Ahh, that's a collision between two separate implementations. The cocos2d-x compilation errors are a known problem of cocos2d-x itself, which is no longer maintained. There's not a lot we can do about that I'm afraid, apart from forking their repository, fixing the errors, and pointing our users to our fork. We don't have the resources for that.
As for the compilation error due to SkeletonRenderer.h
I'll try to fix that asap.