CMake 3.7 Release Notes *********************** .. only:: html .. contents:: Changes made since CMake 3.6 include the following. New Features ============ Platforms --------- * CMake now supports :ref:`Cross Compiling for Android` with simple toolchain files. * The Clang compiler is now supported on AIX. Generators ---------- * The :generator:`Ninja` generator learned to conditionally support Fortran when using a ``ninja`` tool that has the necessary features. See generator documentation for details. * The :generator:`Ninja` generator learned to produce phony targets of the form ``sub/dir/{test,install,package}`` to drive the build of a subdirectory installation, test or packaging target. This is equivalent to ``cd sub/dir; make {test,install,package}`` with :ref:`Makefile Generators`. * The :generator:`Visual Studio 15 2017` generator was added. This is experimental and based on "Visual Studio 2017 RC" because this version of VS has not been released. * :ref:`Visual Studio Generators` for VS 2010 and above learned to place ``.natvis`` source files into VS project files properly. * The :generator:`Xcode` generator's rudimentary Swift language support learned to honor a new :variable:`CMAKE_Swift_LANGUAGE_VERSION` variable to tell Xcode what version of Swift is used by the source. * The :generator:`CodeLite` generator gained a new :variable:`CMAKE_CODELITE_USE_TARGETS` option to change project creation from projects to targets. Commands -------- * The :command:`add_custom_command` command gained a new ``DEPFILE`` option that works with the :generator:`Ninja` generator to provide implicit dependency information to the build tool. * The :command:`cmake_parse_arguments` command gained a new ``PARSE_ARGV`` mode to read arguments directly from ``ARGC`` and ``ARGV#`` variables inside a :command:`function` body. * The :command:`export` command gained an ``ANDROID_MK`` option to generate ``Android.mk`` files referencing CMake-built libraries as prebuilts for the Android NDK build system. * The :command:`file(DOWNLOAD)` and :command:`file(UPLOAD)` commands gained ``HTTPHEADER `` and ``USERPWD :`` options. * The :command:`find_library` and :command:`find_package` commands learned to search in ``lib32/`` directories when the build targets a 32-bit architecture. See the :prop_gbl:`FIND_LIBRARY_USE_LIB32_PATHS` global property. * The :command:`find_package` command gained the possibility of sorting compatible libraries by ``NAME`` or by ``NATURAL`` sorting by setting the two new variables :variable:`CMAKE_FIND_PACKAGE_SORT_ORDER` and :variable:`CMAKE_FIND_PACKAGE_SORT_DIRECTION`. * The :command:`if` command gained new boolean comparison operations ``LESS_EQUAL``, ``GREATER_EQUAL``, ``STRLESS_EQUAL``, ``STRGREATER_EQUAL``, ``VERSION_LESS_EQUAL``, and ``VERSION_GREATER_EQUAL``. * The :command:`install` command gained an ``EXPORT_ANDROID_MK`` subcommand to install ``Android.mk`` files referencing installed libraries as prebuilts for the Android NDK build system. * The :command:`string(TIMESTAMP)` and :command:`file(TIMESTAMP)` commands gained support for the ``%a`` and ``%b`` placeholders. These are the abbreviated weekday and month names. * The :command:`try_compile` command source file signature now honors configuration-specific flags (e.g. :variable:`CMAKE__FLAGS_DEBUG`) in the generated test project. Previously only the default such flags for the current toolchain were used. See policy :policy:`CMP0066`. Variables --------- * Variable :variable:`CMAKE_FIND_PACKAGE_SORT_ORDER` was added to control the sorting mode of the :command:`find_package` command. * Variable :variable:`CMAKE_FIND_PACKAGE_SORT_DIRECTION` was added to control the sorting direction the :command:`find_package` command. * :variable:`Toolchain files ` may now set a :variable:`CMAKE__FLAGS_INIT` variable to initialize the :variable:`CMAKE__FLAGS` cache entry the first time a language is enabled in a build tree. * :variable:`Toolchain files ` may now set :variable:`CMAKE_EXE_LINKER_FLAGS_INIT`, :variable:`CMAKE_SHARED_LINKER_FLAGS_INIT`, and :variable:`CMAKE_MODULE_LINKER_FLAGS_INIT` variables to initialize the :variable:`CMAKE_EXE_LINKER_FLAGS`, :variable:`CMAKE_SHARED_LINKER_FLAGS`, and :variable:`CMAKE_MODULE_LINKER_FLAGS` cache entries the first time a language is enabled in a build tree. Properties ---------- * On Apple platforms the :prop_tgt:`BUNDLE_EXTENSION` target property now also applies to Frameworks and App Bundles. * A :prop_dir:`BINARY_DIR` directory property was added to get the absolute path to the binary directory corresponding to the source directory on which the property is read. * A :prop_dir:`BUILDSYSTEM_TARGETS` directory property was added to get the list of logical buildsystem target names added by the project in a directory. * A :prop_tgt:`LINK_WHAT_YOU_USE` target property and supporting :variable:`CMAKE_LINK_WHAT_YOU_USE` variable were introduced to detect (on UNIX) shared libraries that are linked but not needed by running ``ldd -r -u``. * A :prop_dir:`SOURCE_DIR` directory property was added to get the absolute path to the source directory associated with a directory. * A :prop_dir:`SUBDIRECTORIES` directory property was added to get the list of subdirectories added by a project in a directory. * A :prop_tgt:`VS_SDK_REFERENCES` target property was added to tell :ref:`Visual Studio Generators` to reference the named SDKs. * A :prop_sf:`VS_TOOL_OVERRIDE` source file property was created to tell :ref:`Visual Studio Generators` what tool to use for a source file. * The :prop_tgt:`WINDOWS_EXPORT_ALL_SYMBOLS` target property now applies to executable targets with the :prop_tgt:`ENABLE_EXPORTS` property set. * A :prop_sf:`XCODE_FILE_ATTRIBUTES` source file property was added to tell the :generator:`Xcode` generator to generate custom content in the Xcode project attributes for the file. Modules ------- * An :module:`AndroidTestUtilities` module was added to manage transfer of test data to an Android device. * The :module:`CheckFortranSourceCompiles` module macro ``CHECK_Fortran_SOURCE_COMPILES`` gained a ``SRC_EXT`` option to specify a custom test Fortran source file extension. * The :module:`ExternalProject` module gained ``HTTP_USERNAME`` and ``HTTP_PASSWORD`` options to set http download credentials. * The :module:`ExternalProject` module gained a ``HTTP_HEADER`` option to add http download headers. * The :module:`FindBISON` module ``BISON_TARGET`` macro learned a new ``REPORT_FILE`` option to specify the bison ``--report-file=`` option. * The :module:`FindBZip2` module now provides imported targets. * A :module:`FindICU` module was introduced to find the International Components for Unicode (ICU) libraries and programs. * The :module:`FindMatlab` module learned to find the SIMULINK and MAT components. * The :module:`FindMatlab` module :command:`matlab_add_mex` command learned to add executables and modules. * The :module:`FindMatlab` module :command:`matlab_add_unit_test` command learned to support inline Matlab test code. * The :module:`FindOpenCL` module now provides imported targets. * The :module:`FindOpenMP` module learned to detect the OpenMP version (specification date) from the compiler. * A :module:`FindVulkan` module was added. * The :module:`GenerateExportHeader` module learned a new ``CUSTOM_CONTENT_FROM_VARIABLE`` option to specify a variable containing custom content for inclusion in the generated header. * The :module:`GNUInstallDirs` module gained a new :command:`GNUInstallDirs_get_absolute_install_dir` command. * The :module:`UseJava` module gained APIs to "export" jar targets for use by external CMake projects. See the ``install_jar_exports`` and ``export_jars`` functions. CTest ----- * CTest now supports test fixtures through the new :prop_test:`FIXTURES_SETUP`, :prop_test:`FIXTURES_CLEANUP` and :prop_test:`FIXTURES_REQUIRED` test properties. When using regular expressions or ``--rerun-failed`` to limit the tests to be run, a fixture's setup and cleanup tests will automatically be added to the execution set if any test requires that fixture. * The :command:`ctest_configure`, :command:`ctest_build`, :command:`ctest_test`, :command:`ctest_coverage`, and :command:`ctest_upload` commands gained a new ``CAPTURE_CMAKE_ERROR`` option to capture any errors that occur as the commands run into a variable and avoid affecting the return code of the :manual:`ctest(1)` process. CPack ----- * CPack gained a :cpack_gen:`CPack productbuild Generator` on OS X. * CPack gained a new :variable:`CPACK_PACKAGE_CHECKSUM` variable to enable generation of a checksum file for each package file. * The :cpack_gen:`CPack Deb Generator` learned to support long file names when archive format is set to GNU tar. See :variable:`CPACK_DEBIAN_ARCHIVE_TYPE` * The :module:`CPackIFW` module gained a new :command:`cpack_ifw_add_package_resources` command to include additional resources in the installer binary. * The :module:`CPackIFW` module :command:`cpack_ifw_configure_component` and :command:`cpack_ifw_configure_component_group` commands gained a new ``USER_INTERFACES`` option to add a list of additional pages to the IFW installer. * The :cpack_gen:`CPack RPM Generator` learned to generate debuginfo packages on demand. See :variable:`CPACK_RPM_DEBUGINFO_PACKAGE` and its per component version. * The :cpack_gen:`CPack RPM Generator` learned to generate source rpm (SRPM) packages on demand. See :variable:`CPACK_RPM_PACKAGE_SOURCES`, :variable:`CPACK_RPM_SOURCE_PKG_BUILD_PARAMS` and :variable:`CPACK_RPM_SOURCE_PKG_PACKAGING_INSTALL_PREFIX`. * The :cpack_gen:`CPack NSIS Generator` now supports :variable:`CPACK_NSIS__INSTALL_DIRECTORY`. This can be used to set component specific installation directories. * The :cpack_gen:`CPack WiX Generator` now supports :variable:`CPACK_WIX_SKIP_PROGRAM_FOLDER` to allow specification of a custom absolute installation prefix outside of the ProgramFiles folders. * The :cpack_gen:`CPack WiX Generator` now supports :variable:`CPACK_COMPONENT__DISABLED`. This can be used to deselect a component from being installed by default. * The :cpack_gen:`CPack WiX Generator` now supports :variable:`CPACK_WIX_PATCH_FILE` fragments for Feature elements. * The :cpack_gen:`CPack WiX Generator` now supports :variable:`CPACK_WIX_ROOT_FEATURE_TITLE` and :variable:`CPACK_WIX_ROOT_FEATURE_DESCRIPTION` to allow the specification of a custom title and description for the root feature element. Other ----- * :manual:`cmake(1)` gained a ``-E capabilities`` option to provide a machine-readable (JSON) description of the capabilities of the cmake tool (available generators, etc.). * A new :manual:`cmake-server(7)` mode was added to provide semantic information about a CMake-generated buildsystem to clients through a JSON protocol. Currently all protocols are experimental and subject to change. * The :manual:`cmake(1)` command learned a ``--trace-source=`` option. * :manual:`ccmake(1)` learned to support vim-like navigation bindings. * :manual:`cmake-gui(1)` gained a button to open the generated project file for :ref:`Visual Studio Generators` and the :generator:`Xcode` generator. Deprecated and Removed Features =============================== * We no longer provide Linux i386 binaries for download from ``cmake.org`` for new versions of CMake. * Vim support files ``cmake-indent.vim``, ``cmake-syntax.vim``, and ``cmake-help.vim`` have been removed in favor of the files now provided from the `vim-cmake-syntax`_ project. * Support for building CMake itself with some compilers was dropped: * Visual Studio 7.1 and 2005 -- superseded by VS 2008 and above * MinGW.org mingw32 -- superseded by MSYS2 mingw32 and mingw64 CMake still supports generating build systems for other projects using these compilers. Other Changes ============= * The Fortran dependency scanner learned to support the syntax of `Fortran Submodules`_. * Vim support files ``indent/cmake.vim`` and ``syntax/cmake.vim`` from the `vim-cmake-syntax`_ project are now distributed with CMake. .. _`Fortran Submodules`: http://fortranwiki.org/fortran/show/Submodules .. _`vim-cmake-syntax`: https://github.com/pboettch/vim-cmake-syntax