This is a very simple project (probably the simplest you can find) to get your kick started with clion.
All this application does is say hello - but if you can get it to do that, then your install is working!
If you don't want to use clion or you want to do things manually:
$ git clone https://github.com/pmembrey/hellopolyu.git
$ cd hellopolyu
$ mkdir build
$ cd build
$ cmake -G "Unix Makefiles" ../
$ make
$ ./hellopolyu
Enjoy! :)