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 the GNU build system

A Makefile is a good solution when you are always going to build and run your software on the same system and things like glibc and gcc versions and the available library versions are known. However, most software needs to be built and run in a variety of systems.

Getting ready

The GNU build system, or autotools, is a set of tools whose aim is to create a Makefile for your software in a variety of systems. It's made up of three main tools:

  • Autoconf: This parses the contents of a file that describes the source code to be built and creates a configure script. This script will then be used to generate the final Makefile.
  • Automake: This parses the contents of a file and converts it into a file. This is then used by the configure script generated earlier to obtain a config.status script that gets automatically executed to obtain the final Makefile.
  • Libtools: This manages the creation of both static and dynamic libraries.