add_subdirectory_ifdef(CONFIG_LIB_FWU fwu)
add_subdirectory_ifdef(CONFIG_LIB_MODBUS_SERVER modbus_server)
add_subdirectory_ifdef(CONFIG_LIB_VALVE valve)
add_subdirectory_ifdef(CONFIG_SHELL_SYSTEM shell_system)
add_subdirectory_ifdef(CONFIG_SHELL_MODBUS shell_modbus)