From the link: > But if the module was written for other systems, and just ported to Linux, and not using our code, then it's very much debatable whether it's actually a "derived work". Interfaces don't make "derived works" per se.

Interesting, wonder where this puts Android's Dalvik VM (is the VM called this too? I don't remember). Edit: Not sure what the JVM Dalvik is based on is licensed as though.