About Trolltech QT OpenSource license.

[Robert Kern]

king kikapu wrote:
> On Apr 12, 1:02 am, Robert Kern <robert.k... at gmail.com> wrote:
>> All parts of the software have to be licensed compatibly with the GPL. The FSF
>> has a fairly comprehensive list of the licenses they believe are GPL-compatible.
>> The source that you provide needs to be the preferred form for making
>> modifications; i.e., you can't use a tool that obfuscates the code. You need to
>> provide the scripts that you use to build the software. You have to be careful
>> about using patented techniques in your code. The source code must be offered at
>> no extra charge (this part of the license is a bit tricky, so please read the
>> license and the commentaries).
> 
> Ok, i see...You said "All parts of the software have to be licensed
> compatibly with the GPL". What if, let's say, my application's GUI is
> made by Qt (Open Source edition that is indeed under GPL license) and
> in this application i use some module(s) that i bought from some other
> company and they aren't under GPL, do you see any implication to
> this ?

You will not be able to distribute your program if that module is under a
license which imposes more restrictions than the GPL does. The FSF maintains a
list of licenses which are compatible with the GPL:

  http://www.gnu.org/philosophy/license-list.html

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
 that is made terrible by our own mad attempt to interpret it as though it had
 an underlying truth."
  -- Umberto Eco