Re: [eigen] Eigen and GPL

[Mark <mark.ortmann85@xxxxxxxxx>]

Hi,

thank you for your quick and helpful response.

Just for clarification:

I am working on a GPL 2 licensed software and may not modify the licence, yet we are not using any further GPL or secondary licensed software. Does that mean I am contravening against 3.3 in particular:


" The Larger Work must be "a combination of Covered Software with a work governed by one or more Secondary Licenses." So you can't just say "I really prefer (L)GPL" - you must have a need to combine with another, existing GPL work. (This is different from a traditional dual-license, which does not require you to combine, and instead allows you to simply say "I've decided to be GPL-only.")"


Thank you for your help

Mark

Am 30.06.2013 04:25, schrieb Gael Guennebaud:

There is practical guide there:

http://www.mozilla.org/MPL/2.0/combining-mpl-and-gpl.html

Since you're not going to modify Eigen's source code, you have nothing
special to do!

cheers,
gael

On Sat, Jun 29, 2013 at 10:37 AM, Mark <mark.ortmann85@xxxxxxxxx> wrote:

Hi everybody,

I have already read the thread "MPL2 is really compatible with GPL/LGPL",
yet I am still unsure about how to proceed.

I want to use Eigen (and only Eigen) within a GPL 2 licensed software, which
has been available for a long time and we cannot change the license (or
"extend" it).

According to http://www.mozilla.org/MPL/2.0/FAQ.html Q14 requirement 1 is
met by Eigen. However, we are not yet using any other GPL licensed third
party library, therefore I am not sure if we fulfill requirement 2.

My questions are:

1. Can I combine Eigen within my GPL 2 software?
2. Do I have to change/modify my license?
3. How do I meet requirement 3 of Q 14 (MPL/FAQ)?
4. Do I have to add a license file (as in Eigen COPYING.*)?

Please note I am not intending to modify any of the Eigen source code and
would really love to use this library within my software.

Thanks for your help,
Mark