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Re: How GNURadio3.8.1 on RasperryPi4 ?


From: Marcus Müller
Subject: Re: How GNURadio3.8.1 on RasperryPi4 ?
Date: Sat, 7 Mar 2020 17:45:51 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0

Dear rrrBbert,

the instructions are in fact for GNU Radio 3.8, so not for a previous
version.

Anyway, I'd not recommend building GNU Radio from source, at all, when
there's binary packages available. That's just way harder, and has no
advantages.

Especially, at high cost, avoid building on an embedded system like the
RPi: these are not machines meant for building software. Developers who
target embedded devices compile the software on their PCs and transfer
the binaries to the embedded devices; in fact, building GNU Radio
typically exceeds the RAM you have in an RPi by far, and the poor
device, aside from compiling Megabytes of C++ code, also needs to start
swapping RAM to the incredibly slow medium of SD cards.

So, simply use Raspbian Testing on your Rpi, which simply comes with GNU
Radio 3.8.1-rc1:

sudo apt install gnuradio

and done.

There should be a guide how to update your Raspbian to that, somewhere
(I'm not a Raspbian user myself, so I can't help you). That should be
pretty straightforward, and at the very least, much, much easier than
building GNU Radio from source.

Also, a note on NOOBS/the raspbian, that it installs: Raspbian, for some
reason, has decided that "all RPis are alike", which they really are
not. The older RPi are least-performance 32 bit machines without
acceleration for a lot of things, whereas the RPi 3 and RPi4 are 64 bit
machines with support for accelerated vector math, which GNU Radio
really uses *a lot*. So, Raspbian throws a lot of performance, as far as
I know, by forcing software to run in legacy armhf mode.

Sadly, "real" Debian (which Raspbian is based on) hasn't fully been
ported to the RPi 4 yet, so I don't have a great alternative to updating
your Raspbian from buster to testing yet.

Best regards,
Marcus

On 07.03.20 16:46, Robert Heerekop wrote:
> Dear radio friends,
> 
> Can anyone guide me (a rookie on HelloWorld level) how to install GNU
> Radio Campanion 3.8.1 on Rasperry Pi4?
> 
> If I follow the (currently) most recent RPi NOOBS 3.3.1 the installation
> guides fail (e.g.
> https://wiki.gnuradio.org/index.php/InstallingGRFromSource_on_Raspberry_Pi)
> 
> I’m searching for a few days now, but get stuck because the information
> I can find is only related to previous versions.
> 
> Thanks a lot for getting me and others rookies on track!
> 
> rrrRbert
> 



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