Book Image

Embedded Linux Development Using Yocto Project - Third Edition

By : Otavio Salvador, Daiane Angolini
Book Image

Embedded Linux Development Using Yocto Project - Third Edition

By: Otavio Salvador, Daiane Angolini

Overview of this book

The Yocto Project is the industry standard for developing dependable embedded Linux projects. It stands out from other frameworks by offering time-efficient development with enhanced reliability and robustness. With Embedded Linux Development Using Yocto Project, you’ll acquire an understanding of Yocto Project tools, helping you perform different Linux-based tasks. You’ll gain a deep understanding of Poky and BitBake, explore practical use cases for building a Linux subsystem project, employ Yocto Project tools available for embedded Linux, and uncover the secrets of SDK, recipe tool, and others. This new edition is aligned with the latest long-term support release of the aforementioned technologies and introduces two new chapters, covering optimal emulation in QEMU for faster product development and best practices. By the end of this book, you’ll be well-equipped to generate and run an image for real hardware boards. You’ll gain hands-on experience in building efficient Linux systems using the Yocto Project.
Table of Contents (20 chapters)

Understanding copyleft

Copyleft is a legal way to use copyright law to maximize rights and express freedom. However, it impacts our products. We must meet all obligations of open source and free software licenses.

When building a Linux distribution, at least two projects are used: the Linux kernel and a compiler. The GNU Compiler Collection (GCC) is still the most commonly used compiler. The Linux kernel uses the General Public License (GPL) v2 license, and the GCC uses the GPLv2, GPLv2.1, and GPLv3 licenses, depending on the project used.

However, a Linux-based system can include virtually all projects available worldwide, in addition to all applications made by the company for its product. So how do we know the number of projects and licenses included, and how do we fulfill copyleft compliance requirements?


This chapter describes how the Yocto Project can help you in this task but be aware that you must know exactly what you need to provide and the possible license...