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diff --git a/share/cmake-3.17/Help/policy/CMP0022.rst b/share/cmake-3.17/Help/policy/CMP0022.rst new file mode 100644 index 0000000..be60e37 --- /dev/null +++ b/share/cmake-3.17/Help/policy/CMP0022.rst @@ -0,0 +1,39 @@ +CMP0022 +------- + +:prop_tgt:`INTERFACE_LINK_LIBRARIES` defines the link interface. + +CMake 2.8.11 constructed the 'link interface' of a target from +properties matching ``(IMPORTED_)?LINK_INTERFACE_LIBRARIES(_<CONFIG>)?``. +The modern way to specify config-sensitive content is to use generator +expressions and the ``IMPORTED_`` prefix makes uniform processing of the +link interface with generator expressions impossible. The +:prop_tgt:`INTERFACE_LINK_LIBRARIES` target property was introduced as a +replacement in CMake 2.8.12. This new property is named consistently +with the ``INTERFACE_COMPILE_DEFINITIONS``, ``INTERFACE_INCLUDE_DIRECTORIES`` +and ``INTERFACE_COMPILE_OPTIONS`` properties. For in-build targets, CMake +will use the INTERFACE_LINK_LIBRARIES property as the source of the +link interface only if policy ``CMP0022`` is ``NEW``. When exporting a target +which has this policy set to ``NEW``, only the :prop_tgt:`INTERFACE_LINK_LIBRARIES` +property will be processed and generated for the ``IMPORTED`` target by +default. A new option to the :command:`install(EXPORT)` and export commands +allows export of the old-style properties for compatibility with +downstream users of CMake versions older than 2.8.12. The +:command:`target_link_libraries` command will no longer populate the properties +matching ``LINK_INTERFACE_LIBRARIES(_<CONFIG>)?`` if this policy is ``NEW``. + +Warning-free future-compatible code which works with CMake 2.8.7 onwards +can be written by using the ``LINK_PRIVATE`` and ``LINK_PUBLIC`` keywords +of :command:`target_link_libraries`. + +The ``OLD`` behavior for this policy is to ignore the +:prop_tgt:`INTERFACE_LINK_LIBRARIES` property for in-build targets. +The ``NEW`` behavior for this policy is to use the ``INTERFACE_LINK_LIBRARIES`` +property for in-build targets, and ignore the old properties matching +``(IMPORTED_)?LINK_INTERFACE_LIBRARIES(_<CONFIG>)?``. + +This policy was introduced in CMake version 2.8.12. CMake version +|release| warns when the policy is not set and uses ``OLD`` behavior. Use +the :command:`cmake_policy` command to set it to ``OLD`` or ``NEW`` explicitly. + +.. include:: DEPRECATED.txt |