Hi Leandro, thanks for your response and especially for the link you posted. :-) Leandro Doctors schrieb:
...But you can mix code licensed under the ASLv2 with code licensed under the GPLv3[0]. (In fact, AFAIC, to improve license compatibility -in this case, with the ASLv2- was one of the objectives of the GPLv3.)
I've read about this as well. Unfortunately, AFAIC, I cannot re-license code licensed under the GPLv2 (without automatic upgrade notice) to GPLv3 if I am not the copyright owner (which I am not).
Florian