"He seems to be effectively saying "license the whole thing as GPL" or otherwise you can't use my contributions." I think this is what he is saying, and agree t

"He seems to be effectively saying "license the whole thing as GPL" or otherwise you can't use my contributions." I think this is what he is saying, and agree that this is reasonable to do :) "He may instead be trying to get them to release the original code as GPL, which is probably not needed to comply with the GPL in this case." It's a bit of a grey area, depending on how it's linked, used, etc.