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 Standard SDK

Usually, an SDK has a set of libraries and applications it must provide, which is defined in an image tailored to the product. These are called image-based SDKs. For example, we can generate the Standard SDK for core-image-full-cmdline with the following command:

Figure 9.2 – How to generate the Standard SDK for core-image-full-cmdline

Figure 9.2 – How to generate the Standard SDK for core-image-full-cmdline

Another option is to create a generic SDK with the toolchain and debugging tools. This generic SDK is called meta-toolchain and is used mainly for Linux kernel and bootloader development and their debugging processes. It may not be sufficient to build applications with complex dependencies. To create meta-toolchain, use the following command:

Figure 9.3 – How to generate a generic SDK

Figure 9.3 – How to generate a generic SDK

In both cases, the resulting SDK self-installer files are at build/tmp/deploy/sdk/. Considering we used the Standard SDK for core-image-full-cmdline, we can see the following...