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CMP0037
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-------
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Target names should not be reserved and should match a validity pattern.
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CMake 2.8.12 and lower allowed creating targets using :command:`add_library`,
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:command:`add_executable` and :command:`add_custom_target` with unrestricted
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choice for the target name. Newer cmake features such
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as :manual:`cmake-generator-expressions(7)` and some
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diagnostics expect target names to match a restricted pattern.
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Target names may contain upper and lower case letters, numbers, the underscore
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character (``_``), dot(``.``), plus(``+``) and minus(``-``).
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As a special case, ``ALIAS`` and ``IMPORTED`` targets may contain
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two consecutive colons.
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Target names reserved by one or more CMake generators are not allowed.
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Among others these include ``all``, ``clean``, ``help``, and ``install``.
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Target names associated with optional features, such as ``test`` and
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``package``, may also be reserved. CMake 3.10 and below always reserve them.
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CMake 3.11 and above reserve them only when the corresponding feature is
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enabled (e.g. by including the :module:`CTest` or :module:`CPack` modules).
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The ``OLD`` behavior for this policy is to allow creating targets with
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reserved names or which do not match the validity pattern.
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The ``NEW`` behavior for this policy is to report an error
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if an add_* command is used with an invalid target name.
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.. |INTRODUCED_IN_CMAKE_VERSION| replace:: 3.0
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.. |WARNS_OR_DOES_NOT_WARN| replace:: warns
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.. include:: STANDARD_ADVICE.txt
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.. include:: DEPRECATED.txt
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