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Building QT6 from Source failed (qtbase printsupport_autogen\timestamp)

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  • B BDC_Patrick
    14 Apr 2021, 22:11

    @SGaist What do you mean exactly?
    As said, I'm relatively new to building things with cmd/shell..

    J Online
    J Online
    jsulm
    Lifetime Qt Champion
    wrote on 15 Apr 2021, 06:39 last edited by
    #8

    @BDC_Patrick said in Building QT6 from Source failed (qtbase printsupport_autogen\timestamp):

    What do you mean exactly?

    Use MinGW wich you can install (probably already installed) through Qt Online Installer (or Qt Maintenance Tool) instead of C:\msys64\mingw64

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

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    • B Offline
      B Offline
      BDC_Patrick
      wrote on 15 Apr 2021, 09:15 last edited by
      #9

      Yes.. i´ve installed QT6 Creator..

      So.. you said, that i don´t need to build it from Source to be used under LGPL..
      But, how to give the Users the Source after finishing.. is it stored locally somewhere in the QT Directories?

      J S 2 Replies Last reply 15 Apr 2021, 11:59
      0
      • B BDC_Patrick
        15 Apr 2021, 09:15

        Yes.. i´ve installed QT6 Creator..

        So.. you said, that i don´t need to build it from Source to be used under LGPL..
        But, how to give the Users the Source after finishing.. is it stored locally somewhere in the QT Directories?

        J Online
        J Online
        jsulm
        Lifetime Qt Champion
        wrote on 15 Apr 2021, 11:59 last edited by
        #10

        @BDC_Patrick said in Building QT6 from Source failed (qtbase printsupport_autogen\timestamp):

        So.. you said, that i don´t need to build it from Source

        Where?
        All I said (actually @SGaist) is that you should use MinGW provided through Qt Online Installer/Qt Maintenance Tool...

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

        B 1 Reply Last reply 15 Apr 2021, 12:17
        0
        • B BDC_Patrick
          15 Apr 2021, 09:15

          Yes.. i´ve installed QT6 Creator..

          So.. you said, that i don´t need to build it from Source to be used under LGPL..
          But, how to give the Users the Source after finishing.. is it stored locally somewhere in the QT Directories?

          S Offline
          S Offline
          SGaist
          Lifetime Qt Champion
          wrote on 15 Apr 2021, 12:16 last edited by
          #11

          @BDC_Patrick said in Building QT6 from Source failed (qtbase printsupport_autogen\timestamp):

          Yes.. i´ve installed QT6 Creator..

          So.. you said, that i don´t need to build it from Source to be used under LGPL..
          But, how to give the Users the Source after finishing.. is it stored locally somewhere in the QT Directories?

          There never was such a restriction.

          The online installer already provides Qt 6 pre-built binaries.

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

          B 1 Reply Last reply 15 Apr 2021, 12:44
          0
          • J jsulm
            15 Apr 2021, 11:59

            @BDC_Patrick said in Building QT6 from Source failed (qtbase printsupport_autogen\timestamp):

            So.. you said, that i don´t need to build it from Source

            Where?
            All I said (actually @SGaist) is that you should use MinGW provided through Qt Online Installer/Qt Maintenance Tool...

            B Offline
            B Offline
            BDC_Patrick
            wrote on 15 Apr 2021, 12:17 last edited by
            #12

            @jsulm Yeah.. it was @jobor , my mistake.

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            • S SGaist
              15 Apr 2021, 12:16

              @BDC_Patrick said in Building QT6 from Source failed (qtbase printsupport_autogen\timestamp):

              Yes.. i´ve installed QT6 Creator..

              So.. you said, that i don´t need to build it from Source to be used under LGPL..
              But, how to give the Users the Source after finishing.. is it stored locally somewhere in the QT Directories?

              There never was such a restriction.

              The online installer already provides Qt 6 pre-built binaries.

              B Offline
              B Offline
              BDC_Patrick
              wrote on 15 Apr 2021, 12:44 last edited by
              #13

              @SGaist OK.. to be clear.. cause those license Stuff is beyond a normal human beings context.. :

              To fulfill the LGPL License, the binary QT (without Virt. Keyboard, Charts, Data Viz.. is absolutely OK..? Am I right there?
              What about the Source offering?

              And most: what if I want to keep my Application code private.. and not. open source..?

              J 1 Reply Last reply 15 Apr 2021, 12:56
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              • B BDC_Patrick
                15 Apr 2021, 12:44

                @SGaist OK.. to be clear.. cause those license Stuff is beyond a normal human beings context.. :

                To fulfill the LGPL License, the binary QT (without Virt. Keyboard, Charts, Data Viz.. is absolutely OK..? Am I right there?
                What about the Source offering?

                And most: what if I want to keep my Application code private.. and not. open source..?

                J Online
                J Online
                jsulm
                Lifetime Qt Champion
                wrote on 15 Apr 2021, 12:56 last edited by
                #14

                @BDC_Patrick LGPL is fine for closed source software. You only have to open source your changes to Qt itself if you do any. And you have to make sure users of your software can relink your softwareagainst their own Qt builds (easy if you use shared libs, for static builds you need to provide object files, but not source code!).

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

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                • D Offline
                  D Offline
                  dreckeffekt
                  wrote on 3 Nov 2021, 17:36 last edited by
                  #15

                  Hi, I know this topic is quite old but I'm currently having the same issue (I'm also quite new when it comes to all of this).

                  I get the same error at different steps in the build, so the module does not seem to matter, but it always fails at a [some module]_autogen\timestamp.
                  While I'll have to confirm this, I think this might have something to do with the ninja multi-config generator that's used when setting the '-debug-and-release' flag on configure.bat, as this doesn't seem to happen when only building for Release configuration. Does anyone have a fix for this or did switching the compiler work for you @BDC_Patrick ?

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                  • N Offline
                    N Offline
                    Niyas Sait
                    wrote on 5 Mar 2022, 21:45 last edited by
                    #16

                    Hi, I am running into the same issue, Is there any solution for this?

                    My Environment:

                    Host and Target: Windows 11 / Arm64 ( Surface Pro)
                    Compiler: MSVC v142
                    Commit: Tag v6.2.3 and a9c9418c(dev HEAD)
                    CMake: 3.21.4
                    Python: 3.10.0
                    Ninja: 1.10.2

                    1 Reply Last reply
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                    • M Offline
                      M Offline
                      maisoui
                      wrote on 11 Aug 2022, 08:51 last edited by
                      #17

                      Hi,

                      same problem here. I tried unsuccessfully different versions of CMAKE.
                      Has anyone found the solution? I really need to build Qt from sources.

                      Regards

                      1 Reply Last reply
                      0
                      • H Offline
                        H Offline
                        habersaa
                        wrote on 12 Mar 2024, 07:42 last edited by
                        #18

                        Hey.
                        We are experiencing the same issues with ninja and MSVC2019, but on another big Qt/QML project that we are building with Qt 6.6.0. On the CI, one every 3-5 build fails with this error related to timestamp.

                        Do anyone have an idea how to debug/avoid this issue ?

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                        • A Offline
                          A Offline
                          avautour
                          wrote on 18 Jun 2025, 15:53 last edited by
                          #19

                          I know this is an old post, but I figured I'd add this information as I ran into it.

                          I don't think it is related to autogen or timestamps, I believe it is related to precompiled header files in general, because some of the failures I ran into had nothing to do with autogen, even thought some of them did:

                          /Fdqtbase\src\openglwidgets\CMakeFiles\OpenGLWidgets.dir\ /FS -c qtbase\src\openglwidgets\CMakeFiles\OpenGLWidgets.dir\cmake_pch.cxx Microsoft (R) C/C++ Optimizing Compiler Version 19.29.30153 for x64 Copyright (C) Microsoft Corporation. All rights reserved. ninja: build stopped: subcommand failed.

                          11:55:53 [836/4092] Building CXX object qtlanguageserver\src\jsonrpc\CMakeFiles\JsonRpcPrivate.dir\cmake_pch.cxx.obj 11:55:53 [837/4092] Building CXX object qtgrpc\src\protobuf\CMakeFiles\Protobuf.dir\cmake_pch.cxx.obj 11:55:53 [838/4092] Building CXX object qtserialport\src\serialport\CMakeFiles\SerialPort.dir\cmake_pch.cxx.obj 11:55:53 [839/4092] Building CXX object qtconnectivity\src\nfc\CMakeFiles\Nfc.dir\cmake_pch.cxx.obj 11:55:53 ninja: build stopped: subcommand failed.

                          I was able to work-around it by disabling precompiled headers files by adding -DCMAKE_DISABLE_PRECOMPILE_HEADERS=ON to the CMake generation step. I was using the CMake with Visual Studio 2019 ( 3.20.21032501-MSVC_2) on Qt 6.7.3.

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