Ow dotty got plenty of information ? do you to ? guess not
you say that the android sdk of a64 and H5 are the same
and that the difference is only in the lichee directory.
think that you better can read some more of how alwinner is build up
did you manage to build the image from the orangepi sdk as a start
guess what found a android H5 sdk wich compiles do you ?
did you try to diff a a64 sdk source with a h5 sdk source ?
did you find wich android version is used as sdk ?