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From: Martijn van Oosterhout <kleptog(at)svana(dot)org>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Stephen Frost <sfrost(at)snowman(dot)net>, mark(at)mark(dot)mielke(dot)cc,"Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>,pgsql-hackers(at)postgresql(dot)org
Subject: Re: TODO: GNU TLS
Date: 2006-12-29 10:54:00
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
On Fri, Dec 29, 2006 at 12:08:37AM -0500, Tom Lane wrote:
> Stephen, let me explain *exactly* why I think this is horsepucky.
> libjpeg, my other major open-source project, has always been shipped
> under a BSD-ish license that includes an "advertising" clause; I quote:
> : (2) If only executable code is distributed, then the accompanying
> : documentation must state that "this software is based in part on the work of
> : the Independent JPEG Group".

That's not an advertising clause, that merely asks that it be mentioned
somewhere in the documentation, which is copied along with the rest of
the code, so that's not limiting the redisitribution of anything. It
also only applies when the source is not distributed, which means for
the GPL it's a total non-issue.

The OpenSSL licence on the other hand wants any advertising material
of any application mentioning the use of SSL to include the
acknowledgement. This would include flyers printed for a conference, or
the label of the CD that contains it.

Surely you can see the difference?

> Curiously, every single GPL-license web browser in the world uses
> libjpeg.  Until I see a widespread willingness to remove JPEG support in
> GPL-licensed software, and/or somebody providing a pure-GPL replacement
> for libjpeg, I am not going to take this argument seriously.  There is
> exactly zero meaningful difference between the libjpeg license terms and
> the OpenSSL terms, but where is the pushback on libjpeg?  I have not
> seen any, in all the years I worked on that project.

Because there is a very large, very meaningful difference.

Have a nice day,
Martijn van Oosterhout   <kleptog(at)svana(dot)org>
> From each according to his ability. To each according to his ability to litigate.

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