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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(-). As a special case, ALIAS
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targets and IMPORTED targets may contain 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 "package",
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may also be reserved. CMake 3.10 and below always reserve them. CMake 3.11
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and above reserve them only when the corresponding feature is enabled
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(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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This policy was introduced in CMake version 3.0. 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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.. include:: DEPRECATED.txt
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