GNU Radio v3.7.
packets from your packet manager:
sudo apt-get install cmake libboost-all-dev liblog4cpp5-dev swig
mkdir build
cd build
cmake ..
make
sudo make install
sudo ldconfig
open apps/rds_rx.grc example flow graph in GNU Radio Companion.
Quick example: http://www.youtube.com/watch?v=05i9C5lhorY
HAK5 episode (including installation): http://www.youtube.com/watch?v=ukhrIl4JHbw
Continuation of gr-rds on BitBucket (originally from Dimitrios Symeonidis https://bitbucket.org/azimout/gr-rds/ and also on CGRAN https://www.cgran.org/wiki/RDS).