thank you so much @JMCC
Have been trying to get this to work for a few days. Now I have sgminer recognising OpenCL on my tinkerboard! (shame about lack of cryptonight support on ARM).
Running 16.04 xenial armbian build: Armbian_5.41_Tinkerboard_Ubuntu_xenial_default_4.4.119_desktop.7z
Just hope there's a currency this thing will still mine.
Once again, thank you for putting all the time into providing this tutorial for us. We'd never get there without people like you!!
Regards,
Aaron.