Book Image

Embedded Linux Projects Using Yocto Project Cookbook

By : Alex Gonzalez
Book Image

Embedded Linux Projects Using Yocto Project Cookbook

By: Alex Gonzalez

Overview of this book

Table of Contents (13 chapters)
Embedded Linux Projects Using Yocto Project Cookbook
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Building the Linux kernel


In this recipe, we will go through the development workflows described earlier using the Linux kernel as an example.

How to do it...

We will see how the following development workflows are applied to the Linux kernel:

  • External development

  • Working directory development

  • External source development

How it works...

Let's explain the three methodologies listed previously in detail.

External development

When compiling outside of the Yocto build environment, we can still use the Yocto-provided toolchain to build. The process is as follows:

  1. We will use the Yocto project cross-compilation toolchain already installed in your host.

  2. Clone the wandboard-org linux-wandboard repository locally:

    $ cd /opt/yocto
    $ git clone https://github.com/wandboard-org/linux.git linux-wandboard
    $ cd linux-wandboard
    
  3. Go to the branch specified in the linux-wandboard_3.10.17.bb recipe:

    $ git checkout -b wandboard_imx_3.10.17_1.0.2_ga origin/wandboard_imx_3.10.17_1.0.2_ga
    
  4. Compile the kernel source as follows...