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Thread: Qwt-5.3.0-svn: oscilloscope

  1. #1
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    Default Qwt-5.3.0-svn: oscilloscope

    Hi,
    I can't run the example oscilloscope. I get this error message:

    ./oscilloscope: symbol lookup error: ./oscilloscope: undefined symbol: _ZN12QwtPlotCurve7setDataERK13QwtSeriesDataI7QPoin tFE

    What means?

  2. #2
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    Default Re: Qwt-5.3.0-svn: oscilloscope

    Assuming you are on Linux/X11:

    "c++filt _ZN12QwtPlotCurve7setDataERK13QwtSeriesDataI7QPoin tFE"
    QwtPlotCurve::setData(QwtSeriesData<QPointF> const&)

    With "ldd" you can check which Qwt library will be loaded, when you run your application. With "nm /your/path/to/libqwt.so.5 | c++filt" you can see, what is in the library.

    Uwe

  3. #3
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    Default Re: Qwt-5.3.0-svn: oscilloscope

    You right! It tried to use the old qwt-5.2.

    Thanks.

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