Re: dnsapi: Switch from libresolv to libbind for DNS support.

[Marcus Meissner]

On Sat, May 13, 2006 at 05:10:55PM +0200, Hans Leidekker wrote:
> This patch presents an alternative to the one I sent a while ago
> that adds two source files from libbind. The advantage of this
> alternative is that it brings DNS message parsing support and DNS
> update support, without adding files from external projects.
>
> The drawback is that libbind appears to be packaged only as a static
> library on Debian based systems, whereas libresolv is available as a
> shared library on virtually every system. libbind.a is 428694 bytes
> in size on my Kubuntu system and 546908 bytes in size on my Fedora
> system.
>
> -Hans
>
> Changelog
>   Switch from libresolv to libbind for DNS support.

The disadvantage is that bind-libs is under a BSD 4 clause license.

While it is allowed to link it, it will also make dnsapi and likely
WINE itself fall under the BSD 4 clause license (additionaly to LGPL)
and both need to be honored from this point on.

BSD 4 clause is only used in parts of the lib, other parts
are under regular BSD license or others.

grep -r "All advertising materials" <dir>
to find all files with BSD clause 4 license.

I think the DNS parsing code itself in libbind is under normal BSD
license and the pieces necessary could be copied/imported safely into
LGPL code.

(This is likely the reason Debian packs it statically.)

Ciao, Marcus

dnsapi: Switch from libresolv to libbind for DNS support.

[Hans Leidekker]

On Monday 15 May 2006 12:52, Marcus Meissner wrote:
> While it is allowed to link it, it will also make dnsapi and likely
> WINE itself fall under the BSD 4 clause license (additionaly to LGPL)
> and both need to be honored from this point on.

I guess this rules out linking to libbind.
> I think the DNS parsing code itself in libbind is under normal BSD
> license and the pieces necessary could be copied/imported safely into
> LGPL code.

Yes, and the update code is under normal BSD license too. So the option
left is to go back to using libresolv and import some 50 kilobytes of
parsing and update code under the BSD license.

 -Hans