# CMAKE_PROJECT_INCLUDE_BEFORE

Added in version 3.15.

A CMake language file or module 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.

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