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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 2. Baking Our Poky-Based System FREE CHAPTER 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

Tracking image, package, and SDK contents


The easiest way to ensure we have the image, packages, and SDK, along with the expected contents, is to use the Build History mechanism.

When a recipe is updated for a new version or has its code changed, it may influence the contents put in the generated packages and, as a consequence, in the image or SDK.

As Poky deals with a huge amount of recipes, and our images or SDKs frequently have tens or hundreds of packages included, it may be quite difficult to track the package contents. The Poky tool responsible for helping us in this task is the Build History.

The Build History, as we can guess from its name, keeps a history of the contents of several artifacts built during the use of Poky. It can track package, image, and SDK building.

To enable the Build History in our system, we need to add the following lines of code in our build/conf/local.conf file:

INHERIT += "buildhistory"
BUILDHISTORY_COMMIT = "1"

The INHERIT method includes the buildhistory class...

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