Yocto Project Overview and Concepts Manual

Table of Contents

• 1 The Yocto Project Overview and Concepts Manual
  • 1.1 Welcome
  • 1.2 Other Information
• 2 Introducing the Yocto Project
  • 2.1 What is the Yocto Project?
    • 2.1.1 Features
    • 2.1.2 Challenges
  • 2.2 The Yocto Project Layer Model
  • 2.3 Components and Tools
    • 2.3.1 Development Tools
    • 2.3.2 Production Tools
    • 2.3.3 Open-Embedded Build System Components
    • 2.3.4 Reference Distribution (Poky)
    • 2.3.5 Packages for Finished Targets
    • 2.3.6 Archived Components
  • 2.4 Development Methods
  • 2.5 Reference Embedded Distribution (Poky)
  • 2.6 The OpenEmbedded Build System Workflow
  • 2.7 Some Basic Terms
• 3 The Yocto Project Development Environment
  • 3.1 Open Source Philosophy
  • 3.2 The Development Host
  • 3.3 Yocto Project Source Repositories
  • 3.4 Git Workflows and the Yocto Project
  • 3.5 Git
    • 3.5.1 Repositories, Tags, and Branches
    • 3.5.2 Basic Commands
  • 3.6 Licensing
• 4 Yocto Project Concepts
  • 4.1 Yocto Project Components
    • 4.1.1 BitBake
    • 4.1.2 Recipes
    • 4.1.3 Classes
    • 4.1.4 Configurations
  • 4.2 Layers
  • 4.3 OpenEmbedded Build System Concepts
    • 4.3.1 User Configuration
    • 4.3.2 Metadata, Machine Configuration, and Policy Configuration
      • 4.3.2.1 Distro Layer
      • 4.3.2.2 BSP Layer
      • 4.3.2.3 Software Layer
    • 4.3.3 Sources
      • 4.3.3.1 Upstream Project Releases
      • 4.3.3.2 Local Projects
      • 4.3.3.3 Source Control Managers (Optional)
      • 4.3.3.4 Source Mirror(s)
    • 4.3.4 Package Feeds
    • 4.3.5 BitBake Tool
      • 4.3.5.1 Source Fetching
      • 4.3.5.2 Patching
      • 4.3.5.3 Configuration, Compilation, and Staging
      • 4.3.5.4 Package Splitting
      • 4.3.5.5 Image Generation
      • 4.3.5.6 SDK Generation
      • 4.3.5.7 Stamp Files and the Rerunning of Tasks
      • 4.3.5.8 Setscene Tasks and Shared State
    • 4.3.6 Images
    • 4.3.7 Application Development SDK
  • 4.4 Cross-Development Toolchain Generation
  • 4.5 Shared State Cache
    • 4.5.1 Overall Architecture
    • 4.5.2 Checksums (Signatures)
    • 4.5.3 Shared State
    • 4.5.4 Hash Equivalence
  • 4.6 Automatically Added Runtime Dependencies
  • 4.7 Fakeroot and Pseudo

---

The Yocto Project ®

<docs@lists.yoctoproject.org>

Permission is granted to copy, distribute and/or modify this document under the terms of the Creative Commons Attribution-Share Alike 2.0 UK: England & Wales as published by Creative Commons.

To report any inaccuracies or problems with this (or any other Yocto Project) manual, or to send additions or changes, please send email/patches to the Yocto Project documentation mailing list at docs@lists.yoctoproject.org or log into the Libera Chat #yocto channel.