Re: transitive GPL (exim4, OpenSSL, mySQL and others)
On Fri, 09 Nov 2007 23:35:55 +0100, Josselin Mouette <joss@debian.org>
wrote:
>Le jeudi 08 novembre 2007 à 19:27 +0100, Marc Haber a écrit :
>> (1)
>> Is it ok to change exim's SSL library to OpenSSL in the current setup
>> without violating the GPL for some of the library currently in use
>
>It would be nice to get explicit permission from the Exim developers to
>link with Perl code under the Artistic license, but it seems to me that
>this whole mess is already legally redistributable.
I have filed an upstream bug
(http://bugs.exim.org/show_bug.cgi?id=629) asking for this permission.
>> (3)
>> Is this violation maybe already happening by virtue of linking
>> indirectly to OpenSSL via libpq?
>
>It would, if exim and libmysqlclient's exceptions weren't so broad.
Let me understand this in Theory. Given the following link tree:
-------------
| program P |
-------------
/ \
/ \
------------- -------------
| library L | | library M |
------------- -------------
|
-------------
| OpenSSL |
-------------
If both M and P were GPL with OpenSSL exception, but L were GPL
without OpenSSL exception, this linking would be a violation of L's
license?`By virtue of P linking to M and L and M linking to OpenSSL?
Greetings
Marc
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