[Paraview-developers] vtable Build Errors in implementing a custom chart

[Utkarsh Ayachit]

Ensure that you preprocess your headers with moc using the
QT4_WRAP_CPP() macros (look at
ParaView/Plugins/SurfaceLIC/CMakeLists.txt for example).

Utkarsh


On Tue, Jun 28, 2011 at 11:14 AM, Scott Mandry <scott_mandry at hotmail.com> wrote:
>
> Hi ParaViewers,
>
> I'm developing a custom chart module, based upon the XYChart module.  I have made a duplicate set
> of source files where the names are changed from e.g. *XYChart*.* into *MyChart*.*, and similarly
> renamed the classes.  I've also made a new Qt module for the chart's Display Panel.
>
> Source files that are dependent on the XYChart, I have added a dependency to the new MyChart Chart,
> and tweaked the code accordingly; and adapted the relevant CMakeLists.txt files to recognise the new
> source files.
>
> However, on building, I get this error to do with vtables:
>
> ...
> [100%] Building CXX object MyProject/CMakeFiles/Myproject-real.dir/qrc_MyProject_help.cxx.o
> Linking CXX executable ../../../bin/MyProject
> ../../../bin/libpqComponents.so: undefined reference to `vtable for pqMyChartDisplayPanel'
> ../../../bin/libpqCore.so: undefined reference to `pqMyChartView::pqMyChartView(QString const&, QString const&, vtkSMContextViewProxy*, pqServer*, QObject*)'
> ../../../bin/libpqComponents.so: undefined reference to `vtable for pqMyChartOptionsEditor'
> ../../../bin/libpqComponents.so: undefined reference to `pqMyChartView::staticMetaObject'
> ../../../bin/libpqComponents.so: undefined reference to `vtable for pqActiveMyChartOptions'
> ../../../bin/libvtkCharts.so.pv0.0: undefined reference to `vtkInstantiatorvtkMyPlotStackedNew()'
> ../../../bin/libvtkChartsCS.so: undefined reference to `vtkMyPlotStacked_Init(vtkClientServerInterpreter*)'
> collect2: ld returned 1 exit status
> make[3]: *** [bin/MyProject] Error 1
> make[2]: *** [MyProject/CMakeFiles/MyProject-real.dir/all] Error 2
> make[1]: *** [MyProject/CMakeFiles/MyProject.dir/rule] Error 2
> make: *** [myProject] Error 2
>
>
> Any suggestions would be appreciated.
>
> Many thanks,
>
>  - Scott Mandry
>
>
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