Re: Some Question about License
- From: Hongli Lai <hongli plan99 net>
- To: Zhan Zhaohua <webpurchasing yahoo com>
- Cc: gtk-devel-list gnome org, gtk-list gnome org
- Subject: Re: Some Question about License
- Date: Mon, 07 Nov 2005 09:21:40 +0100
Zhan Zhaohua wrote:
Dear:
Our organization is planning a big project which
is a Linux-Embedded system and will be sold as
products in the market.
Through our investigation, We want to use Gtk+ at
our system. But when we investigate the license of
gtk+ we met some trouble.
We know the when we compiling the GTK+, we need
those sofeware which record at
"http://www.gtk.org/api/2.6/gtk/gtk-building.html"
They are:
1. pkg-config
2. TIFF
3. Libpng
4. JPEG
5. cairo
6. FreeType
7. libiconv
8. gettext
9. Glib
10. Pango
11. ATK
So which is necessary for the Gtk usage?
pkg-config is only required for building GTK (and dependencies) from
source. Cairo is only required for GTK 2.8 - you can use earlier
versions of GTK if you don't want Cairo.
Glib (utility library), ATK (accessibility) and Pango (font system) are
required. I'm not sure whether the other dependencies can be optional.
4. GPL/LGPL
libjpeg is not GPL, but instead uses its own license (the Fedora RPM
calls it "redistributable"). You should read it yourself by downloading
jpegsrc.v6b.tar.gz at http://www.ijg.org/
See the "LEGAL ISSUES" section of the README file.
And you may want to read the GPL FAQ:
http://www.gnu.org/licenses/gpl-faq.html
That page also answers a few questions about the LGPL.
The LGPL boils down to something like this: you can dynamically link to
LGPL libraries, and you can distribute LGPL libraries with your
(proprietary) application, but you must also provide the source code of
the LGPL libraries.
I'm not a lawyer though.
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