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 the types of cross-development SDKs

The Yocto Project can generate two types of cross-development SDKs that aim to cover different needs. They are defined as follows:

  • Standard SDK: This provides the artifacts for application development, be it for bootloader or Linux kernel development, or some other user space software
  • Extensible SDK: This allows the installation of extra packages inside the SDK’s sysroot directory, as well as recipe and application integration inside a Yocto Project-controlled environment

The Standard SDK includes a toolchain and debugging applications. Its goal is to allow users to generate binaries for use in the target. The Extensible SDK is more powerful and can build images and recipes. A notable difference between the two types of SDK is the presence of devtool in the Extensible SDK.

devtool is responsible for providing the additional features of the Extensible SDK. It is an interface for using BitBake and recipetool...