As I am annoyed by the constant reminder of compiling such a complex piece of software as GNU Radio and associated libraries on the target embedded ARM system (lack of optimization of the binary distribution tuned for the lowest performance target, damaging the mass-storage SD card medium, inefficiency of using a low performance system for a computationally intensive task), we have put together a short documentation on using Buildroot to generate an image supporting GNU Radio including Osmosdr DVB-T source, USRP (libuhd) sources and Pluto-SDR (gr-iio) and yet optimized for the target system: the document is available at
https://github.com/oscimp/PlutoSDR/blob/master/doc/gnuradio_on_RPi.pdf This documentation focuses on the Raspberry Pi{3,4} as it was the topic of the latest discussion, but was tested on the PlutoSDR and Redpitaya Zynq processors (to only name a few of the best known ARM-based platforms we are using). Basically all platforms supported by Buildroot should be applicable (PlutoSDR being obviously the most attractive but the most annoying with its eMMC storage). The practical demonstration (0-MQ streaming of broadcast FM from target to host) is still being fine tuned. Feel free to comment/correct (all but Phil Balister who will tell us how superior Yocto/OpenEmbedded is and start a troll because I would argue in favor of Buildroot ;) JM -- JM Friedt, FEMTO-ST Time & Frequency/SENSeOR, 26 rue de l'Epitaphe, 25000 Besancon, France
