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Embedded Linux Development Using Yocto Project

Embedded Linux Development Using Yocto Project

By : Otavio Salvador, Angolini
5 (9)
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Embedded Linux Development Using Yocto Project

Embedded Linux Development Using Yocto Project

5 (9)
By: Otavio Salvador, 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)
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Utilizing a development shell

A development shell can be a helpful tool when editing packages or debugging build failures. The following steps take place when we use devshell:

  1. Source files are extracted into the working directory.
  2. Patches are applied.
  3. A new terminal is opened in the working directory.

All the environment variables needed for the build are available in the new terminal, so we can use commands such as configure and make. The commands execute just as if the build system were running them.

The following command is an example that uses devshell on a target named linux-yocto:

Figure 10.9 – Running devshell for the linux-yocto recipe

Figure 10.9 – Running devshell for the linux-yocto recipe

The command from Figure 10.9 allows us to rework the Linux kernel source code, build it, and change its code as needed. In Figure 10.10, you can see the log after executing the bitbake linux-yocto -c devshell command:

Figure 10.10 – The log for bitbake linux-yocto -c devshell

Figure 10.10 – The log for bitbake...

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