發現當使用 Ino 進行編譯時都會出現以下的編譯錯誤訊息：

$ ion build
...
Scanning dependencies of Robot_Control
src/sketch.cpp
Robot_Control/glcdfont.c
Robot_Control/utility/twi.c
Robot_Control/Adafruit_GFX.cpp
Robot_Control/Arduino_LCD.cpp
Robot_Control/ArduinoRobot.cpp
/Applications/Arduino.app/Contents/Resources/Java/libraries/Robot_Control/ArduinoRobot.cpp: In constructor 'RobotControl::RobotControl()':
/Applications/Arduino.app/Contents/Resources/Java/libraries/Robot_Control/ArduinoRobot.cpp:8: error: 'LCD_CS' was not declared in this scope
/Applications/Arduino.app/Contents/Resources/Java/libraries/Robot_Control/ArduinoRobot.cpp:8: error: 'DC_LCD' was not declared in this scope
/Applications/Arduino.app/Contents/Resources/Java/libraries/Robot_Control/ArduinoRobot.cpp:8: error: 'RST_LCD' was not declared in this scope
/Applications/Arduino.app/Contents/Resources/Java/libraries/Robot_Control/ArduinoRobot.cpp: In member function 'void RobotControl::begin()':
/Applications/Arduino.app/Contents/Resources/Java/libraries/Robot_Control/ArduinoRobot.cpp:18: error: 'MUXA' was not declared in this scope
/Applications/Arduino.app/Contents/Resources/Java/libraries/Robot_Control/ArduinoRobot.cpp:18: error: 'MUXB' was not declared in this scope
/Applications/Arduino.app/Contents/Resources/Java/libraries/Robot_Control/ArduinoRobot.cpp:18: error: 'MUXC' was not declared in this scope
/Applications/Arduino.app/Contents/Resources/Java/libraries/Robot_Control/ArduinoRobot.cpp:18: error: 'MUXD' was not declared in this scope
/Applications/Arduino.app/Contents/Resources/Java/libraries/Robot_Control/ArduinoRobot.cpp:19: error: 'MUX_IN' was not declared in this scope
/Applications/Arduino.app/Contents/Resources/Java/libraries/Robot_Control/ArduinoRobot.cpp:22: error: 'BUZZ' was not declared in this scope
/Applications/Arduino.app/Contents/Resources/Java/libraries/Robot_Control/ArduinoRobot.cpp:25: error: 'Serial1' was not declared in this scope
make: *** [.build/nano328/Robot_Control/ArduinoRobot.o] Error 1
Make failed with code 2

其實不太確定是什麼問題，目前也沒使用到該函式庫，我猜 Ino 可能會莫名跑去編譯沒用到的函式庫，然後 Arduino 官方提供的 Robot_Control 這個函式庫可能也有問題。

一個暫時的解決方法是，直接把該函式庫刪除即可！

$ rm -rf /Applications/Arduino.app/Contents/Resources/Java/libraries/Robot_Control

不過，因為其實還不太熟 Arduino，所以我決定暫時把它隱藏起來就是。

$ mv /Applications/Arduino.app/Contents/Resources/Java/libraries/Robot_Control /Applications/Arduino.app/Contents/Resources/Java/libraries/.Robot_Control

查了些資料，好像說其中有些程式碼有問題的樣子，所以如果有需要該函式庫的話，可以到以下的連結下載。

https://github.com/adafruit/Adafruit-GFX-Library

並將該函式庫放在 Arduino 預設工作目錄中的 libraries 目錄下，並取名為 Adafruit_GFX。