Linking to QNX Qt libraries QtQnxCar2, QPps in a project

kaushal98

Would anyone know how to include/use the QNX Qt libraries such as QtQnxCar2, QPPS, QPlayer in a Qt project? I think this involves including a package in Qt or may be linking the library in the .pro file, just can't figure out what it is though.

QNX has lot of documentation about the libraries, but nothing about how to actually include and use them in a Qt project.

I am specifically looking for how to use the Qpps namespace in my project. For example, I've linked the qpps library as below in my .pro file:

LIBS += -L$$PWD/../../../../../home/me/qnx660/target/qnx6/armle-v7/qtcar/lib/ -lqpps
INCLUDEPATH += $$PWD/../../../../../home/me/qnx660/target/qnx6/armle-v7/qtcar
DEPENDPATH += $$PWD/../../../../../home/me/qnx660/target/qnx6/armle-v7/qtcar

But my project still doesn't recognize anything related to qpps.

Toolchain:
Qt Creator 3.3.2
Qt 5.2.0
QNX Car 2.1
QNX SDP 6.6
Ubuntu 14.04

SGaist

Hi and welcome to devnet,

I don't have access to a QNX development environment but what exact error message do your get ?

kaushal98

Thanks SGaist. Hello to you too!

In my .cpp file I've code like this at the beginning:

#include <QDebug>
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QTimer>
using namespace QPps;

And here's the error when I try to build it.

mainwindow.cpp:5:17: error: 'QPps' is not a namespace-name
mainwindow.cpp:5:21: error: expected namespace-name before ';' token
cc: /home/me/qnx660/host/linux/x86/usr/lib/gcc/arm-unknown-nto-qnx6.6.0eabi/4.7.3/cc1plus error 1
make: *** [mainwindow.o] Error 1

SGaist

From your code, you don't include anything that provides the QPps namespace

dcape

Your library paths look correct to me.

Did you try skipping declaring the namespace and create a pps object?
#include <qpps/object.h>
QPps::Object *testObject = new QPps::Object(QStringLiteral("/pps/services/test"), QPps::Object::PublishAndSubscribeMode, false, this);

You should be able to just do LIBS += -lqpps since you are setting the INCLUDEPATH and DEPENDPATH to it's directory.