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Cannot find -lQtMultimedia

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  • V Offline
    V Offline
    vsorokin
    wrote on last edited by
    #2

    What do operation system you use? Version of Qt? And, please, show your .pro file.

    --
    Vasiliy

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    • N Offline
      N Offline
      Naouali
      wrote on last edited by
      #3

      Qt version :4.7.1 on linux system (ubuntu 10.10)
      this is the .pro file
      @#-------------------------------------------------

      Project created by QtCreator 2011-04-20T10:11:14

      #-------------------------------------------------

      QT += core

      QT -= gui
      QT +=multimedia

      TARGET = audiotest
      CONFIG += console
      CONFIG -= app_bundle

      TEMPLATE = app
      target.path=/usr/local/bin
      INSTALLS=target

      INCLUDEPATH +=/home/aladin/QtSDK/Desktop/Qt/473/gcc/include/QtMultimedia/
      INCLUDEPATH +=/home/aladin/QtSDK/Desktop/Qt/473/gcc/include/
      LIBS +=/home/aladin/QtSDK/QtCreator/lib/qtcreator/libQtMultimedia.so

      SOURCES += main.cpp
      audio.cpp

      HEADERS +=
      audio.h@

      i added this lines :
      1-QT +=multimedia
      2-INCLUDEPATH +=/home/aladin/QtSDK/Desktop/Qt/473/gcc/include/QtMultimedia/
      3-INCLUDEPATH +=/home/aladin/QtSDK/Desktop/Qt/473/gcc/include/
      4-LIBS +=/home/aladin/QtSDK/QtCreator/lib/qtcreator/libQtMultimedia.so

      after i commented line (1) and add .4 for the line (4) but this time i get a new error :
      /home/aladin/Projects/Qt/audiotest-build-desktop/audiotest: error while loading shared libraries: libQtMultimedia.so.4: cannot open shared object file: No such file or directory

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      • V Offline
        V Offline
        vsorokin
        wrote on last edited by
        #4

        bq. INCLUDEPATH +=/home/aladin/QtSDK/Desktop/Qt/473/gcc/include/QtMultimedia/
        INCLUDEPATH +=/home/aladin/QtSDK/Desktop/Qt/473/gcc/include/
        LIBS +=/home/aladin/QtSDK/QtCreator/lib/qtcreator/libQtMultimedia.so

        Not needed lines.

        --
        Vasiliy

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        • N Offline
          N Offline
          Naouali
          wrote on last edited by
          #5

          without line 2 and 3 i m not even to compile the program , and the compiler didn't recognize QAudioInput and QAudioFormat

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          • S Offline
            S Offline
            Smar
            wrote on last edited by
            #6

            Ubuntu doesn’t have qt-multimedia anymore.

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            • V Offline
              V Offline
              vsorokin
              wrote on last edited by
              #7

              Ok remove only this line:
              LIBS +=/home/aladin/QtSDK/QtCreator/lib/qtcreator/libQtMultimedia.so

              --
              Vasiliy

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              • N Offline
                N Offline
                Naouali
                wrote on last edited by
                #8

                [quote author="Smar" date="1303308632"]Ubuntu doesn’t have qt-multimedia anymore.[/quote]

                so what should i do ? is there a solution to install it in ubuntu 10.10 ?

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                • S Offline
                  S Offline
                  Smar
                  wrote on last edited by
                  #9

                  I have no idea why Ubuntu guys did that, but you can use qt-mobility’s qt-multimedia(it is the real multimedia package that will be in Qt 4.8 or so instead of that dummy one that’s in 4.6 and 4.7).

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                  • N Offline
                    N Offline
                    Naouali
                    wrote on last edited by
                    #10

                    I installed the qt-mobility and still get the same error or is there new class to use ?

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                    • S Offline
                      S Offline
                      Smar
                      wrote on last edited by
                      #11

                      It is most likely in different package; you need to include it with QT += multimedia... Really, read its documentation, the forum is not substitute to doc. http://doc.qt.nokia.com/qtmobility-1.1/index.html

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                      • J Offline
                        J Offline
                        JohanC
                        wrote on last edited by
                        #12

                        I also got crazy with this error, and the documentation really didn't help.
                        Combining serveral posts on other forums, and with trial and error, I needed following steps to get the multimedia compiling and running again under Ubuntu.
                        (In the .pro file)
                        QT += mobility multimediakit
                        CONFIG += mobility
                        MOBILITY = multimedia
                        ... and also remove the QT += multimedia

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                        • J Offline
                          J Offline
                          JohanC
                          wrote on last edited by
                          #13

                          Oops. And also add

                          INCLUDEPATH += /usr/include/QtMobility
                          INCLUDEPATH += /usr/include/QtMultimediaKit

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