Michael S (already5chosen.delete@this.yahoo.com) on September 20, 2022 2:05 am wrote:
> anon2 (anon.delete@this.anon.com) on September 19, 2022 3:51 pm wrote:
> > Michael S (already5chosen.delete@this.yahoo.com) on September 19, 2022 2:45 pm wrote:
> > > Andrey (andrey.semashev.delete@this.gmail.com) on September 19, 2022 2:08 pm wrote:
> > > > Michael S (already5chosen.delete@this.yahoo.com) on September 19, 2022 10:28 am wrote:
> > > > > I realize that my question is not quite appropriate for RWT forum, but it
> > > > > seems today few knowledgeable posters are bored, so, may be, not too bad.
> > > > >
> > > > > I want to play with new gcc compilers (any variant of 11 and any variant of 12) on Linux. Normally I play
> > > > > with newish gcc on Windows under msys2, but tests I want to run today are specific to system-V AMD64 ABI.
> > > > > The most suitable distro that I have access to right now, on most capable machine with
> > > > > biggest amount of free space on blazing-fast SSD happens to be Debian 11 (Bullseye).
> > > > > Of course I tried to help myself with google, but something is not clicking. All suggestions
> > > > > I see are too complicated to my primitive Linux administration skills.
> > > > > The one way I likely could manage is building from source. But I can't believe that there is no simpler way.
> > > >
> > > > You could try installing g++-11 and g++-12 (not g++ - this would replace your default compiler) from Debian
> > > > 12 Bookworm. But do note that it will still replace some
> > > > gcc libraries with updated versions, which could break
> > > > your system. Take note which packages are replaced with
> > > > the updated ones so that you can later downgrade them
> > > > to restore the system to the previous state.
> > >
> > >
> > > Thank you.
> > > Unfortunately, your advice is yet another example of suggestion that is above my skills level.
> > >
> > > Coming from DOS/Windows background where any compiler is just another application
> > > program, I find a tight coupling between C compiler and operation system, that
> > > is so common in the Unix world, rather hard to comprehend. And to justify.
> > >
> > > > However, if the system is valuable, I would recommend setting
> > > > up a VM or container with Debian 12 or Ubuntu 22.04 (those have both gcc 11 and 12 in stock repos).
> > > >
> > >
> > > The system is not particularly valuable, but the test that I want
> > > to run is also not sufficiently valuable to go that far.
> > >
> > > More and more it seems that compiling from source is the simplest option.
> > > But it's not urgent so I'd wait for more suggestions.
> > >
> >
> > Try add this to /etc/apt/sources.list
> >
> >
> > deb http://deb.debian.org/debian/ unstable main contrib
> > deb-src http://deb.debian.org/debian/ unstable main contrib
> >
> >
> >
> > Then run these
> >
> >
> > apt-get update
> > apt-get -t unstable install gcc-12
> >
>
> Thank you.
> It was simple and pretty close to what I wanted.
>
> So far I observed only one undesirable effect: system-wide
> upgrade of binutils from version 2.35.2 to 2.38.90.
> On this particular experimental installation it is acceptable, but I still wonder
> how can I install newer tools in a way that does not affect "system" at all.
>
>
>

You could try NixOS as it lets you install different versions of packages and declare which one you want prior to use. It's fairly normal linux aside from that.
https://nixos.org/