cmake/Help/variable/CMAKE_PROJECT_PROJECT-NAME_INCLUDE_BEFORE.rst

CMAKE_PROJECT_<PROJECT-NAME>_INCLUDE_BEFORE
-------------------------------------------

.. versionadded:: 3.17

A CMake language file to be included as the first step of any
:command:`project` command calls that specify ``<PROJECT-NAME>`` as the project
name.  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_INCLUDE`, :variable:`CMAKE_PROJECT_INCLUDE_BEFORE`,
and :variable:`CMAKE_PROJECT_TOP_LEVEL_INCLUDES` variables.