CMAKE_PROJECT_INCLUDE_BEFORE

.. versionadded:: 3.15

A CMake language file to be included as the first step of all :command:project command calls. This is intended for injecting custom code into project builds without modifying their source. See :ref:Code Injection for a more detailed discussion of files potentially included during a :command:project call.

.. versionadded:: 3.29 This variable can be a :ref:semicolon-separated list <CMake Language Lists> of CMake language files to be included sequentially. It can also now refer to module names to be found in :variable:CMAKE_MODULE_PATH or as a builtin CMake module.

See also the :variable:CMAKE_PROJECT_<PROJECT-NAME>_INCLUDE, :variable:CMAKE_PROJECT_<PROJECT-NAME>_INCLUDE_BEFORE, :variable:CMAKE_PROJECT_INCLUDE, and :variable:CMAKE_PROJECT_TOP_LEVEL_INCLUDES variables.