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

Embedded Linux Development with Yocto Project

By : Otavio Salvador
3.9 (20)
Buy this Book
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Embedded Linux Development with Yocto Project

Embedded Linux Development with Yocto Project

3.9 (20)
By: Otavio Salvador
Buy this Book

Overview of this book

A practical tutorial guide which introduces you to the basics of Yocto Project, and also helps you with its real hardware use to boost your Embedded Linux-based project. If you are an embedded systems enthusiast and willing to learn about compelling features offered by the Yocto Project, then this book is for you. With prior experience in the embedded Linux domain, you can make the most of this book to efficiently create custom Linux-based systems.
Table of Contents (17 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Meeting the Yocto Project
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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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Understanding Poky
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The alliance of OpenEmbedded Project and Yocto Project
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Summary
2
2. Baking Our Poky-based System
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2. Baking Our Poky-based System
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Configuring a 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
3
3. Using Hob to Bake an Image
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3. Using Hob to Bake an Image
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Building an image using Hob
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Customizing an image with Hob
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Summary
4
4. Grasping the BitBake Tool
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4. Grasping the BitBake Tool
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Understanding the BitBake tool
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Exploring metadata
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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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Understanding BitBake's tasks
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Generating a root filesystem image
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Summary
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5. Detailing the Temporary Build Directory
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5. 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
6
6. Assimilating Packaging Support
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6. Assimilating Packaging Support
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Using supported package formats
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Understanding shared state cache
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Explaining package versioning
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Package feeds
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Summary
7
7. Diving into BitBake Metadata
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7. Diving into BitBake Metadata
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Using metadata
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Working with metadata
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Summary
8
8. Developing with the Yocto Project
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8. Developing with the Yocto Project
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Deciphering the software development kit
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Working with the Poky SDK
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Developing applications on the target
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Integrating with Eclipse
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Summary
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9. Debugging with the Yocto Project
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9. 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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Utilizing a development shell
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Using the GNU Project Debugger for debugging
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Summary
10
10. Exploring External Layers
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10. Exploring External Layers
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Powering flexibility with layers
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Detailing the layer's source code
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Adding meta layers
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Summary
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11. Creating Custom Layers
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11. Creating Custom Layers
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Making a new layer
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Adding metadata to the layer
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Creating an image
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Adding a package recipe
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Writing a machine definition
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Using a custom distribution
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Machine features versus distro features
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Understanding the variables scope
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Summary
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12. Customizing Existing Recipes
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12. Customizing Existing Recipes
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Common use cases
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Adding extra options to recipes based on Autoconf
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Applying a patch
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Adding extra files to the existing packages
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Changing recipe feature configuration
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Customizing BusyBox
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Customizing the linux-yocto framework
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Summary
13
13. Achieving GPL Compliance
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13. 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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14. Booting Our Custom Embedded Linux
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14. Booting Our Custom Embedded Linux
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Exploring the Wandboard
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Discovering Freescale ARM BSP
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Using Wandboard with the Yocto Project
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Building an image for Wandboard
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Booting Wandboard from the SD card
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Summary
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A. References
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A. References
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Index
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Index

Configuring a host system

The process needed to set up our host system depends on the distribution we run on it. Poky has a set of supported Linux distributions, and if we are new to embedded Linux development, it is advisable to use one of the supported Linux distributions to avoid wasting time debugging build issues related to the host system support. Currently, the supported distributions are the following:

  • Ubuntu 12.04 (LTS)
  • Ubuntu 13.10
  • Ubuntu 14.04 (LTS)
  • Fedora release 19 (Schrödinger's Cat)
  • Fedora release 20 (Heisenbug)
  • CentOS release 6.4
  • CentOS release 6.5
  • Debian GNU/Linux 7.x (Wheezy)
  • openSUSE 12.2
  • openSUSE 12.3
  • openSUSE 13.1

If our preferred distribution is not in the preceding list, it doesn't mean it is not possible to use Poky on it. However, it is unknown whether it will work, and we may get unexpected results.

The packages that need to be installed into the host system vary from one distribution to another. Throughout this book, you find instructions for Debian and Fedora...

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Embedded Linux Development with Yocto Project
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