What is the path to Qt, and path to Qt's configure file on Ubuntu

I am following this documentation for deployment. It need me to specify /path/to/Qt and /path/to/Qt/configure. I am unable to find the path to Qt on my machine.

I am using Ubuntu 17 and I installed Qt using apt install qt5-default. Any idea where can I find it on Ubuntu, or how to find it?

EDIT: I found qt5 at /usr/lib/x86_64-linux-gnu/qt5/ but it does not have a configure file.