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Having trouble building Qt 6 from source

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  • S Offline
    S Offline
    SkeletonHorse
    wrote last edited by SGaist
    #1

    Hey recently I've been trying to build Qt from source but lately I've had a bit of trouble.

    I got through the ./configure part but I seem to be having trouble with the building process.
    from what I'm seeing in the terminal I think i got through the first half of the build process just fine as it sent the message:
    "Done. Made 25070 targets from 3566 files in 31434ms"
    but when it started prompting ninja for the build process, midway through I got these specific lines
    "- AutoMoc: /home/<self>/Documents/file-building/QTBUILD/incas/qt-everywhere-src-6.10.2/qtserialbus/src/serialbus/qcanframeprocessor.h: note: No relevant classes found. No output generated.

    • [11943/12791] Generating wayland-wayland-server-protocol.h

    -%3Cstdin%3E:2307: element event: validity error : No declaration for attribute deprecated-since of element event "

    and then right after that i got the error
    WARNING: XML failed validation against built-in DTD
    about 4 times.

    I'm pretty sure the build process failed as the convenience script to configure the build didn't work after i inputted it
    I'm pretty sure I have all the correct dependencies in order so I don't know what exactly caused this error, and theres not a lot of good info on building Qt on linux so any help from here would be much appreciated.

    (For further specification I am using Ubuntu Studio as my linux distro)

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote last edited by SGaist
      #2

      Hi and welcome to devnet,

      From the look of ./configure you are doing a build within the first level of the sources. Don't.
      Do an out of source build.
      It's shown in the Linux building guide.

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

      S 1 Reply Last reply
      1
      • SGaistS SGaist

        Hi and welcome to devnet,

        From the look of ./configure you are doing a build within the first level of the sources. Don't.
        Do an out of source build.
        It's shown in the Linux building guide.

        S Offline
        S Offline
        SkeletonHorse
        wrote last edited by
        #3

        @SGaist do you mean as in like doing it in the file directory itself? as i did cd in the directed file directory before i did configure

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

          If you are meaning calling configure from the root of the Qt sources, then yes, that is wrong.
          As already written, do an out of source build just as explained in the documentation.

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

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          • S Offline
            S Offline
            SkeletonHorse
            wrote last edited by
            #5

            I don't understand i did cd in dev/qt-build before doing configure like the documentation said i dont know how id be doing it wrong

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

              Can you please list the exact steps you used ?
              Also, did you re-start from a clean set of sources ?

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

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              • S Offline
                S Offline
                SkeletonHorse
                wrote last edited by
                #7

                I followed the exact documentation you sent me
                i extracted the source code
                did cd dev/qtbuild
                did configure
                did the make parallel command
                and then got the errors i listed

                SGaistS 1 Reply Last reply
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                • S Offline
                  S Offline
                  SkeletonHorse
                  wrote last edited by
                  #8

                  also is there any way to edit a post after an hour i accidentally left my system name when writing this forum post before going back to bed and it wont let me change it and im unsure if i want to leave that data just out there for random people to see on the internet and such

                  SGaistS 1 Reply Last reply
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                  • S SkeletonHorse

                    also is there any way to edit a post after an hour i accidentally left my system name when writing this forum post before going back to bed and it wont let me change it and im unsure if i want to leave that data just out there for random people to see on the internet and such

                    SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote last edited by
                    #9

                    @SkeletonHorse said in Having trouble building Qt 6 from source:

                    also is there any way to edit a post after an hour i accidentally left my system name when writing this forum post before going back to bed and it wont let me change it and im unsure if i want to leave that data just out there for random people to see on the internet and such

                    Fixed

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

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                    • S SkeletonHorse

                      I followed the exact documentation you sent me
                      i extracted the source code
                      did cd dev/qtbuild
                      did configure
                      did the make parallel command
                      and then got the errors i listed

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

                      @SkeletonHorse said in Having trouble building Qt 6 from source:

                      I followed the exact documentation you sent me
                      i extracted the source code
                      did cd dev/qtbuild
                      did configure
                      did the make parallel command
                      and then got the errors i listed

                      Can you share the summary once configure has run ?

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

                      S 1 Reply Last reply
                      0
                      • SGaistS SGaist

                        @SkeletonHorse said in Having trouble building Qt 6 from source:

                        I followed the exact documentation you sent me
                        i extracted the source code
                        did cd dev/qtbuild
                        did configure
                        did the make parallel command
                        and then got the errors i listed

                        Can you share the summary once configure has run ?

                        S Offline
                        S Offline
                        SkeletonHorse
                        wrote last edited by
                        #11

                        @SGaist as in the config.summary file written?

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

                          That one yes

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

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                          • S Offline
                            S Offline
                            SkeletonHorse
                            wrote last edited by
                            #13

                            The summary file is pretty long, do I send it with the upload file option or are you just looking for specific parts of the file that I can relay to you?

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

                              Currently I don't have any specifics in mind.

                              I just realized something, the Moc message is correct, QCanFrameProcessor is indeed not a QObject based class.

                              Can you build Qt with parallel at 1 ?

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

                              S 1 Reply Last reply
                              0
                              • SGaistS SGaist

                                Currently I don't have any specifics in mind.

                                I just realized something, the Moc message is correct, QCanFrameProcessor is indeed not a QObject based class.

                                Can you build Qt with parallel at 1 ?

                                S Offline
                                S Offline
                                SkeletonHorse
                                wrote last edited by
                                #15

                                @SGaist I did build Qt with parrallel, though I dont undesrstand what you mean by building it "at 1" forgive me for my need for specifics, I just dont know much about qt and I'm building it for specific capabilites only available to such version.

                                Anyways could you elaborate on building it "at 1" ?

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

                                  Either remove parallel from the parameters or set its value to 1.

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

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                                  • S Offline
                                    S Offline
                                    SkeletonHorse
                                    wrote last edited by
                                    #17

                                    How do I set the value to 1?

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

                                      --parallel 1

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

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                                      • S Offline
                                        S Offline
                                        SkeletonHorse
                                        wrote last edited by
                                        #19

                                        I have set it's value to one but I seem to have encountered the same build error.

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                                        • S Offline
                                          S Offline
                                          SkeletonHorse
                                          wrote last edited by
                                          #20

                                          if it means anything I did get this warning
                                          while looking at the configure summary file:
                                          "Required Python dependencies NOT found: spdx_tools.spdx.clitools.pyspdxtools"
                                          While also getting this warning during the build process:
                                          "WARNING: Support for linking against a C++ standard library other
                                          than the one in-tree (buildtools/third_party/libc++) is deprecated
                                          and support for this will end. We plan to remove this option in
                                          M138."
                                          Do you think any of these might be the source of my problem?

                                          S 1 Reply Last reply
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