Re: GPL-only symbols issue

[Sam Ravnborg <sam@ravnborg.org>]

On Mon, May 08, 2006 at 09:25:00PM -0700, Greg KH wrote:
> On Mon, May 08, 2006 at 09:12:15AM +0200, Jan Beulich wrote:
> > Sam,
> > 
> > would it seem reasonable a request to detect imports of GPL-only
> > symbols by non-GPL modules also at build time rather than only at run
> > time, and at least warn about such?
> 
> Ram has some tools that might catch this kind of thing.  He's posted his
> scripts to lkml in the past, try looking in the archives.

Responding to an old post here.

I have only recently integrated Ram's patches except for the kbuild
integration bits. On top of this Andreas' license compatibility thing so
in effect:
building a GPL module (or compatible) => no change
building a GPL-incompatible module =>
                           warn if module uses EXPORT_SYMBOL_GPL_FUTURE
                           error out if module uses EXPORT_SYMBOL_GPL

Patches are in kbuild.git.
The script to show module export statistics is not yet merged, I've
asked Ram to fix a few things first.

	Sam