Hello @pako, with "sudo CFLAGS="-fcommon" python3 setup.py install --force-h6" it did compile, thanks fo the help!
However, I am now stuck in a new problem, and I do not know if you can help? I can not find the BCM GPIO pinout mappings for Orangepi 3 anywhere. Do you know where to find a mapping of Board-BCM-GPIO numbers?