Book Image

Embedded Linux Development using Yocto Projects - Second Edition

By : Otavio Salvador, Daiane Angolini
Book Image

Embedded Linux Development using Yocto Projects - Second Edition

By: Otavio Salvador, Daiane Angolini

Overview of this book

Yocto Project is turning out to be the best integration framework for creating reliable embedded Linux projects. It has the edge over other frameworks because of its features such as less development time and improved reliability and robustness. Embedded Linux Development using Yocto Project starts with an in-depth explanation of all Yocto Project tools, to help you perform different Linux-based tasks. The book then moves on to in-depth explanations of Poky and BitBake. It also includes some practical use cases for building a Linux subsystem project using Yocto Project tools available for embedded Linux. The book also covers topics such as SDK, recipetool, and others. By the end of the book, you will have learned how to generate and run an image for real hardware boards and will have gained hands-on experience at building efficient Linux systems using Yocto Project.
Table of Contents (22 chapters)
Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
7
Diving into BitBake Metadata
Index

Adding extra options to recipes based on Autoconf


Let's assume we have Autoconf's build system-based application, along with a preexisting recipe for it, and we want to do the following:

  • Enable my-feature
  • Disable another-feature

The content of the .bbappend file, in order to make the changes, will be the following:

EXTRA_OECONF += "--enable-my-feature --disable-another-feature"
EXTRA_OEMAKE += "DEFINE_PASSED_TO_MAKE=1"

This can also be done based on the hardware we are building for, as follows:

EXTRA_OECONF_append_arm = " --enable-my-arm-feature"
EXTRA_OEMAKE_append_mymachine = " MYMACHINE_SPECIFIC=1"

Note

EXTRA_OECONF is used to add extra options to the configuration script.EXTRA_OEMAKE is used to add extra parameters to the make call.