Book Image

Embedded Linux Development with Yocto Project

By : Otavio Salvador
Book Image

Embedded Linux Development with Yocto Project

By: Otavio Salvador

Overview of this book

A practical tutorial guide which introduces you to the basics of Yocto Project, and also helps you with its real hardware use to boost your Embedded Linux-based project. If you are an embedded systems enthusiast and willing to learn about compelling features offered by the Yocto Project, then this book is for you. With prior experience in the embedded Linux domain, you can make the most of this book to efficiently create custom Linux-based systems.
Table of Contents (17 chapters)
15
A. References
16
Index

Understanding the BitBake tool

The BitBake task scheduler started as a fork from Portage, which is the package management system used in the Gentoo distribution. However, nowadays the two projects have diverged a lot due to the different usage focusses. The Yocto Project and the OpenEmbedded Project are the most known and intensive users of BitBake, which remains a separated and independent project with its own development cycle and mailing list ().

As presented in Chapter 1, Meeting the Yocto Project, BitBake is a task scheduler that parses Python and the shell script mixed code. The code parsed generates and runs tasks that may have a complex dependency chain, which is scheduled to allow a parallel execution and maximize the use of computational resources. BitBake can be understood as a tool similar to GNU Make in some aspects.

In this chapter, we cover the main aspects of BitBake tool. However, for more in-depth details about the tool, please...