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25 lines
1.1 KiB
25 lines
1.1 KiB
CMAKE_POLICY_DEFAULT_CMP<NNNN>
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------------------------------
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Default for CMake Policy ``CMP<NNNN>`` when it is otherwise left unset.
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Commands :command:`cmake_minimum_required(VERSION)` and
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:command:`cmake_policy(VERSION)` by default leave policies introduced after
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the given version unset. Set ``CMAKE_POLICY_DEFAULT_CMP<NNNN>`` to ``OLD``
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or ``NEW`` to specify the default for policy ``CMP<NNNN>``, where ``<NNNN>``
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is the policy number.
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This variable should not be set by a project in CMake code as a way to
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set its own policies; use :command:`cmake_policy(SET)` instead. This
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variable is meant to externally set policies for which a project has
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not itself been updated:
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* Users running CMake may set this variable in the cache
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(e.g. ``-DCMAKE_POLICY_DEFAULT_CMP<NNNN>=<OLD|NEW>``). Set it to ``OLD``
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to quiet a policy warning while using old behavior or to ``NEW`` to
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try building the project with new behavior.
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* Projects may set this variable before a call to :command:`add_subdirectory`
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that adds a third-party project in order to set its policies without
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modifying third-party code.
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