[asterisk-dev] Idea for GSoC: Support of PRACK in Asterisk

[Chris Tooley]

On Wed, Mar 25, 2009 at 3:05 PM, Kevin P. Fleming <kpfleming at digium.com> wrote:
> John Todd wrote:
>
>> Would incorporation of download/install of Sofia into the "make"
>> process be unwieldy?  I could see that potentially as a "make
>> menuselect" option that is selected by the administrator at the time
>> of compile.  Or as suggested, something similar to the get_ilbc script.
>
> I'm going to put on my "I am not a lawyer" hat for a moment, so please
> forgive me...
>
> There are really two core issues here: first, that 'inclusion' of the
> LGPL code into a combined work (at the source code level) carries some
> implications. With Asterisk OSS already being licensed under the GPLv2,
> these implications are pretty much moot, but for commercially licensed
> Asterisk, they are of concern.
>
> The second is that even distribution of a binary containing the LGPL
> code has implications; again, for OSS Asterisk these are pretty much
> moot (but not completely), but for commercially licensed Asterisk, they
> are a serious (and insurmountable) concern.
>
> Essentially, to take full advantage of the LGPL's provisions, the
> LGPL-licensed work must be kept as separate as possible from the work
> under a different license, and only connected at runtime via linking
> mechanisms.
>
> Before someone else posts it, yes, these concerns are being driven
> primarily by commercially licensed usage of Asterisk; if core
> functionality in Asterisk required use of an LGPL library (especially
> one that is not readily available as, or designed to be, a shared
> library) that could not be substituted one-for-one with a non-LGPL
> library, then our commercial licensees would have a problem.

Isn't this why we were looking at reSIProcate at the Asterisk
Developer Conference instead of sophia?