QAMQP c++ ("forward declaration of class")

Guapo

Hi, I´m using this library QAmqp and I compiled this and their examples are ok. It´s possible to send and receive messages from different terminals.

This library implement a amqp protocol 0.9.1 on RabbitMQ.

I´m trying to use this library as static lib into my app and I put all code inside my project.

When I start the compiler :

#include <QObject>
#include "qamqpglobal.h"

class QAmqpClient;
class QAmqpChannelPrivate;
class QAMQP_EXPORT QAmqpChannel : public QObject
{
    Q_OBJECT
    Q_PROPERTY(int number READ channelNumber CONSTANT)
    Q_PROPERTY(bool open READ isOpen CONSTANT)
    Q_PROPERTY(QString name READ name WRITE setName)

I found this error: "forward declaration of class QAmqpChannerPrivate"

There is no documentation about use this library and I don´t know how to include this library and use it correctly.

Thanks in advance.

SGaist

Hi,

Can you show how you use it ?
Where exactly does the error happen ?

Guapo

SGaist, Let me try...

I copied all the library project to a qamqp directory inside of my project.

My pro file:

PRIVATE_HEADERS += \
    qamqp/src/qamqpchannel_p.h \
    qamqp/src/qamqpchannelhash_p.h \
    qamqp/src/qamqpclient_p.h \
    qamqp/src/qamqpexchange_p.h \
    qamqp/src/qamqpframe_p.h \
    qamqp/src/qamqpmessage_p.h \
    qamqp/src/qamqpqueue_p.h

INSTALL_HEADERS += \
    qamqp/src/qamqpauthenticator.h \
    qamqp/src/qamqpchannel.h \
    qamqp/src/qamqpclient.h \
    qamqp/src/qamqpexchange.h \
    qamqp/src/qamqpglobal.h \
    qamqp/src/qamqpmessage.h \
    qamqp/src/qamqpqueue.h \
    qamqp/src/qamqptable.h

HEADERS += \
    $${INSTALL_HEADERS} \
    $${PRIVATE_HEADERS}

SOURCES += \
    qamqp/src/qamqpauthenticator.cpp \
    qamqp/src/qamqpchannel.cpp \
    qamqp/src/qamqpchannelhash.cpp \
    qamqp/src/qamqpclient.cpp \
    qamqp/src/qamqpexchange.cpp \
    qamqp/src/qamqpframe.cpp \
    qamqp/src/qamqpmessage.cpp \
    qamqp/src/qamqpqueue.cpp \
    qamqp/src/qamqptable.cpp

I have a class called base. I put these methods inside this class:

void Base::start() {
    QObject::connect(&m_client, SIGNAL(connected()), this, SLOT(clientConnected()));
    m_client.connectToHost();
}

void Base::clientConnected() {
    QAmqpExchange *exchange = m_client.createExchange("logs");
    connect(exchange, SIGNAL(declared()), this, SLOT(exchangeDeclared()));
    exchange->declare(QAmqpExchange::FanOut);
}

void Base::exchangeDeclared() {
    QAmqpQueue *temporaryQueue = m_client.createQueue();
    connect(temporaryQueue, SIGNAL(declared()), this, SLOT(queueDeclared()));
    connect(temporaryQueue, SIGNAL(bound()), this, SLOT(queueBound()));
    connect(temporaryQueue, SIGNAL(messageReceived()), this, SLOT(messageReceived()));
    temporaryQueue->declare(QAmqpQueue::Exclusive);
}

void Base::queueDeclared() {
    QAmqpQueue *temporaryQueue = qobject_cast<QAmqpQueue*>(sender());
    if (!temporaryQueue)
        return;

    temporaryQueue->bind("logs", temporaryQueue->name());
}

void Base::queueBound() {
    QAmqpQueue *temporaryQueue = qobject_cast<QAmqpQueue*>(sender());
    if (!temporaryQueue)
        return;

    qDebug() << " [*] Waiting for logs. To exit press CTRL+C";
    temporaryQueue->consume(QAmqpQueue::coNoAck);
}

void Base::messageReceived() {
    QAmqpQueue *temporaryQueue = qobject_cast<QAmqpQueue*>(sender());
    if (!temporaryQueue)
        return;

    QAmqpMessage message = temporaryQueue->dequeue();
    qDebug() << " [x] " << message.payload();
}

0_1551474549100_Captura de tela de 2019-03-01 18-07-46.png

SGaist

Did you first try to compile the library itself before copying it into your own project ?

Guapo

yes...But the lib file was created but not linked with the examples. I need to copy these lib files to example directory to run.

Now, I include this at my pro.

#qamqp

DEPTH = ../qamqp
include($${DEPTH}/qamqp.pri)

INCLUDEPATH += $${QAMQP_INCLUDEPATH}
LIBS += -L$${DEPTH}/src $${QAMQP_LIBS}
macx:CONFIG -= app_bundle

#qamqp

and this is the pri file

QAMQP_VERSION = 0.5.0

isEmpty(QAMQP_LIBRARY_TYPE) {
    QAMQP_LIBRARY_TYPE = shared
}

QT += network
QAMQP_INCLUDEPATH = $${PWD}/src
QAMQP_LIBS = -lqamqp
CONFIG(debug, debug|release){
    #QAMQP_LIBS = -lqamqpd
}
contains(QAMQP_LIBRARY_TYPE, staticlib) {
    DEFINES += QAMQP_STATIC
} else {
    DEFINES += QAMQP_SHARED
    win32:QAMQP_LIBS = -lqamqp0
}

isEmpty(PREFIX) {
    unix {
        PREFIX = /usr
    } else {
        PREFIX = $$[QT_INSTALL_PREFIX]
    }
}
isEmpty(LIBDIR) {
    LIBDIR = lib
}

The compilation is ok, but:

SaborDelivery...
/mnt/midia4/prj/qt/build-SaborDelivery-Desktop_Qt_5_11_1_GCC_64bit-Debug/SaborDelivery: error while loading shared libraries: libqamqp.so.0: cannot open shared object file: No such file or directory

So, I copied these files (libqamqp.so, libqamqp.so.0, libqamqp.so.0.5, libqamqp.so.0.5.0 ) to my build directory and it´s possible to run my app by CLI.

I changed QAMQP_LIBRARY_TYPE from "shared" to "staticlib" without sucess.

SGaist

When using custom libraries, you can set the LD_LIBRARY_PATH to contain the path to where your library of interest is.

Guapo

I set the LD_LIBRARY_PATH and now it´s contain the path.

I created a directory qamqp inside /opt/Qt/5.8/gcc_64/lib/qamqp
I added this line below at the end of my .bashrc :

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$QTDIR/lib/qamqp

Now it´s possible to run my app inside Qt Creator.

So I made a deploy using my deploy script (this script is ok to another project) to make a package.

/opt/Qt/$QTVER/gcc_64/bin/qmake PREFIX=/usr
make -j$(nproc)
unset QTDIR; unset QT_PLUGIN_PATH ; unset LD_LIBRARY_PATH
../linuxdeployqt*.AppImage $1 -bundle-non-qt-libs -qmake=/opt/Qt/$QTVER/gcc_64/bin/qmake 
../linuxdeployqt*.AppImage $1 -appimage -qmake=/opt/Qt/$QTVER/gcc_64/bin/qmake -extra-plugins=/opt/Qt/$QTVER/gcc_64/lib/qamqp
../linuxdeployqt*.AppImage $1 -e -qmake=/opt/Qt/$QTVER/gcc_64/bin/qmake -extra-plugins=/opt/Qt/$QTVER/gcc_64/lib/qamqp

There is an linker error:
ERROR: ldd outputLine: "/mnt/midia4/prj/qt/deploy2/SaborDelivery/SaborDelivery: /opt/Qt/5.8/gcc_64/lib/libQt5Core.so.5: version `Qt_5.11' not found (required by /mnt/midia4/prj/qt/deploy2/SaborDelivery/SaborDelivery)"

this is the ldd Sabordelivery results
SaborDelivery/SaborDelivery: /opt/Qt/5.8/gcc_64/lib/libQt5Core.so.5: version `Qt_5.11' not found (required by SaborDelivery/SaborDelivery)
linux-vdso.so.1 (0x00007ffc4e536000)
libqamqp.so.0 => not found
libQt5PrintSupport.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5PrintSupport.so.5 (0x00007f2549aa6000)
libQt5Widgets.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5Widgets.so.5 (0x00007f2549275000)
libQt5Multimedia.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5Multimedia.so.5 (0x00007f2548f6b000)
libQt5Gui.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5Gui.so.5 (0x00007f25487d0000)
libQt5Sql.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5Sql.so.5 (0x00007f2548589000)
libQt5Xml.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5Xml.so.5 (0x00007f254834f000)
libQt5Network.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5Network.so.5 (0x00007f2547fc9000)
libQt5Core.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5Core.so.5 (0x00007f25478a9000)
libGL.so.1 => /usr/lib/x86_64-linux-gnu/libGL.so.1 (0x00007f254760f000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f25473f2000)
libpulse-mainloop-glib.so.0 => /usr/lib/x86_64-linux-gnu/libpulse-mainloop-glib.so.0 (0x00007f25471ed000)
libpulse.so.0 => /usr/lib/x86_64-linux-gnu/libpulse.so.0 (0x00007f2546f9c000)
libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f2546c8d000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f2546982000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f2546681000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f254646b000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f25460c0000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f2545ea5000)
libicui18n.so.56 => /opt/Qt/5.8/gcc_64/lib/libicui18n.so.56 (0x00007f2545a0c000)
libicuuc.so.56 => /opt/Qt/5.8/gcc_64/lib/libicuuc.so.56 (0x00007f2545654000)
libicudata.so.56 => /opt/Qt/5.8/gcc_64/lib/libicudata.so.56 (0x00007f2543c71000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f2543a6d000)
librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f2543865000)
libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007f2543663000)
/lib64/ld-linux-x86-64.so.2 (0x00007f2549d14000)
libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f254343a000)
libglapi.so.0 => /usr/lib/x86_64-linux-gnu/libglapi.so.0 (0x00007f2543210000)
libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007f2542ffe000)
libXdamage.so.1 => /usr/lib/x86_64-linux-gnu/libXdamage.so.1 (0x00007f2542dfb000)
libXfixes.so.3 => /usr/lib/x86_64-linux-gnu/libXfixes.so.3 (0x00007f2542bf5000)
libX11-xcb.so.1 => /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1 (0x00007f25429f3000)
libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f25426b0000)
libxcb-glx.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-glx.so.0 (0x00007f2542497000)
libxcb-dri2.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-dri2.so.0 (0x00007f2542292000)
libxcb-dri3.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0 (0x00007f254208f000)
libxcb-present.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-present.so.0 (0x00007f2541e8c000)
libxcb-sync.so.1 => /usr/lib/x86_64-linux-gnu/libxcb-sync.so.1 (0x00007f2541c85000)
libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f2541a63000)
libxshmfence.so.1 => /usr/lib/x86_64-linux-gnu/libxshmfence.so.1 (0x00007f2541861000)
libXxf86vm.so.1 => /usr/lib/x86_64-linux-gnu/libXxf86vm.so.1 (0x00007f254165b000)
libdrm.so.2 => /usr/lib/x86_64-linux-gnu/libdrm.so.2 (0x00007f254144e000)
libpulsecommon-5.0.so => /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-5.0.so (0x00007f25411d4000)
libcap.so.2 => /lib/x86_64-linux-gnu/libcap.so.2 (0x00007f2540fcf000)
libjson-c.so.2 => /lib/x86_64-linux-gnu/libjson-c.so.2 (0x00007f2540dc4000)
libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007f2540b7c000)
libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f254090e000)
libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f254070a000)
libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f2540505000)
libICE.so.6 => /usr/lib/x86_64-linux-gnu/libICE.so.6 (0x00007f25402e8000)
libSM.so.6 => /usr/lib/x86_64-linux-gnu/libSM.so.6 (0x00007f25400e0000)
libXtst.so.6 => /usr/lib/x86_64-linux-gnu/libXtst.so.6 (0x00007f253feda000)
libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f253fcb6000)
libwrap.so.0 => /lib/x86_64-linux-gnu/libwrap.so.0 (0x00007f253faab000)
libsndfile.so.1 => /usr/lib/x86_64-linux-gnu/libsndfile.so.1 (0x00007f253f842000)
libasyncns.so.0 => /usr/lib/x86_64-linux-gnu/libasyncns.so.0 (0x00007f253f63c000)
libattr.so.1 => /lib/x86_64-linux-gnu/libattr.so.1 (0x00007f253f437000)
libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f253f232000)
libXi.so.6 => /usr/lib/x86_64-linux-gnu/libXi.so.6 (0x00007f253f021000)
liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f253edfe000)
libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007f253eb1d000)
libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007f253e906000)
libnsl.so.1 => /lib/x86_64-linux-gnu/libnsl.so.1 (0x00007f253e6ee000)
libFLAC.so.8 => /usr/lib/x86_64-linux-gnu/libFLAC.so.8 (0x00007f253e4bb000)
libvorbisenc.so.2 => /usr/lib/x86_64-linux-gnu/libvorbisenc.so.2 (0x00007f253e208000)
libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f253dff6000)
libogg.so.0 => /usr/lib/x86_64-linux-gnu/libogg.so.0 (0x00007f253dded000)
libvorbis.so.0 => /usr/lib/x86_64-linux-gnu/libvorbis.so.0 (0x00007f253dbc1000)

So I copied all the libaqmp files inside /opt/Qt/5.8/gcc_64/lib directory

I made a new compilation.

ldd SaborDelivery/SaborDelivery
SaborDelivery/SaborDelivery: /opt/Qt/5.8/gcc_64/lib/libQt5Core.so.5: version `Qt_5.11' not found (required by SaborDelivery/SaborDelivery)
linux-vdso.so.1 (0x00007fff1d9c8000)
libqamqp.so.0 => /opt/Qt/5.8/gcc_64/lib/libqamqp.so.0 (0x00007fd8a7ae6000)
libQt5PrintSupport.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5PrintSupport.so.5 (0x00007fd8a7878000)
libQt5Widgets.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5Widgets.so.5 (0x00007fd8a7047000)
libQt5Multimedia.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5Multimedia.so.5 (0x00007fd8a6d3d000)
libQt5Gui.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5Gui.so.5 (0x00007fd8a65a2000)
libQt5Sql.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5Sql.so.5 (0x00007fd8a635b000)
libQt5Xml.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5Xml.so.5 (0x00007fd8a6121000)
libQt5Network.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5Network.so.5 (0x00007fd8a5d9b000)
libQt5Core.so.5 => /opt/Qt/5.8/gcc_64/lib/libQt5Core.so.5 (0x00007fd8a567b000)
libGL.so.1 => /usr/lib/x86_64-linux-gnu/libGL.so.1 (0x00007fd8a53e1000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fd8a51c4000)
libpulse-mainloop-glib.so.0 => /usr/lib/x86_64-linux-gnu/libpulse-mainloop-glib.so.0 (0x00007fd8a4fbf000)
libpulse.so.0 => /usr/lib/x86_64-linux-gnu/libpulse.so.0 (0x00007fd8a4d6e000)
libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007fd8a4a5f000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fd8a4754000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fd8a4453000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fd8a423d000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fd8a3e92000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fd8a3c77000)
libicui18n.so.56 => /opt/Qt/5.8/gcc_64/lib/libicui18n.so.56 (0x00007fd8a37de000)
libicuuc.so.56 => /opt/Qt/5.8/gcc_64/lib/libicuuc.so.56 (0x00007fd8a3426000)
libicudata.so.56 => /opt/Qt/5.8/gcc_64/lib/libicudata.so.56 (0x00007fd8a1a43000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fd8a183f000)
librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007fd8a1637000)
libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007fd8a1435000)
/lib64/ld-linux-x86-64.so.2 (0x00007fd8a7d34000)
libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007fd8a120c000)
libglapi.so.0 => /usr/lib/x86_64-linux-gnu/libglapi.so.0 (0x00007fd8a0fe2000)
libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007fd8a0dd0000)
libXdamage.so.1 => /usr/lib/x86_64-linux-gnu/libXdamage.so.1 (0x00007fd8a0bcd000)
libXfixes.so.3 => /usr/lib/x86_64-linux-gnu/libXfixes.so.3 (0x00007fd8a09c7000)
libX11-xcb.so.1 => /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1 (0x00007fd8a07c5000)
libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007fd8a0482000)
libxcb-glx.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-glx.so.0 (0x00007fd8a0269000)
libxcb-dri2.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-dri2.so.0 (0x00007fd8a0064000)
libxcb-dri3.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0 (0x00007fd89fe61000)
libxcb-present.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-present.so.0 (0x00007fd89fc5e000)
libxcb-sync.so.1 => /usr/lib/x86_64-linux-gnu/libxcb-sync.so.1 (0x00007fd89fa57000)
libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007fd89f835000)
libxshmfence.so.1 => /usr/lib/x86_64-linux-gnu/libxshmfence.so.1 (0x00007fd89f633000)
libXxf86vm.so.1 => /usr/lib/x86_64-linux-gnu/libXxf86vm.so.1 (0x00007fd89f42d000)
libdrm.so.2 => /usr/lib/x86_64-linux-gnu/libdrm.so.2 (0x00007fd89f220000)
libpulsecommon-5.0.so => /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-5.0.so (0x00007fd89efa6000)
libcap.so.2 => /lib/x86_64-linux-gnu/libcap.so.2 (0x00007fd89eda1000)
libjson-c.so.2 => /lib/x86_64-linux-gnu/libjson-c.so.2 (0x00007fd89eb96000)
libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007fd89e94e000)
libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007fd89e6e0000)
libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007fd89e4dc000)
libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007fd89e2d7000)
libICE.so.6 => /usr/lib/x86_64-linux-gnu/libICE.so.6 (0x00007fd89e0ba000)
libSM.so.6 => /usr/lib/x86_64-linux-gnu/libSM.so.6 (0x00007fd89deb2000)
libXtst.so.6 => /usr/lib/x86_64-linux-gnu/libXtst.so.6 (0x00007fd89dcac000)
libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007fd89da88000)
libwrap.so.0 => /lib/x86_64-linux-gnu/libwrap.so.0 (0x00007fd89d87d000)
libsndfile.so.1 => /usr/lib/x86_64-linux-gnu/libsndfile.so.1 (0x00007fd89d614000)
libasyncns.so.0 => /usr/lib/x86_64-linux-gnu/libasyncns.so.0 (0x00007fd89d40e000)
libattr.so.1 => /lib/x86_64-linux-gnu/libattr.so.1 (0x00007fd89d209000)
libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007fd89d004000)
libXi.so.6 => /usr/lib/x86_64-linux-gnu/libXi.so.6 (0x00007fd89cdf3000)
liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007fd89cbd0000)
libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007fd89c8ef000)
libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007fd89c6d8000)
libnsl.so.1 => /lib/x86_64-linux-gnu/libnsl.so.1 (0x00007fd89c4c0000)
libFLAC.so.8 => /usr/lib/x86_64-linux-gnu/libFLAC.so.8 (0x00007fd89c28d000)
libvorbisenc.so.2 => /usr/lib/x86_64-linux-gnu/libvorbisenc.so.2 (0x00007fd89bfda000)
libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007fd89bdc8000)
libogg.so.0 => /usr/lib/x86_64-linux-gnu/libogg.so.0 (0x00007fd89bbbf000)
libvorbis.so.0 => /usr/lib/x86_64-linux-gnu/libvorbis.so.0 (0x00007fd89b993000)

and the deploy don´t work.

sirop

@Guapo said in QAMQP c++ ("forward declaration of class"):

SaborDelivery...
/mnt/midia4/prj/qt/build-SaborDelivery-Desktop_Qt_5_11_1_GCC_64bit-Debug/SaborDelivery: error while loading shared libraries: libqamqp.so.0: cannot open shared object file: No such file or directory

So you seem to build a Debug version of your application but you try to use a non-debug version of the library?

Guapo

Hi @sirop,

The libqampq files was generated by CLI:
qmake
make

So I created a libqamqp directory and put these files inside. Qt Creator don ´t link before LD_LIBRARY_PATH was updated. When the LD_LIBRARY_PATH point to my libamqp directory, QT Creator makes a debug and release version.

But the deploy package is not working for this project, because a have another one that works. The difference between these 2 projects are this second uses this new shared lib.

SGaist

The linuxdeployqt project should be handy to help you deploy your application.

Guapo

my compilation in linux is ok, but I need to make this compilation in windows too..

In windows, I´m trying to compile the library qamqp.

It stops at the linker because :

C:/Qt/Tools/mingw530_32/bin/../lib/gcc/i686-w64-mingw32/5.3.0/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lqamqp0

I´m trying Qt Creator or CLI.

In the Linux, I compiled this library and put the files at the lib directory and it´s possible to use this library.

But in windows...

There are a pri file:

isEmpty(QAMQP_LIBRARY_TYPE) {
    QAMQP_LIBRARY_TYPE = shared
}

QT += network
QAMQP_INCLUDEPATH = $${PWD}/src
QAMQP_LIBS = -lqamqp
CONFIG(debug, debug|release){
    QAMQP_LIBS = -lqamqpd
}
contains(QAMQP_LIBRARY_TYPE, staticlib) {
    DEFINES += QAMQP_STATIC
} else {
    DEFINES += QAMQP_SHARED
    win32:QAMQP_LIBS = -lqamqp0
}

isEmpty(PREFIX) {
    unix {
        PREFIX = /usr
    } else {
        PREFIX = $$[QT_INSTALL_PREFIX]
    }
}
isEmpty(LIBDIR) {
    LIBDIR = lib
}

Thanks.

SGaist

Did you build that library on Windows ?

Guapo

I´m trying to do this, but the process stop with "cannot find lqamqp0"

First of all, I was unzip the qamqp project to build this library ( now in windows).

Guapo

It seem that -lqmaqp0 is wrong.

My compilation is ok and my app is running. I will publish all information to use this library before close this post.

SGaist

Do you mean that the library name was wrong ?