Re: installing from PPA gnuradio 3.9 under Ubuntu 18.04 : libvolk dependence issue

Christophe,

There are some dependencies I have not yet sorted out in the PPA for Ubuntu 18.04 which is why 3.9 is only readily available for 20.04.  Namely volk - in the cmake for gnuradio, the min version of volk is 2.4.1 which is not packaged for Ubuntu.  The way I have approached volk to this point in the PPA is just backporting the amazing work that @mait does for Debian.  But since Ubuntu (and especially the previous release of Ubuntu) stays a bit behind Debian, it makes it more difficult to just backport packages over.  For volk, 2.4.1 introduced a dependence on libcpufeatures which does not backport directly.  Are you able to have your students work on 20.04?

To get 3.9 packaged for 18.04 I think would require packaging volk (rather than just copying it over) which is possible, just work that I haven't had time to do.

Improving the ability to install GNU Radio through package managers is one of the key areas we want to focus on in the near future (and Ubuntu is a big part of that), so if anyone in the community is interested in getting involved to help out on this front, please let me know!

Thanks,

Josh

On Mon, Feb 22, 2021 at 7:54 AM Christophe Seguinot <christophe.seguinot@orange.fr> wrote:

Hi

I would like for my students to install from PPA, gnuradio 3.9 under Ubuntu 18.04 (I prefer 3.9 which I could use for a longer term, if not possible I will switch to 3.8)

I made this numerous times under Ubuntu 20.04 but get the following issue for Ubuntu 18.04.

From installingGR page

• To access the current released version (3.9), add the gnuradio/gnuradio-releases ppa (removing other gnuradio ppas if already configured)
• $ sudo add-apt-repository ppa:gnuradio/gnuradio-releases

First issue: ppa:gnuradio/gnuradio-master contains 3.9 for focal but 3.8 for bionic . This is not consistent with installingGR page

    3.9.0.0-0~gnuradio~focal-1
    3.8.2.0-0~gnuradio~bionic-1

then switched to ppa:gnuradio/gnuradio-master (also removed ppa:gnuradio/gnuradio-releases)

• sudo add-apt-repository ppa:gnuradio/gnuradio-master
  
• sudo apt-get update

then tried to install 3.9.0.0git~master~14059~bionic

• sudo apt install gnuradio

which yield the second issue

• Depend: libvolk2.2 (>= 2.2.0) uninstallable (message translated from french)

Tried to

• sudo apt install libvolk : not found 

Succeeded in installing libvolk2.3

• sudo apt install libvolk2.3

But sudo apt install gnuradio continue failing

• Depend: libvolk2.2 (>= 2.2.0) uninstallable (message translated from french)

Does anyone know how to install from PPA gnuradio 3.9 under Ubuntu 18.04 ?

regards, Christophe