Another possibility is to use the regular Raspbian image and add the appropriate ppa with a prebuilt gnuradio in it. See this link for more information about that. In short:
Edit /etc/apt/sources.list and add the following line:
deb http://archive.raspbian.org/raspbian jessie main
Then update apt and install gnuradio and gnuradio-dev:
sudo apt-get update && sudo apt-get install gnuradio gnuradio-dev
Installing gqrx + osmocom + related stuff is also recommended:
sudo apt-get install gr-osmosdr libosmosdr-dev gqrx-sdr
That should get you set up for developing with gnuradio, grc and related python things
So far I’ve found 500 ksps is about the maximum samplerate the RPi2 can handle when running gnuradio via Python. It might be possible to go faster, since hackrf_transfer claims a transfer speed of 20 MiB/s is possible (corresponding to 10 Msps).
I’m leaving the compilation guide I already started as-is, despite not getting it to do what I wanted. Perhaps it’ll be useful to someone:
gnuradio requires CMake>=2.8.10 for NEON support, raspbian ships with cmake 2.8.9. Grrmblr. So install that first:
git clone https://cmake.org/cmake.git cd cmake git checkout v2.8.10 ./configure && make -j3 && sudo make install
Three cores are used for make to speed things up (-j3). Four would cause X to hang. Configuring and compiling cmake will take a while, so go grab a coffee, do laundry or somesuch.
Next set up hackrf. I didn’t record this step, but if I recall correctly you need to download, compile and install gr-osmosdr. Something like this:
git clone git://git.osmocom.org/gr-osmosdr cd gr-osmosdr mkdir build cd build cmake .. make -j3 sudo make install
You can check that you got it right by running hackrf_info, then hackrf_transfer -c 127 -f 433960000 to check that the transmit functionality works (remember to attach an antenna).
Finally it is time to install gnuradio itself. A small note on boost here, since it always tends to be a problem for people stumbling upon guides like this: I’m using version 1.49. At the time of writing the latest version available via apt was 1.50. The latest official version (outside Debian) was 1.60.0.
sudo apt-get install libboost-dev libboost-filesystem-dev \ libboost-system-dev libboost-test-dev \ libboost-program-options-dev python-pip libcppunit-dev \ libfftw3-dev #TODO: gr-fft doesn't build, figure out why sudo pip install cheetah git clone https://github.com/gnuradio/gnuradio.gitcd gnuradio git checkout 72dcbdb #optional, master as of writing git submodule init git submodule update mkdir build cd build cmake .. # For some reason NEON doesn't work, so disable it by in CMakeCache.txt changing the line #have_mfpu_neon:INTERNAL=1 # to #have_mfpu_neon:INTERNAL=0 nano CMakeCache.txt #do the thing make sudo make install
This will build and install.. some parts of gnuradio. Not the Python stuff though, which is what I need. Fffffff-