I forgot to answer your question.
These were the commands I used to install GNU Radio along with gr-baz and OP25.
mkdir -p ~/sdr cd ~/sdr wget
http://www.sbrac.org/files/build-gnuradio chmod a+x
build-gnuradio ./build-gnuradio --verbose sudo apt-get install libitpp8 libitpp-dev
libarmadillo-dev libcppunit-dev libpcap0.8 libpcap0.8-dev libarmadillo4 cd ~/sdr git clone
https://github.com/balint256/gr-baz.git cd gr-baz mkdir build cd build cmake .. make sudo
make install sudo ldconfig cd ~/sdr git clone
https://github.com/balint256/op25 cd op25
mkdir build cd build cmake .. make sudo make install sudo ldconfig