Re: [gentoo-user] Inquiry about gentoo kernel configuration

[Ramon Fischer]

Yes, but the image does not need to be up-to-date, since you only use it temporarily; everything else is done in a chroot environment. One thing to mention, though: The LiveDVD can be booted from UEFI, which you will need to finalise[2] the Gentoo installation on a UEFI system.

-Ramon

[1] https://wiki.gentoo.org/wiki/Handbook:AMD64/Full/Installation

As William already mentioned, you can boot from almost any Linux live media and install Gentoo[1] from there. [2] See important note: https://wiki.gentoo.org/wiki/Handbook:AMD64/Full/Installation#Booting_the_installation_media

On 11/07/2021 15:11, Dongliang Mu wrote:

On Sun, Jul 11, 2021 at 1:23 AM Ramon Fischer <ramon_fisc...@hotmail.de> wrote:

In addition to this:

I did some further research about this, since I actually never thought
about getting the Kernel sources without having an installed Gentoo system:

You may take a look at one of the HTTP mirrors[1], preferably one in
your country and navigate to "/releases/<cpu_architecture>/". There you
will find a Live DVD image - "livedvd-amd64-multilib-20160704.iso" for
example - from which you could boot from; either virtually in VirtualBox
or other virtualisation solutions or directly from hardware.

Click on "Login" to login and get the Kernel sources from
"/usr/src/linux/.config".

Thanks for your effort. But it seems such livecd is not maintained
anymore. The latest version is 20170118 [1], right?

[1] http://mirrors.kernel.org/gentoo/releases/amd64/20170118/

-Ramon

[1] https://www.gentoo.org/downloads/mirrors/

On 10/07/2021 14:24, William Kenworthy wrote:

On 10/7/21 7:40 pm, Ramon Fischer wrote:

Hello Dongliang,

you could retrieve kernel configuration files from a "Minimal
Installation CD"[1] of Gentoo. Mount it and look for
"/boot/gentoo-config".

But I guess, you want a untouched version, don't you?

-Ramon

Hi, to expand on this - Gentoo doesn't really have a standardised kernel
config - the nearest to that is the above install CD, or the default
generic catchall "genkernel" one - most people seem to manually
configurate and tune/customise a .config and then copy it from system to
system.  There are a few bin(ary) kernels in portage/sys-kernel/* that
might work for you but I have never tried them.

You can boot almost any linux live media on your target hardware and
extract the config (sysrescuecd is a good one) and use their sources, or
build the kernel using their config on top of Gentoo's vanilla-sources,
or gentoo-sources.

Or grab another distros boot directory (containing the kernel, initrd
and config files), the matching /lib/modules directory and boot that
instead of building your own (I do this often on uboot based arm systems
and raspberry pi's.)

Or ask on the list if someone has a config that matches your target
(occasionally it comes up).

BillK

[1] https://www.gentoo.org/downloads/

On 10/07/2021 11:15, Dongliang Mu wrote:

Hi Gentoo users,

I am a newbie to Gentoo. For Debian, I can get configuration files
from Debian packages. I wonder if possible to get the kernel
configuration files of Gentoo.

If this question is invalid, please let me know.

[1]
http://ftp.debian.org/debian/pool/main/l/linux/linux-config-5.10_5.10.46-1_amd64.deb

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My best regards to you.

        No System Is Safe!
        Dongliang Mu

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