Re: [PATCH v1] docs: describe how to quickly build Linux
From: Thorsten Leemhuis
Date: Sat Feb 25 2023 - 04:29:27 EST
On 25.02.23 10:17, Pavel Machek wrote:
>> +If your platform uses techniques like Secure Boot, prepare the system to permit
>> +starting self-compiled Linux kernels; install compilers and everything else
>> +needed for building Linux; make sure to have 15 Gigabyte free space in your home
>> +directory. Now run the following commands to download the sources of Linux,
>> +which you then use to configure, build and install your own
>> kernel::
>
> 15GB is quite a lot. Maybe the shallow clone should be given another
> chance?
It got and made it, see v2:
https://lore.kernel.org/all/8cfcf069d48c1b8d7b83aafe0132f8dad0f1d0ea.1676400947.git.linux@xxxxxxxxxxxxx/
>> + mkdir ~/linux/ ~/linux/sources ~/linux/build
>> + git clone https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git \
>> + ~/linux/sources
>> + cd ~/linux/sources/
>> + # hint: if you don't want to build any stable or longterm kernels, skip the
>> + # next two commands
>> + git remote add linux-stable \
>> + https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
>> + git fetch --all
>> + # hint: if you want to apply patches, do it at this point (see below for details)
>> + # hint: at this point it's recommended to tag your build (see below for details)
>> + yes "" | make O=~/linux/build/ localmodconfig
>> + # hint: at this point you might want or have to adjust the build configuration
>> + # (see below for details)
>> + # note: if you are running a Debian kernel, you'll have to adjust the configuration
>> + # at this point (see below)
>> + make -j $(nproc --all) O=~/linux/build/
>
> Is the complexity of using O= worth it for one-off kernel builds?
That is a good question. I seemed like the right thing to do when I
started writing this guide (maybe just because I've been doing it that
way for ages), but now that you ask I'm unsure myself.
/me wonders how others feel about it
Ciao, Thorsten