Problem using QWT shared library

[klenze]

Hi,


I want to use QWT library to display plots. But I´ve a problem to integrate qwt in my application.
I build the qwt shared library by executing

qmake && make

qmake && make

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.
Afterwards I copied the libs to a subfolder in my project.

This is a snippet of my pro file:

DEPENDPATH  += ../libs/lib/shared
INCLUDEPATH += ../libs/include
LIBS += -L../libs/lib/shared -lqwt -lqwtmathml

DEPENDPATH  += ../libs/lib/shared
INCLUDEPATH += ../libs/include
LIBS += -L../libs/lib/shared -lqwt -lqwtmathml

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and this is a snippet of my source file:

int main(int argc, char **args)
{
 
QwtPlot *plot = new  QwtPlot;
 
    plot->setTitle("Das ist ein Test");
}

int main(int argc, char **args)
{

QwtPlot *plot = new  QwtPlot;

    plot->setTitle("Das ist ein Test");
}

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During compiling I get this error:

../GrindingWheelWearSimulationTool/lib/shared/libqwt.so: undefined reference to `QwtPlot::applyProperties(QString const&)'
../GrindingWheelWearSimulationTool/lib/shared/libqwt.so: undefined reference to `QwtPlot::grabProperties() const'
collect2: ld gab 1 als Ende-Status zurück

../GrindingWheelWearSimulationTool/lib/shared/libqwt.so: undefined reference to `QwtPlot::applyProperties(QString const&)'
../GrindingWheelWearSimulationTool/lib/shared/libqwt.so: undefined reference to `QwtPlot::grabProperties() const'
collect2: ld gab 1 als Ende-Status zurück

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The problem is independant of using the shared or the static library.

How can I solve this error?

Thanks
Micha

[klenze]

Ok, I found a solution.

After adding the library path to LD_LIBRARY_PATH, it works.