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A few questions about cross-compiling on Rapberry pi

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  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #4

    The guide proposes to clone Qt using git that's why there's no mention of a Qt archive

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    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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    • I Offline
      I Offline
      ixpervision
      wrote on last edited by ixpervision
      #5

      Thanks for replies.
      I started working yesterday but I did not succeed to cross compile. I get error while performing qmake step on qtimageformat. Qtbase was not creat a problem and qmake works here well. All of the library gave following error witohut qtbase.

      /home/sefa/opt/qt5/qtimageformats/.qmake.conf:1: Cannot find feature qt_build_config
      Could not find qmake configuration file devices/linux-rasp-pi-g++.
      Error processing project file: ./qtimageformats.pro

      How can I fix it?

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      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #6

        How are you calling qmake ?

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        • I Offline
          I Offline
          ixpervision
          wrote on last edited by
          #7

          as /mnt/rasp-pi-rootfs/usr/local/qt5pi/bin/qmake.

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          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #8

            IIRC, you should also have one on your computer in /usr/local/qt5pi, use that one

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            • I Offline
              I Offline
              ixpervision
              wrote on last edited by
              #9

              Thanks. This solved my problem. .I approached the end and I have another problem now I'm glad if you help some more. I made all the adjustments on qt creator. when I was run the app I get the following error;

              :-1: error: Compiler /home/sefa/rsp/gcc-4.7-linaro-rpi-gnueabihf/bin/arm-linux-gnueabihf-g++ not found. Check the value of CROSS_COMPILE -device-option

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              • SGaistS Offline
                SGaistS Offline
                SGaist
                Lifetime Qt Champion
                wrote on last edited by
                #10

                As silly as it may sound, is the file there ?

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                • I Offline
                  I Offline
                  ixpervision
                  wrote on last edited by ixpervision
                  #11

                  No such directory as /home/sefa/rsp.... This is my previous trying. Although I show the directory for the compiler as /home/sefa/opt/gcc-4.7-linaro-rpi-gnueabihf/bin/arm-linux-gnueabihf-g++. I get error that /home/sefa/rsp/gcc-4.7-linaro-rpi-gnueabihf/bin/arm-linux-gnueabihf-g++ not found. Check the value of CROSS_COMPILE -device-option.

                  I do not understand why there is such.

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                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #12

                    You moved it after having compiled Qt ?

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                    • I Offline
                      I Offline
                      ixpervision
                      wrote on last edited by ixpervision
                      #13

                      Ok I solved this issue by mkdir /home/sefa/rsp.. and copy past the compiler here. What about Unknown module(s) in QT: quick. This problem probably stems from this, at the end of the document said, go to the “Rasperry Pi” kit tab->System Environment and add LD_LIBRARY_PATH which is set to /usr/local/qt5pi/lib. But I do not know how to do it?

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                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #14

                        Before modifying anything, did you compile/install that module ?

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                        • I Offline
                          I Offline
                          ixpervision
                          wrote on last edited by
                          #15

                          I have a qtquick1 file. And I run the following string in this file.
                          /usr/local/qt5pi/bin/qmake .
                          make -j 4
                          sudo make install

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                          • SGaistS Offline
                            SGaistS Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on last edited by
                            #16

                            You need to build the qtdeclarative module. qtquick1 is for the version of 1

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                            • I Offline
                              I Offline
                              ixpervision
                              wrote on last edited by
                              #17

                              When I compiled qtdeclarative I get the following error.

                              make[2]: Entering directory /home/sefa/opt/qt5/qtdeclarative/src/qmldevtools' make[2]: *** No rule to make target /mnt/rasp-pi-rootfs/usr/local/qt5pi/include/QtCore/qglobal.h', needed by .obj/qqmljsast.o'. Stop. make[2]: Leaving directory /home/sefa/opt/qt5/qtdeclarative/src/qmldevtools'
                              make[1]: *** [sub-qmldevtools-make_first-ordered] Error 2
                              make[1]: Leaving directory `/home/sefa/opt/qt5/qtdeclarative/src'
                              make: *** [sub-src-make_first] Error 2

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                              • SGaistS Offline
                                SGaistS Offline
                                SGaist
                                Lifetime Qt Champion
                                wrote on last edited by
                                #18

                                Did you mount your Raspberry Pi root filesystem before building ?

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                                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                • I Offline
                                  I Offline
                                  ixpervision
                                  wrote on last edited by
                                  #19

                                  Yes I did. Also I get another error when make app without using qtquick as;

                                  error: error trying to exec 'cc1plus': execvp: No such file or directory

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                                  • I Offline
                                    I Offline
                                    ixpervision
                                    wrote on last edited by
                                    #20

                                    SGasist, Is there something you think about this issue ?

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                                    • SGaistS Offline
                                      SGaistS Offline
                                      SGaist
                                      Lifetime Qt Champion
                                      wrote on last edited by
                                      #21

                                      Did you move anything around like your compiler folder ?

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                                      • I Offline
                                        I Offline
                                        ixpervision
                                        wrote on last edited by
                                        #22

                                        No I did not move anything.

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                                        • SGaistS Offline
                                          SGaistS Offline
                                          SGaist
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #23

                                          Then clean the module and call qmake again with your Rasberry Pie root filesystem mounted

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                                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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