Seeed-Studio/Grove_LCD_RGB_Backlight — pull request #3 by PaulStoffregen (2013-11-16 18:21:39+00:00)
Title: Fix "undefined reference to vtable" on Teensy3 & Arduino Due

On 32 bit boards, like Arduino Due and Teensy 3.0, this library gives an error: undefined reference to `vtable for rgb_lcd'

The solution is very simple, just add an empty constructor.