CMAKE MACRO and function to include all directories recursively

CMakeLists.txt

# MACRO to add all directories in result
MACRO(SUBDIRLIST result firstdir curdir)
    file(GLOB ENDF6_SRC_TOP RELATIVE
        ${curdir} ${curdir}/*)
    file(GLOB_RECURSE ENDF6_SRC_NESTED ${curdir}/*)
    set(children ${ENDF6_SRC_TOP} ${ENDF6_SRC_NESTED})

    SET(dirlist "${firstdir}")
    FOREACH(child ${children})
        IF(IS_DIRECTORY ${curdir}/${child})
            LIST(APPEND dirlist ${curdir}/${child})
        ENDIF()
    ENDFOREACH()
    SET(${result} ${dirlist})
ENDMACRO()

function(include_all_files)
    #argv[0] - result variable, argv[1] - add relative paths, set "" if you don't want it
    #argv[2] - path to folder with folders
    SUBDIRLIST(SUBDIRS ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR})

    FOREACH(subdir ${SUBDIRS})
        include_directories(${subdir})
    ENDFOREACH()
endfunction()