler inside | |
| the Xcode application folder, if any. This allows such build | |
| trees to continue to work with their original compiler even when | |
| ``xcode-select`` switches to a different Xcode installation. | |
| * The Visual Studio generators now write solution and project | |
| files in UTF-8 instead of Windows-1252. Windows-1252 supported | |
| Latin 1 languages such as those found in North and South America | |
| and Western Europe. With UTF-8, additional languages are now | |
| supported. | |
| * The :generator:`Xcode` generator no longer requires a value for | |
| the :variable:`CMAKE_MAKE_PROGRAM` variable to be located up front. | |
| It now locates ``xcodebuild`` when needed at build time. | |
| * When building CMake itself using SolarisStudio 12, the default ``libCStd`` | |
| standard library is not sufficient to build CMake. The SolarisStudio | |
| distribution supports compiler options to use ``STLPort4`` or ``libstdc++``. | |
| An appropriate option to select the standard library is now added | |
| automatically when building CMake with SolarisStudio compilers. |