The project I'm working on fails to link properly. It is built with CMAKE. It use to compile & link fine, before the PC got updated(Buntu11.04 to 12.04, installed packages updated as well). The projects VTK is ver 5.8.0.

The err is: undefined reference to QVTKWidget2::QVTKWidget(QWidget*, QGLWidget const*, QFlags) This is a call to VTK/GUISupport/Qt/QVTKWidget2.cxx. From here I'm lost. I don't know which library is missing. i.e. Which lib has the QVTKWidget2 class? How do I find this?

I've tried ldd VTK/build/bin/someLibs.so, but all I'm finding are more *.so libs. Is there a similar cmd that I can use to find out what is in the someCompiled.a files?

ar -t someCompiled.a  

Shows what is in the archive.

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