"I've talked with our lawyer about one specific issue that you raised: that of using simple material from header files.
Someone recently made the claim that including a header file always makes a derivative work.
That's not the FSF's view. Our view is that just using structure definitions, typedefs, enumeration constants, macros with simple bodies, etc., is NOT enough to make a derivative work. It would take a substantial amount of code (coming from inline functions or macros with substantial bodies) to do that.
This should help end the recent FUD about the Android "clean headers"."