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How to build Qt on system without a GUI?

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  • Pavel_47P Pavel_47

    So, problems in Makefile ?

    jsulmJ Offline
    jsulmJ Offline
    jsulm
    Lifetime Qt Champion
    wrote on last edited by
    #54

    @Pavel_47 Try

    file /home/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so
    

    and post the output here.

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

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    • Pavel_47P Offline
      Pavel_47P Offline
      Pavel_47
      wrote on last edited by
      #55

      here it is:

      pavel@ALABAMA:~/raspi/qtbase$ file ~/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so
      /home/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so: symbolic link to libxkbcommon.so.0.0.0
      
      jsulmJ 1 Reply Last reply
      0
      • Pavel_47P Pavel_47

        here it is:

        pavel@ALABAMA:~/raspi/qtbase$ file ~/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so
        /home/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so: symbolic link to libxkbcommon.so.0.0.0
        
        jsulmJ Offline
        jsulmJ Offline
        jsulm
        Lifetime Qt Champion
        wrote on last edited by
        #56

        @Pavel_47 Then please do

        file /home/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so.0.0.0
        

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

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        • Pavel_47P Offline
          Pavel_47P Offline
          Pavel_47
          wrote on last edited by
          #57
          pavel@ALABAMA:~/raspi/qtbase$ file ~/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so.0.0.0
          /home/pavel/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so.0.0.0: cannot open `/home/pavel/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so.0.0.0' (No such file or directory)
          
          Pablo J. RoginaP 1 Reply Last reply
          0
          • Pavel_47P Pavel_47

            I've just checked libxkbcommon-dev and libxkbcommon-x11-dev on RPi. As on Ubuntu they are installed and are newest versions.

            Pablo J. RoginaP Offline
            Pablo J. RoginaP Offline
            Pablo J. Rogina
            wrote on last edited by
            #58

            @Pavel_47 said in How to build Qt on system without a GUI?:

            I've just checked libxkbcommon-dev and libxkbcommon-x11-dev on RPi.

            So sync them to your sysroot in the host PC!

            As on Ubuntu they are installed and are newest versions.

            Forget about that, it doesn't matter.

            For cross-compilation you need your libraries + headers installed properly in target device (RPi), then copy (synchronize) some folders from your target device into the sysroot folder in your host PC (with Ubuntu) and only then attempt to build (Qt framework, modules, your application).

            Please take a look at this guide for cross-compiling Qt for RPi

            Upvote the answer(s) that helped you solve the issue
            Use "Topic Tools" button to mark your post as Solved
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            Don't ask support requests via chat/PM. Please use the forum so others can benefit from the solution in the future

            Pavel_47P 1 Reply Last reply
            1
            • Pablo J. RoginaP Pablo J. Rogina

              @Pavel_47 said in How to build Qt on system without a GUI?:

              I've just checked libxkbcommon-dev and libxkbcommon-x11-dev on RPi.

              So sync them to your sysroot in the host PC!

              As on Ubuntu they are installed and are newest versions.

              Forget about that, it doesn't matter.

              For cross-compilation you need your libraries + headers installed properly in target device (RPi), then copy (synchronize) some folders from your target device into the sysroot folder in your host PC (with Ubuntu) and only then attempt to build (Qt framework, modules, your application).

              Please take a look at this guide for cross-compiling Qt for RPi

              Pavel_47P Offline
              Pavel_47P Offline
              Pavel_47
              wrote on last edited by
              #59

              @Pablo-J-Rogina said in How to build Qt on system without a GUI?:

              Please take a look at this guide for cross-compiling Qt for RPi

              I proceeded exactly as described on the page you mentioned.
              Sure I performed the resync with RPi

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              • Pavel_47P Pavel_47
                pavel@ALABAMA:~/raspi/qtbase$ file ~/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so.0.0.0
                /home/pavel/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so.0.0.0: cannot open `/home/pavel/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so.0.0.0' (No such file or directory)
                
                Pablo J. RoginaP Offline
                Pablo J. RoginaP Offline
                Pablo J. Rogina
                wrote on last edited by
                #60

                @Pavel_47 said in How to build Qt on system without a GUI?:

                Sure I performed the resync with RPi

                I'm not going to argue in contrary, so your next task is to figure out why even having rsync'd the file is missing from your sysroot folder...

                /home/pavel/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so.0.0.0: cannot open

                Upvote the answer(s) that helped you solve the issue
                Use "Topic Tools" button to mark your post as Solved
                Add screenshots via postimage.org
                Don't ask support requests via chat/PM. Please use the forum so others can benefit from the solution in the future

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                • Pavel_47P Offline
                  Pavel_47P Offline
                  Pavel_47
                  wrote on last edited by
                  #61

                  The file isn't missing. It's there:
                  alt text

                  Pablo J. RoginaP 1 Reply Last reply
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                  • Pavel_47P Pavel_47

                    The file isn't missing. It's there:
                    alt text

                    Pablo J. RoginaP Offline
                    Pablo J. RoginaP Offline
                    Pablo J. Rogina
                    wrote on last edited by
                    #62

                    @Pavel_47

                    The file isn't missing. It's there:

                    Well, it's somewhere else but not in the expected location it seems...

                    /home/pavel/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so.0.0.0

                    is different from the location in your last post (again, please stop posting screenshots!)

                    /home/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so.0.0.0

                    Upvote the answer(s) that helped you solve the issue
                    Use "Topic Tools" button to mark your post as Solved
                    Add screenshots via postimage.org
                    Don't ask support requests via chat/PM. Please use the forum so others can benefit from the solution in the future

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                    • Pavel_47P Offline
                      Pavel_47P Offline
                      Pavel_47
                      wrote on last edited by
                      #63

                      Sorry, I've been mistaken while executing:
                      file /home/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so.0.0.0

                      the correct result is here:

                      pavel@ALABAMA:~/raspi/qtbase$ file ~/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so.0.0.0
                      /home/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so.0.0.0: ELF 32-bit LSB shared object, ARM, EABI5 version 1 (SYSV), dynamically linked, BuildID[sha1]=ca40d4cec17c0cb8d6a85dcefc44fc89ac706d41, stripped
                      
                      
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                      • Pavel_47P Offline
                        Pavel_47P Offline
                        Pavel_47
                        wrote on last edited by
                        #64

                        I contacted Ran Benita, the developer of xkbcommon package, and exposed him the problem. After some checks on my system, here is his conclusion:

                        "The version of libxkbcommon you have in your arm-linux-gnueabihf raspi/sysroot is very very old. Qt requires a newer version. You should update your cross-compilation environment to something more recent."

                        Where /home/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so comes from ?

                        jsulmJ 1 Reply Last reply
                        0
                        • Pavel_47P Pavel_47

                          I contacted Ran Benita, the developer of xkbcommon package, and exposed him the problem. After some checks on my system, here is his conclusion:

                          "The version of libxkbcommon you have in your arm-linux-gnueabihf raspi/sysroot is very very old. Qt requires a newer version. You should update your cross-compilation environment to something more recent."

                          Where /home/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so comes from ?

                          jsulmJ Offline
                          jsulmJ Offline
                          jsulm
                          Lifetime Qt Champion
                          wrote on last edited by
                          #65

                          @Pavel_47 said in How to build Qt on system without a GUI?:

                          Where /home/pavel/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libxkbcommon.so comes from ?

                          From your Raspberry Pi when you're syncing it...
                          What exact OS (including version) do you run on it?

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

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                          • Pavel_47P Offline
                            Pavel_47P Offline
                            Pavel_47
                            wrote on last edited by
                            #66

                            uname -a
                            Linux raspberry 4.9.77-v7+

                            cat /etc/os-release
                            Raspian GNU/Linux 8 (jessie)

                            jsulmJ 1 Reply Last reply
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                            • Pavel_47P Pavel_47

                              uname -a
                              Linux raspberry 4.9.77-v7+

                              cat /etc/os-release
                              Raspian GNU/Linux 8 (jessie)

                              jsulmJ Offline
                              jsulmJ Offline
                              jsulm
                              Lifetime Qt Champion
                              wrote on last edited by
                              #67

                              @Pavel_47 You can try to upgrade to current Raspbian version and then recreate your sysroot.

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

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                              0
                              • Pavel_47P Offline
                                Pavel_47P Offline
                                Pavel_47
                                wrote on last edited by
                                #68

                                Well ... I did it just before resync. Then, as I remember, after some manipulations with other staff, system proposed to remove unused files ... and I did it. Ok, I'll try to upgrade one more time. Then what should I check on RPi3, that xkbcommon package is latest version ?

                                Pablo J. RoginaP 1 Reply Last reply
                                0
                                • Pavel_47P Pavel_47

                                  Well ... I did it just before resync. Then, as I remember, after some manipulations with other staff, system proposed to remove unused files ... and I did it. Ok, I'll try to upgrade one more time. Then what should I check on RPi3, that xkbcommon package is latest version ?

                                  Pablo J. RoginaP Offline
                                  Pablo J. RoginaP Offline
                                  Pablo J. Rogina
                                  wrote on last edited by
                                  #69

                                  @Pavel_47 said in How to build Qt on system without a GUI?:

                                  I'll try to upgrade one more time. Then what should I check on RPi3, that xkbcommon package is latest version ?

                                  please be aware that @jsulm is suggesting to update your OS, not just that library/package...

                                  Latest Raspbian release is Buster

                                  Upvote the answer(s) that helped you solve the issue
                                  Use "Topic Tools" button to mark your post as Solved
                                  Add screenshots via postimage.org
                                  Don't ask support requests via chat/PM. Please use the forum so others can benefit from the solution in the future

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                                  • Pavel_47P Offline
                                    Pavel_47P Offline
                                    Pavel_47
                                    wrote on last edited by
                                    #70

                                    Yes, I understood the suggestion and upgraded system ... but being within "jessie". The Buster is quite new version, released 3-4 months ago. Ran Benita qualified xkbcommon staff, that caused problems and that originates from Raspberry (if my comprehension is correct), as "very very old". So, let's say in May 2019 (before Buster) it was impossible to install Qt toolchain ... or I missed something ? I've just checked upgrade to Buster ... according to some manual I've found on the web, it could take several hours. So, is it really necessary to upgrade to Buster ?

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                                    • Pavel_47P Offline
                                      Pavel_47P Offline
                                      Pavel_47
                                      wrote on last edited by
                                      #71

                                      Has anyone managed to install Qt toolchain on Ubuntu that was synchronized with RPi running Buster ? If it's the case I will immediately buy new RPi4 and install Buster on it.

                                      jsulmJ 1 Reply Last reply
                                      0
                                      • Pavel_47P Pavel_47

                                        Has anyone managed to install Qt toolchain on Ubuntu that was synchronized with RPi running Buster ? If it's the case I will immediately buy new RPi4 and install Buster on it.

                                        jsulmJ Offline
                                        jsulmJ Offline
                                        jsulm
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #72

                                        @Pavel_47 I plan to do so this week. I already have RPi4, but need to install Buster first. Can't tell you when exactly I will do all this. You can ping me end of week (if it is not that urgent :-)).

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

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                                        • Pavel_47P Offline
                                          Pavel_47P Offline
                                          Pavel_47
                                          wrote on last edited by
                                          #73

                                          Finally I've tried to build Qt toolchain for RPi4 using this tutorial:
                                          Cross-Compile QT 5.12.6 / Raspberry Pi 4
                                          Once more ... doesn't work.
                                          Here is what I get while launching configure:

                                          make[2]: Leaving directory '/home/pavel/qtbase/src/widgets'
                                          make[1]: Leaving directory '/home/pavel/qtbase/src'
                                          Makefile:50: recipe for target 'sub-src-make_first' failed
                                          make: *** [sub-src-make_first] Error 2
                                          

                                          Any suggestions ?

                                          jsulmJ 1 Reply Last reply
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