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SDK 2.0 QT5 network module

Expert 2730 points

I'm not sure if this is a right place to ask this question.

The problem is if I include network module from Qt5 (libQt5Network.so.5 ; Qt+=network) to my project, my project will get segmentation fault before it even comes to main. I have created just a new console program:

Main:cpp

#include <QCoreApplication>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    return a.exec();
}

If in my .pro file I have 

QT += core network

the application will get segmentation fault before even reaching to main, but without network everything is ok.
I have already checked with ldd that all libraries are found and I have sent the libQt5Network.so.5.5.0 to my target more than once to be sure that it is not damaged.
I found this problem because I got the same effect on my real application and I didn't know what was causing this and then I figured out that it was the networking library. I copied the libQt5 libraries to my target from SDK2.0 tisdk-rootfs-image-am335x-evm.tar.gz. Any suggestions? I guess it needless to say that with the older SDK1.0 I could compile and run my real software with network library (Qt4).

BR
JHi