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Embedded Linux Development Using Yocto Project Cookbook. - Second Edition

You're reading from  Embedded Linux Development Using Yocto Project Cookbook. - Second Edition

Product type Book
Published in Jan 2018
Publisher
ISBN-13 9781788399210
Pages 456 pages
Edition 2nd Edition
Languages
Concepts
Author (1):
Alex Gonzalez Alex Gonzalez
Profile icon Alex Gonzalez
LinkedIn
Alex González is a software engineering supervisor at Digi International and product owner of the Digi Embedded Yocto distribution. He started working professionally with embedded systems in 1999 and the Linux kernel in 2004, designing products for voice and video over IP networks, and followed his interests into machine-to-machine (M2M) technologies and the Internet of Things. Born and raised in Bilbao, Spain, Alex has an electronic engineering degree from the University of the Basque Country and he received his MSc in communication systems from the University of Portsmouth.
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Table of Contents (13) Chapters

Title Page
Dedication
Packt Upsell
Foreword
Contributors
Preface
The Build System The BSP Layer The Software Layer Application Development Debugging, Tracing, and Profiling Other Books You May Enjoy Index

Building the Linux kernel

As was the case with U-Boot, Linux kernel development is quicker and less error-prone when using the Yocto SDK to build it. However, for smaller changes, the Yocto build system can also be used.

In this recipe, we will show you how to build and modify the Linux kernel source both with Yocto's SDK and the Yocto build system, and boot our target device with it.

How to do it...

We will use the Yocto Project's SDK already installed in your host:

  1. Prepare the environment as follows:
$ source /opt/poky/2.4/environment-setup-cortexa9hf-neon-poky-linux-gnueabi
  1. Configure the kernel with the default machine configuration:
$ cd /opt/yocto/linux-wandboard$ cp /opt/yocto/fsl-community-bsp/sources/meta-bsp-custom/recipes-kernel/linux/linux-wandboard-4.1-2.0.x/wandboard-custom/defconfig arch/arm/configs/wandboard_defconfig$ make wandboard_defconfig
  1. Compile the kernel image, modules, and the device tree file with the following:
$ make -jN

Note

You can optionally pass a -jN argument to make...

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Authors (1)

Profile icon Alex Gonzalez
LinkedIn
Alex González is a software engineering supervisor at Digi International and product owner of the Digi Embedded Yocto distribution. He started working professionally with embedded systems in 1999 and the Linux kernel in 2004, designing products for voice and video over IP networks, and followed his interests into machine-to-machine (M2M) technologies and the Internet of Things. Born and raised in Bilbao, Spain, Alex has an electronic engineering degree from the University of the Basque Country and he received his MSc in communication systems from the University of Portsmouth.
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See other products by Alex Gonzalez

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