CMake/Help/release/3.7.rst

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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 <HTTP-header>`` and ``USERPWD <username>:<password>`` 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_<LANG>_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 <CMAKE_TOOLCHAIN_FILE>` may now set a
:variable:`CMAKE_<LANG>_FLAGS_INIT` variable to initialize the
:variable:`CMAKE_<LANG>_FLAGS` cache entry the first time a language is
enabled in a build tree.
* :variable:`Toolchain files <CMAKE_TOOLCHAIN_FILE>` 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 ``productbuild`` generator on OS X, configured by
the :module:`CPackProductBuild` module.
* CPack gained a new :variable:`CPACK_PACKAGE_CHECKSUM` variable to
enable generation of a checksum file for each package file.
* The :module:`CPackDeb` module 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 additonal pages to the IFW
installer.
* The :module:`CPackRPM` module learned to generate debuginfo
packages on demand. See :variable:`CPACK_RPM_DEBUGINFO_PACKAGE`
and its per component version.
* The :module:`CPackRPM` module 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 NSIS generator now supports
:variable:`CPACK_NSIS_<compName>_INSTALL_DIRECTORY`.
This can be used to set component specific installation directories.
* The 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 WIX generator now supports
:variable:`CPACK_COMPONENT_<compName>_DISABLED`.
This can be used to deselect a component from being installed by default.
* The CPack WIX generator now supports :variable:`CPACK_WIX_PATCH_FILE`
fragments for Feature elements.
* The 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=<file>`` 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