[License-discuss] Interfacing two incompatible licenses?

[John Whitmore]

On Thu, Mar 15, 2018 at 08:13:08PM +0000, Thorsten Glaser wrote:
> John Whitmore dixit:
> 
> >I have written a library of code for a few of Microchip's PIC
> >micro-controllers licensed under the LGPL. Microchip have libraries of
> >USB code, licensed under Apache 2.0, which I'd like to use in an
> >application. So I'd like my main.c file to be able to call one of my
> >functions and call one of Microchip's functions. (Actually more then
> >one but lets start small.)
> 
> In your specific case: the LGPL is rather lax when it comes to
> being combined; all you have to do is to provide everything ELSE
> from the program (your code, the Microchip libraries, etc.) in
> object form (*.o/*.obj, *.a/*.lib) so recipients can link them
> against a modified version of the LGPL library. The Apache 2
> licence also only applies to the direct work.
> 
> So, you can use any permissive licence for your main.c and even
> some copyleft-ish ones (details to be discussed).
> 
> In a more general case: if the work you create is a derivative
> work of the code under incompatible licences, you’re out of luck
> unless the licences themselves provide a way out (like the one
> above).
> 

Thanks so much for that response that's just the information I was looking for.