CMAKE_PROJECT_INCLUDE_BEFORE

Added in version 3.15.

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

Added in version 3.29: This variable can be a semicolon-separated list of CMake language files to be included sequentially. It can also now refer to module names to be found in CMAKE_MODULE_PATH or as a builtin CMake module.

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