GPL apod. + omezeni

[Stanislav Meduna]

On Fri, 14 Jun 2002 14:53:20 +0000 (UTC), kratochvil na dbsystem.com wrote:

: Ale:
: je mozne aby clovek X zmenil licenci na dany produkt a dale ho vyvijel
: pod jinym modelem/licenci ? 

Samozrejme. S kodom, ktory napisal vylucne on, ci moze robit
cokolvek uzna za vhodne. Pokial pri tom neporusi ine licencne
podmienky (pouzitie GPL versus LGPL kniznic) a.p., moze povedat
"odteraz je to closed source a cista komercia" a hotovo.

: Pokud ano,
: je to tak, ze cast ktera jiz byla uverejnena pod GNU licenci, zustane 
: stale licencovana pod GNU a libovolny subjekt ji muze dal pod touto
: licenci vyvijet? 

Samozrejme ano - ked uz nieco bolo pod nejakou licenciou vydane,
spatne tuto licenciu zmenit nemozno (ledaze by to bolo v tej
povodnej licencii napisane).

Teda, ona to tam tato moznost pre FSF ciastocne je:
   If the Program specifies a version number of this License
   which applies to it and "any later version", you have the option
   of following the terms and conditions either of that version
   or of any later version published by the Free Software Foundation.

Su vyvojari, ktorym tato klauzulka vadi - nepamatam si uz presne
o ktore projekty ide (snad glibc?), ale celkom tomu rozumiem.
Toto je totiz moznost, ako moze FSF urobit s licenciou nieco,
s cim dany vyvojar nesuhlasi. V GPL je sice napisane, ze nove
verzie budu mat podobny zmysel, aj ked odlisne detaily,
ale keby nastala nejaka podstatna zmena, moze nastat slusny
chaos. Nie je teda jedno, ci urobite copy&paste a date k programu
standardny text
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
alebo tam napisete konkretne verziu 2.

Zdravi
-- 
                                   Stano