Book Image

Embedded Linux Development Using Yocto Project - Third Edition

By : Otavio Salvador, Daiane Angolini
Book Image

Embedded Linux Development Using Yocto Project - Third Edition

By: Otavio Salvador, Daiane Angolini

Overview of this book

The Yocto Project is the industry standard for developing dependable embedded Linux projects. It stands out from other frameworks by offering time-efficient development with enhanced reliability and robustness. With Embedded Linux Development Using Yocto Project, you’ll acquire an understanding of Yocto Project tools, helping you perform different Linux-based tasks. You’ll gain a deep understanding of Poky and BitBake, explore practical use cases for building a Linux subsystem project, employ Yocto Project tools available for embedded Linux, and uncover the secrets of SDK, recipe tool, and others. This new edition is aligned with the latest long-term support release of the aforementioned technologies and introduces two new chapters, covering optimal emulation in QEMU for faster product development and best practices. By the end of this book, you’ll be well-equipped to generate and run an image for real hardware boards. You’ll gain hands-on experience in building efficient Linux systems using the Yocto Project.
Table of Contents (20 chapters)

Adding extra options to recipes based on Autotools

Let’s assume we have Autotools-based application, along with a preexisting recipe for it, and we want to do the following:

  • Enable my-feature
  • Disable another-feature

The content of the .bbappend file to make the changes will be the following:

Figure 13.2 – Adding extra configuration to the Autoconf flags

Figure 13.2 – Adding extra configuration to the Autoconf flags

The same strategy can be used if we need to enable it conditionally based on the hardware we are building for, as follows:

Figure 13.3 – Conditionally adding extra configuration to the Autoconf flags

Figure 13.3 – Conditionally adding extra configuration to the Autoconf flags

The Yocto Project supports many different build systems, and the variables to configure them are shown in the following table:

Build System

Variable

Autotools

EXTRA_OECONF

Cargo

...