Refer to package root in CMakeLists.txt

edit

Hi,

I would like to run some custom commands when running catkin_make. In particular, I want to generate python scripts from QT resources and .ui files. How can it be done? How can I refer to files/scripts inside my package? I read the tutorial, but no way to find some good documentation about custom pre/post scripts, neither if catkin exports cmake symbols to refer to the current package source tree.