Quote Originally Posted by mpita View Post
It's not the right way but, it works in 2 seconds (and worked for me).
2 seconds of wasted time, because he already configured the path ( what also works in 2 seconds ) + a source for having problems in the future.

Instead the missing step should be to configure the environment ( PATH, LD_LIBRARY_PATH ... ), so that the Creator can find the Qwt library, when it is loading the plugin.

Of course Qwt plugin/library need to be compatible with the Creator - that doesn't need be compatible to the Qt version you are trying to build your application with.
So when Creator and Qt installation are incompatibel you need to build and install Qwt twice.

Uwe