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From: Mu Li <muli.cmu@gmail.com>
Date: Thu, 6 Jul 2017 12:09:13 -0700
Message-ID: <CAAjLvtmFLTCmFBGZ2M1E4bNJ45OQa0xMtxv7OWYxFo-W3oQaCA@mail.gmail.com>
Subject: Re: ZeroMQ licensing in Apache MXNet
To: dev@mxnet.incubator.apache.org
Cc: general@incubator.apache.org
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archived-at: Thu, 06 Jul 2017 19:09:18 -0000

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It's optional for MXNet to use ZeroMQ. Even if it is enabled, the source
codes of MXNet will not contain any codes from ZeroMQ except for
"include<zmq.h>" and calling zeromq's APIs. But if we want to ship the
binary, it will link against libzeromq.a

On Thu, Jul 6, 2017 at 9:21 AM, John D. Ament <johndament@apache.org> wrote:

> Hen,
>
> Can you give some more info about how MXnet uses ZeroMQ?  Is it an optional
> dependency or required?  Are you actually bundling ZeroMQ in your release
> (source or binary)?
>
> John
>
> On Thu, Jul 6, 2017 at 2:23 AM Henri Yandell <bayard@apache.org> wrote:
>
> > One of the items that is on the list to do before releasing Apache MXNet
> is
> > removing ZeroMQ from the codebase/dependencies.
> >
> > ZeroMQ is licensed under the LGPL 3.0 with an exception for static
> > compiling.
> >
> > They have long been interested in relicensing to MPL 2.0, but haven't
> made
> > much progress, though they did relicense JeroMQ (Java
> > wrapper/implementaiton) last year.
> >
> > In the last few months they've made a lot of progress towards
> relicensing:
> > https://github.com/zeromq/libzmq/tree/master/RELICENSE
> >
> > I'd like to ask on legal-discuss@ for an exception (one year?) to
> continue
> > using ZeroMQ, with prominent documentation, in MXNet given the trend
> > towards MPL 2.0.
> >
> > Any concerns before I do so?
> >
> > Thanks,
> >
> > Hen
> >
>

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