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)

Detailing the build directory

The build directory is a central information and artifact source for every Poky user. Its main directories are as follows:

  • conf: This contains the configuration files we use to control Poky and BitBake. We first used this directory in Chapter 2, Baking Our Poky-Based System. It stores configuration files, such as build/conf/local.conf and build/conf/bblayers.conf.
  • downloads: This stores all the downloaded artifacts. It works as a download cache. We talked about it in detail in Chapter 5, Grasping the BitBake Tool.
  • sstate-cache: This contains the snapshots of the packaged data. It is a cache mainly used to speed up the future build process, as it is used as a cache for the building process. This folder is detailed in Chapter 7, Assimilating Packaging Support.
  • tmp: This is the temporary build directory and the main focus of this chapter.