下列哪些是CMake没有而Catkin有（Catkin扩展了）的指令

A.add_message_files()

B.add_service_files()

C.add_action_files()

D.generate_messages()

A.Ament

B.CMake

C.Catkin

D.rosbuild

A.Ament

B.CMake

C.Catkin

D.rosbuild

A.Ament

B.CMake

C.Catkin

D.rosbuild

A.include_directories()

B.include_directory()

C.cmake_include_path()

D.cmake_include_directory()

A.add_executable()

B.add_library()

C.add_link()

D.target_link_libraries()

A.减少指令字长度

B.增加指令字长度

C.保持指令字长度不变而增加指令的数量

D.保持指令字长度不变而增加寻址空间