Qwt on Ubuntu 14.04 and oscilloscpe example not linking

[teele]

I have a fairly fresh Ubuntu 14.04 and Qt and Qwt from the Ubuntu Software center.

To get Qwt programs compiled, I need to add the Qwt library to project files manually. And the oscillosscope example cannot be linked at all because the Wheel methods are "undefined references".

There may be some version clashes, but I cannot figure them out.

How should you proceed in order to get a smoothly working Qt/Qwt environment on Ubuntu 14.04 so that you can easily compile, link and run the oscilloscope example.

teele

[Uwe]

To get Qwt programs compiled, I need to add the Qwt library to project files manually.

Usually it is a "CONFIG += qwt" like what you have to do, when using a specific Qt module.

Don't know about the Ubuntu packages but you have to look for a file /../features/qwt.prf. If qmake is not already configured to find it you have to do something like this:

qmake -set QMAKEFEATURES /your/qwtpath/features

qmake -set QMAKEFEATURES /your/qwtpath/features

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Even if you are using Ububtu packages it might be worth to read http://qwt.sourceforge.net/qwtinstall.html.

And the oscillosscope example cannot be linked at all because the Wheel methods are "undefined references".

• where is the code of this example from
• which version of Qwt did you install
• how did you try to build the example ( what project file are you using )
  

Uwe