Re: [Opensync-users] May I modify libwbxml-0.11.0 source code to make it compile, and use it in commercial software

[Zeng,Weiming <hi...@gm...>]

Hi Chris, thank you for your reply!

In this case, may I distribute my compiled libwbxml-0.11.0 DLL file along
with the proprietary email client? Or should I make it a separate package
to deliver?

- Weiming

On Mon, Nov 14, 2011 at 3:51 PM, Chris Frey <cd...@fo...> wrote:

> On Mon, Nov 14, 2011 at 03:20:56PM +0800, Zeng,Weiming wrote:
> > My question is related to LGPL licensing of libwbxml-0.11.0.
> >
> > I got the source of libwbxml-0.11.0 but found it won't compile on Windows
> > using Visual C++ 6 (missing wbxml_config.h). I'd like to modify the
> source
> > and make it compile, then use it in the commercial software in a
> > dynamic-link manner(DLL).  This proprietary is an email client with
> > ActiveSync capability.
> >
> > My concern is that as it's bounded by LGPL, may I keep the commercial
> > software code proprietary, while using a modified libwbxml-0.11.0 ?
>
> Yes, this is fine, since it is the LGPL involved, not the GPL.
>
> If you use libwbxml as a DLL only, then yes, I don't think there is
> any further burden on you.  As long as the end user has the ability to
> replace that DLL with a new one of the same API, and have your software
> work, that's fine.
>
> If you use libwbxml in a static manner (linking it into the end EXE),
> then you also need to provide the .obj files (not the source code) of
> your proprietary program, so that the end user can replace the libwbxml
> .obj file, and relink to create a new working EXE.
>
> The basic goal being to preserve the usefulness of the libwbxml source
> code in your final product, for your end uesr, so that he can modify it
> freely, regardless of what it is linked to.
>
> I'm not a lawyer, but I'm fairly sure about this. :-)  The FSF also has
> FAQ's that may be of use to you.
>
> Hope this helps,
> - Chris
>
>
>
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