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  • Book Overview & Buying Embedded Linux Development Using Yocto Project
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Embedded Linux Development Using Yocto Project

Embedded Linux Development Using Yocto Project - Third Edition

By : Otavio Salvador, Daiane Angolini
5 (9)
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Embedded Linux Development Using Yocto Project

Embedded Linux Development Using Yocto Project

5 (9)
By: Otavio Salvador, Daiane Angolini
Buy this Book

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)
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Preface
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Preface
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Who this book is for
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What this book covers
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To get the most out of this book
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Download the color images
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Conventions used
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Get in touch
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Share Your Thoughts
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1
Chapter 1: Meeting the Yocto Project
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Chapter 1: Meeting the Yocto Project
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What is the Yocto Project?
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Delineating the Yocto Project
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The alliance of the OpenEmbedded project and the Yocto Project
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Understanding Poky
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The Yocto Project releases
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Summary
Lock Free Chapter
2
Chapter 2: Baking Our First Poky-Based System
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Chapter 2: Baking Our First Poky-Based System
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Preparing the build host system
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Downloading the Poky source code
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Preparing the build environment
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Knowing the local.conf file
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Building a target image
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Running images in QEMU
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Summary
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Chapter 3: Using Toaster to Bake an Image
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Chapter 3: Using Toaster to Bake an Image
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What is Toaster?
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Installing Toaster
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Starting Toaster
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Building an image for QEMU
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Summary
4
Chapter 4: Meeting the BitBake Tool
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Chapter 4: Meeting the BitBake Tool
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Understanding the BitBake tool
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BitBake metadata collections
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Metadata types
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Summary
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Chapter 5: Grasping the BitBake Tool
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Chapter 5: Grasping the BitBake Tool
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Parsing metadata
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Dependencies
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Preferring and providing recipes
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Fetching the source code
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Optimizing the source code download
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Understanding BitBake’s tasks
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Summary
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Chapter 6: Detailing the Temporary Build Directory
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Chapter 6: Detailing the Temporary Build Directory
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Detailing the build directory
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Constructing the build directory
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Exploring the temporary build directory
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Understanding the work directory
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Understanding the sysroot directories
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Summary
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Chapter 7: Assimilating Packaging Support
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Chapter 7: Assimilating Packaging Support
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Using supported package formats
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Running code during package installation
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Understanding shared state cache
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Explaining package versioning
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Specifying runtime package dependencies
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Using packages to generate a rootfs image
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Package feeds
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Summary
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Chapter 8: Diving into BitBake Metadata
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Chapter 8: Diving into BitBake Metadata
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Understanding BitBake’s metadata
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Summary
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Chapter 9: Developing with the Yocto Project
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Chapter 9: Developing with the Yocto Project
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What is a software development kit?
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Generating a native SDK for on-device development
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Understanding the types of cross-development SDKs
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Using the Standard SDK
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Using the Extensible SDK
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Summary
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Chapter 10: Debugging with the Yocto Project
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Chapter 10: Debugging with the Yocto Project
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Differentiating metadata and application debugging
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Tracking image, package, and SDK contents
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Debugging packaging
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Logging information during task execution
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Debugging metadata variables
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Utilizing a development shell
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Using the GNU Debugger for debugging
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Summary
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Chapter 11: Exploring External Layers
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Chapter 11: Exploring External Layers
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Powering flexibility with layers
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Detailing a layer’s source code
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Adding meta layers
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The Yocto Project layer ecosystem
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Summary
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Chapter 12: Creating Custom Layers
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Chapter 12: Creating Custom Layers
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Making a new layer
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Adding metadata to the layer
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MACHINE_FEATURES versus DISTRO_FEATURES
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Understanding the scope of a variable
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Summary
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Chapter 13: Customizing Existing Recipes
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Chapter 13: Customizing Existing Recipes
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Understanding common use cases
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Adding extra options to recipes based on Autotools
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Applying a patch
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Adding extra files to the existing packages
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Configuration fragments for Kconfig-based projects
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Summary
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Chapter 14: Achieving GPL Compliance
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Chapter 14: Achieving GPL Compliance
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Understanding copyleft
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Managing software licensing with Poky
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Using Poky to achieve copyleft compliance
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Summary
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Chapter 15: Booting Our Custom Embedded Linux
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Chapter 15: Booting Our Custom Embedded Linux
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Discovering the right BSP layer
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Using physical hardware
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BeagleBone Black
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Raspberry Pi 4
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VisionFive
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Taking the next steps
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Summary
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Chapter 16: Speeding Up Product Development through Emulation – QEMU
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Chapter 16: Speeding Up Product Development through Emulation – QEMU
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What is QEMU?
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What are the benefits of using QEMU over hardware?
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When is choosing real hardware preferable?
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Using runqemu capabilities
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Summary
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Chapter 17: Best Practices
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Chapter 17: Best Practices
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Guidelines to follow for Yocto Project
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Guidelines to follow for general projects
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Summary
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Index
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Index
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Why subscribe?
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Other Books You May Enjoy
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Other Books You May Enjoy
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Preface

Linux has been consistently used in cutting-edge products, and embedded systems have been wrought in the technological portfolio of humankind.

The Yocto Project is in an optimal position to be the choice for your projects. It provides a rich set of tools to help you use most of your energy and resources in your product development instead of reinventing the wheel.

The usual tasks and requirements of embedded Linux-based products and development teams were the guideline for this book’s conception. However, being written by active community members with a practical and straightforward approach is a stepping stone for both your learning curve and the product’s project.

In this third edition, the book has been thoroughly reworked to incorporate the feedback from readers from previous editions and extended to facilitate the understanding of complex concepts related to the Yocto Project, in addition to being fully updated to reflect the changes made up to Yocto Project Long Term Support version 4.0 (codename Kirkstone).

Furthermore, two new chapters have been added, one regarding using QEMU to speed product development through emulation and one about Yocto Project and general project guidelines.

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