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can we change the compiler in qmake

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  • A Asha

    Hi,

    I am running one simple qt application,first i selected the normal desktop gcc compiler,

    but I am connecting the beagleboneboard to my laptop,so through some websites i got i need cross compiler,so now i installed arm cross compiler and selecting this compiler in kit configuration but that showing the red mark,

    and getting the issue,

    used g++ compiler in qmake ,now using the arm cross compiler

    so how to change the compiler in qmake..

    and how to run that application successfully

    thankyou

    jsulmJ Offline
    jsulmJ Offline
    jsulm
    Lifetime Qt Champion
    wrote on last edited by jsulm
    #2

    @asha said in can we change the compiler in qmake:

    showing the red mark

    First: please put mouse cursor over that red mark and check what it says (what the problem is).
    Second: you don't change compiler in qmake, you define the proper compiler in your Kit.
    In your Kit for the target device you need Qt compiled with cross compiler and the cross compiler.
    If in doubt please post screen shot of your Kit...

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

    1 Reply Last reply
    2
    • A Offline
      A Offline
      Asha
      wrote on last edited by
      #3

      Its showing the error:

      First:
      the compiler arm-linux-generic-elf64bit cannot produce code for the qt version "Qt 5.13.0 GCC 64bit"(x86-linux-generic-elf-64bit)..

      Second:yes giving the proper path for cross compiler,you can see here0_1568202773597_procom.png

      aha_1980A jsulmJ 2 Replies Last reply
      0
      • A Asha

        Its showing the error:

        First:
        the compiler arm-linux-generic-elf64bit cannot produce code for the qt version "Qt 5.13.0 GCC 64bit"(x86-linux-generic-elf-64bit)..

        Second:yes giving the proper path for cross compiler,you can see here0_1568202773597_procom.png

        aha_1980A Offline
        aha_1980A Offline
        aha_1980
        Lifetime Qt Champion
        wrote on last edited by
        #4

        @asha said in can we change the compiler in qmake:

        the compiler arm-linux-generic-elf64bit cannot produce code for the qt version "Qt 5.13.0 GCC 64bit"(x86-linux-generic-elf-64bit).

        Then you need a Qt version that fits your compiler (architecture and bitness) and you need to assign this to your compiler in the Kit.

        Qt has to stay free or it will die.

        1 Reply Last reply
        1
        • A Offline
          A Offline
          Asha
          wrote on last edited by
          #5

          any idea which version qt i have to install about this gcc cross compiler as i attached below please go through that one

          0_1568204702675_compiler (2).png

          If have any idea then please let me know...

          OR

          please give the information ,which supports any qt version and cross compiler both..

          thankyou

          1 Reply Last reply
          0
          • A Asha

            Its showing the error:

            First:
            the compiler arm-linux-generic-elf64bit cannot produce code for the qt version "Qt 5.13.0 GCC 64bit"(x86-linux-generic-elf-64bit)..

            Second:yes giving the proper path for cross compiler,you can see here0_1568202773597_procom.png

            jsulmJ Offline
            jsulmJ Offline
            jsulm
            Lifetime Qt Champion
            wrote on last edited by
            #6

            @asha said in can we change the compiler in qmake:

            the compiler arm-linux-generic-elf64bit cannot produce code for the qt version "Qt 5.13.0 GCC 64bit"(x86-linux-generic-elf-64bit)..

            Of course it can't. I already told you that you need a cross compiled Qt version. ARM != x86-64. That means you need download Qt source code and build it using your cross compiler and sysroot for your device.

            "Second:yes giving the proper path for cross compiler,you can see here" - no, I can't because you did not show your Kit. Did you select this compiler in your Kit?

            "any idea which version qt i have to install" - cross compile Qt by yourself.
            Here https://wiki.qt.io/index.php?title=Raspberrypi_beginners_guide&redirect=no is an explanation how to do it for RaspberryPi, but it is similar for other devices.

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

            1 Reply Last reply
            1
            • A Offline
              A Offline
              Asha
              wrote on last edited by
              #7

              here is the kit:0_1568206276133_kit (1).png

              jsulmJ 1 Reply Last reply
              0
              • A Asha

                here is the kit:0_1568206276133_kit (1).png

                jsulmJ Offline
                jsulmJ Offline
                jsulm
                Lifetime Qt Champion
                wrote on last edited by
                #8

                @asha Yes, the Qt version you selected can't be used with an ARM compiler.
                Cross compile Qt and set that one in the Kit.

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

                1 Reply Last reply
                0
                • A Offline
                  A Offline
                  Asha
                  wrote on last edited by
                  #9

                  Hi,

                  I downloaded the qt source code,

                  "qt-everywhere-opensource-src-5.7.1.tar.gz"

                  now trying to build this,here is the attachement0_1568272684375_build.png ,

                  is it correct?(because I am feeling like that again i am building the qt for linux-g++ only)

                  J.HilkJ 1 Reply Last reply
                  0
                  • A Asha

                    Hi,

                    I downloaded the qt source code,

                    "qt-everywhere-opensource-src-5.7.1.tar.gz"

                    now trying to build this,here is the attachement0_1568272684375_build.png ,

                    is it correct?(because I am feeling like that again i am building the qt for linux-g++ only)

                    J.HilkJ Online
                    J.HilkJ Online
                    J.Hilk
                    Moderators
                    wrote on last edited by
                    #10

                    @asha
                    what was your ./configure command?


                    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.

                    1 Reply Last reply
                    1
                    • A Offline
                      A Offline
                      Asha
                      wrote on last edited by
                      #11

                      here is the attachement0_1568274045294_config.png

                      1 Reply Last reply
                      0
                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #12

                        Hi,

                        From the looks of it, you're not telling configure that you want to cross-compile.

                        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
                        0
                        • A Offline
                          A Offline
                          Asha
                          wrote on last edited by
                          #13

                          Hi,

                          Thanks for the replay,please see the below attachement ,and please let me what is the problem, and how to solve this0_1568352141029_error2.png

                          jsulmJ 1 Reply Last reply
                          0
                          • A Asha

                            Hi,

                            Thanks for the replay,please see the below attachement ,and please let me what is the problem, and how to solve this0_1568352141029_error2.png

                            jsulmJ Offline
                            jsulmJ Offline
                            jsulm
                            Lifetime Qt Champion
                            wrote on last edited by
                            #14

                            @asha Did you read what @SGaist wrote?
                            You are NOT cross compiling!
                            You need to tell configure that you want to cross compile.
                            An example how to do this is here: https://www.raspberrypi.org/forums/viewtopic.php?t=204778

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

                            A 1 Reply Last reply
                            1
                            • jsulmJ jsulm

                              @asha Did you read what @SGaist wrote?
                              You are NOT cross compiling!
                              You need to tell configure that you want to cross compile.
                              An example how to do this is here: https://www.raspberrypi.org/forums/viewtopic.php?t=204778

                              A Offline
                              A Offline
                              Asha
                              wrote on last edited by
                              #15

                              @jsulm yes I read,what @SGaist wrote,

                              So,I stopped that configure and again done the configure with my cross compiler ,the above screenshot is for cross compiler only that is "arm-linux-gnueabihf"

                              Please go through that oone...

                              Pablo J. RoginaP 1 Reply Last reply
                              0
                              • A Asha

                                @jsulm yes I read,what @SGaist wrote,

                                So,I stopped that configure and again done the configure with my cross compiler ,the above screenshot is for cross compiler only that is "arm-linux-gnueabihf"

                                Please go through that oone...

                                Pablo J. RoginaP Offline
                                Pablo J. RoginaP Offline
                                Pablo J. Rogina
                                wrote on last edited by
                                #16

                                @asha said in can we change the compiler in qmake:

                                the above screenshot is for cross compiler only that is "arm-linux-gnueabihf"

                                Assuming that "beagle@beagle1" read from command prompt in that screenshot, it looks like you're working on your EMBEDDED DEVICE.

                                If so, then you are NOT cross-compiling, which whole purpose is by no means compiling in the target device.

                                You are supposed to only use the BBB device just to copy the cross-compiled Qt libraries and application (which are built in the host machine) and only run it there

                                Upvote the answer(s) that helped you solve the issue
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                                A 1 Reply Last reply
                                1
                                • SGaistS Offline
                                  SGaistS Offline
                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #17

                                  Did you check that you have libz in your sysroot ?

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

                                  A 1 Reply Last reply
                                  0
                                  • SGaistS SGaist

                                    Did you check that you have libz in your sysroot ?

                                    A Offline
                                    A Offline
                                    Asha
                                    wrote on last edited by
                                    #18

                                    @sgaist ,I checked it in qt kit configuration ,And I am not finding libz in my sysroot..

                                    1 Reply Last reply
                                    0
                                    • Pablo J. RoginaP Pablo J. Rogina

                                      @asha said in can we change the compiler in qmake:

                                      the above screenshot is for cross compiler only that is "arm-linux-gnueabihf"

                                      Assuming that "beagle@beagle1" read from command prompt in that screenshot, it looks like you're working on your EMBEDDED DEVICE.

                                      If so, then you are NOT cross-compiling, which whole purpose is by no means compiling in the target device.

                                      You are supposed to only use the BBB device just to copy the cross-compiled Qt libraries and application (which are built in the host machine) and only run it there

                                      A Offline
                                      A Offline
                                      Asha
                                      wrote on last edited by
                                      #19

                                      @pablo-j-rogina Sir,
                                      "beagle@beagle1" is my user name, where my target device name is debian@beaglebone.

                                      I am not successed with make run only,so I am not understood this lines

                                      "You are supposed to only use the BBB device just to copy the cross-compiled Qt libraries and application (which are built in the host machine) and only run it there"

                                      while make running getting error some library files are missing ,Like

                                      "error while loading shared libraries: libz.so.1: /home/beagle1/installQt/gcc-linaro-arm-linux-gnueabihf-4.8-2013.10_linux/bin/../libexec/gcc/arm-linux-gnueabihf4.8.2/cc1plus: error while loading shared libraries: libz.so.1: cannot open shared object file:
                                      No such file or directory"....

                                      1 Reply Last reply
                                      0
                                      • A Offline
                                        A Offline
                                        Asha
                                        wrote on last edited by
                                        #20

                                        One more thing ,

                                        SELinux status is Disable in my system,

                                        is this is issue?

                                        1 Reply Last reply
                                        0
                                        • SGaistS Offline
                                          SGaistS Offline
                                          SGaist
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #21

                                          No, the issue is that you don't seem to have zlib available for 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

                                          1 Reply Last reply
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