From: | Bruce Momjian <bruce(at)momjian(dot)us> |
---|---|
To: | Greg Stark <gsstark(at)mit(dot)edu> |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Greg Smith <greg(at)2ndquadrant(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Robert Haas <robertmhaas(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Michael Banck <mbanck(at)debian(dot)org>, jd <jd(at)commandprompt(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Debian readline/libedit breakage |
Date: | 2011-02-17 03:15:02 |
Message-ID: | 201102170315.p1H3F2K06811@momjian.us |
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Lists: | pgsql-hackers |
Greg Stark wrote:
> On Thu, Feb 17, 2011 at 12:39 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> > In particular, getting rid of use of OpenSSL would not be sufficient
> > to satisfy the most rabid GPL partisans that we were in compliance.
>
> Huh?
>
> In what way would we not be in compliance? Or rather, what part of the
> GPL would we be unable to comply with for distributing binaries?
>
>
> I think what you're getting at is that distributing source which can
> optionally link against GPL code might itself be a derivative work of
> the GPL code and need to be distributed under the GPL even if it's not
> built against it. I think that's just a straw man though, even the
> most ardent GPL partisan isn't going to claim that the Postgres source
> is a derivative work of readline because it has the option to link
> against readline for additional incidental functionality.
>
> To give context the case where this comes up are things like Gimp
> plugins *which are useless with thout the GIMP*. They're entirely
> dependent on the Gimp for their functionality. Claiming they're
> derivative works of the Gimp is a lot easier than claiming that
> Postgres is a derivative work of readline. A more borderline case was
> programs based on GMP. However even there it's hard to picture a
> useful program which needs GMP being able to do anything useful
> without GMP. Even then just providing a (much poorer) alternative
> implementation makes the case fall apart.
You are right that our source code is not require the GPL because it can
use libreadline, but I am worried about people producing binaries that
do link (dynamically?) against libreadline, which is GPL.
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
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