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24 lines
909 B
24 lines
909 B
CMP0085
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-------
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.. versionadded:: 3.14
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``$<IN_LIST:...>`` handles empty list items.
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In CMake 3.13 and lower, the ``$<IN_LIST:...>`` generator expression always
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returned ``0`` if the first argument was empty, even if the list contained an
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empty item. This behavior is inconsistent with the ``IN_LIST`` behavior of
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:command:`if`, which this generator expression is meant to emulate. CMake 3.14
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and later handles this case correctly.
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The ``OLD`` behavior of this policy is for ``$<IN_LIST:...>`` to always return
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``0`` if the first argument is empty. The ``NEW`` behavior is to return ``1``
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if the first argument is empty and the list contains an empty item.
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This policy was introduced in CMake version 3.14. CMake version
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|release| warns when the policy is not set and uses ``OLD`` behavior.
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Use the :command:`cmake_policy` command to set it to ``OLD`` or ``NEW``
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explicitly.
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.. include:: DEPRECATED.txt
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