ofxCv Cam Distortion Calibration Example

I’m trying to implement ofxCv camera calibration undistort() in my app but I cannot find where/how to get the .yml file for my specific camera lens. As I understand, there is an app that you can use to generate the file using a checkboard pattern that has to be held to the cam. But I can only find it compiled for Mac, here: https://vimeo.com/22708033 - although it says you can compile for Linux I can’t find the source… can anyone help me? Thanks

I think that the following is the code for that example