[geofft]

I think you want GPL + classpath exception:

Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination.

As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

There's no distinction about static vs. dynamic linking, and no specific requirement like the LGPL to be able to relink the application (though the GPL's general requirement to produce useful source + build scripts for the library still applies).

[mystikal]

I'm also fine if you pull out bits of my code and use them in your codebase, just as long as you release the changes to those bits. Probably function-level granularity for separating mine from yours would work, and I don't expect you to write wrappers. Also automatically doing stuff with my code is fine.

[geofft]

I'd expect that counts as modifying your library (to remove all but the lines of code I want to use), at which point I can avail myself of the classpath exception by being GPL-compliant for just those lines of code -- offering the complete corresponding source in the preferred form of modification.

[mystikal]

I think you still have to ship it in a separate tree / binary, but I'm not sure. I don't think the exception means you can put my GPL function in your proprietary code and call it as long as you reveal the changes to my function. But I'm willing to settle for "who knows, really" :)

I worked a bit on Classpath but that was a long time ago. There are like, lots and lots of emails + irc logs to dig up about that little exception and what it means. Not having things tested in court is a problem, and the lack of funding for FSF lawyers is another.