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Embedded Linux Development using Yocto Projects

You're reading from   Embedded Linux Development using Yocto Projects Learn to leverage the power of Yocto Project to build efficient Linux-based products

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Product type Paperback
Published in Nov 2017
Publisher
ISBN-13 9781788470469
Length 162 pages
Edition 2nd Edition
Tools
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Authors (2):
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Otavio Salvador Otavio Salvador
Author Profile Icon Otavio Salvador
Otavio Salvador
Daiane Angolini Daiane Angolini
Author Profile Icon Daiane Angolini
Daiane Angolini
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Toc

Table of Contents (15) Chapters Close

Preface 1. Meeting the Yocto Project FREE CHAPTER 2. Baking Our Poky-Based System 3. Using Toaster to Bake an Image 4. Grasping the BitBake Tool 5. Detailing the Temporary Build Directory 6. Assimilating Packaging Support 7. Diving into BitBake Metadata 8. Developing with the Yocto Project 9. Debugging with the Yocto Project 10. Exploring External Layers 11. Creating Custom Layers 12. Customizing Existing Recipes 13. Achieving GPL Compliance 14. Booting Our Custom Embedded Linux

Using a custom distribution


The creation of a distribution is a mix of simplicity and complexity. The process of creating the distribution file is very easy; however, the distribution configuration has a high impact in the way Poky behaves, and may cause a binary incompatibility with previously built binaries, depending on the options we use.

The distribution is where we define global options, such as the toolchain version, graphical backends, support for OpenGL, and so on. We should make a distribution only in case the default settings provided by Poky do not fulfil our requirements.

Usually, we intend to change a small set of options from Poky. For example, we remove the X11 support to use a framebuffer instead. We can easily accomplish this by reusing Poky distribution and overriding the variables we need. For example, the sample distribution represented by the file <layer>/conf/distro/mydistro.conf is as follows:

require conf/distro/poky.conf
DISTRO = "mydistro"
DISTRO_NAME = "mydistro...
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