CMAKE_PROJECT_TOP_LEVEL_INCLUDES

.. versionadded:: 3.24

:ref:Semicolon-separated list <CMake Language Lists> of CMake language files to include as part of the very first :command:project call. The files will be included immediately after the toolchain file has been read (if one is specified) and platform variables have been set, but before any languages have been enabled. Therefore, language-specific variables, including things like :variable:CMAKE_<LANG>_COMPILER, might not be set. See :ref:Code Injection for a more detailed discussion of files potentially included during a :command:project call.

.. versionadded:: 3.29 This variable can also now refer to module names to be found in :variable:CMAKE_MODULE_PATH or builtin to CMake.

This variable is intended for specifying files that perform one-time setup for the build. It provides an injection point for things like configuring package managers, adding logic the user shares between projects (e.g. defining their own custom build types), and so on. It is primarily for users to add things specific to their environment, but not for specifying the toolchain details (use :variable:CMAKE_TOOLCHAIN_FILE for that).

By default, this variable is empty. It is intended to be set by the user.