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308 lines
13 KiB
ReStructuredText
308 lines
13 KiB
ReStructuredText
CMake 3.11 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 3.10 include the following.
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New Features
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============
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Platforms
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---------
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* TI C/C++ compilers are now supported by the :generator:`Ninja` generator.
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Generators
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----------
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* The :generator:`CodeBlocks` extra generator learned to check a
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:variable:`CMAKE_CODEBLOCKS_COMPILER_ID` variable for a custom
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compiler identification value to place in the project file.
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* The :ref:`Makefile Generators` and the :generator:`Ninja` generator learned
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to add compiler launcher tools along with the compiler for the ``Fortran``
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language (``C``, ``CXX``, and ``CUDA`` were supported previously).
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See the :variable:`CMAKE_<LANG>_COMPILER_LAUNCHER` variable and
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:prop_tgt:`<LANG>_COMPILER_LAUNCHER` target property for details.
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* :ref:`Visual Studio Generators` learned to support the ``COMPILE_LANGUAGE``
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:manual:`generator expression <cmake-generator-expressions(7)>` in
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target-wide :prop_tgt:`COMPILE_DEFINITIONS`,
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:prop_tgt:`INCLUDE_DIRECTORIES`, :prop_tgt:`COMPILE_OPTIONS`, and
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:command:`file(GENERATE)`. See generator expression documentation
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for caveats.
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* The :generator:`Xcode` generator learned to support the ``COMPILE_LANGUAGE``
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:manual:`generator expression <cmake-generator-expressions(7)>` in
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target-wide :prop_tgt:`COMPILE_DEFINITIONS` and
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:prop_tgt:`INCLUDE_DIRECTORIES`. It previously supported only
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:prop_tgt:`COMPILE_OPTIONS` and :command:`file(GENERATE)`.
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See generator expression documentation for caveats.
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Commands
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--------
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* :command:`add_library` and :command:`add_executable` commands can now be
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called without any sources and will not complain as long as sources are
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added later via the :command:`target_sources` command.
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* The :command:`file(DOWNLOAD)` and :command:`file(UPLOAD)` commands
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gained ``NETRC`` and ``NETRC_FILE`` options to specify use of a
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``.netrc`` file.
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* The :command:`target_compile_definitions` command learned to set the
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:prop_tgt:`INTERFACE_COMPILE_DEFINITIONS` property on
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:ref:`Imported Targets`.
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* The :command:`target_compile_features` command learned to set the
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:prop_tgt:`INTERFACE_COMPILE_FEATURES` property on :ref:`Imported Targets`.
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* The :command:`target_compile_options` command learned to set the
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:prop_tgt:`INTERFACE_COMPILE_OPTIONS` property on :ref:`Imported Targets`.
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* The :command:`target_include_directories` command learned to set the
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:prop_tgt:`INTERFACE_INCLUDE_DIRECTORIES` property on
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:ref:`Imported Targets`.
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* The :command:`target_sources` command learned to set the
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:prop_tgt:`INTERFACE_SOURCES` property on :ref:`Imported Targets`.
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* The :command:`target_link_libraries` command learned to set the
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:prop_tgt:`INTERFACE_LINK_LIBRARIES` property on :ref:`Imported Targets`.
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Variables
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---------
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* A :variable:`CMAKE_GENERATOR_INSTANCE` variable was introduced
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to hold the selected instance of the generator's corresponding
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native tools if multiple are available. This is used by the
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:generator:`Visual Studio 15 2017` generator to hold the
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selected instance of Visual Studio persistently.
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* A :variable:`CMAKE_INSTALL_DEFAULT_DIRECTORY_PERMISSIONS` variable was added
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to enable setting of default permissions for directories created implicitly
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during installation of files by :command:`install` and
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:command:`file(INSTALL)`, e.g. during ``make install``.
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* A :variable:`CMAKE_JOB_POOLS` variable was added specify a value to use for
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the :prop_gbl:`JOB_POOLS` property. This enables control over build
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parallelism with command line configuration parameters when using the Ninja
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generator.
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* The :variable:`CMAKE_NETRC` and :variable:`CMAKE_NETRC_FILE` variables
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were added to specify use of a ``.netrc`` file by the
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:command:`file(DOWNLOAD)` and :command:`file(UPLOAD)` commands and
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the :module:`ExternalProject` module.
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* A :variable:`CMAKE_CUDA_SEPARABLE_COMPILATION` variable was added to
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initialize the :prop_tgt:`CUDA_SEPARABLE_COMPILATION` target property
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on targets when they are created.
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Properties
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----------
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* The :prop_sf:`COMPILE_DEFINITIONS` source file property learned to support
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:manual:`generator expressions <cmake-generator-expressions(7)>`.
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* A :prop_sf:`COMPILE_OPTIONS` source file property was added to manage list
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of options to pass to the compiler.
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* An :prop_tgt:`IMPORTED_GLOBAL` target property was added to indicate
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whether an :ref:`IMPORTED target <Imported Targets>` is globally visible.
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It is automatically set to a true value for targets created with the
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``GLOBAL`` option to :command:`add_library` or :command:`add_executable`.
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Additionally, project code may now *promote* a local imported target
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to be globally visible by setting this property to ``TRUE``.
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* An :prop_sf:`INCLUDE_DIRECTORIES` source file property was added to specify
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list of preprocessor include file search directories.
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* Source file properties :prop_sf:`VS_SHADER_DISABLE_OPTIMIZATIONS` and
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:prop_sf:`VS_SHADER_ENABLE_DEBUG` have been added to specify more
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details of ``.hlsl`` sources with :ref:`Visual Studio Generators`.
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Modules
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-------
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* The :module:`CheckIncludeFiles` module :command:`CHECK_INCLUDE_FILES`
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command gained a ``LANGUAGE`` option to specify whether to check using the
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``C`` or ``CXX`` compiler.
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* The :module:`CMakePackageConfigHelpers` module
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:command:`write_basic_package_version_file` command learned a new
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``SameMinorVersion`` mode for the ``COMPATIBILITY`` argument.
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* The :module:`ExternalProject` module learned to substitute ``<DOWNLOAD_DIR>``
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in comments, commands, working directory and byproducts.
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* The :module:`ExternalProject` module gained ``NETRC`` and ``NETRC_FILE``
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options to specify use of a ``.netrc`` file.
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* A new :module:`FetchContent` module was added which supports populating
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content at configure time using any of the download/update methods
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supported by :command:`ExternalProject_Add`. This allows the content
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to be used immediately during the configure stage, such as with
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:command:`add_subdirectory`, etc. Hierarchical project structures are
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well supported, allowing parent projects to override the content details
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of child projects and ensuring content is not populated multiple times
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throughout the whole project tree.
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* The :module:`FindBLAS` and :module:`FindLAPACK` modules learned to support
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`FLAME`_ ``blis`` and ``libflame``.
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* The :module:`FindDoxygen` module :command:`doxygen_add_docs` function
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now supports a new ``DOXYGEN_VERBATIM_VARS`` list variable. Any
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``DOXYGEN_...`` variable contained in that list will bypass the automatic
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quoting logic, leaving its contents untouched when transferring them to the
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output ``Doxyfile``.
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* A :module:`FindIconv` module was added to locate iconv support.
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* The :module:`GenerateExportHeader` module ``GENERATE_EXPORT_HEADER`` command
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gained an ``INCLUDE_GUARD_NAME`` option to change the name of the include
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guard symbol written to the generated export header.
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Additionally, it now adds a comment after the closing ``#endif`` on the
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generated export header's include guard.
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* The :module:`UseJava` module ``add_jar`` command gained a
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``GENERATE_NATIVE_HEADERS`` option to generate native header files
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using ``javac -h`` for ``javac`` 1.8 or above. This supersedes
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``create_javah``, which no longer works with JDK 1.10 and above due
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to removal of the ``javah`` tool by `JEP 313`_.
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.. _`FLAME`: https://github.com/flame
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.. _`JEP 313`: https://openjdk.org/jeps/313
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Autogen
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-------
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* When using :prop_tgt:`AUTOMOC` or :prop_tgt:`AUTOUIC`, CMake now starts
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multiple parallel ``moc`` or ``uic`` processes to reduce the build time.
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A new :variable:`CMAKE_AUTOGEN_PARALLEL` variable and
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:prop_tgt:`AUTOGEN_PARALLEL` target property may be set to specify the
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number of parallel ``moc`` or ``uic`` processes to start. The default
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is derived from the number of CPUs on the host.
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CTest
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-----
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* The :command:`ctest_start` command no longer sets
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:variable:`CTEST_RUN_CURRENT_SCRIPT` due to issues with scoping if it is
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called from inside a function. Instead, it sets an internal variable in
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CTest. However, setting :variable:`CTEST_RUN_CURRENT_SCRIPT` to 0 at the
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global scope still prevents the script from being re-run at the end.
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CPack
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-----
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* :manual:`cpack(1)` gained ``--trace`` and ``--trace-expand`` options.
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* The :cpack_gen:`CPack IFW Generator` gained new
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:variable:`CPACK_IFW_PACKAGE_REMOVE_TARGET_DIR` variable to control
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if the target directory should not be deleted when uninstalling.
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* The :cpack_gen:`CPack RPM Generator` learned to enable enforcing of execute
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privileges on programs and shared libraries.
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See :variable:`CPACK_RPM_INSTALL_WITH_EXEC` variable.
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* A :variable:`CPACK_INSTALL_DEFAULT_DIRECTORY_PERMISSIONS` variable was added
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which serves the same purpose during packaging (e.g. ``make package``) as the
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:variable:`CMAKE_INSTALL_DEFAULT_DIRECTORY_PERMISSIONS` variable serves during
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installation (e.g. ``make install``).
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Other
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-----
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* :ref:`Alias Targets` may now alias :ref:`Imported Targets` that are
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created with the ``GLOBAL`` option to :command:`add_library`.
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* :ref:`Interface Libraries` may now have custom properties set on them if
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they start with either an underscore (``_``) or a lowercase ASCII character.
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The original intention was to only allow properties which made sense for
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``INTERFACE`` libraries, but it also blocked usage of custom properties.
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* The :manual:`cmake(1)` ``--open <dir>`` command-line option was added
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to open generated IDE projects like Visual Studio solutions or Xcode
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projects.
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Deprecated and Removed Features
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===============================
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* An explicit deprecation diagnostic was added for policies ``CMP0037``
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through ``CMP0054`` (``CMP0036`` and below were already deprecated).
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The :manual:`cmake-policies(7)` manual explains that the OLD behaviors
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of all policies are deprecated and that projects should port to the
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NEW behaviors.
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* The ``KDevelop3`` generator has been removed.
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Other Changes
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=============
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* Policy :policy:`CMP0037` no longer reserves target names associated
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with optional features, such as ``test`` and ``package``, unless
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the corresponding feature is enabled.
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* The :module:`FindOpenGL` module now prefers GLVND libraries if available.
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See policy :policy:`CMP0072`.
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* The minimum deployment target set in the
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:variable:`CMAKE_OSX_DEPLOYMENT_TARGET` variable used to be only
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applied for macOS regardless of the selected SDK. It is now properly
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set for the target platform selected by :variable:`CMAKE_OSX_SYSROOT`.
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For example, if the sysroot variable specifies an iOS SDK then the
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value in ``CMAKE_OSX_DEPLOYMENT_TARGET`` is interpreted as minimum
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iOS version.
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* The :generator:`Xcode` generator behavior of generating one project
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file per :command:`project()` command may now be controlled with the
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:variable:`CMAKE_XCODE_GENERATE_TOP_LEVEL_PROJECT_ONLY` variable.
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This could be useful to speed up the CMake generation step for
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large projects and to work-around a bug in the ``ZERO_CHECK`` logic.
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* Since the ``CMakeCache.txt`` format does not support newlines in values,
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values containing newlines are now truncated before writing to the file.
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In addition, a warning comment is written to the cache file, and a warning
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message is displayed to the user on the console.
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Updates
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=======
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Changes made since CMake 3.11.0 include the following.
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3.11.1
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------
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* The :module:`CheckIncludeFile` module ``check_include_file`` macro,
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:module:`CheckIncludeFileCXX` module ``check_include_file_cxx`` macro,
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and :module:`CheckIncludeFiles` module ``check_include_files`` macro
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were taught to honor the ``CMAKE_REQUIRED_LIBRARIES`` variable in
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CMake 3.11.0. This has been reverted due to changing behavior of
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checks for existing projects. It may be restored in the future
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with a policy for compatibility.
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3.11.2
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------
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* Calling :command:`add_library` to create an alias of an imported
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target that is not globally visible now causes an error again as
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it did prior to 3.11.0. This diagnostic was accidentally dropped
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from CMake 3.11.0 and 3.11.1 by the change to allow globally visible
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imported targets to be aliased.
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* The :module:`FindQt4` module ``qt4_wrap_cpp``, ``qt4_wrap_ui`` and
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``qt4_add_resources`` macros now set :prop_sf:`SKIP_AUTOMOC` and
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:prop_sf:`SKIP_AUTOUIC` on their generated files. These files never
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need to be processed by moc or uic, and we must say so explicitly to
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account for policy :policy:`CMP0071`.
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3.11.3
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------
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* CMake 3.11.0 introduced support for resolving symbolic links on
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Windows in code paths that typically do so on UNIX. This has been
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reverted due to breakage on ``subst`` drives.
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