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319 lines
13 KiB
ReStructuredText
319 lines
13 KiB
ReStructuredText
CMake 3.6 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 3.5 include the following.
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New Features
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============
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Generators
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----------
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* The :generator:`Ninja` generator learned to produce phony targets
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of the form ``sub/dir/all`` to drive the build of a subdirectory.
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This is equivalent to ``cd sub/dir; make all`` with
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:ref:`Makefile Generators`.
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* The :generator:`Ninja` generator now includes system header files in build
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dependencies to ensure correct re-builds when system packages are updated.
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* The :generator:`Visual Studio 14 2015` generator learned to support the
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Clang/C2 toolsets, e.g. with the ``-T v140_clang_3_7`` option.
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This feature is experimental.
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Commands
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--------
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* The :command:`add_custom_command` and :command:`add_custom_target` commands
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learned how to use the :prop_tgt:`CROSSCOMPILING_EMULATOR` executable
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target property.
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* The :command:`install` command learned a new ``EXCLUDE_FROM_ALL`` option
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to leave installation rules out of the default installation.
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* The :command:`list` command gained a ``FILTER`` sub-command to filter
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list elements by regular expression.
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* The :command:`string(TIMESTAMP)` and :command:`file(TIMESTAMP)`
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commands gained support for the ``%s`` placeholder. This is
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the number of seconds since the UNIX Epoch.
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Variables
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---------
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* A :variable:`CMAKE_DEPENDS_IN_PROJECT_ONLY` variable was introduced
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to tell :ref:`Makefile Generators` to limit dependency scanning only
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to files in the project source and build trees.
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* A new :variable:`CMAKE_HOST_SOLARIS` variable was introduced to
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indicate when CMake is running on an Oracle Solaris host.
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* A :variable:`CMAKE_<LANG>_STANDARD_INCLUDE_DIRECTORIES` variable was
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added for use by toolchain files to specify system include directories
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to be appended to all compiler command lines.
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* The :variable:`CMAKE_<LANG>_STANDARD_LIBRARIES` variable is now documented.
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It is intended for use by toolchain files to specify system libraries to be
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added to all linker command lines.
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* A :variable:`CMAKE_NINJA_OUTPUT_PATH_PREFIX` variable was introduced
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to tell the :generator:`Ninja` generator to configure the generated
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``build.ninja`` file for use as a ``subninja``.
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* A :variable:`CMAKE_TRY_COMPILE_PLATFORM_VARIABLES` variable was
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added for use by toolchain files to specify platform-specific
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variables that must be propagated by the :command:`try_compile`
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command into test projects.
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* A :variable:`CMAKE_TRY_COMPILE_TARGET_TYPE` variable was added
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to optionally tell the :command:`try_compile` command to build
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a static library instead of an executable. This is useful for
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cross-compiling toolchains that cannot link binaries without
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custom flags or scripts.
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Properties
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----------
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* A :prop_tgt:`DEPLOYMENT_REMOTE_DIRECTORY` target property was introduced
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to tell the :generator:`Visual Studio 9 2008` and
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:generator:`Visual Studio 8 2005` generators to generate the "remote
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directory" for WinCE project deployment and debugger settings.
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* A :prop_tgt:`<LANG>_CLANG_TIDY` target property and supporting
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:variable:`CMAKE_<LANG>_CLANG_TIDY` variable were introduced to tell the
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:ref:`Makefile Generators` and the :generator:`Ninja` generator to run
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``clang-tidy`` along with the compiler for ``C`` and ``CXX`` languages.
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* A :prop_test:`TIMEOUT_AFTER_MATCH` test property was introduced to
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optionally tell CTest to enforce a secondary timeout after matching
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certain output from a test.
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* A :prop_tgt:`VS_CONFIGURATION_TYPE` target property was introduced
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to specify a custom project file type for :ref:`Visual Studio Generators`
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supporting VS 2010 and above.
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* A :prop_dir:`VS_STARTUP_PROJECT` directory property was introduced
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to specify for :ref:`Visual Studio Generators` the default startup
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project for generated solutions (``.sln`` files).
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Modules
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-------
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* The :module:`CMakePushCheckState` module now pushes/pops/resets the variable
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``CMAKE_EXTRA_INCLUDE_FILE`` used in :module:`CheckTypeSize`.
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* The :module:`ExternalProject` module leared the ``GIT_SHALLOW 1``
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option to perform a shallow clone of a Git repository.
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* The :module:`ExternalProject` module learned to initialize Git submodules
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recursively and also to initialize new submodules on updates. Use the
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``GIT_SUBMODULES`` option to restrict which submodules are initialized and
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updated.
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* The :module:`ExternalProject` module leared the ``DOWNLOAD_NO_EXTRACT 1``
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argument to skip extracting the file that is downloaded (e.g., for
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self-extracting shell installers or ``.msi`` files).
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* The :module:`ExternalProject` module now uses ``TLS_VERIFY`` when fetching
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from git repositories.
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* The :module:`FindBLAS` and :module:`FindLAPACK` modules learned to
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support `OpenBLAS <http://www.openblas.net>`__.
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* The :module:`FindCUDA` module learned to find the ``cublas_device`` library.
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* The :module:`FindGTest` module ``gtest_add_tests`` function now causes
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CMake to automatically re-run when test sources change so that they
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can be re-scanned.
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* The :module:`FindLTTngUST` module was introduced to find the LTTng-UST
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library.
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* The :module:`FindPkgConfig` module learned to optionally create imported
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targets for the libraries it has found.
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* The :module:`FindProtobuf` module learned to provide a ``Protobuf_VERSION``
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variable and check the version number requested in a :command:`find_package`
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call.
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* The :module:`InstallRequiredSystemLibraries` module learned a new
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``CMAKE_INSTALL_UCRT_LIBRARIES`` option to enable app-local deployment
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of the Windows Universal CRT libraries with Visual Studio 2015.
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Platforms
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---------
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* The Clang compiler is now supported on CYGWIN.
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* Support was added for the Bruce C Compiler with compiler id ``Bruce``.
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CTest
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-----
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* The :command:`ctest_update` command now looks at the
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:variable:`CTEST_GIT_INIT_SUBMODULES` variable to determine whether
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submodules should be updated or not before updating.
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* The :command:`ctest_update` command will now synchronize submodules on an
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update. Updates which add submodules or change a submodule's URL will now be
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pulled properly.
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CPack
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-----
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* The :cpack_gen:`CPack DEB Generator` learned how to handle ``$ORIGIN``
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in ``CMAKE_INSTALL_RPATH`` when :variable:`CPACK_DEBIAN_PACKAGE_SHLIBDEPS`
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is used for dependency auto detection.
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* The :cpack_gen:`CPack DEB Generator` learned how to generate
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``DEBIAN/shlibs`` control file when package contains shared libraries.
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* The :cpack_gen:`CPack DEB Generator` learned how to generate
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``DEBIAN/postinst`` and ``DEBIAN/postrm`` files if the package installs
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libraries in ldconfig-controlled locations (e.g. ``/lib/``, ``/usr/lib/``).
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* The :cpack_gen:`CPack DEB Generator` learned how to generate dependencies
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between Debian packages if multi-component setup is used and
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:variable:`CPACK_COMPONENT_<compName>_DEPENDS` variables are set.
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For backward compatibility this feature is disabled by default.
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See :variable:`CPACK_DEBIAN_ENABLE_COMPONENT_DEPENDS`.
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* The :cpack_gen:`CPack DEB Generator` learned how to set custom package
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file names including how to generate properly-named Debian packages::
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<PackageName>_<VersionNumber>-<DebianRevisionNumber>_<DebianArchitecture>.deb
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For backward compatibility this feature is disabled by default. See
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:variable:`CPACK_DEBIAN_FILE_NAME` and
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:variable:`CPACK_DEBIAN_<COMPONENT>_FILE_NAME`.
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* The :cpack_gen:`CPack DEB Generator` learned how to set the package
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release number (``DebianRevisionNumber`` in package file name when
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used in combination with ``DEB-DEFAULT`` value set by
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:variable:`CPACK_DEBIAN_FILE_NAME`).
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See :variable:`CPACK_DEBIAN_PACKAGE_RELEASE`.
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* The :cpack_gen:`CPack DEB Generator` learned how to set the package
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architecture per-component.
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See :variable:`CPACK_DEBIAN_<COMPONENT>_PACKAGE_ARCHITECTURE`.
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* The :cpack_gen:`CPack DragNDrop Generator` learned a new option to skip the
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``/Applications`` symlink.
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See the :variable:`CPACK_DMG_DISABLE_APPLICATIONS_SYMLINK` variable.
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* The :module:`CPackIFW` module gained a new
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:command:`cpack_ifw_update_repository` command to update a QtIFW-specific
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repository from a remote repository.
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* The :cpack_gen:`CPack RPM Generator` learned how to set RPM ``dist`` tag
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as part of RPM ``Release:`` tag when enabled (mandatory on some Linux
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distributions for e.g. on Fedora).
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See :variable:`CPACK_RPM_PACKAGE_RELEASE_DIST`.
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* The :cpack_gen:`CPack RPM Generator` learned how to set default values
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for owning user/group and file/directory permissions of package content.
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See :variable:`CPACK_RPM_DEFAULT_USER`, :variable:`CPACK_RPM_DEFAULT_GROUP`,
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:variable:`CPACK_RPM_DEFAULT_FILE_PERMISSIONS`,
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:variable:`CPACK_RPM_DEFAULT_DIR_PERMISSIONS` and their per component
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counterparts.
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* The :cpack_gen:`CPack RPM Generator` learned how to set user defined
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package file names, how to specify that rpmbuild should decide on file
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name format as well as handling of multiple rpm packages generated by a
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single user defined spec file.
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See :variable:`CPACK_RPM_PACKAGE_NAME` and
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:variable:`CPACK_RPM_<component>_PACKAGE_NAME`.
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* The :cpack_gen:`CPack RPM Generator` learned how to correctly handle symlinks
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that are pointing outside generated packages.
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Other
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-----
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* The :manual:`Compile Features <cmake-compile-features(7)>` functionality
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is now aware of features supported by Intel C++ compilers versions 12.1
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through 16.0 on UNIX platforms.
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Deprecated and Removed Features
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===============================
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* The :module:`CMakeForceCompiler` module and its macros are now deprecated.
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See module documentation for an explanation.
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* The :command:`find_library`, :command:`find_path`, and :command:`find_file`
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commands no longer search in installation prefixes derived from the ``PATH``
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environment variable on non-Windows platforms. This behavior was added in
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CMake 3.3 to support Windows hosts but has proven problematic on UNIX hosts.
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Users that keep some ``<prefix>/bin`` directories in the ``PATH`` just for
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their tools do not necessarily want any supporting ``<prefix>/lib``
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directories searched. One may set the ``CMAKE_PREFIX_PATH`` environment
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variable with a :ref:`semicolon-separated list <CMake Language Lists>` of prefixes that are
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to be searched.
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* The :generator:`Visual Studio 7 .NET 2003` generator is now
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deprecated and will be removed in a future version of CMake.
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* The :generator:`Visual Studio 7` generator (for VS .NET 2002) has been
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removed. It had been deprecated since CMake 3.3.
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* The :generator:`Visual Studio 6` generator has been removed.
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It had been deprecated since CMake 3.3.
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Other Changes
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=============
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* The precompiled OS X binary provided on ``cmake.org`` now requires
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OS X 10.7 or newer.
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* On Linux and FreeBSD platforms, when building CMake itself from source and
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not using a system-provided libcurl, OpenSSL is now used by default if it is
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found on the system. This enables SSL/TLS support for commands supporting
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network communication via ``https``, such as :command:`file(DOWNLOAD)`,
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:command:`file(UPLOAD)`, and :command:`ctest_submit`.
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* The :manual:`cmake(1)` ``--build`` command-line tool now rejects multiple
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``--target`` options with an error instead of silently ignoring all but the
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last one.
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* :prop_tgt:`AUTOMOC` now diagnoses name collisions when multiple source
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files in different directories use ``#include <moc_foo.cpp>`` with the
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same name (because the generated ``moc_foo.cpp`` files would collide).
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* The :module:`FindBISON` module ``BISON_TARGET`` macro now supports
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special characters by passing the ``VERBATIM`` option to internal
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:command:`add_custom_command` calls. This may break clients that
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added escaping manually to work around the bug.
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* The :module:`FindFLEX` module ``FLEX_TARGET`` macro now supports
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special characters by passing the ``VERBATIM`` option to internal
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:command:`add_custom_command` calls. This may break clients that
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added escaping manually to work around the bug.
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* The :module:`FindProtobuf` module input and output variables were all renamed
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from ``PROTOBUF_`` to ``Protobuf_`` for consistency with other find modules.
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Input variables of the old case will be honored if provided, and output
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variables of the old case are always provided.
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* The :cpack_gen:`CPack RPM Generator` now supports upper cased component
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names in per component CPackRPM specific variables.
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E.g. component named ``foo`` now expects component specific
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variable to be ``CPACK_RPM_FOO_PACKAGE_NAME`` while before
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it expected ``CPACK_RPM_foo_PACKAGE_NAME``.
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Upper cased component name part in variables is compatible
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with convention used for other CPack variables.
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For back compatibility old format of variables is still valid
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and preferred if both versions of variable are set, but the
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preferred future use is upper cased component names in variables.
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New variables that will be added to CPackRPM in later versions
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will only support upper cased component variable format.
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* The CPack NSIS generator's configuration file template was fixed to
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quote the path to the uninstaller tool used by the
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:variable:`CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL` option.
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This avoids depending on an insecure Windows feature to run an
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uninstaller tool with a space in the path.
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