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One Point of the Qt LGPL license

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  • E Offline
    E Offline
    evanxg852000
    wrote on last edited by
    #1

    Hi evryone, I Have a small app that uses qt dlls dinamically . I am willing to make it commercial app .
    I just use the qt SDK as it is provided from the official installation without any other 3rd party lib or modification.
    Assuming the LGPL licence v2.1 and these explanations

    "DevDays2009 - Making the Licensing Decision - LGPL vs. Commercial":http://qt.nokia.com/developer/learning/online/talks/developerdays2009/qt-in-use/making-the-licensing-decision2014lgpl-vs.-commercial

    can I sell my application with the binaries only or do I have to provide my application source code along with ?
    I went through it but "Section 6 Requirements (cont’d) " is not clear
    thanks for the help

    [edit: adjusted link -mariusg]

    Evan-XG

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    • A Offline
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      andre
      wrote on last edited by
      #2

      Refer to the 2010 DevDays presentation on this. It was quite clear, I think.

      Short answer: you do not need to supply sources of your own binaries, provided that you:

      • link dynamically, and
      • either use the standard Qt library files,
      • or use modified Qt libary files, and provide the source for your modified Qt libraries
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      • E Offline
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        evanxg852000
        wrote on last edited by
        #3

        thanks a lot . the link above is from the devdays presentation but it was not clear for me . I found a blog post "Here":http://blog.qt.nokia.com/2009/11/30/qt-making-the-right-licensing-decision/
        that one was really much clear for me may be the keynote of the devdays presentation was much more explanatory. anyway your answer is another explanation to my question so and thanks lot.

        Evan-XG

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        • A Offline
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          andre
          wrote on last edited by
          #4

          I was talking about dev days 2010 "talk":http://qt.nokia.com/developer/learning/online/talks/developerdays2010/qt-in-use. You were refering to the 2009 talk.

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