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could not find qtplatfom plugin eglfs

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  • jsulmJ jsulm

    @Asha said in could not find qtplatfom plugin eglfs:

    i am not using any sd card,i flashed my device...how do i install those

    Install on device? Depends on your OS. But didn't we already discussed this thoroughly? If it's a Debian based Linux then you install packages using "apt". How do you create and update your sysroot?

    A Offline
    A Offline
    Asha
    wrote on last edited by
    #61

    @jsulm I followed the below document ,please go through this one, even he also done with debian,created sysroot....

    here is the link https://forum.qt.io/topic/106912/how-to-copy-cross-compiled-qt-binaries-from-one-computer-to-another/13 in the post 13...click here you will get a one pdf(I followed that one) but he did with vnc plugin(export done vnc only),even i also have that vnc plugin and i tried (exported also)but getting the same issue....

    I am very new to this,(if i asked any foolish questions then sorry)

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    0
    • A Offline
      A Offline
      Asha
      wrote on last edited by
      #62

      Hi,

      I connected ssh,via ssh debian@192.168.7.2

      after this,I am executing the executable

      ./example platform=vnc

      The result is QVncServer created on port 5900

      After this blank screen is showing...

      Any suggestions about this....

      1 Reply Last reply
      0
      • A Offline
        A Offline
        Asha
        wrote on last edited by
        #63

        Hi,
        I tried ,creation and execution of application through command prompt only,

        created directory

        mkdir qws

        cd qws

        vi qws.pro
        TEMPLET=app
        SOURCES=main.cpp

        vi main.cpp
        #include<QApplication>
        #include<QPushButton>
        int main(int argc,char** argv)
        {
        QApplication app(argc,argv);
        QPushButton btn("HI");
        btn.show();
        btn.showMaximized();
        }

        After this gave the command

        qmake

        the output is:

        qmake:could not exec '/usr/lib/x86_64-linux-gnu/qt4/bin/make : No such file or directory

        I am fully confused what going,what is the mistake, i cross compiled the qt5 but its showing about qt4....any ideas ?please

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        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #64

          Always use the full path to the qmake version you want to use.

          Note that your cross-compiles Qt will have qmake built for the host and not the target.

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

          A 2 Replies Last reply
          0
          • SGaistS SGaist

            Always use the full path to the qmake version you want to use.

            Note that your cross-compiles Qt will have qmake built for the host and not the target.

            A Offline
            A Offline
            Asha
            wrote on last edited by
            #65

            @SGaist

            Good morning..

            yes Iused the full path,

            what ever I build and cross compiled ,i am able to run examples in vnc platform...

            but i want to build and cross compile qt with eglfs platform,for that any links?....

            1 Reply Last reply
            0
            • SGaistS SGaist

              Always use the full path to the qmake version you want to use.

              Note that your cross-compiles Qt will have qmake built for the host and not the target.

              A Offline
              A Offline
              Asha
              wrote on last edited by
              #66

              @SGaist Hi,

              I created the drectory,and created the .cpp and .pro file after that tring for qmke but getting "qmake: could not exec '/usr/lib/x86_64-Linux-gnu/qt4/bin/make': No such file or directory.."

              mkdir sample
              cd sample
              vi sample.cpp
              vi sample.pro
              qmake /home/beagle/Qt5/bin/qmake

              Any suggestions please?.......

              jsulmJ 1 Reply Last reply
              0
              • A Asha

                @SGaist Hi,

                I created the drectory,and created the .cpp and .pro file after that tring for qmke but getting "qmake: could not exec '/usr/lib/x86_64-Linux-gnu/qt4/bin/make': No such file or directory.."

                mkdir sample
                cd sample
                vi sample.cpp
                vi sample.pro
                qmake /home/beagle/Qt5/bin/qmake

                Any suggestions please?.......

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

                @Asha said in could not find qtplatfom plugin eglfs:

                Any suggestions please?.......

                "qmake /home/beagle/Qt5/bin/qmake" - what is this line supposed to be?!
                It should be

                /home/beagle/Qt5/bin/qmake
                

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

                A 1 Reply Last reply
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                • jsulmJ jsulm

                  @Asha said in could not find qtplatfom plugin eglfs:

                  Any suggestions please?.......

                  "qmake /home/beagle/Qt5/bin/qmake" - what is this line supposed to be?!
                  It should be

                  /home/beagle/Qt5/bin/qmake
                  
                  A Offline
                  A Offline
                  Asha
                  wrote on last edited by
                  #68

                  @jsulm yes,i gave this one /home/beagle/Qt5/bin/qmake

                  After this i got the makefile,
                  the gave the make

                  after this make getting the error

                  arm-linux-gnueabihf-g++: error : .o No such file or directory
                  Makefile:141: recipe for target 'sample' failed
                  make: ***[sample] Error 1

                  when i list the files ,i got the sample.o file

                  so I copied that obj file in my board using scp,

                  And executing that sample.o file in board,
                  ./sample.o platform=vnc

                  getting the error:

                  -bash: ./sample.o: cannot execute binary file: EXec format error

                  jsulmJ 1 Reply Last reply
                  0
                  • A Asha

                    @jsulm yes,i gave this one /home/beagle/Qt5/bin/qmake

                    After this i got the makefile,
                    the gave the make

                    after this make getting the error

                    arm-linux-gnueabihf-g++: error : .o No such file or directory
                    Makefile:141: recipe for target 'sample' failed
                    make: ***[sample] Error 1

                    when i list the files ,i got the sample.o file

                    so I copied that obj file in my board using scp,

                    And executing that sample.o file in board,
                    ./sample.o platform=vnc

                    getting the error:

                    -bash: ./sample.o: cannot execute binary file: EXec format error

                    jsulmJ Offline
                    jsulmJ Offline
                    jsulm
                    Lifetime Qt Champion
                    wrote on last edited by
                    #69

                    @Asha You can't execute *.o files!
                    Those needs to be linked together to an executable.

                    "arm-linux-gnueabihf-g++: error : .o - please delete everything in your build directory, run qmake again and then build (call make).
                    Also this error message looks strange - there should be actual file name in front of .o

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

                    A 1 Reply Last reply
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                    • jsulmJ jsulm

                      @Asha You can't execute *.o files!
                      Those needs to be linked together to an executable.

                      "arm-linux-gnueabihf-g++: error : .o - please delete everything in your build directory, run qmake again and then build (call make).
                      Also this error message looks strange - there should be actual file name in front of .o

                      A Offline
                      A Offline
                      Asha
                      wrote on last edited by
                      #70

                      @jsulm

                      Those needs to be linked together to an executable.but i am not getting the executable file...

                      getting this
                      arm-linux-gnueabihf-g++: error : .o No such file or directory
                      Makefile:141: recipe for target 'sample' failed
                      make: ***[sample] Error 1

                      .o - please delete everything in your build directory,

                      I am not understood the above line,delete everything in build directory means,I need to delete the Qt5 directory files and directories?

                      jsulmJ 1 Reply Last reply
                      0
                      • A Asha

                        @jsulm

                        Those needs to be linked together to an executable.but i am not getting the executable file...

                        getting this
                        arm-linux-gnueabihf-g++: error : .o No such file or directory
                        Makefile:141: recipe for target 'sample' failed
                        make: ***[sample] Error 1

                        .o - please delete everything in your build directory,

                        I am not understood the above line,delete everything in build directory means,I need to delete the Qt5 directory files and directories?

                        jsulmJ Offline
                        jsulmJ Offline
                        jsulm
                        Lifetime Qt Champion
                        wrote on last edited by
                        #71

                        @Asha said in could not find qtplatfom plugin eglfs:

                        I need to delete the Qt5 directory files and directories?

                        No.
                        What I mean is: delete all build artefacts from previous builds (like *.o files, Makefiles).

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

                        A 1 Reply Last reply
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                        • jsulmJ jsulm

                          @Asha said in could not find qtplatfom plugin eglfs:

                          I need to delete the Qt5 directory files and directories?

                          No.
                          What I mean is: delete all build artefacts from previous builds (like *.o files, Makefiles).

                          A Offline
                          A Offline
                          Asha
                          wrote on last edited by
                          #72

                          @jsulm I deleted the all makefiles and .o files now tring to execute sample.o file but getting the -bash: ./sample.o:cannot execute binary file: Exec format error..

                          "You can't execute *.o files!",Please suggest me where i need to link that .o file(I am not getting any executable file)..

                          jsulmJ 1 Reply Last reply
                          0
                          • A Asha

                            @jsulm I deleted the all makefiles and .o files now tring to execute sample.o file but getting the -bash: ./sample.o:cannot execute binary file: Exec format error..

                            "You can't execute *.o files!",Please suggest me where i need to link that .o file(I am not getting any executable file)..

                            jsulmJ Offline
                            jsulmJ Offline
                            jsulm
                            Lifetime Qt Champion
                            wrote on last edited by
                            #73

                            @Asha said in could not find qtplatfom plugin eglfs:

                            "You can't execute *.o files!",Please suggest me where i need to link that .o file(I am not getting any executable file)..

                            You just need to build again!
                            "I am not getting any executable file" - yes, because your build fails.
                            Before I wrote: please delete everything in your build directory, run qmake again and then build (call make).
                            So again: please run qmake and build.

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

                            A 1 Reply Last reply
                            0
                            • jsulmJ jsulm

                              @Asha said in could not find qtplatfom plugin eglfs:

                              "You can't execute *.o files!",Please suggest me where i need to link that .o file(I am not getting any executable file)..

                              You just need to build again!
                              "I am not getting any executable file" - yes, because your build fails.
                              Before I wrote: please delete everything in your build directory, run qmake again and then build (call make).
                              So again: please run qmake and build.

                              A Offline
                              A Offline
                              Asha
                              wrote on last edited by
                              #74

                              @jsulm

                              Hi,

                              I done once again qmake and make,

                              After make ,I got

                              undefined reference to 'main'
                              collect2: error :ld returned 1 exit status
                              Makefile:137: recipe for target 'sample 'failed'
                              make: *** [sample] Error 1

                              After listing the files,the result is

                              Makefile
                              .qmake.stash
                              sample.cpp
                              sample.pro

                              I am not getting ,what is the problem....

                              jsulmJ 1 Reply Last reply
                              0
                              • A Asha

                                @jsulm

                                Hi,

                                I done once again qmake and make,

                                After make ,I got

                                undefined reference to 'main'
                                collect2: error :ld returned 1 exit status
                                Makefile:137: recipe for target 'sample 'failed'
                                make: *** [sample] Error 1

                                After listing the files,the result is

                                Makefile
                                .qmake.stash
                                sample.cpp
                                sample.pro

                                I am not getting ,what is the problem....

                                jsulmJ Offline
                                jsulmJ Offline
                                jsulm
                                Lifetime Qt Champion
                                wrote on last edited by
                                #75

                                @Asha Does your sample.cpp contain main() function?

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

                                A 1 Reply Last reply
                                0
                                • jsulmJ jsulm

                                  @Asha Does your sample.cpp contain main() function?

                                  A Offline
                                  A Offline
                                  Asha
                                  wrote on last edited by
                                  #76

                                  @jsulm
                                  yes,

                                  #include <QCoreApplication>
                                  #include <QString>
                                  #include <QFile>
                                  #include <QDir>
                                  #include <QTextStream>
                                  #include <QDebug>
                                  int main(int argc, char *argv[])
                                  {
                                  QCoreApplication app(argc, argv);
                                  // prepare the message
                                  QString message("Hello World!");
                                  // prepare a file in the users home directory named out.txt
                                  QFile file(QDir::home().absoluteFilePath("out.txt"));
                                  // try to open the file in write mode
                                  if(!file.open(QIODevice::WriteOnly)) {
                                  qWarning() << "Can not open file with write access";
                                  return -1;
                                  }
                                  // as we handle text we need to use proper text codecs
                                  QTextStream stream(&file);
                                  // write message to file via the text stream
                                  stream << message;
                                  return 0;
                                  }
                                  ~                       
                                  
                                  jsulmJ 1 Reply Last reply
                                  0
                                  • A Asha

                                    @jsulm
                                    yes,

                                    #include <QCoreApplication>
                                    #include <QString>
                                    #include <QFile>
                                    #include <QDir>
                                    #include <QTextStream>
                                    #include <QDebug>
                                    int main(int argc, char *argv[])
                                    {
                                    QCoreApplication app(argc, argv);
                                    // prepare the message
                                    QString message("Hello World!");
                                    // prepare a file in the users home directory named out.txt
                                    QFile file(QDir::home().absoluteFilePath("out.txt"));
                                    // try to open the file in write mode
                                    if(!file.open(QIODevice::WriteOnly)) {
                                    qWarning() << "Can not open file with write access";
                                    return -1;
                                    }
                                    // as we handle text we need to use proper text codecs
                                    QTextStream stream(&file);
                                    // write message to file via the text stream
                                    stream << message;
                                    return 0;
                                    }
                                    ~                       
                                    
                                    jsulmJ Offline
                                    jsulmJ Offline
                                    jsulm
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #77

                                    @Asha Please show your pro file

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

                                    A 1 Reply Last reply
                                    0
                                    • jsulmJ jsulm

                                      @Asha Please show your pro file

                                      A Offline
                                      A Offline
                                      Asha
                                      wrote on last edited by
                                      #78

                                      @jsulm here is my .pro file

                                      Qt += core gui

                                      sources += \ sample.cpp

                                      target.path=/home/debian/Qt5
                                      INSTALLS +=target

                                      jsulmJ 1 Reply Last reply
                                      0
                                      • A Asha

                                        @jsulm here is my .pro file

                                        Qt += core gui

                                        sources += \ sample.cpp

                                        target.path=/home/debian/Qt5
                                        INSTALLS +=target

                                        jsulmJ Offline
                                        jsulmJ Offline
                                        jsulm
                                        Lifetime Qt Champion
                                        wrote on last edited by SGaist
                                        #79

                                        @Asha said in could not find qtplatfom plugin eglfs:

                                        \ sample.cpp

                                        why do you have backslash in front of sample.cpp?
                                        "Qt += core gui" must be "QT += core gui"

                                        [edit: Fixed variable name SGaist]

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

                                        A 1 Reply Last reply
                                        0
                                        • jsulmJ jsulm

                                          @Asha said in could not find qtplatfom plugin eglfs:

                                          \ sample.cpp

                                          why do you have backslash in front of sample.cpp?
                                          "Qt += core gui" must be "QT += core gui"

                                          [edit: Fixed variable name SGaist]

                                          A Offline
                                          A Offline
                                          Asha
                                          wrote on last edited by
                                          #80

                                          @jsulm as you said i followed but getting the same result,

                                          please say me tje .pro file for that .cpp file

                                          1 Reply Last reply
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