i2c_smbus_write_byte_data was not declared
Ubuntu上編譯I2C相關程式時，跳出錯誤 i2c_smbus_write_byte_data was not declared
Remote debugging on the Raspberry PI from Qt
DEBUG啟動時的錯誤訊息：the selected build of gdb does not support python scripting
GOOGLE找到替代的gdb-multiarch。
Guide - cross-compile Qt for Raspberry Pi 3
Cross-compile Qt-Rpi3 教學
Qt ver. 5.10.1
Raspbian 2018-04-18-Stretch
Ubuntu ver. 16.04