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"Qt5GStreamer-1.0 development package not found"

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  • H Offline
    H Offline
    HYKim
    wrote on last edited by HYKim
    #1

    Hi, I want to use qt-gstreamer-1.2.0.
    So I installed qt-gstreamer and open qt-gstreamer example "player.pro" in Qt5.5.1.

    And I tried to build it. But I got the message:
    :-1: error: Qt5GStreamer-1.0 development package not found

    player.pro:

    # This is a qmake project file, provided as an example on how to use qmake with QtGStreamer.

TEMPLATE = app
TARGET = player

# produce nice compilation output
CONFIG += silent

# Tell qmake to use pkg-config to find QtGStreamer.
CONFIG += link_pkgconfig

# Now tell qmake to link to QtGStreamer and also use its include path and Cflags.
contains(QT_VERSION, ^4\\..*) {
  PKGCONFIG += QtGStreamer-1.0 QtGStreamerUi-1.0
}
contains(QT_VERSION, ^5\\..*) {
  PKGCONFIG += Qt5GStreamer-1.0 Qt5GStreamerUi-1.0
  QT += widgets
}

# Recommended if you are using g++ 4.5 or later. Must be removed for other compilers.
#QMAKE_CXXFLAGS += -std=c++0x

# Recommended, to avoid possible issues with the "emit" keyword
# You can otherwise also define QT_NO_EMIT, but notice that this is not a documented Qt macro.
DEFINES += QT_NO_KEYWORDS

# Input
HEADERS += mediaapp.h player.h
SOURCES += main.cpp mediaapp.cpp player.cpp

    Also, I modified environment variables at .bashrc file:
    export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/home/hoyoung/qt-gstreamer/lib/x86_64-linux-gnu/pkgconfig/:home/hoyoung/Qt5.5.1/5.5/gcc_64/lib/pkgconfig/:/usr/lib/x86_64-linux-gnu/pkgconfig/

    export PKG_CONFIG_LIBDIR=$PKG_CONFIG_LIBDIR:/home/hoyoung/qt-gstreamer/lib/x86_64-linux-gnu/pkgconfig/:/home/hoyoung/Qt5.5.1/5.5/gcc_64/lib/pkgconfig/

    I would appreciate any kind of help.

    1 Reply Last reply
    0
    • jsulmJ Offline
      jsulmJ Offline
      jsulm
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Did you install qt-gstreamer-dev package?

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

      H 2 Replies Last reply
      0
      • jsulmJ jsulm

        Did you install qt-gstreamer-dev package?

        H Offline
        H Offline
        HYKim
        wrote on last edited by
        #3

        @jsulm Yes, I installed it:

        sudo apt-get install gstreamer1.0*
        sudo apt-get install libgstreamer1.0*

        1 Reply Last reply
        0
        • jsulmJ jsulm

          Did you install qt-gstreamer-dev package?

          H Offline
          H Offline
          HYKim
          wrote on last edited by
          #4

          @jsulm
          And I also installed qt-gstreamer-1.2.0 at ~/qt-gstreamer

          1 Reply Last reply
          0
          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #5

            Hi,

            Did you tell pkg-config where to find QtGstream .pc files?

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

            H 1 Reply Last reply
            0
            • SGaistS SGaist

              Hi,

              Did you tell pkg-config where to find QtGstream .pc files?

              H Offline
              H Offline
              HYKim
              wrote on last edited by
              #6

              @SGaist
              There are 'Qt5GStreamer-1.0.pc',
              'Qt5GLib-2.0.pc',
              'Qt5GStreamerQuick-1.0.pc',
              'Qt5GstreamerUi-1.0.pc' and
              'Qt5GstreamerUtils-1.0.pc'
              in '/home/hoyoung/qt-gstreamer/lib/x86_64-linux-gnu/pkgconfig/'

              1 Reply Last reply
              0
              • H Offline
                H Offline
                HYKim
                wrote on last edited by
                #7

                I reinstalled Qt5GStreamer.

                'Qt5Gstreamer-1.0.pc' files is now in /usr/local/lib/x86_64-linux/pkgconfig/'.

                I modified my .bashrc file.

                And then, There is not the error message "Qt5GStreamer-1.0 development package not found" any more.

                But other problems appeared. QtCreater couldn't find QGstreamer functions' definition. Like:

                In function `main':
undefined reference to 'QGst::init(int*, char***);
In function `Player::Player(QWidget*)':
undefined reference to `QGst::Ui::VideoWidget::VideoWidget(QWidget*, QFlags<Qt::WindowType>)'
undefined reference to `QGst::Ui::VideoWidget::~VideoWidget()'
.
.
.
                1 Reply Last reply
                0
                • jsulmJ Offline
                  jsulmJ Offline
                  jsulm
                  Lifetime Qt Champion
                  wrote on last edited by
                  #8

                  It's the compiler/linker not QtCreator.
                  You do not link your app against QGStreamer libraries or the linker cannot find them.

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

                  H 1 Reply Last reply
                  0
                  • jsulmJ jsulm

                    It's the compiler/linker not QtCreator.
                    You do not link your app against QGStreamer libraries or the linker cannot find them.

                    H Offline
                    H Offline
                    HYKim
                    wrote on last edited by
                    #9

                    @jsulm Hi, thank you for replying
                    Okay, I understand. the errors are link errors.

                    I searched google constantly, but I didn't find how to fix it.
                    Can you give any idea to sovle it?

                    1 Reply Last reply
                    0
                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #10

                      IIRC you need something like:

                      PKGCONFIG += Qt5GStreamer-1.0 Qt5GLib-2.0

                      If using QtQuick

                      PKGCONFIG += Qt5GStreamerQuick-1.0

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

                      H 1 Reply Last reply
                      1
                      • SGaistS SGaist

                        IIRC you need something like:

                        PKGCONFIG += Qt5GStreamer-1.0 Qt5GLib-2.0

                        If using QtQuick

                        PKGCONFIG += Qt5GStreamerQuick-1.0
                        H Offline
                        H Offline
                        HYKim
                        wrote on last edited by
                        #11

                        @SGaist Thank you but I tried it already

                        Now I'm finding any mistake during install qt gstreamer 1.2.0..

                        1 Reply Last reply
                        0
                        • SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by
                          #12

                          Silly question then, are you sure that the libraries are built for the right architecture ?

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

                          H 1 Reply Last reply
                          0
                          • SGaistS SGaist

                            Silly question then, are you sure that the libraries are built for the right architecture ?

                            H Offline
                            H Offline
                            HYKim
                            wrote on last edited by
                            #13

                            @SGaist I Think "yes".
                            I really don't know why it did it.

                            1 Reply Last reply
                            0
                            • SGaistS Offline
                              SGaistS Offline
                              SGaist
                              Lifetime Qt Champion
                              wrote on last edited by
                              #14

                              Can you check the link line in the compiler output panel to see if the libraries from QtGstreamer are there ?

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

                              H 1 Reply Last reply
                              0
                              • SGaistS SGaist

                                Can you check the link line in the compiler output panel to see if the libraries from QtGstreamer are there ?

                                H Offline
                                H Offline
                                HYKim
                                wrote on last edited by
                                #15

                                @SGaist

                                I checked the compiler output panel, as you said. but I couldn't find the link line.

                                This is Compile Output

                                Run qmake:

                                10:28:45: Running steps for project player...
10:28:45: Starting: "/home/hoyoung/Qt5.5.1/5.5/gcc_64/bin/qmake" /home/hoyoung/qt-gstreamer-1.2.0/examples/player/player.pro -r -spec linux-g++ CONFIG+=debug -Wall
WARNING: /home/hoyoung/Qt5.5.1/5.5/gcc_64/mkspecs/features/qt.prf:101: Excess colon in front of opening brace.
WARNING: /home/hoyoung/Qt5.5.1/5.5/gcc_64/mkspecs/features/qt.prf:244: Excess colon in front of opening brace.
WARNING: /home/hoyoung/Qt5.5.1/5.5/gcc_64/mkspecs/features/qt.prf:255: Excess colon in front of opening brace.
10:28:45: The process "/home/hoyoung/Qt5.5.1/5.5/gcc_64/bin/qmake" exited normally.
10:28:45: Elapsed time: 00:00.

                                Build:

                                10:15:44: Running steps for project player...
10:15:44: Configuration unchanged, skipping qmake step.
10:15:44: Starting: "/usr/bin/make" 
linking player
main.o: In function `main':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/main.cpp:24: undefined reference to `QGst::init(int*, char***)'
player.o: In function `Player::Player(QWidget*)':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:34: undefined reference to `QGst::Ui::VideoWidget::VideoWidget(QWidget*, QFlags<Qt::WindowType>)'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:34: undefined reference to `QGst::Ui::VideoWidget::~VideoWidget()'
player.o: In function `Player::~Player()':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:44: undefined reference to `QGst::Element::setState(QGst::State)'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:45: undefined reference to `QGst::Ui::VideoWidget::stopPipelineWatch()'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:41: undefined reference to `QGst::Ui::VideoWidget::~VideoWidget()'
player.o: In function `Player::setUri(QString const&)':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:59: undefined reference to `QGst::ElementFactory::make(char const*, char const*)'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:62: undefined reference to `QGst::Ui::VideoWidget::watchPipeline(QGlib::RefPointer<QGst::Pipeline> const&)'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:65: undefined reference to `QGst::Pipeline::bus() const'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:66: undefined reference to `QGst::Bus::addSignalWatch()'
player.o: In function `Player::position() const':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:83: undefined reference to `QGst::PositionQuery::create(QGst::Format)'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:84: undefined reference to `QGst::Element::query(QGlib::RefPointer<QGst::Query> const&)'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:85: undefined reference to `QGst::PositionQuery::position() const'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:85: undefined reference to `QGst::ClockTime::toTime() const'
player.o: In function `Player::setPosition(QTime const&)':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:97: undefined reference to `QGst::ClockTime::fromTime(QTime const&)'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:97: undefined reference to `QGst::SeekEvent::create(double, QGst::Format, QFlags<QGst::SeekFlag>, QGst::SeekType, long long, QGst::SeekType, long long)'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:99: undefined reference to `QGst::Element::sendEvent(QGlib::RefPointer<QGst::Event> const&)'
player.o: In function `Player::volume() const':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:109: undefined reference to `QGst::StreamVolume::volume(QGst::StreamVolumeFormat) const'
player.o: In function `Player::setVolume(int)':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:124: undefined reference to `QGst::StreamVolume::setVolume(double, QGst::StreamVolumeFormat)'
player.o: In function `Player::length() const':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:134: undefined reference to `QGst::DurationQuery::create(QGst::Format)'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:135: undefined reference to `QGst::Element::query(QGlib::RefPointer<QGst::Query> const&)'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:136: undefined reference to `QGst::DurationQuery::duration() const'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:136: undefined reference to `QGst::ClockTime::toTime() const'
player.o: In function `Player::state() const':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:144: undefined reference to `QGst::Element::currentState() const'
player.o: In function `Player::play()':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:150: undefined reference to `QGst::Element::setState(QGst::State)'
player.o: In function `Player::pause()':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:157: undefined reference to `QGst::Element::setState(QGst::State)'
player.o: In function `Player::stop()':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:164: undefined reference to `QGst::Element::setState(QGst::State)'
player.o: In function `Player::onBusMessage(QGlib::RefPointer<QGst::Message> const&)':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:175: undefined reference to `QGst::Message::type() const'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:180: undefined reference to `QGst::ErrorMessage::error() const'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:180: undefined reference to `QGlib::operator<<(QDebug, QGlib::Error const&)'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:180: undefined reference to `QGlib::Error::~Error()'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:184: undefined reference to `QGst::Message::source() const'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:180: undefined reference to `QGlib::Error::~Error()'
player.o: In function `Player::handlePipelineStateChange(QGlib::RefPointer<QGst::StateChangedMessage> const&)':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:195: undefined reference to `QGst::StateChangedMessage::newState() const'
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/../player/player.cpp:202: undefined reference to `QGst::StateChangedMessage::oldState() const'
player.o: In function `Player::qt_metacast(char const*)':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/./moc_player.cpp:132: undefined reference to `QGst::Ui::VideoWidget::qt_metacast(char const*)'
player.o: In function `Player::qt_metacall(QMetaObject::Call, int, void**)':
/home/hoyoung/qt-gstreamer-1.2.0/examples/build-player-Desktop_Qt_5_5_1_GCC_64bit-Debug/./moc_player.cpp:137: undefined reference to `QGst::Ui::VideoWidget::qt_metacall(QMetaObject::Call, int, void**)'
player.o: In function `QGlib::ValueImpl<QString>::set(QGlib::Value&, QString const&)':
/usr/local/include/Qt5GStreamer/QGst/../QGlib/value.h:454: undefined reference to `QGlib::Value::setData(QGlib::Type, void const*)'
player.o:(.data.rel.ro+0x0): undefined reference to `QGst::Ui::VideoWidget::staticMetaObject'
player.o: In function `QGlib::Type QGlib::GetType<QGst::Message>()':
/usr/local/include/Qt5GStreamer/QGst/../QGlib/type.h:182: undefined reference to `QGlib::GetTypeImpl<QGst::Message>::operator QGlib::Type()'
player.o: In function `QGlib::Type QGlib::GetType<QGst::StreamVolume>()':
/usr/local/include/Qt5GStreamer/QGst/../QGlib/type.h:182: undefined reference to `QGlib::GetTypeImpl<QGst::StreamVolume>::operator QGlib::Type()'
player.o: In function `bool QGlib::connect<Player, void, QGlib::RefPointer<QGst::Message> const&>(void*, char const*, Player*, void (Player::*)(QGlib::RefPointer<QGst::Message> const&), QFlags<QGlib::ConnectFlag>)':
/usr/local/include/Qt5GStreamer/QGlib/connectimpl.h:197: undefined reference to `QGlib::Private::connect(void*, char const*, QGlib::Quark, void*, QSharedPointer<QGlib::Private::DestroyNotifierIface> const&, unsigned int, QGlib::Private::ClosureDataBase*, QFlags<QGlib::ConnectFlag>)'
player.o: In function `void QGlib::ObjectBase::setProperty<QString>(char const*, QString const&)':
/usr/local/include/Qt5GStreamer/QGst/../QGlib/object.h:108: undefined reference to `QGlib::ObjectBase::findProperty(char const*) const'
/usr/local/include/Qt5GStreamer/QGst/../QGlib/object.h:110: undefined reference to `QGlib::Value::Value()'
/usr/local/include/Qt5GStreamer/QGst/../QGlib/object.h:111: undefined reference to `QGlib::ParamSpec::valueType() const'
/usr/local/include/Qt5GStreamer/QGst/../QGlib/object.h:111: undefined reference to `QGlib::Value::init(QGlib::Type)'
/usr/local/include/Qt5GStreamer/QGst/../QGlib/object.h:113: undefined reference to `QGlib::ObjectBase::setProperty(char const*, QGlib::Value const&)'
/usr/local/include/Qt5GStreamer/QGst/../QGlib/object.h:113: undefined reference to `QGlib::Value::~Value()'
/usr/local/include/Qt5GStreamer/QGst/../QGlib/object.h:113: undefined reference to `QGlib::Value::~Value()'
player.o: In function `QGlib::Private::GetDestroyNotifier<Player, void>::operator QSharedPointer<QGlib::Private::DestroyNotifierIface>()':
/usr/local/include/Qt5GStreamer/QGlib/connect.h:254: undefined reference to `QGlib::Private::QObjectDestroyNotifier::instance()'
player.o: In function `QGlib::Private::IfaceDynamicCastImpl<QGst::Pipeline, QGst::StreamVolume, void>::doCast(_GstStreamVolume*)':
/usr/local/include/Qt5GStreamer/QGst/../QGlib/refpointer.h:408: undefined reference to `QGlib::Type::fromInstance(void*)'
/usr/local/include/Qt5GStreamer/QGst/../QGlib/refpointer.h:408: undefined reference to `QGlib::Type::isA(QGlib::Type) const'
/usr/local/include/Qt5GStreamer/QGst/../QGlib/refpointer.h:410: undefined reference to `QGlib::Private::wrapInterface(QGlib::Type, void*)'
player.o:(.data.rel.ro._ZTV6Player[_ZTV6Player]+0x100): undefined reference to `QGst::Ui::VideoWidget::paintEvent(QPaintEvent*)'
player.o:(.data.rel.ro._ZTIN4QGst7MessageE[_ZTIN4QGst7MessageE]+0x10): undefined reference to `typeinfo for QGst::MiniObject'
player.o:(.data.rel.ro._ZTI6Player[_ZTI6Player]+0x10): undefined reference to `typeinfo for QGst::Ui::VideoWidget'
player.o:(.data.rel.ro._ZTIN4QGst7ElementE[_ZTIN4QGst7ElementE]+0x10): undefined reference to `typeinfo for QGst::Object'
player.o:(.data.rel.ro._ZTIN5QGlib9InterfaceE[_ZTIN5QGlib9InterfaceE]+0x18): undefined reference to `typeinfo for QGlib::ObjectBase'
player.o: In function `QGlib::ValueImpl<QGlib::RefPointer<QGst::Message> >::get(QGlib::Value const&)':
/usr/local/include/Qt5GStreamer/QGst/../QGlib/value.h:388: undefined reference to `QGlib::Value::getData(QGlib::Type, void*) const'
player.o: In function `QGlib::WrapImpl<QGst::Message, void>::wrap(_GstMessage*)':
/usr/local/include/Qt5GStreamer/QGst/miniobject.h:60: undefined reference to `QGst::Private::wrapMiniObject(void*)'
collect2: error: ld returned 1 exit status
make: *** [player] Error 1
10:15:44: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project player (kit: Desktop Qt 5.5.1 GCC 64bit)
When executing step "Make"
10:15:44: Elapsed time: 00:00.

                                I checked the "init.h". and I'm trying to find 'GStreamer' library.

                                a part of "QGst/Init.h":

                                    QTGSTREAMER_EXPORT void init(int *argc, char **argv[]);

    /*! Clean up any resources created by GStreamer in init().
     *
     * It is normally not needed to call this function in a normal application as the resources
     * will automatically be freed when the program terminates. This function is therefore mostly
     * used by testsuites and other memory profiling tools.
     *
     * After this call GStreamer (including this method) should not be used anymore.
     *
     * \note You need to include <QGst/Init> to use this function.
     */
                                1 Reply Last reply
                                0
                                • M Offline
                                  M Offline
                                  Manoj_Sahu
                                  wrote on last edited by
                                  #16

                                  Did anybody got the luck to know the reason for:
                                  "Project ERROR: Package Qt5GStreamerQuick-1.0 not found".

                                  I have installed: qt-gstreamer-dev package
                                  Not working even after manually adding PKG_CONFIG_LIBDIR:
                                  export PKG_CONFIG_LIBDIR=/home/manojsahu/qt-gstreamer-1.2.0/src/QGst/QtGStreamer-1.0.pc.in

                                  I have also added PKGCONFIG alternatively in .pro file like:
                                  PKGCONFIG += Qt5GStreamerQuick-1.0
                                  PKGCONFIG += QtGStreamer-1.0

                                  Can anybody help to resolve this error.
                                  I am trying to compile example in below mentioned link:

                                  https://github.com/detrout/qt-gstreamer/tree/master/examples/qmlplayer

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                                  • SGaistS Offline
                                    SGaistS Offline
                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #17

                                    Hi and welcome to devnet,

                                    It's PKG_CONFIG_PATH that you should modify in order to add new paths to search .pc files.

                                    Where are you calling export ?

                                    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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                                    • M Offline
                                      M Offline
                                      Manoj_Sahu
                                      wrote on last edited by
                                      #18

                                      I am calling export PKG_CONFIG_PATH in my example code directory.

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                                      • SGaistS Offline
                                        SGaistS Offline
                                        SGaist
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #19

                                        Are you opening Qt Creator from that terminal ? If not then it won't use the environment variable since it has only been exported in this terminal.

                                        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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