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You're reading from Embedded Linux Development using Yocto Projects - Second Edition

Product typeBook

Published inNov 2017

Publisher

ISBN-139781788470469

Edition2nd Edition

Tools

Linux Yocto Project

Concepts

Embedded Systems

Authors (2):

Otavio Salvador

Daiane Angolini

View More author details

Fetching the source code

When the Poky source code is downloaded, what is actually copied is the metadata and the BitBake tool. Additional source code is fetched on demand. One of the main features supported by BitBake is source code fetching.

This support has been designed to be as modular and as flexible as possible. Every Linux-based system includes the Linux kernel and several other utilities that form the root filesystem, such as OpenSSH or a Linux kernel.

The OpenSSH source code is available from its upstream website as a tar.gz file hosted on an HTTP server, while the Linux kernel release is usually hosted on a Git repository, and those two different source codes can easily be fetched by BitBake.

BitBake offers support for many different fetcher modules that allow the retrieval of tarball files and a number of other protocols, such as Git, Subversion, Bazaar, OSC, HTTP, HTTPS, FTP, CVS, Mercurial, Perforce, and SSH.

The mechanism used by BitBake to fetch the source code is internally...

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Embedded Linux Development using Yocto Projects - Second Edition

Published in: Nov 2017Publisher: ISBN-13: 9781788470469

Authors (2)

Otavio Salvador

Otavio Salvador loves technology and started his free software activities in 1999. In 2002, he founded O.S. Systems, a company focused on embedded system development services and consultancy worldwide, creating and maintaining customized BSPs, and helping companies with their product developments challenges. This resulted in his joining the OpenEmbedded community in 2008, when he became an active contributor to the OpenEmbedded project.
Read more about Otavio Salvador

Daiane Angolini

Daiane Angolini has been working with embedded Linux since 2008. She has been working as an application engineer at NXP, acting on internal development, porting custom applications from Android, and on-site customer support for i.MX architectures in areas such as the Linux kernel, u-boot, Android, Yocto Project, and user-space applications. However, it was on the Yocto Project that she found her place.
Read more about Daiane Angolini

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