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

Working with open source and proprietary code

It is common for an embedded product to be built upon an open source system like the one built by Yocto, and to include proprietary software that adds value and specializes the product. This proprietary part usually contains intellectual property and needs to be protected, and it's important to understand how it can coexist with open source code.

This recipe will discuss some examples of open source packages commonly found on embedded products and will briefly explain how to use proprietary software with them.

How to do it...

Open source licenses can be broadly divided into two categories based on whether they are:

  • Permissive: These are similar to Internet Software Consortium (ISC), MIT, and BSD licenses. They have few requirements attached to them and they just require us to preserve copyright and limited warranty notices.
  • Restrictive: These are similar to the GPL, and bind us to not only distribute the source code and modifications, either with...