Re: [PATCH v3 0/2] scripts: introduce containerized builds

[Nicolas Schier <nsc@kernel.org>]

On Wed, Dec 31, 2025 at 05:51:48PM +0100, Guillaume Tucker wrote:
> This proposal emerged from discussions over email and after a talk at
> Plumbers 2024:
> 
>     https://lore.kernel.org/all/affb7aff-dc9b-4263-bbd4-a7965c19ac4e@gtucker.io/
> 
> The aim is to facilitate reproducing builds for CI bots as well as
> developers using containers.  Here's an illustrative example with a
> kernel.org toolchain in a Docker image from tuxmake:
> 
>     $ scripts/container -i tuxmake/korg-clang-21 make LLVM=1 defconfig
>       HOSTCC  scripts/basic/fixdep
>       HOSTCC  scripts/kconfig/conf.o
>     [...]
>       HOSTCC  scripts/kconfig/util.o
>       HOSTLD  scripts/kconfig/conf
>     *** Default configuration is based on 'x86_64_defconfig'
>     #
>     # configuration written to .config
>     #
> 
> This patch series also includes a documentation page with all the
> relevant details and further examples about how to use the tool.
> 
> To go one step further, I'm in the process of preparing reference
> container images with kernel.org toolchains and no third-party
> dependencies other than the base Debian distro.  See this thread for
> more details and options to host them in an upstream way:
> 
>     https://lore.kernel.org/all/cc737636-2a43-4a97-975e-4725733f7ee4@gtucker.io/
> 
> Say, to run KUnit using the latest kernel.org GCC toolchain:
> 
>     scripts/container --shell \
>         -i registry.gitlab.com/gtucker/korg-containers/gcc:kunit -- \
>         tools/testing/kunit/kunit.py \
>             run \
>             --arch=x86_64 \
>             --cross_compile=x86_64-linux-
> 
> ---
> Changes in v3:
> - Refactor common code for Docker and Podman
> - Add docs.kernel.org URL in help message
> - Use pathlib Python package
> - Handle signals in parent process by default
> - Add --shell option to use an interactive shell
> - Tweak debug messages in verbose mode
> - Specify Python 3.10 as minimum version in the docs
> - Provide an example env file in the docs
> - Update docs regarding interactive shell usage
> 
> Changes in v2:
> - Drop default image but make -i option required
> - Look for Docker and Podman if no runtime specified
> - Catch SIGINT from user to abort container with Docker
> - Explicitly name each container with a UUID
> - Update documentation accordingly
> 
> ---
> 
> Guillaume Tucker (2):
>   scripts: add tool to run containerized builds
>   Documentation: dev-tools: add container.rst page
> 
>  Documentation/dev-tools/container.rst | 201 ++++++++++++++++++++++++++
>  Documentation/dev-tools/index.rst     |   1 +
>  scripts/container                     | 199 +++++++++++++++++++++++++
>  3 files changed, 401 insertions(+)
>  create mode 100644 Documentation/dev-tools/container.rst
>  create mode 100755 scripts/container
> 
> -- 
> 2.47.3
> 
> 

Out-of-source builds do not work on my system with podman.  If this is
expected, I think it would be great to mention that somewhere in the
documentation.


Nevertheless, thanks a lot!  I expect me to use that a lot in the
future!

For the whole patch set:
Tested-by: Nicolas Schier <nsc@kernel.org>
Acked-by: Nicolas Schier <nsc@kernel.org>

Kind regards,
Nicolas


-- 
Nicolas