Book Image

Embedded Linux Development Using Yocto Project Cookbook - Second Edition

By : Alex Gonzalez
Book Image

Embedded Linux Development Using Yocto Project Cookbook - Second Edition

By: Alex Gonzalez

Overview of this book

The Yocto Project has become the de facto distribution build framework for reliable and robust embedded systems with a reduced time to market.You'll get started by working on a build system where you set up Yocto, create a build directory, and learn how to debug it. Then, you'll explore everything about the BSP layer, from creating a custom layer to debugging device tree issues. In addition to this, you’ll learn how to add a new software layer, packages, data, scripts, and configuration files to your system. You will then cover topics based on application development, such as using the Software Development Kit and how to use the Yocto project in various development environments. Toward the end, you will learn how to debug, trace, and profile a running system. This second edition has been updated to include new content based on the latest Yocto release.
Table of Contents (13 chapters)
Title Page
Packt Upsell

Adding supported packages

It is common to want to add new packages to an image that already has an available recipe in one of the included Yocto layers.

When the target image desired is very different from the supplied core images, it is recommended to define a new image rather than to customize an existing one.

This recipe will show how to customize an existing image by adding supported packages to it, but also to create a completely new image recipe if needed.

Getting ready

To discover whether a package we require is included in our configured layers, and what specific versions are supported, we can use bitbake-layers from our build directory as we saw previously:

$ bitbake-layers show-recipes htophtop: meta-oe              1.0.3

Alternatively, we can also use BitBake as follows:

$ bitbake -s | grep htophtop                                                :1.0.3-r0

Or we can use the find Linux command in our sources directory:

$ find /opt/yocto/fsl-community-bsp/sources -type f -name "htop*.bb"...