Learning Yocto¶

Abstract

This document is an effort by Li-Pro.Net — Documentation and aims to improve technical understanding and usage of describe piece of tools and frameworks. In short words: Learning Yocto.

Involved Components

Git – Repo and Manifest
Yocto – Terms and Workflow
Bitbake – Layer and Recipies

Audience

System Architects
Hard- and Software Developers
Integrators and Testers

Status

preliminary (some mature, much in progress)

Version

0.0.0

Release

0.0.0-75-g2094a49

Date

Mar 03, 2021

Authors

Li-Pro.Net — Documentation

Stephan Linz <linz@li-pro.net>

Copyright

License

This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License. For details of the terms and definitions, representations, warranties and disclaimer see the file LICENSE that comes with the documentation and/or read the online version (CC-BY-SA-3.0).

Credits

See the file CREDITS that comes with the documentation for a list of all well known contributors.

Organization

Li-Pro.Net

Contact

info@li-pro.net

Address

Jena, Germany

PREAMBLE

Learning Yocto.

This document introduce to the Yocto framework, their intentions of use and their main focus and area of application. The format of the document is an online presentation, but is also prepared simultaneously as a minimalistic reference guide and covers the following topics:

Domain and Tool Landscape
Concepts, Workflow and Build System
Dive into the deep – coming soon

For easier creation, editing and maintenance, this documentation is written using the reStructuredText syntax and processed using the Sphinx text processor. The presentation and distribution in HTML or PDF formats are only a result of processing with Sphinx from the underlying reStructuredText sources.

Thus, the methodology of “Programmable Documentation” is applied here. A Travis-CI server performs the Sphinx processing. Its results are considered to be official and can be accessed using the following links:

Li-Pro.Net Learning Yocto — LATEST

Prerequisites to readers’ skills

For a better understanding it is necessary that the following terms and methods are known and preferably practiced day by day:

Revision Controll Systems

Git
Subversion
Mercurial
Principals of work
Collaboration work

Configuration and Build Tools

Kconfig + GNU Make
Autotools and CMake
Qmake
Ninja
Source Code Patching
Triad: config → make → install
Canadian Cross: build → host → target

Distribution and Packaging

Debian Packages: *.deb
Red Hat Packages: *.rpm
Open Packages: *.opkg / *.ipkg
System Root: SYSROOT
Destination Directory: DESTDIR
Package Repository (Server)

Scripting

Bash
Python
Perl (rarely)

VERSION HISTORY

Table 2 Document Revisions of “Learning Yocto”¶
Version	Change	Passed	Date
0.0	document skeleton, project created	Stephan Linz	2018-01-22