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Getting LNK2019 error on plugin compilation

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  • D deleted456

    Greetings,
    I just uninstalled qt and compiler then installed it from https://download.qt.io/archive/qt/5.5/5.5.1/
    I tried installing "qt-opensource-windows-x86-msvc2013_64-5.5.1.exe" and while installing i selected msvc2013_64 bit and installed Qt5.5 and msvc2013. On the kits panel i can see that Mscv2013_64 bit is installed but compiler shows 32bit version.

    2_1548593731602_7.png 1_1548593731602_6.png 0_1548593731601_5.png

    While building the plugin, I still get the error message i got in the previous version. And i'm not sure the issue is based on using different bit versions. There is no 64bit qt installer on https://download.qt.io/archive/qt/5.5/5.5.1/ and i can see that qt is compiled with
    Architecture: x86_64 (the last pic from my previous post).

    Could you please try to build the plugin by using your own qt and compiler and let me know about the specs? Cause im pretty sure that i installed the 64bit version of msvc2013 and respective sdk.

    Apologies for taking your time and thanks a lot.

    aha_1980A Offline
    aha_1980A Offline
    aha_1980
    Lifetime Qt Champion
    wrote on last edited by
    #6

    @wodasdsa

    Please show screenshots of you Kits (click on Desktop 5.5.1 ... resp. Desktop (default)) to see how the Kits are set up.

    Could you please try to build the plugin by using your own qt and compiler

    Unfortunately, no. I neither have Windows nor MSVC :)

    Qt has to stay free or it will die.

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    • D Offline
      D Offline
      deleted456
      wrote on last edited by
      #7

      Here you can see the information about kits,
      0_1548595843415_3.png

      Do you think these errors are based on using different bit versions? (btw i dont get the error and compile succesfully if i erase getPluginInfo() method from Reaxmpleplugin.cpp file (as i explained in my very first post)

      0_1548595903865_3.png

      Unfortunately, no. I neither have Windows nor MSVC :)

      Oh okey thanks a lot anyways..

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      • D Offline
        D Offline
        deleted456
        wrote on last edited by
        #8

        and the manual desktop (default) panel,

        0_1548596188432_4.png

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        • D Offline
          D Offline
          deleted456
          wrote on last edited by
          #9

          any update?

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

            Hi,

            From the looks of it, you don't export any symbol from your library. This means that, on Windows, the linker won't find them.

            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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            • D Offline
              D Offline
              deleted456
              wrote on last edited by deleted456
              #11

              @SGaist said in Getting LNK2019 error on plugin compilation:

              This means that, on Windows, the linker won't find them.

              Hello thanks for you answer, to be honest im quite newbie to qt and im not exactly got what you have suggested. You mean the compiler doesnt found qcadcore.lib,qcadgui.lib and qcadecmaapi.lib files in exampleplugin.pro file? And if so how can i solve it?
              Thanks a lot for your help

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

                Did yes, they want to see on them.

                It's rather that they are not generated because no symbol were exported.

                [edit: Something went wrong with the answer SGaist]

                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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                • D Offline
                  D Offline
                  deleted456
                  wrote on last edited by
                  #13

                  Sorry what do you mean?

                  I had .dll files from source code and used this method https://adrianhenke.wordpress.com/2008/12/05/create-lib-file-from-dll/ to create .lib files

                  jsulmJ 1 Reply Last reply
                  0
                  • D deleted456

                    Sorry what do you mean?

                    I had .dll files from source code and used this method https://adrianhenke.wordpress.com/2008/12/05/create-lib-file-from-dll/ to create .lib files

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

                    @wodasdsa You should read http://doc.qt.io/qt-5/sharedlibrary.html

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

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                    • D Offline
                      D Offline
                      deleted456
                      wrote on last edited by
                      #15

                      i dont think the problem is in libraries i cant compile without them either..

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

                        Can you show the relevant header(s) content ?

                        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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                        • D Offline
                          D Offline
                          deleted456
                          wrote on last edited by
                          #17

                          Sure,1_1549019333195_02.png 0_1549019333194_01.png
                          to see shared.pri you can check the following link,
                          https://github.com/qcad/qcad/blob/master/shared.pri

                          Thanks

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

                            You're on Windows and not exporting any symbol hence the problem. Do as @jsulm suggested and use the export macros.

                            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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                            1
                            • D Offline
                              D Offline
                              deleted456
                              wrote on last edited by
                              #19

                              How can i do that? im newbie to qt and didnt understand most the terms used in that documentation..

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                              • SGaistS Offline
                                SGaistS Offline
                                SGaist
                                Lifetime Qt Champion
                                wrote on last edited by
                                #20

                                Just follow the indications in the "Using Symbols from Shared Libraries" part.

                                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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