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Felix Moessbauer 102c4667d1 forward build-concurrency related env vars
This patch forwards environment variables to control the concurrency and
parallelism of the build to bitbake.
With that, the user can reduce the concurrency in case of running short
on memory. Further, by reducing the concurrency on very large and NUMA
machines, the build sometimes can be significantly speed up.

Signed-off-by: Felix Moessbauer <felix.moessbauer@siemens.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2022-10-19 11:02:17 +02:00
.github Dockerfile: Rework generation of kas images 2022-08-26 14:34:37 +02:00
contrib Dockerfile: Carry oe-git-proxy locally 2021-08-30 21:56:04 +02:00
docs forward build-concurrency related env vars 2022-10-19 11:02:17 +02:00
image-tests image-tests: Update to recent Yocto and Isar revisions 2022-08-26 15:12:20 +02:00
kas forward build-concurrency related env vars 2022-10-19 11:02:17 +02:00
scripts scripts: Switch release script to twine 2022-08-05 13:39:35 +02:00
tests tests: Fix style warnings around assert usage 2022-08-04 19:09:12 +02:00
.dockerignore .dockerignore: Update 2022-08-26 14:39:41 +02:00
.flake8 flake8: Ignore obsolete warning W503 2020-11-13 20:54:20 +01:00
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.readthedocs.yaml readthedocs: Add configuration file 2021-11-22 19:20:14 +01:00
CHANGELOG.md Release 3.1 2022-08-05 13:17:58 +02:00
container-entrypoint container-entrypoint: Address shellcheck findings 2022-01-11 15:04:47 +01:00
CONTRIBUTING.md CONTRIBUTING: Drop reference to non-existing maintainer list 2020-12-17 18:13:19 +01:00
Dockerfile Dockerfile: avoid deploy the python pip cache 2022-10-14 11:51:48 +02:00
kas-container forward build-concurrency related env vars 2022-10-19 11:02:17 +02:00
kas-docker rename kas-docker to kas-container, leave symlink in place 2020-09-29 08:30:10 +02:00
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setup.py setup.py: bundle kas-container script 2022-03-29 09:24:37 +02:00

Setup tool for bitbake based projects
=====================================

+--------------------+
|    Build Status    |
+====================+
| |workflow-master|_ |
+--------------------+
| |workflow-next|_   |
+--------------------+

.. |workflow-master| image:: https://github.com/siemens/kas/workflows/master/badge.svg
.. _workflow-master: https://github.com/siemens/kas/actions?query=workflow%3Amaster
.. |workflow-next| image:: https://github.com/siemens/kas/workflows/next/badge.svg
.. _workflow-next: https://github.com/siemens/kas/actions?query=workflow%3Anext

This tool provides an easy mechanism to setup bitbake based
projects.

The OpenEmbedded tooling support starts at step 2 with bitbake. The
downloading of sources and then configuration has to be done by
hand. Usually, this is explained in a README. Instead kas is using a
project configuration file and does the download and configuration
phase.

Key features provided by the build tool:

- clone and checkout bitbake layers
- create default bitbake settings (machine, arch, ...)
- launch minimal build environment, reducing risk of host contamination
- initiate bitbake build process

See the `kas documentation <https://kas.readthedocs.io>`_ for further details.