I tried to install arm-none-eabi-gdb as a part of gcc-arm-embedded. I added PPA:
sudo add-apt-repository ppa:team-gcc-arm-embedded/ppa
sudo apt install gcc-arm-embedded
It responded with:
Err:8 http://ppa.launchpad.net/team-gcc-arm-embedded/ppa/ubuntu focal Release 404 Not Found [IP: 220.127.116.11 80]
As far as I understand - gcc-arm-embedded doesn't have a version for Ubuntu 20. So I've changed release version for this PPA in Software & Updates to bionic so that I can avoid error 404.
Even though ubuntu 20 has libisl22, now I have unmet dependencies when I try to install gcc-arm-embedded:
The following packages have unmet dependencies: gcc-arm-embedded : Depends: libisl15 (>= 0.15) but it is not installable E: Unable to correct problems, you have held broken packages.
I was unable to find a way to install requested version of libisl, as apt offers only two versions - libisl22 and libisl-dev and both are not accepted by installer.
I need advice on how to install arm-none-eabi-gdb. Thank you!