Installing Gnuradio on Ubuntu
on Ubuntu version 14.04 LTS 'Trusty'
A recipe for all the main SDRs.
sudo add-apt-repository ppa:gqrx/snapshots sudo apt-get update sudo apt-get dist-upgrade sudo apt-get install gqrx gnuradio gr-osmosdr hackrf uhd-host
This will install gnuradio, gnuradio-companion, gqrx as main programs and support for HackRF, USRP.
Before you go and build your own radio in grc (gnuradio-companion) you should check with 'gqrx' if the gnuradio installation is working.
If it does not work
Check if old gnuradio installations exist in /usr/local and remove them.