Linking to libraries

[SixDegrees]

Not a real expert with Windows here, but doesn't QMake expect paths to always use a forward slash as a delimiter?

The error indicates that your library isn't being found.

[Lykurg]

...and if your real path has spaces you have to use $$quote().

[everyourgokul]

Hi
It seems that the library is linked properly,but you are using some function which is not defined.I think you are linking an old version of the mentioned library ,but the included header is from the latest version.and thats y you didnot get any compilation error.