Fiona Klute (WIWA) d142844ce3 package/docker-engine: depend on cgroup v2 and kernel >=5.2 without systemd
Without systemd package/docker-engine requires another way to mount
/sys/fs/cgroup, so far provided by BR2_PACKAGE_CGROUPFS_MOUNT for
cgroup v1. Replace this with BR2_PACKAGE_CGROUPFS_V2_MOUNT for cgroup
v2 support. 5.2 is the minimum recommended version for cgroup v2
support according to the Docker documentation: "v4.15 or later (v5.2
or later is recommended)" [1].

Depending on the selected container runtime users may need to adjust
kernel configurations to enable options required by that runtime with
cgroup v2 (e.g. CONFIG_CGROUP_BPF for runc).

Propagate dependencies accordingly: The Docker btrfs filesystem driver
does not need a separate and lower minimum headers version,
package/mender-update-modules needs to apply the new "depends on".

[1] https://docs.docker.com/engine/containers/runmetrics/#running-docker-on-cgroup-v2

Signed-off-by: Fiona Klute (WIWA) <fiona.klute@gmx.de>
Signed-off-by: Romain Naour <romain.naour@smile.fr>
(cherry picked from commit b07b0bb456)
Signed-off-by: Thomas Perale <thomas.perale@mind.be>
2025-09-18 10:30:57 +02:00
2025-09-07 22:58:34 +02:00
2025-01-15 21:30:31 +01:00
2025-09-07 22:58:34 +02:00
2025-09-07 22:58:34 +02:00

Buildroot is a simple, efficient and easy-to-use tool to generate embedded
Linux systems through cross-compilation.

The documentation can be found in docs/manual. You can generate a text
document with 'make manual-text' and read output/docs/manual/manual.text.
Online documentation can be found at http://buildroot.org/docs.html

To build and use the buildroot stuff, do the following:

1) run 'make menuconfig'
2) select the target architecture and the packages you wish to compile
3) run 'make'
4) wait while it compiles
5) find the kernel, bootloader, root filesystem, etc. in output/images

You do not need to be root to build or run buildroot.  Have fun!

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