macro(CMAKE_DIRECTORIES return_list)
  file(GLOB_RECURSE new_list CMakeLists.txt)
  set(dir_list "")
  foreach(file_path ${new_list})
    get_filename_component(dir_path ${file_path} PATH)
    set(dir_list ${dir_list} ${dir_path})
  endforeach()
  list(REMOVE_DUPLICATES dir_list)
  list(REMOVE_ITEM dir_list ${CMAKE_CURRENT_SOURCE_DIR})
  set(${return_list} ${dir_list})
endmacro()

cmake_directories(SUBDIRS)
message(STATUS "Adding Common header (*.h, *.hpp) include directories:")

foreach(subdir ${SUBDIRS})
  message(STATUS "   " ${subdir})
  add_subdirectory(${subdir})
  include_directories(${subdir})
endforeach()

set(GLOBAL_HEADERS ${GLOBAL_HEADERS} PARENT_SCOPE)