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You're reading from Yocto for Raspberry Pi

Product typeBook

Published inJun 2016

PublisherPackt

ISBN-139781785281952

Edition1st Edition

Tools

Raspberry Pi Yocto Project

Concepts

Robotics

Authors (2):

TEXIER Pierre-Jean

Petter Mabäcker

View More author details

Fetching

The mechanism used by BitBake to fetch source code is internally called the fetcher backend. There are several fetcher backends supported, which can be configured to align user requirements and optimize source code fetching.

BitBake supports several protocols for remote file downloads. The most commonly used are http://, https://, and git://. When BitBake executes the do_fetch task in a recipe, it checks the contents of SRC_URI. We will discover, through the various fetchers, how to proceed based on our need.

The local file fetcher

The local file fetcher submodule handles URLs that begin with file://. The filename you specify within the URL can either be an absolute or relative path to a file. For example, with a file called my_source_file.c, we must write the SRC_URI attribute's content like this:

SRC_URI = "file://my_source_file.c"

The HTTP fetcher

The HTTP fetcher obtains files from web servers. Internally, the fetcher uses the wget utility.

In this example, we will use the...

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Yocto for Raspberry Pi

Published in: Jun 2016Publisher: PacktISBN-13: 9781785281952

Authors (2)

TEXIER Pierre-Jean

Pierre-Jean TEXIER has been an embedded Linux engineer at Amplitude Systèmes (Amplitude Systèmes was a pioneer in the marketing of Ytterbium femtosecond lasers) since 2014 where he maintains a custom system on chip i.MX6 with the Yocto project (meta-fsl-arm), which is made by a French company: EUKREA. He is a graduate of ESTEI school at Bordeaux where he spent 3 years as a student in order to become an embedded Linux Engineer. He is a big ardent of the world of free software and the embedded world. His knowledge background includes C/C++, Yocto, Linux, Bash, Kernel development but he is also open to trying new things and testing new technologies. First, I want to thank my patience wife for her during my writing sessions. I also give thanks my parents and my brother, who without them, this book possibly would not have happened. I would also like to thank all of the mentors that I've had over the years. Mentors such as Cyril SAGONERO, Sylvain LE HENAFF, Pierre BORDELAIS, Vincent POULAILLEAU, Fabrice BONNET, Jean-Claude PERESSINOTTO, Pierre AUBRY. Without learning from these teachers, there is not a chance I could be doing what I do today. To finish I would like to thanks Eric MOTTAY the CEO of Amplitude Systèmes, Luca TESTA the head of Electronics team at Amplitude Systèmes for his trust, Hitesham WOODHOO, Alexandre GAMONET, Kevin PINTO and Guillaume MACHINET For the various discussions about the raspberry pi during coffee breaks.
Read more about TEXIER Pierre-Jean

Petter Mabäcker

Petter Mabcker is a senior software developer specializing in embedded Linux systems. For the past 8 years, he has been working with embedded Linux professionally. Currently, Petter works as a Scrum Master and senior software developer at Ericsson AB. Additionally, his knowledge includes C/C++, shell scripting, Yocto Project (including BitBake and OpenEmbedded), Scrum, and Git. In 2013, Petter started the small business Technux, which he runs as a side project in parallel with his duties at Ericsson. Some of the focus areas of the business are open source embedded Linux projects, such as the Yocto Project, together with different projects that involve the Raspberry Pi. As part of the work with Technux, Petter works as a contributer to the Yocto Project (including the Raspberry Pi BSP layer, known as meta-raspberrypi).
Read more about Petter Mabäcker

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