Tests/RunCMake/MaxRecursionDepth/include_recursive.cmake - third_party/github.com/Kitware/CMake - Git at Google

 message("${x}")
 math(EXPR x "${x} + 1")
 include("${CMAKE_CURRENT_LIST_FILE}")
	message("${x}")
	math(EXPR x "${x} + 1")
	include("${CMAKE_CURRENT_LIST_FILE}")