Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. Installation and Deployment
  4. The same old topic: Licensing.
Forum Updated to NodeBB v4.3 + New Features

The same old topic: Licensing.

Scheduled Pinned Locked Moved Installation and Deployment
40 Posts 12 Posters 24.7k Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • M Offline
    M Offline
    mgran
    wrote on last edited by
    #10

    Have a look at this blog post for information about this directly from Qt legal:

    "http://blog.qt.nokia.com/2009/11/30/qt-making-the-right-licensing-decision/(http://blog.qt.nokia.com/2009/11/30/qt-making-the-right-licensing-decision/)":http://blog.qt.nokia.com/2009/11/30/qt-making-the-right-licensing-decision/

    Project Manager - Qt Development Frameworks

    1 Reply Last reply
    0
    • J Offline
      J Offline
      jorj
      wrote on last edited by
      #11

      [quote author="MariusG" date="1275501216"]Have a look at this blog post for information about this directly from Qt legal:

      "http://blog.qt.nokia.com/2009/11/30/qt-making-the-right-licensing-decision/(http://blog.qt.nokia.com/2009/11/30/qt-making-the-right-licensing-decision/)":http://blog.qt.nokia.com/2009/11/30/qt-making-the-right-licensing-decision/
      [/quote]

      Has that page changed recently? Because I'm sure I have been on a page with the same title, and it used to be not so useful, but now looks very good.

      1 Reply Last reply
      0
      • M Offline
        M Offline
        mgran
        wrote on last edited by
        #12

        Apart from a small css update it's the same as before.

        Project Manager - Qt Development Frameworks

        1 Reply Last reply
        0
        • U Offline
          U Offline
          ucomesdag
          wrote on last edited by
          #13

          [quote author="MariusG" date="1275501216"]Have a look at this blog post for information about this directly from Qt legal:

          "http://blog.qt.nokia.com/2009/11/30/qt-making-the-right-licensing-decision/(http://blog.qt.nokia.com/2009/11/30/qt-making-the-right-licensing-decision/)":http://blog.qt.nokia.com/2009/11/30/qt-making-the-right-licensing-decision/
          [/quote]

          Thanks that made it all clear to me!

          Write “Qt”, not “QT” (QuickTime).

          1 Reply Last reply
          0
          • S Offline
            S Offline
            sfilippidis
            wrote on last edited by
            #14

            Since comments at

            http://blog.qt.nokia.com/2009/11/30/qt-making-the-right-licensing-decision/

            are closed, I was wondering if I could have an answer at the following scenario/question:

            If someone writes a closed-source Qt application for Windows based on the LGPL-licenced Qt framework, and if he/she doesn't change the libraries, and if he/she linked dynamically with the dlls (Qt for Windows) then:

            a) if he/she doesn't provide the dlls but he/she only provides the exe
            b) if he/she provides both the exe and the dlls

            does he/she has to provide the (unchanged) source code of the dlls?

            https://www.filippidis.name/

            1 Reply Last reply
            0
            • D Offline
              D Offline
              DenisKormalev
              wrote on last edited by
              #15

              Stavros Filippidis, AFAIK in both cases you shouldn't provide code.

              1 Reply Last reply
              0
              • S Offline
                S Offline
                sfilippidis
                wrote on last edited by
                #16

                @_Denis Kormalev_: Just to clarify, I am NOT referring to the source code of the application, but to the source code of the Qt libraries (QtCore4.dll, QtGui4.dll, etc). In any case, I am not a lawyer, I am just have these questioned unanswered. :)

                https://www.filippidis.name/

                1 Reply Last reply
                0
                • D Offline
                  D Offline
                  DenisKormalev
                  wrote on last edited by
                  #17

                  [quote author="Stavros Filippidis" date="1276707919"]@_Denis Kormalev_: Just to clarify, I am NOT referring to the source code of the application, but to the source code of the Qt libraries (QtCore4.dll, QtGui4.dll, etc). In any case, I am not a lawyer, I am just have these questioned unanswered. :)[/quote]

                  Yeah, I understood that question is about Qt sources. Anyway when you use Qt with LGPL license you need to provide link to Qt. And everybody who wants can take sources from Qt website.

                  1 Reply Last reply
                  0
                  • J Offline
                    J Offline
                    jorj
                    wrote on last edited by
                    #18

                    (oooh, second page, ive never seen that before, very cool)

                    I think Qt could do more to explain its licences simply, as the previously linked page tried to do... I think there could be a further simplification of it...

                    1 Reply Last reply
                    0
                    • T Offline
                      T Offline
                      troubalex
                      wrote on last edited by
                      #19

                      We agree. However, licensing (and law in general) unfortunately isn't easy to simplify while giving correct information...

                      THE CAKE IS A LIE
                      Web Community Manager - Qt Development Frameworks

                      1 Reply Last reply
                      0
                      • S Offline
                        S Offline
                        sfilippidis
                        wrote on last edited by
                        #20

                        @Alexandra: In my opinion, it would be interesting if you would consider re-opening comments at

                        http://blog.qt.nokia.com/2009/11/30/qt-making-the-right-licensing-decision/

                        so that someone from Qt/Nokia's legal department could clarify additional questions that we could post there. ;)

                        https://www.filippidis.name/

                        1 Reply Last reply
                        0
                        • D Offline
                          D Offline
                          DenisKormalev
                          wrote on last edited by
                          #21

                          Stavros Filippidis, good idea. Also may be good will be to make FAQ about licensing issues. Alexandra Leisse, what do you (and other Trolls) think about it?

                          1 Reply Last reply
                          0
                          • J Offline
                            J Offline
                            jorj
                            wrote on last edited by
                            #22

                            [quote author="Alexandra Leisse" date="1276777620"]We agree. However, licensing (and law in general) unfortunately isn't easy to simplify while giving correct information...[/quote]

                            What about some simple use cases, specifying when and why you should use each licence... Although I suppose if it was that simple it would already exist...

                            A tricky topic....

                            1 Reply Last reply
                            0
                            • T Offline
                              T Offline
                              troubalex
                              wrote on last edited by
                              #23

                              I just talked to our lawyer and she has already planned for a follow-up to mentioned "blog(Licensing blog)":http://blog.qt.nokia.com/2009/11/30/qt-making-the-right-licensing-decision/. To make it easier for her to figure out what is still unclear and would be good to address, I have started "a wiki page(Licensing wiki)":http://developer.qt.nokia.com/wiki/LicensingQuestions.

                              Please, add your questions/suggestions there and we do our best to provide you with answers.

                              THE CAKE IS A LIE
                              Web Community Manager - Qt Development Frameworks

                              1 Reply Last reply
                              0
                              • S Offline
                                S Offline
                                sfilippidis
                                wrote on last edited by
                                #24

                                [quote author="Alexandra Leisse" date="1276877146"]I just talked to our lawyer and she has already planned for a follow-up to mentioned "blog(Licensing blog)":http://blog.qt.nokia.com/2009/11/30/qt-making-the-right-licensing-decision/. To make it easier for her to figure out what is still unclear and would be good to address, I have started "a wiki page(Licensing wiki)":http://developer.qt.nokia.com/wiki/LicensingQuestions.

                                Please, add your questions/suggestions there and we do our best to provide you with answers.[/quote]

                                I have just created this:

                                http://developer.qt.nokia.com/wiki/Question_Closed-source_application_scenario

                                But maybe I did something wrong and I do not see it at the Wiki! Could a TROLL please correct this? :)

                                EDIT:

                                I just noticed that I was supposed to EDIT the

                                http://developer.qt.nokia.com/wiki/LicensingQuestions

                                and NOT create a new wiki-page! So ... now I dit it (correctly!)!

                                Could a TROLL (please!) delete the

                                http://developer.qt.nokia.com/wiki/Question_Closed-source_application_scenario

                                which I shouln't have created the first place?

                                https://www.filippidis.name/

                                1 Reply Last reply
                                0
                                • T Offline
                                  T Offline
                                  troubalex
                                  wrote on last edited by
                                  #25

                                  [quote author="Stavros Filippidis" date="1277156563"]

                                  Could a TROLL (please!) delete the
                                  http://developer.qt.nokia.com/wiki/Question_Closed-source_application_scenario
                                  which I shouln't have created the first place?
                                  [/quote]

                                  Done. Thanks for adding this scenario!

                                  THE CAKE IS A LIE
                                  Web Community Manager - Qt Development Frameworks

                                  1 Reply Last reply
                                  0
                                  • J Offline
                                    J Offline
                                    jorj
                                    wrote on last edited by
                                    #26

                                    Yes, that scenario seems to cover the area in the middle I am more confused on... Interesting to see the result - thanks Stavros.

                                    1 Reply Last reply
                                    0
                                    • J Offline
                                      J Offline
                                      jeremy_c
                                      wrote on last edited by
                                      #27

                                      When are the answers on the referenced wiki page going to be answered, or have they already and I'm just not finding them?

                                      Jeremy
                                      http://www.kb8lfa.com

                                      1 Reply Last reply
                                      0
                                      • T Offline
                                        T Offline
                                        troubalex
                                        wrote on last edited by
                                        #28

                                        [quote author="jeremy_c" date="1282830434"]When are the answers on the referenced wiki page going to be answered, or have they already and I'm just not finding them?[/quote]

                                        Currently, Cristy - our lawyer - is working on her presentation for our Developer Days. The wiki is basis for that, among other things. It's supposed to help her understand what our users a struggling with.

                                        After the event in San Francisco we will make her presentation available publicly.

                                        I hope that helps.

                                        THE CAKE IS A LIE
                                        Web Community Manager - Qt Development Frameworks

                                        1 Reply Last reply
                                        0
                                        • S Offline
                                          S Offline
                                          sfilippidis
                                          wrote on last edited by
                                          #29

                                          [quote author="Alexandra Leisse" date="1283252630"][quote author="jeremy_c" date="1282830434"]When are the answers on the referenced wiki page going to be answered, or have they already and I'm just not finding them?[/quote]

                                          Currently, Cristy - our lawyer - is working on her presentation for our Developer Days. The wiki is basis for that, among other things. It's supposed to help her understand what our users a struggling with.

                                          After the event in San Francisco we will make her presentation available publicly.

                                          I hope that helps.[/quote]

                                          Do we have anything new on the licencing follow-up with Cristy? :)

                                          https://www.filippidis.name/

                                          1 Reply Last reply
                                          0

                                          • Login

                                          • Login or register to search.
                                          • First post
                                            Last post
                                          0
                                          • Categories
                                          • Recent
                                          • Tags
                                          • Popular
                                          • Users
                                          • Groups
                                          • Search
                                          • Get Qt Extensions
                                          • Unsolved