APIs can't be copyrighted, at least in the US -- this is why projects like Wine are legal. Software which calls a GPL'd library's API is not considered a derivative work of the library. Otherwise, releasing X11/BSD/etc code which calls GPL libraries wouldn't be legal.
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APIs can't be copyrighted, at least in the US -- this is why projects like Wine are legal. Software which calls a GPL'd library's API is not considered a derivative work of the library. Otherwise, releasing X11/BSD/etc code which calls GPL libraries wouldn't be legal.