Dear Richard,
Thank you for your reply. And your advise is very
helpful to us, we will engage the assistance of a
patent/copyright lawer to get more information for the
license.
But we still want to make sure one thing.
Does it mean if we start working, we are not
concerned about the software which is additional
actions required for DFB requirement? So it maybe hard
to express, but it is first time for us to build so
big project. We don't want to make a mistake at
license, it will cause more trouble for our
organization.
For example: if we want want use A, the B is the
requirement of A, and the C is requirement of B.
When we get the license of A & B, should we get the
license of C?
Maybe the is quesiton is not suit DFB, But your
advise will help for our work.
Thanx again.
Best regards
Zhan Zhaohua
2005.11.8
--- Unger Richard <[EMAIL PROTECTED]> wrote:
> Hi!
>
> The way I see it, you're ok for using DFB:
>
> Freetype is provided under the 'Freetype' License, a
> BSD style license:
> http://www.freetype.org/license.html
> This means you can use the software in any way you
> want without paying, but have to mention freetype in
> the 'credits' for your software.
>
> LibJPEG62 is a little more complicated, but
> according to their own copyright notice you should
> be fine using their software provided you also
> 'credit' its use.
>
http://packages.debian.org/changelogs/pool/main/libj/libjpeg6b/libjpeg6b_6b-10/copyright
>
> Libpng3 and Zlib have very similar licenses, both of
> which allow you to use the software any way you want
> at no charge. They do not even require you to
> 'credit' the use of the software, although it would
> be appreciated.
> http://www.libpng.org/pub/png/src/libpng-LICENSE.txt
> http://www.zlib.net/zlib_license.html
>
> Providing 'credit' or acknowledgement means that you
> mention that you used the software, and refer to the
> authors and perhaps the home page of the software in
> your Product Manual, the 'About' or 'Info'
> page/screen of the Product and your Product Website.
>
> DirectFB itself is LGPL. This means you can use
> DirectFB and the software it depends on as libraries
> against which you can link your software for your
> product. You do not need to publish the source code
> for your software, and can include the libraries in
> compiled form together with your product.
> -> Basically you have exactly what you need!
>
> In theory, there are no additional actions required
> for the licenses, there is no one that you have to
> apply with or ask to send you the license. You can
> just start working.
>
> Depending on your companys 'confidence' in this
> situation I think there are a couple of ways to
> proceed:
>
> 1) You could simply archive (copy) all license and
> copyright documents included with the software (make
> hard copies, consider having them certified by a
> notary to guarantee originality) and then begin
> work.
>
> 2) If you are less confident, you could write to the
> principal authors of the different software
> packages, and ask them to send you written
> confirmation that you can use the software in your
> commercial product free of charge. Add their written
> statements to the other copyright materials you
> archive.
>
> 3) You could engage the assistance of a
> patent/copyright lawer to handle this process for
> you, and provide your company with a statement
> indicating the 'compliance' to the various copyright
> licenses.
>
>
> Hope this helps,
>
> Richard Unger
>
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> directfb-dev@directfb.org
>
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