CMD_DEPRECATED

.. versionadded:: 4.4

.. diagnostic:: :default: warn :parent: CMD_AUTHOR

Warn about use of a deprecated function or package. This is the category triggered by :command:message(DEPRECATION).

.. note::

If :policy:`CMP0218` is not set to ``NEW``, :command:`message(DEPRECATION)`
invocations, along with builtin deprecation messages that existed prior to
CMake 4.4, will ignore this diagnostic state and will instead use the
:variable:`CMAKE_WARN_DEPRECATED` and :variable:`CMAKE_ERROR_DEPRECATED`
variables to determine the severity of deprecation messages.