How to Include external library on cross-compiling devices?

[cxam]

Hi, I'm actually facing a problem in which I can't add a external library to my Cross-Compiled raspberry pi Project. I'm actually attempting to do it by adding the library to the qt project on qt and setting the files on the project directory. Unfortunately the files don't transfer from my PC to the raspberry pi 2 when I try to compile. I'm not sure if I know how does this process works but anyways thanks in advance :)

[SGaist]

Hi,

Where did you get this library from in the first place ?