You're reading from Embedded Linux Development Using Yocto Project Leverage the power of the Yocto Project to build efficient Linux-based products

Product type Paperback

Published in Apr 2023

Publisher Packt

ISBN-13 9781804615065

Length 196 pages

Edition 3rd Edition

Tools

Linux

Concepts

Operating Systems

Authors (2):

Otavio Salvador

Daiane Angolini

View More author details

Table of Contents (20) Chapters

Preface

1. Chapter 1: Meeting the Yocto Project

2. Chapter 2: Baking Our First Poky-Based System FREE CHAPTER

3. Chapter 3: Using Toaster to Bake an Image

4. Chapter 4: Meeting the BitBake Tool

5. Chapter 5: Grasping the BitBake Tool

6. Chapter 6: Detailing the Temporary Build Directory

7. Chapter 7: Assimilating Packaging Support

8. Chapter 8: Diving into BitBake Metadata

9. Chapter 9: Developing with the Yocto Project

10. Chapter 10: Debugging with the Yocto Project

11. Chapter 11: Exploring External Layers

12. Chapter 12: Creating Custom Layers

13. Chapter 13: Customizing Existing Recipes

14. Chapter 14: Achieving GPL Compliance

15. Chapter 15: Booting Our Custom Embedded Linux

16. Chapter 16: Speeding Up Product Development through Emulation – QEMU

17. Chapter 17: Best Practices

18. Index

Why subscribe?

19. Other Books You May Enjoy

Detailing a layer’s source code

Usually, a layer has a directory tree, as shown in the following screenshot:

Figure 11.2 – The standard layer layout

Inside this directory are two files, <layer>/COPYING and <layer>/README, a license and a message to a user respectively. In <layer>/README, we must specify any other dependency and information that the layer’s users need to know. The meta- prefix for the layer is not a requirement but a commonly used naming convention.

The classes folder should hold the classes specific to that layer (the .bbclass files). It is an optional directory.

The <layer>/conf folder is mandatory and should provide the configuration files (the .conf files). The layer configuration file, <layer>/conf/layer.conf, which will be covered in detail in the next chapter, is the file with the layer definition.

An example of the directory layout of the <layer>/conf folder is shown...