CMP0081 ------- Relative paths not allowed in :prop_tgt:`LINK_DIRECTORIES` target property. CMake 3.12 and lower allowed the :prop_dir:`LINK_DIRECTORIES` directory property to contain relative paths. The base path for such relative entries is not well defined. CMake 3.13 and later will issue a ``FATAL_ERROR`` if the :prop_tgt:`LINK_DIRECTORIES` target property (which is initialized by the :prop_dir:`LINK_DIRECTORIES` directory property) contains a relative path. The ``OLD`` behavior for this policy is not to warn about relative paths in the :prop_tgt:`LINK_DIRECTORIES` target property. The ``NEW`` behavior for this policy is to issue a ``FATAL_ERROR`` if :prop_tgt:`LINK_DIRECTORIES` contains a relative path. This policy was introduced in CMake version 3.13. CMake version |release| warns when the policy is not set and uses ``OLD`` behavior. Use the :command:`cmake_policy` command to set it to ``OLD`` or ``NEW`` explicitly. .. include:: DEPRECATED.txt