Chapter 8: Yocto Under the Hood
In this chapter, we'll dive deeper into Yocto, embedded Linux's premier build system. We will begin with a tour of Yocto's architecture, taking you through the entire build workflow step by step. Next, we'll look at Yocto's multi-layer approach and why it is a good idea to separate metadata into different layers. As more and more BitBake layers stack up inside your projects, problems will inevitably arise. We will examine a number of ways to debug Yocto build failures, including task logs, devshell, and dependency graphs.
After taking apart the build system, we'll revisit the topic of BitBake from the previous chapter. This time around, we'll cover more of the basic syntax and semantics so that you can write your own recipes from scratch. We'll look at real-world examples of BitBake shell and Python code from actual recipe, include, and configuration files so that you know what to expect when you begin to venture...
