IoT & Hardware
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You're reading from  Embedded Linux Projects Using Yocto Project Cookbook

Product typeBook
Published inMar 2015
Publisher
ISBN-139781784395186
Edition1st Edition
Tools
Yocto Project
Concepts
Embedded Systems
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Author (1)
Alex Gonzalez
Alex Gonzalez
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Alex Gonzalez

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.
Read more about Alex Gonzalez

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Exploring an image's contents

We have already seen how to use the build history feature to obtain a list of packages and files included in our image. In this recipe, we will explain how the root filesystem is built so that we are able to track its components.

Getting ready

When packages are built, they are classified inside the working directory of your project (tmp/work) according to their architecture. For example, on a wandboard-quad build, we find the following directories:

  • all-poky-linux: This is used for architecture-independent packages

  • cortexa9hf-vfp-neon-poky-linux-gnueabi: This is used for cortexa9, hard floating point packages

  • wandboard_quad-poky-linux-gnueabi: This is used for machine-specific packages; in this case, wandboard-quad

  • x86_64-linux: This is used for the packages that form the host sysroot

BitBake will build all the packages included in its dependency list inside its own directory.

How to do it...

To find the build directory for a given package, we can execute the following...

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Embedded Linux Projects Using Yocto Project Cookbook
Published in: Mar 2015Publisher: ISBN-13: 9781784395186
© 2015 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Alex Gonzalez

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.
Read more about Alex Gonzalez

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