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Problems when adding serialport module in Qt project

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  • S Offline
    S Offline
    SGaist
    Lifetime Qt Champion
    wrote on 13 Jun 2018, 08:14 last edited by
    #11

    That's just the information about Qt Creator.

    You have to check the Kit you are using to build your application and which version of Qt it is using.

    Interested in AI ? www.idiap.ch
    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

    D 1 Reply Last reply 13 Jun 2018, 08:23
    0
    • D douglas
      13 Jun 2018, 07:57

      @KillerSmath I installed those packages via Software Center. Perhaps have I to uninstall them and re-install via apt-get?
      Could it be the reason for the "unknown module" error?

      K Offline
      K Offline
      KillerSmath
      wrote on 13 Jun 2018, 08:15 last edited by KillerSmath
      #12

      @douglas
      If nothing works, you can try to manage the packages from MaintenanceTool of QtCreator

        1. <Qt Folder>/MaintenanceTool
        1. Add or remove Components
        1. Expand your Qt version
        1. Expand Source Components
        1. Select the Qt Source Package
        1. Next, Install
      1 Reply Last reply
      0
      • S SGaist
        13 Jun 2018, 08:14

        That's just the information about Qt Creator.

        You have to check the Kit you are using to build your application and which version of Qt it is using.

        D Offline
        D Offline
        douglas
        wrote on 13 Jun 2018, 08:23 last edited by
        #13

        @SGaist how can I make sure of the Qt version I am using in my project?

        J 1 Reply Last reply 13 Jun 2018, 08:29
        0
        • K Offline
          K Offline
          KillerSmath
          wrote on 13 Jun 2018, 08:28 last edited by
          #14
          This post is deleted!
          1 Reply Last reply
          0
          • D douglas
            13 Jun 2018, 08:23

            @SGaist how can I make sure of the Qt version I am using in my project?

            J Offline
            J Offline
            J.Hilk
            Moderators
            wrote on 13 Jun 2018, 08:29 last edited by
            #15

            @douglas
            In QtCreator go to Tools -> Options -> build & run and check your kits

            0_1528878528527_b34127d9-9d4c-4f4e-896b-57a4a318f333-image.png

            In sidebar under the "Projects tab" you can select one of your installed kits:
            0_1528878587108_07154278-cd0d-49d8-b11f-48a5441b9854-image.png


            Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


            Q: What's that?
            A: It's blue light.
            Q: What does it do?
            A: It turns blue.

            D 1 Reply Last reply 13 Jun 2018, 08:45
            2
            • J J.Hilk
              13 Jun 2018, 08:29

              @douglas
              In QtCreator go to Tools -> Options -> build & run and check your kits

              0_1528878528527_b34127d9-9d4c-4f4e-896b-57a4a318f333-image.png

              In sidebar under the "Projects tab" you can select one of your installed kits:
              0_1528878587108_07154278-cd0d-49d8-b11f-48a5441b9854-image.png

              D Offline
              D Offline
              douglas
              wrote on 13 Jun 2018, 08:45 last edited by
              #16

              @J.Hilk My environment is a bit different; I can't find informations about the version..
              0_1528879450246_5ef95ff2-c072-4d13-894d-4b7af5bb41e7-immagine.png

              J 1 Reply Last reply 13 Jun 2018, 08:48
              0
              • D douglas
                13 Jun 2018, 08:45

                @J.Hilk My environment is a bit different; I can't find informations about the version..
                0_1528879450246_5ef95ff2-c072-4d13-894d-4b7af5bb41e7-immagine.png

                J Offline
                J Offline
                J.Hilk
                Moderators
                wrote on 13 Jun 2018, 08:48 last edited by
                #17

                @douglas
                from what one can see, it at least seems to be a version of Qt5, for more information press the "Manage kits" button


                Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


                Q: What's that?
                A: It's blue light.
                Q: What does it do?
                A: It turns blue.

                D 1 Reply Last reply 13 Jun 2018, 09:34
                0
                • J J.Hilk
                  13 Jun 2018, 08:48

                  @douglas
                  from what one can see, it at least seems to be a version of Qt5, for more information press the "Manage kits" button

                  D Offline
                  D Offline
                  douglas
                  wrote on 13 Jun 2018, 09:34 last edited by
                  #18

                  @J.Hilk The Manage Kit button shows the settings reported below, in which I can't find any information regarding the Qt version in use:
                  0_1528882243058_5fd714c7-c885-44b9-9911-43fbdc2ec394-immagine.png

                  If from terminal I write

                  $ qmake --version
                  

                  I obtain the following:

                  qmake: could not exec '/usr/lib/x86_64-linux-gnu/qt4/bin/qmake': No such file or directory
                  

                  Is it relevant the "qt4" shown in that prompt?
                  Thanks.

                  J 1 Reply Last reply 13 Jun 2018, 09:38
                  0
                  • D douglas
                    13 Jun 2018, 09:34

                    @J.Hilk The Manage Kit button shows the settings reported below, in which I can't find any information regarding the Qt version in use:
                    0_1528882243058_5fd714c7-c885-44b9-9911-43fbdc2ec394-immagine.png

                    If from terminal I write

                    $ qmake --version
                    

                    I obtain the following:

                    qmake: could not exec '/usr/lib/x86_64-linux-gnu/qt4/bin/qmake': No such file or directory
                    

                    Is it relevant the "qt4" shown in that prompt?
                    Thanks.

                    J Offline
                    J Offline
                    J.Hilk
                    Moderators
                    wrote on 13 Jun 2018, 09:38 last edited by
                    #19

                    @douglas
                    well, there we have your problem

                    0_1528882573156_25bb3434-9c9d-43e1-91e3-d1d195bd5377-image.png

                    you have no QtLibary selected to your kit. Se if you can actually select a QtVersion from that dropdown menu. If you can't than you need to install an actual qt version.

                    I would recommend the online installer from the Webside.


                    Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


                    Q: What's that?
                    A: It's blue light.
                    Q: What does it do?
                    A: It turns blue.

                    D 1 Reply Last reply 13 Jun 2018, 10:07
                    1
                    • J J.Hilk
                      13 Jun 2018, 09:38

                      @douglas
                      well, there we have your problem

                      0_1528882573156_25bb3434-9c9d-43e1-91e3-d1d195bd5377-image.png

                      you have no QtLibary selected to your kit. Se if you can actually select a QtVersion from that dropdown menu. If you can't than you need to install an actual qt version.

                      I would recommend the online installer from the Webside.

                      D Offline
                      D Offline
                      douglas
                      wrote on 13 Jun 2018, 10:07 last edited by
                      #20

                      @J.Hilk Thanks, I added the version as shown below:
                      0_1528884090398_f92cd759-ed4c-403b-9ff6-6b0378c19b45-immagine.png
                      Now, since I should have Qt5, I added the serialport support in my .pro file, but the "unknow module" error still remains. I saw another thing that seems not so clear to me: I run Qt Creator from linux terminal, and when I open my project the terminal shows the following lines, marked in red, in which appears Qt4. Can this be related to the serialport module error?
                      0_1528884382827_59039698-8cd0-49c5-8a93-a8c89abf87c9-immagine.png
                      thank you again.

                      J 1 Reply Last reply 13 Jun 2018, 11:47
                      0
                      • D douglas
                        13 Jun 2018, 10:07

                        @J.Hilk Thanks, I added the version as shown below:
                        0_1528884090398_f92cd759-ed4c-403b-9ff6-6b0378c19b45-immagine.png
                        Now, since I should have Qt5, I added the serialport support in my .pro file, but the "unknow module" error still remains. I saw another thing that seems not so clear to me: I run Qt Creator from linux terminal, and when I open my project the terminal shows the following lines, marked in red, in which appears Qt4. Can this be related to the serialport module error?
                        0_1528884382827_59039698-8cd0-49c5-8a93-a8c89abf87c9-immagine.png
                        thank you again.

                        J Offline
                        J Offline
                        jsulm
                        Lifetime Qt Champion
                        wrote on 13 Jun 2018, 11:47 last edited by
                        #21

                        @douglas Above you said you installed Qt 5.6, now you selected Qt 5.7.1
                        Which Qt version do you really want to use and did you install QtSearialPort for Qt 5.7.1?

                        https://forum.qt.io/topic/113070/qt-code-of-conduct

                        D 1 Reply Last reply 13 Jun 2018, 11:54
                        0
                        • J jsulm
                          13 Jun 2018, 11:47

                          @douglas Above you said you installed Qt 5.6, now you selected Qt 5.7.1
                          Which Qt version do you really want to use and did you install QtSearialPort for Qt 5.7.1?

                          D Offline
                          D Offline
                          douglas
                          wrote on 13 Jun 2018, 11:54 last edited by
                          #22

                          @jsulm when I spoke about Qt 5.6 I was referring to the "About Qt Creator" window shown above. Now I selected Qt 5.7.1 as the version for my kit. But the serialport module isn't recognized yet. What I should do to correctly install QtSerialPort for my actual version?

                          P 1 Reply Last reply 13 Jun 2018, 12:25
                          0
                          • D douglas
                            13 Jun 2018, 11:54

                            @jsulm when I spoke about Qt 5.6 I was referring to the "About Qt Creator" window shown above. Now I selected Qt 5.7.1 as the version for my kit. But the serialport module isn't recognized yet. What I should do to correctly install QtSerialPort for my actual version?

                            P Offline
                            P Offline
                            Pablo J. Rogina
                            wrote on 13 Jun 2018, 12:25 last edited by
                            #23

                            @douglas could it be possible that you start from scratch with a clean installation of Qt, ideally latest version 5.11? you may try in a virtual machine just in case.

                            Upvote the answer(s) that helped you solve the issue
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                            1 Reply Last reply
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                            • S Offline
                              S Offline
                              SGaist
                              Lifetime Qt Champion
                              wrote on 13 Jun 2018, 13:36 last edited by
                              #24

                              Is it me or are you trying to build your project for an embedded system ?
                              I see that you are trying to use an arm compiler, did you cross-compile Qt for your device ?

                              Interested in AI ? www.idiap.ch
                              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                              1 Reply Last reply
                              4
                              • D Offline
                                D Offline
                                douglas
                                wrote on 13 Jun 2018, 14:46 last edited by
                                #25

                                @SGaist Yes, my target device runs Linux Yocto. Can this affect the serialport module I am trying to install?

                                1 Reply Last reply
                                0
                                • S Offline
                                  S Offline
                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on 13 Jun 2018, 21:07 last edited by
                                  #26

                                  Sur it does, you are trying to install the desktop version of the driver and then, use it to do cross-compilation.

                                  Interested in AI ? www.idiap.ch
                                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                  D 1 Reply Last reply 14 Jun 2018, 06:28
                                  2
                                  • S SGaist
                                    13 Jun 2018, 21:07

                                    Sur it does, you are trying to install the desktop version of the driver and then, use it to do cross-compilation.

                                    D Offline
                                    D Offline
                                    douglas
                                    wrote on 14 Jun 2018, 06:28 last edited by
                                    #27

                                    @SGaist I see. So, if I need to cross-compile, which steps should I follow in order to use the serialport in my project?
                                    Are there different libraries or drivers I need to install on my host PC?
                                    The target linux embedded device runs Linux Yocto.

                                    J 1 Reply Last reply 14 Jun 2018, 06:33
                                    0
                                    • D douglas
                                      14 Jun 2018, 06:28

                                      @SGaist I see. So, if I need to cross-compile, which steps should I follow in order to use the serialport in my project?
                                      Are there different libraries or drivers I need to install on my host PC?
                                      The target linux embedded device runs Linux Yocto.

                                      J Offline
                                      J Offline
                                      jsulm
                                      Lifetime Qt Champion
                                      wrote on 14 Jun 2018, 06:33 last edited by
                                      #28

                                      @douglas You need Qt (together with Qt Searial Port) cross compiled for your device

                                      https://forum.qt.io/topic/113070/qt-code-of-conduct

                                      D 1 Reply Last reply 14 Jun 2018, 07:49
                                      2
                                      • J jsulm
                                        14 Jun 2018, 06:33

                                        @douglas You need Qt (together with Qt Searial Port) cross compiled for your device

                                        D Offline
                                        D Offline
                                        douglas
                                        wrote on 14 Jun 2018, 07:49 last edited by
                                        #29

                                        @jsulm I already set up the project in order to cross-compile for my target: in fact, I have already managed to run my application on the target device. The problem is the serial port module: I did not succeeded in including it into my project. Are there any particular hints to follow in the case of cross-compilation?
                                        Thank you!

                                        J J 2 Replies Last reply 14 Jun 2018, 07:55
                                        0
                                        • D douglas
                                          14 Jun 2018, 07:49

                                          @jsulm I already set up the project in order to cross-compile for my target: in fact, I have already managed to run my application on the target device. The problem is the serial port module: I did not succeeded in including it into my project. Are there any particular hints to follow in the case of cross-compilation?
                                          Thank you!

                                          J Offline
                                          J Offline
                                          jsulm
                                          Lifetime Qt Champion
                                          wrote on 14 Jun 2018, 07:55 last edited by
                                          #30

                                          @douglas Did you cross compile Qt serial port module?

                                          https://forum.qt.io/topic/113070/qt-code-of-conduct

                                          1 Reply Last reply
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