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You're reading from  Using Yocto Project with BeagleBone Black

Product typeBook
Published inJun 2015
Reading LevelIntermediate
Publisher
ISBN-139781785289736
Edition1st Edition
Languages
Python
Tools
Ubuntu ServerBeagleBone
Concepts
Single Board Computers
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Authors (2):
Hafiz Muhammad I Sadiq
Hafiz Muhammad I Sadiq
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Hafiz Muhammad I Sadiq


Read more about Hafiz Muhammad I Sadiq

Irfan Sadiq
Irfan Sadiq
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Irfan Sadiq

H M Irfan Sadiq was a Linux enthusiast as a graduate student. He started his career as an embedded system development engineer and has been working as an H.264 Decoder developer and optimizer for the VLIW architecture. He got an opportunity to work on multiple multimedia frameworks that are open source as well as proprietary. He tried to work in a start-up in the entirely different domain of web development. He has been working on OpenEmbedded and Yocto Project technologies since he joined Mentor Graphics as the technical lead back in 2010. He has been working on derivative technologies of Yocto Project and OpenEmbedded for quite some time now, spanning more than 4 years. He has also been working on various hardware platforms based on the ARM, PPC, and x86 architecture. The diverse nature of subsequent BSPs has challenges in the context of QA. One of the challenges was to keep the QA packages in one place in such a way that they could be applied to all different product/platform combinations. He addressed this by creating a Yocto Project-based layer for which he is a maintainer as well as a gatekeeper.
Read more about Irfan Sadiq

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BitBake execution

To get us to a successful package or image, BitBake performs some steps that we need to go through to get an understanding of the workflow. In certain cases, some of these steps can be avoided; but we are not discussing such cases, considering them as corner cases. For details on these, we should refer to the BitBake user manual.

Parsing metadata

When we invoke the BitBake command to build our image, the first thing it does is parse our base configuration metadata. This metadata, as we have already seen in the previous chapter, consists of build_bb/conf/bblayers.conf, multiple layer/conf/layer.conf, and poky/meta/conf/bitbake.conf. This data can be of the following types:

  • Configuration data

  • Class data

  • Recipes

Key variables BBFILES and BBPATH, which are constructed from the layer.conf file. Thus, the constructed BBPATH variable is used to locate configuration files under conf/ and class files under class/ directories. The BBFILES variable is used to find recipe files (.bb and...

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Using Yocto Project with BeagleBone Black
Published in: Jun 2015Publisher: ISBN-13: 9781785289736
© 2015 Packt Publishing Limited All Rights Reserved

Authors (2)

author image
Hafiz Muhammad I Sadiq


Read more about Hafiz Muhammad I Sadiq

author image
Irfan Sadiq

H M Irfan Sadiq was a Linux enthusiast as a graduate student. He started his career as an embedded system development engineer and has been working as an H.264 Decoder developer and optimizer for the VLIW architecture. He got an opportunity to work on multiple multimedia frameworks that are open source as well as proprietary. He tried to work in a start-up in the entirely different domain of web development. He has been working on OpenEmbedded and Yocto Project technologies since he joined Mentor Graphics as the technical lead back in 2010. He has been working on derivative technologies of Yocto Project and OpenEmbedded for quite some time now, spanning more than 4 years. He has also been working on various hardware platforms based on the ARM, PPC, and x86 architecture. The diverse nature of subsequent BSPs has challenges in the context of QA. One of the challenges was to keep the QA packages in one place in such a way that they could be applied to all different product/platform combinations. He addressed this by creating a Yocto Project-based layer for which he is a maintainer as well as a gatekeeper.
Read more about Irfan Sadiq

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