Yocto Project Overviewο
What is the Yocto Project?ο
The Yocto project may be defined as an open source project that enables developers to quickly build a linux based operating system for any CPU architecture. Thus, itβs popularity for single board computers (SBC).
It consistents of
OE-core
Bitbake
A number of OE Layers
Where can I find Documentionο
The core YP documentation can be found
https://docs.yoctoproject.org/
Youβll more than likely only use
YP Terms (for familiarity with a few terms)
What is poky?ο
Poky is a reference distrution that consists of working stable versions
OE-core
Bitbake
A custom reference BSP layer
A reference distribution file (
conf/distro/poky.conf)
Itβs fine to utilize during testing, but not for a production ready linux distribution.
OE (Open Embedded) Layersο
To put it simply
Yocto can be broken up into a series of layers. Each layer contains BitBake recipes, classes, configs, includes, and sometimes python code which is used to build wic system image files. All files are used to generate the final linux distribution. This distro of course runs on your favorite single board computer (SBC).
Layers generally used in every OE project.
openembedded-core/meta (required)
meta-openembedded/meta-oe (not required)
Image source can be found intel yocto project and embedded os curriculum.
What is Bitbake?ο
bitbake is the tool used to parse every layer defined in conf/bblayers.conf
and executes the task/functions defined in recipes contained in each layer.
bitbake source code can be found here