They have a porting guide here: https://developer.ubuntu.com/en/phone/devices/porting-new-device/ https://developer.ubuntu.com/en/phone/devices/porting-new-de.

They have a porting guide here: https://developer.ubuntu.com/en/phone/devices/porting-new-device/ https://developer.ubuntu.com/en/phone/devices/porting-new-de... Cross-compilers have been available for a while now.