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|
CMake 3.3 Release Notes
***********************
.. only:: html
.. contents::
Changes made since CMake 3.2 include the following.
New Features
============
Generators
----------
* The :ref:`Makefile Generators` now add ``.DELETE_ON_ERROR`` to the
makefiles that contain the actual build rules for files on disk.
This tells GNU make to remove rule outputs when their recipe
modifies an output but fails.
* The :ref:`Visual Studio Generators` learned to support ``.xaml``
source files and automatically associate them with corresponding
``.h`` and ``.cpp`` sources.
* A new experimental :generator:`Green Hills MULTI` generator was
added on Windows. `Green Hills MULTI`_ is an IDE for embedded
real-time systems.
.. _`Green Hills MULTI`: http://www.ghs.com/products/MULTI_IDE.html
Commands
--------
* The :command:`add_dependencies` command learned to allow dependencies
to be added to :ref:`interface libraries <Interface Libraries>`.
Dependencies added to an interface library are followed transitively
in its place since the target itself does not build.
* The :command:`execute_process` command learned to support specifying
the same file for ``OUTPUT_FILE`` and ``ERROR_FILE``.
* The :command:`file(GLOB)` and :command:`file(GLOB_RECURSE)` commands
learned a new ``LIST_DIRECTORIES <bool>`` option to specify whether
the glob result should include directories.
* The :command:`find_library`, :command:`find_path`, and :command:`find_file`
commands now search in installation prefixes derived from the ``PATH``
environment variable.
* The :command:`if` command learned a new ``IN_LIST`` operator that
evaluates to true if a given element is contained in a named list.
* The :command:`install(EXPORT)` and :command:`export()` commands
learned to export targets that populate the :prop_tgt:`INTERFACE_SOURCES`
target property.
* The :command:`install(TARGETS)` command learned to support
generator expressions in the ``DESTINATION`` value.
Variables
---------
* The version of some Fortran compilers is now detected and stored in the
:variable:`CMAKE_Fortran_COMPILER_VERSION <CMAKE_<LANG>_COMPILER_VERSION>`
variable.
* The :ref:`Visual Studio Generators` learned a new
:variable:`CMAKE_VS_INCLUDE_INSTALL_TO_DEFAULT_BUILD` option
to put the ``INSTALL`` target in the default build of a
solution (``.sln``) file.
Properties
----------
* A :prop_tgt:`CROSSCOMPILING_EMULATOR` target property and supporting
:variable:`CMAKE_CROSSCOMPILING_EMULATOR` variable were introduced
to allow target platform binaries to run on the host during cross
compiling.
* A :prop_tgt:`<LANG>_INCLUDE_WHAT_YOU_USE` target property and supporting
:variable:`CMAKE_<LANG>_INCLUDE_WHAT_YOU_USE` variable were introduced
to tell the :ref:`Makefile Generators` and the :generator:`Ninja` generator
to run ``include-what-you-use`` along with the compiler for ``C`` and
``CXX`` languages.
* The :prop_tgt:`<LANG>_VISIBILITY_PRESET` and
:prop_tgt:`VISIBILITY_INLINES_HIDDEN` target properties now
affect compilation in sources of all target types. See
policy :policy:`CMP0063`.
* The :prop_tgt:`XCODE_ATTRIBUTE_<an-attribute>` target property learned
to support generator expressions.
Modules
-------
* The :module:`CheckFortranCompilerFlag` module was introduced
to check ``Fortran`` compiler flags, much like the
:module:`CheckCCompilerFlag` module already does for ``C``.
* The :module:`ExternalData` module learned a new
:variable:`ExternalData_NO_SYMLINKS` option to disable use of
symbolic links to populate the real data files and use copies
instead.
* The :module:`ExternalData` module learned a new ``RECURSE:``
option in ``DATA{}`` references specifying directories.
This allows an entire directory tree of associated files
to be matched.
* The :module:`ExternalData` module learned a new URL template
placeholder ``%(algo:<key>)`` to allow custom mapping from
algorithm name to URL component through configuration of new
:variable:`ExternalData_URL_ALGO_<algo>_<key>` variables.
This allows more flexibility in remote URLs.
* The :module:`ExternalProject` module learned to replace tokens
like ``<BINARY_DIR>`` in the ``BYPRODUCTS`` of each step.
* The :module:`ExternalProject` module APIs learned to support
:manual:`generator expressions <cmake-generator-expressions(7)>`
when using ``LOG_*`` options and in CMake initial cache options.
* The :module:`FindBoost` module now tracks the directories containing
libraries separately for RELEASE and DEBUG configurations.
* The :module:`FindCUDA` module now defaults to using the static
CUDA runtime library if it is available. A new
``CUDA_USE_STATIC_CUDA_RUNTIME`` option is offered to control
this behavior.
* The :module:`FindMatlab` module was completely rewritten. It learned
about versions and components and to find Matlab in a more precise and
multiplatform way. The module now offers APIs to create mex extensions,
documentation, and unit tests.
* The :module:`FindPackageHandleStandardArgs` module
``FIND_PACKAGE_HANDLE_STANDARD_ARGS`` function now
always populates both the ``<PackageName>_FOUND``
and ``<UPPERCASE_NAME>_FOUND`` variables (the latter
for backwards compatibility). The ``FOUND_VAR``
option is now ignored except to enforce its allowed
values.
* The :module:`InstallRequiredSystemLibraries` module learned a new
``CMAKE_INSTALL_SYSTEM_RUNTIME_COMPONENT`` option to specify the
installation component.
Generator Expressions
---------------------
* A new ``COMPILE_LANGUAGE`` generator expression was introduced to
allow specification of compile options for target files based on the
:prop_sf:`LANGUAGE` of each source file. Due to limitations of the
underlying native build tools, this feature has varying support across
generators. See the :manual:`cmake-generator-expressions(7)` manual
for details.
CTest
-----
* The :manual:`ctest(1)` tool learned a new ``--repeat-until-fail <n>``
option to help find sporadic test failures.
* The :module:`CTestCoverageCollectGCOV` module learned to support
the same ``CTEST_CUSTOM_COVERAGE_EXCLUDE`` option as the
:command:`ctest_coverage` command.
CPack
-----
* The :cpack_gen:`CPack IFW Generator` learned to support
Qt Framework Installer 2.0 tools.
* The :cpack_gen:`CPack DEB Generator` learned a new
:variable:`CPACK_DEBIAN_<COMPONENT>_PACKAGE_SHLIBDEPS`
variable to specify per-component use of ``dpkg-shlibdeps``.
* The :cpack_gen:`CPack DEB Generator` learned a new
:variable:`CPACK_DEBIAN_<COMPONENT>_PACKAGE_DEPENDS`
option to specify per-component dependencies.
* The :cpack_gen:`CPack RPM Generator` learned to package symbolic links
more cleanly and now supports directory symlinks with recent
``rpmbuild`` versions.
* The :cpack_gen:`CPack RPM Generator` learned a new
:variable:`CPACK_RPM_ADDITIONAL_MAN_DIRS` variable to specify
directories containing man pages for the brp-compress RPM macro.
* The :cpack_gen:`CPack RPM Generator` learned a new
:variable:`CPACK_RPM_<component>_PACKAGE_ARCHITECTURE` variable
to specify a component-specific package architecture.
* The CPack WIX generator learned the new
:prop_inst:`CPACK_START_MENU_SHORTCUTS`,
:prop_inst:`CPACK_DESKTOP_SHORTCUTS` and
:prop_inst:`CPACK_STARTUP_SHORTCUTS` installed file properties which can
be used to install shortcuts in the Start Menu, on the Desktop and
in the Startup Folder respectively.
Other
-----
* The :manual:`Compile Features <cmake-compile-features(7)>` functionality
is now aware of features supported by GNU compilers on Windows, versions
4.4 through 5.0.
* The :manual:`cmake(1)` ``-E tar`` command learned a new
``--format<format>`` option to specify the archive format to
be written.
* On OS X, CMake learned to create XCTest bundles to test Frameworks
and App Bundles within Xcode. The :module:`FindXCTest` module
provides convenience functions to handle :prop_tgt:`XCTEST` bundles.
Deprecated and Removed Features
===============================
* On OS X the :manual:`cmake-gui(1)` no longer has the
``Install For Command Line Use`` menu item. Instead there
is a ``How to Install For Command Line Use`` menu item
that shows an informational dialog box explaining how to
make the command line tools available. For example::
/Applications/CMake.app/Contents/bin/cmake-gui --install
* The :command:`ctest_build` and :command:`build_command` commands
no longer tell ``make`` tools to ignore errors with the ``-i`` option.
Previously this was done for :ref:`Makefile Generators` but not others.
See policy :policy:`CMP0061`.
* The :generator:`Visual Studio 10 2010` generator no longer checks
for running VS IDEs with the project open or asks them to reload.
This was originally done for VS 10 because it had been done for
VS 7 through 9 to avoid prompting for every project in a solution.
Since VS >= 10 allow the whole solution to reload at once they
do not need CMake to help them.
* The :generator:`Visual Studio 7` generator (.NET 2002) is now
deprecated and will be removed in a future version of CMake.
* The :generator:`Visual Studio 6` generator is now deprecated
and will be removed in a future version of CMake.
* The :command:`find_package` command no longer considers project
build trees recently configured in a :manual:`cmake-gui(1)`.
This was previously done only on Windows and is now never done.
The ``NO_CMAKE_BUILDS_PATH`` option is now ignored if given
and effectively always on.
Projects may populate the :ref:`User Package Registry` to aid
users building multiple dependent projects one after another.
* The :command:`add_definitions()` command no longer causes a
:prop_dir:`DEFINITIONS` directory property to be populated. See policy
:policy:`CMP0059`.
* With Visual Studio 7, 8, and 9 generators the value of the ``$(OutDir)``
placeholder no longer evaluates to the configuration name. Projects
should use ``$(ConfigurationName)`` for that instead.
* Using the output of :command:`export()` with the :command:`install(FILES)`
command is no longer allowed. See policy :policy:`CMP0062` for details.
Other Changes
=============
* The :generator:`Ninja` generator now requires that calls to the
:command:`add_custom_command` and :command:`add_custom_target`
commands use the ``BYPRODUCTS`` option to explicitly specify any
files generated by the custom commands that are not listed as
outputs (perhaps because their timestamps are allowed to be older
than the inputs). See policy :policy:`CMP0058`.
* Build-time progress output of :ref:`Makefile Generators` has been improved.
It no longer mixes progress and build rule messages during parallel builds.
The link rule messages now have progress and are displayed as bold green
instead of bold red (since red is often associated with an error message).
* The :variable:`CMAKE_CFG_INTDIR` variable value for Visual Studio
7, 8, and 9 is now ``$(ConfigurationName)`` instead of ``$(OutDir)``.
This should have no effect on the intended use cases of the variable.
* Linking to library files by a full path in an implicit linker search
directory (e.g. ``/usr/lib/libfoo.a``) no longer asks the linker to
search for the library (e.g. ``-lfoo``) and now links by full path.
See policy :policy:`CMP0060`.
|
