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