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)

Managing software licensing with Poky

One important Poky feature is the ability to manage licenses. Most of the time, we only care about our bugs. However, managing licenses and the kinds of licenses used is crucial when creating a product.

Poky keeps track of licenses in every recipe. In addition, it has a strategy to work with proprietary applications during the development cycle.


An important thing to know is that a recipe is released under a specific license and represents a project released under a different license. Therefore, the recipe and the project are two separate entities with specific licenses, so the two licenses must be considered part of the product.

In most recipes, information is a comment containing the copyright, license, and author name; this information pertains to the recipe itself. Then, there is a set of variables to describe the package license, and they are as follows:

  • LICENSE: This describes the license under which the package was...