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)

Using the Extensible SDK

The Extensible SDK expands the functionalities of the Standard SDK. Some of the significant capabilities included are as follows:

  • Generate recipes
  • Build recipes
  • Build images
  • Install packages in the internal toolchain
  • Deploy packages to the target

Those additional features are provided by the devtool utility, which is also available in the standard Yocto Project environment.

To generate the Extensible SDK, use the following command:

Figure 9.8 – Command to generate the Extensible SDK

Figure 9.8 – Command to generate the Extensible SDK

The resulting files are in build/tmp/deploy/sdk/. Considering we used the Extensible SDK for core-image-full-cmdline, we see the following set of files:

Figure 9.9 – The resultant files after running bitbake core-image-full-cmdline -c populate_sdk_ext

Figure 9.9 – The resultant files after running bitbake core-image-full-cmdline -c populate_sdk_ext

The next step after creating the Extensible SDK is to install it. To install it, we can execute the generated script. The following...