[Assist] How can I downgrade GCC?

[Andreas Grapentin]

fwiw, we have an issue that tracks this problem here:
https://labs.parabola.nu/issues/3190

Best,
Andreas

On Tue, Mar 01, 2022 at 04:30:10AM +0000, hironori.ueno wrote:
> Thank you Denis.
> 
> I am using the following versions of the kernel and architecture.
> $ uname -rm
> 5.15.12-gnu-1 x86_64
> 
> I also knew that I needed to get the developers to build
> the kernel with a newer version of GCC.
> 
> However, since it is a rolling release method, I thought that
> the problem was that I updated the GCC package without
> checking it, so I tried to downgrade(and it didn't work)
> Should I contact the kernel package maintainer in such cases?
> 
> ------- Original Message -------
> 
> On Tuesday, March 1st, 2022 at 7:20 AM, Denis 'GNUtoo' Carikli GNUtoo at cyberdimension.org wrote:
> 
> > On Mon, 28 Feb 2022 13:36:01 +0000
> >
> > "hironori.ueno" hironori.ueno at protonmail.com wrote:
> >
> >> Hi,
> >
> > Hi,
> >
> >> I have a problem and please let me know if there is a solution.
> >>
> >> I tried to build a module for dkms and got the following warning:
> >>
> >> ----------------------------
> >>
> >> warning: the compiler differs from the one used to build the kernel
> >>
> >> The kernel was built by: gcc (GCC) 11.1.0
> >>
> >> You are using: gcc (GCC) 11.2.0
> >>
> >> ----------------------------
> >
> > This is probably because we use GCC plugins for building the kernel:
> >
> >> $ grep CONFIG_GCC_PLUGINS abslibre/libre/linux-libre-/config.
> >>
> >> abslibre/libre/linux-libre-64/config.aarch64:CONFIG_GCC_PLUGINS=y
> >>
> >> abslibre/libre/linux-libre-64/config.armv7h:CONFIG_GCC_PLUGINS=y
> >>
> >> abslibre/libre/linux-libre-64/config.i686:CONFIG_GCC_PLUGINS=y
> >>
> >> abslibre/libre/linux-libre-64/config.x86_64:CONFIG_GCC_PLUGINS=y
> >>
> >> abslibre/libre/linux-libre-lts/config.armv7h:CONFIG_GCC_PLUGINS=y
> >>
> >> abslibre/libre/linux-libre-lts/config.i686:CONFIG_GCC_PLUGINS=y
> >>
> >> abslibre/libre/linux-libre-lts/config.x86_64:CONFIG_GCC_PLUGINS=y
> >>
> >> abslibre/libre/linux-libre-pck/config.armv7h:CONFIG_GCC_PLUGINS=y
> >>
> >> abslibre/libre/linux-libre-pck/config.i686:CONFIG_GCC_PLUGINS=y
> >>
> >> abslibre/libre/linux-libre-pck/config.x86_64:CONFIG_GCC_PLUGINS=y
> >
> > The solution is probably to have Parabola developers rebuild the kernels
> >
> > with newer GCCs here.
> >
> > What kernel and Parabola version (i686, armv7h, x86_64) do you use?
> >
> > Denis.

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