On Thu, 11 Dec 2003, Hughes, Bill wrote:
> Sent: 11 December 2003 14:28 From: Igor Pechtchanski
> > Common sense dictates that socket connections cannot be thought of as
> > "linking" (which is what the GPL covers). After all, connecting with a
> > proprietary ssh client to a GPL'd ssh daemon on Linux doesn't make the
> > client GPL'd (AFAIK). Now, if your program is actually linked to some of
> > PostgreSQL DLLs, that's a whole different story...
>
> Isn't PostgreSQL under a BSD license anyway so that wouldn't be a worry
> either...
> unless this is a Cygwin dll for PostgreSQL?
With the disclaimer (which you snipped) that IANAL, and any opinion you'll
get is a personal one:
The GPL is viral, i.e., anything linked (even dynamically) to a GPL'd
library is itself GPL'd, *except* when the software so linked is
distributed under an open-source license. Transitive linking is still
linking, AFAIK. So, linking with cygwin1.dll doesn't make PostgreSQL
GPL'd, as BSD is an accepted open-source license. But any proprietary
software linked to PostgreSQL (and, transitively, to cygwin1.dll) *will*,
IMO, become GPL'd. Again, YANALATEYHSMBSI. Please consult a lawyer.
Igor
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