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    Unsolved error : undefined reference to `qt_resourceFeatureZlib'

    Installation and Deployment
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    • S
      sberkantgulen last edited by

      Hello,

      When i install qt automatically with commands below. It works.
      Qt version is 5.9 when i install Qt with this commands.

      sudo apt install build-essential
      sudo apt install qtcreator
      sudo apt install qt5-default
      

      But i'm installing another Qt version which is 5.14.2 and then I'm trying to compile & run my Qt Gui App and i see following error.

      *undefined reference to `qt_resourceFeatureZlib'*
      

      All other setups are the same. for both installation!

      error.png

      error2.png

      jsulm 1 Reply Last reply Reply Quote 0
      • jsulm
        jsulm Lifetime Qt Champion @sberkantgulen last edited by

        @sberkantgulen said in error : undefined reference to `qt_resourceFeatureZlib':

        i'm installing another Qt version

        How exactly?

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

        S 1 Reply Last reply Reply Quote 0
        • S
          sberkantgulen @jsulm last edited by

          @jsulm Thanks for answer.

          I downloaded qt offline installer then i installed it on ubuntu 18.04.

          qt-opensource-linux-x64-5.14.2.run
          https://download.qt.io/archive/qt/5.14/5.14.2/

          By the way, Qt examples work correctly.

          jsulm 1 Reply Last reply Reply Quote 0
          • jsulm
            jsulm Lifetime Qt Champion @sberkantgulen last edited by

            @sberkantgulen Can you post the whole compile output?
            Do you have any pre-build binaries?

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

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            • S
              sberkantgulen last edited by

              @jsulm said in error : undefined reference to `qt_resourceFeatureZlib':

              build

              error3.png

              Is there any difference between PKG_CONFIG ?

              export PKG_CONFIG_PATH=/usr/lib/x86_64-linux-gnu/pkgconfig/
              source ~/.bashrc
              echo $PKG_CONFIG_PATH

              jsulm 1 Reply Last reply Reply Quote 0
              • jsulm
                jsulm Lifetime Qt Champion @sberkantgulen last edited by

                @sberkantgulen This is not the whole compile output. Please do a complete rebuild and post the compile output (delete build folder, run qmake and build).

                There shouldn't be any need to set PKG_CONFIG_PATH.

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

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                • S
                  sberkantgulen last edited by

                  It is so long, you can download from link below.

                  https://s5.dosya.tc/server4/f78313/qt_build.odt.html

                  jsulm 1 Reply Last reply Reply Quote 0
                  • jsulm
                    jsulm Lifetime Qt Champion @sberkantgulen last edited by

                    @sberkantgulen Please upload a simple text file, not Open Office one (I will not open office files)...

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

                    1 Reply Last reply Reply Quote 0
                    • S
                      sberkantgulen last edited by

                      Uh, sorry..

                      https://s5.dosya.tc/server4/smn9tn/err.txt.html

                      jsulm 1 Reply Last reply Reply Quote 0
                      • jsulm
                        jsulm Lifetime Qt Champion @sberkantgulen last edited by

                        @sberkantgulen Linker cannot find your libs:

                        /usr/bin/ld: cannot find -lBL
                        /usr/bin/ld: cannot find -lDL
                        

                        You should check how you handle the dependencies between your subfolders.
                        g++ -Wl,-rpath,/home/kkvyz1/Qt5.14.2/5.14.2/gcc_64/lib -o PL main.o qrc_qml.o -L/usr/lib/x86_64-linux-gnu/ -L/home/kkvyz1/Desktop/dQGCS/dev/build-YKI-Desktop_Qt_5_14_2_GCC_64bit-Debug/PL/../BL/ -lBL -L/home/kkvyz1/Desktop/dQGCS/dev/build-YKI-Desktop_Qt_5_14_2_GCC_64bit-Debug/PL/../DL/ -lDL -lcairo -lQt5GStreamerQuick-1.0 -lQt5Quick -lQt5Gui -lQt5Qml -lQt5Network -lgstvideo-1.0 -lgstbase-1.0 -lgstreamer-1.0 -lgobject-2.0 -lglib-2.0 -lQt5GStreamer-1.0 -lQt5GLib-2.0 -lQt5Core /home/kkvyz1/Qt5.14.2/5.14.2/gcc_64/lib/libQt5Quick.so /home/kkvyz1/Qt5.14.2/5.14.2/gcc_64/lib/libQt5Gui.so /home/kkvyz1/Qt5.14.2/5.14.2/gcc_64/lib/libQt5QmlModels.so /home/kkvyz1/Qt5.14.2/5.14.2/gcc_64/lib/libQt5Qml.so /home/kkvyz1/Qt5.14.2/5.14.2/gcc_64/lib/libQt5Network.so /home/kkvyz1/Qt5.14.2/5.14.2/gcc_64/lib/libQt5Core.so -lGL -lpthread

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

                        1 Reply Last reply Reply Quote 1
                        • S
                          sberkantgulen last edited by

                          @jsulm said in error : undefined reference to `qt_resourceFeatureZlib':

                          how you handle the dependencies between your subfolders.

                          My project's pro file like this:

                          TEMPLATE = subdirs
                          
                          SUBDIRS += \
                              DL \
                              BL \
                              PL
                          

                          And other .pro files like this:

                          error4.png

                          How exactly should I make a change?
                          Also this project works when I auto-install with 5.9.

                          jsulm 1 Reply Last reply Reply Quote 0
                          • jsulm
                            jsulm Lifetime Qt Champion @sberkantgulen last edited by

                            @sberkantgulen Take a look at https://doc.qt.io/qt-5/qmake-variable-reference.html#subdirs, especially the *.depends part. You need to specify the dependencies between your subdirs.

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

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                            • S
                              sberkantgulen last edited by

                              Thank you, I will do some more research on these issues.

                              But i still can not understand. Everything works when i use cmd.
                              If there is a problem about dependencies how project works on Qt 5.9 ?

                              What is the difference between offline installation and command line installation ?
                              I can not understand. Qt 5.12 and Qt 5.14 give me error..

                              jsulm 1 Reply Last reply Reply Quote 0
                              • jsulm
                                jsulm Lifetime Qt Champion @sberkantgulen last edited by

                                @sberkantgulen I don't know why it works with Qt 5.9, maybe that version handles build folders with subdirs projects differently than newer version and you were simply lucky.

                                "What is the difference between offline installation and command line installation ?" - I guess by "command line installation" you mean installing using apt? Using apt you install Qt built and packaged by your Linux distribution. If you use offline/online installer you use official Qt builds from Qt Company.

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

                                1 Reply Last reply Reply Quote 0
                                • S
                                  sberkantgulen last edited by sberkantgulen

                                  Yes, i mean when i install from terminal with command:

                                  sudo apt-get install qt5-default   
                                  

                                  It installs Qt 5.9.5.
                                  And everything is okey. For example i can run qtcreator from terminal with:

                                  sudo ./qtcreator
                                  

                                  But, when i install qt with offline installer i can't do same things.
                                  Terminal can not find qtcreator when i run:

                                  sudo ./qtcreator
                                  

                                  I thought there might be a problem with the paths. But no matter what I did, I couldn't solve it.

                                  jsulm 1 Reply Last reply Reply Quote 0
                                  • jsulm
                                    jsulm Lifetime Qt Champion @sberkantgulen last edited by

                                    @sberkantgulen said in error : undefined reference to `qt_resourceFeatureZlib':

                                    sudo ./qtcreator

                                    Why do you start QtCreator with sudo?! This is not needed at all!

                                    To start QtCreator installed using offline/online installer you simply have to use absolute path. On my machine it is:

                                    ~/Qt/Tools/QtCreator/bin/qtcreator
                                    

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

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                                    • S
                                      sberkantgulen last edited by

                                      Yes, i mean;

                                      Maybe problem can be about file association . I wanted to point this out .
                                      It's like it can't see the libraries and therefore cannot mount sub-directories.
                                      AM i wrong?

                                      jsulm 1 Reply Last reply Reply Quote 0
                                      • jsulm
                                        jsulm Lifetime Qt Champion @sberkantgulen last edited by

                                        @sberkantgulen Not sure what you mean. QtCreator has nothing to do with building of your app (you can build in a terminal without QtCreator). Also, nothing is mounted. The problem is that linker can't find the libraries. That means those libraries are not located in the folders you pass to the linker (like here: -L/home/kkvyz1/Desktop/dQGCS/dev/build-YKI-Desktop_Qt_5_14_2_GCC_64bit-Debug/PL/../DL). So, I suggest you really take a look at the link I gave you and define the dependencies between your subfolders properly.

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

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                                        • S
                                          sberkantgulen last edited by sberkantgulen

                                          I mean, my problem can be like this topic:
                                          https://forum.qt.io/topic/107933/undefined-reference-to-qt_resourcefeaturezlib

                                          And i don't know how can i change libraries.

                                          jsulm 1 Reply Last reply Reply Quote 0
                                          • jsulm
                                            jsulm Lifetime Qt Champion @sberkantgulen last edited by

                                            @sberkantgulen The problem from your last compile log has nothing to do with resourcefeaturezlib...

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

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