On Thursday 01 Jan 2009 2:00:14 am Praveen A wrote: > 2008/12/31 Kenneth Gonsalves <law...@au-kbc.org>: > > as far as I know, QT is some sort of toolkit which is used to build > > applications (I may be wrong). The question is: when I build an > > application using QT, am I modifying QT? Am I creating a derivative work > > of QT? If so, I have to release the code under GPL. If not why should I > > release it under GPL? Next some one will say that all code created using > > GNU C compiler has to be released under GPL. Or if I use the linux > > develop software I have to release > > Would your application work without QT? You need QT+your code to make > your application work. You don't need GNU C compiler for your built > code to work, you will need GNU C library (glibc). But glibc is under > LGPL. If glibc were under GPL, what you say will be correct. I think > the confusion is because we are not used to many GPLed libraries and > assume libraries can't be GPL.
anyway, one good thing is that I have now learned the difference between GPL and LGPL (I was under the impression that LGPL meant Lesser GPL - something that is not so strict as GPL). I was vaguely contemplating switching from wxPython to pyQT - now I realise how dangerous that is. Lesson: before using a library, make sure it is not under GPL. -- regards Kenneth Gonsalves Associate NRC-FOSS http://nrcfosshelpline.in/web/ -- http://mm.glug-bom.org/mailman/listinfo/linuxers
