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