[Qt-interest] LGPL and static linking
Stefan Josefsson
stefan.josefsson at vsmgroup.com
Wed Nov 25 10:09:40 CET 2009
Hi,
I am planning to develop a commercial closed source application on top of
Qt/E and would like to use Qt statically linked to my application as this
gives a substantial boost to the startup time and also reduces the RAM
usage. The question is whether I am allowed to use the LGPL license of Qt.
I have read a number of discussions about LGPL and static linking and some
say that it is not allowed (those that know a little bit less?) and some
say that it is allowed (those that know a bit more?) as long as you
provide the rest of the world with a way to recompile the application with
a modified version of the LPGL:d code (Qt in this case). See for instance
these links:
http://www.gamedev.net/community/forums/topic.asp?topic_id=541047
http://www.ics.com/files/docs/Qt_LGPL.pdf
http://ubuntuforums.org/showthread.php?t=1066632
What is Nokias view of static linking and LGPL?
I also just read on the blog that the QtScript module from now on will be
under LPGL even if you buy a commercial license of Qt, so a commercial
license is not the solution for using static linking with Qt if you want
to use QtScript.
Thanks,
Stefan
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