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35 lines
1.4 KiB
35 lines
1.4 KiB
CMP0000
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-------
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A minimum required CMake version must be specified.
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CMake requires that projects specify the version of CMake to which
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they have been written. This policy has been put in place so users
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trying to build the project may be told when they need to update their
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CMake. Specifying a version also helps the project build with CMake
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versions newer than that specified. Use the :command:`cmake_minimum_required`
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command at the top of your main ``CMakeLists.txt`` file:
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::
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cmake_minimum_required(VERSION <major>.<minor>)
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where ``<major>.<minor>`` is the version of CMake you want to support
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(such as ``3.14``). The command will ensure that at least the given
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version of CMake is running and help newer versions be compatible with
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the project. See documentation of :command:`cmake_minimum_required` for
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details.
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Note that the command invocation must appear in the ``CMakeLists.txt``
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file itself; a call in an included file is not sufficient. However,
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the :command:`cmake_policy` command may be called to set policy ``CMP0000``
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to ``OLD`` or ``NEW`` behavior explicitly. The ``OLD`` behavior is to
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silently ignore the missing invocation. The ``NEW`` behavior is to issue
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an error instead of a warning. An included file may set ``CMP0000``
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explicitly to affect how this policy is enforced for the main
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``CMakeLists.txt`` file.
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This policy was introduced in CMake version 2.6.0.
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.. include:: DEPRECATED.txt
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