Segmentation Fault error on all Qt examples/demos

[slscripters]

Make sure you are linking (runtime) to the proper versions of Qt libs. But in general you need the embedded release built for your desktop platform - maybe that's the problem in your case. Then you need to build the application with the embedded version and link it against embedded libs. Runtime you need it ran with embedded libs linked in with qfvb display enabled. Of course prior to that you need to have the fb emulator running.

Thanks you've given me another angle to investigate from . But I still have some questions, hope you could answer these too.

1. Should the Qt Embedded compilation suppose to take care of the correct linking of libraries?
2. I've used the Embedded release with the ff. configure options,
* -qt-gfx-qvfb, the graphics driver will be for QVFb, i.e. the virtual framebuffer.
* -qt-kbd-qvfb, the keyboard input will come from the QVFb.
* -qt-mouse-qvfb, the mouse input will come from the QVFb.
* -prefix /usr/local/Trolltech/Qt-qvfb-version, the prefix is used to separate the QVFb version of embedded Qt from the target version.

Did I miss something?

3. How should I make sure Qt Embedded is linking to the correct embedded libs?

Thanks again for your help.

[wysota]

1. Should the Qt Embedded compilation suppose to take care of the correct linking of libraries?

Build time linking - yes. Runtime linking - no.

2. I've used the Embedded release with the ff. configure options,
* -qt-gfx-qvfb, the graphics driver will be for QVFb, i.e. the virtual framebuffer.
* -qt-kbd-qvfb, the keyboard input will come from the QVFb.
* -qt-mouse-qvfb, the mouse input will come from the QVFb.
* -prefix /usr/local/Trolltech/Qt-qvfb-version, the prefix is used to separate the QVFb version of embedded Qt from the target version.

Did I miss something?

I don't know what you want so it's hard to say if you missed something In general you could have run configure without parameters and all would be well too.

3. How should I make sure Qt Embedded is linking to the correct embedded libs?

It's not embedded you should worry about. It's the runtime dynamic linker on your system. "ldd" is a helpful command to use here.

[slscripters]

Hi thanks for your help. I will put this in mind the next time I'll install Qt in other workstations. I added the "-embedded" option and it has fixed the problem.