Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Free Learning
Arrow right icon
Learning Embedded Linux using the Yocto Project
Learning Embedded Linux using the Yocto Project

Learning Embedded Linux using the Yocto Project: Develop powerful embedded Linux systems with the Yocto Project components

Arrow left icon
Profile Icon Vaduva Jan Alexandru Profile Icon Alexandru Vaduva
Arrow right icon
€36.99
Full star icon Full star icon Full star icon Half star icon Empty star icon 3.3 (7 Ratings)
Paperback Jun 2015 334 pages 1st Edition
eBook
€20.98 €29.99
Paperback
€36.99
Subscription
Free Trial
Renews at €18.99p/m
Arrow left icon
Profile Icon Vaduva Jan Alexandru Profile Icon Alexandru Vaduva
Arrow right icon
€36.99
Full star icon Full star icon Full star icon Half star icon Empty star icon 3.3 (7 Ratings)
Paperback Jun 2015 334 pages 1st Edition
eBook
€20.98 €29.99
Paperback
€36.99
Subscription
Free Trial
Renews at €18.99p/m
eBook
€20.98 €29.99
Paperback
€36.99
Subscription
Free Trial
Renews at €18.99p/m

What do you get with Print?

Product feature icon Instant access to your digital eBook copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
OR
Modal Close icon
Payment Processing...
tick Completed

Shipping Address

Billing Address

Shipping Methods
Table of content icon View table of contents Preview book icon Preview Book

Learning Embedded Linux using the Yocto Project

Chapter 2. Cross-compiling

In this chapter, you will learn about toolchains, how to use and customize them, and how code standards apply to them. A toolchain contains a myriad of tools, such as compilers, linkers, assemblers, debuggers, and a variety of miscellaneous utilities that help to manipulate the resulting application binaries. In this chapter, you will learn how to use the GNU toolchain and become familiar with its features. You will be presented with examples that will involve manual configurations, and at the same time, these examples will be moved to the Yocto Project environment. At the end of the chapter, an analysis will be made to identify the similarities and differences between manual and automatic deployment of a toolchain, and the various usage scenarios available for it.

Introducing toolchains

A toolchain represents a compiler and its associated utilities that are used with the purpose of producing kernels, drivers, and applications necessary for a specific target. A toolchain usually contains a set of tools that are usually linked to each other. It consists of gcc, glibc, binutils, or other optional tools, such as a debugger optional compiler, which is used for specific programming languages, such as C++, Ada, Java, Fortran, or Objective-C.

Usually a toolchain, which is available on a traditional desktop or server, executes on these machines and produces executables and libraries that are available and can run on the same system. A toolchain that is normally used for an embedded development environment is called is a cross toolchain. In this case, programs, such as gcc, run on the host system for a specific target architecture, for which it produces a binary code. This whole process is referred to as cross-compilation, and it is the most common way to...

Components of toolchains

The GNU toolchain is a term used for a collection of programming tools under the GNU Project umbrella. This suite of tools is what is normally called a toolchain, and is used for the development of applications and operating systems. It plays an important role in the development of embedded systems and Linux systems, in particular.

The following projects are included in the GNU toolchain:

  • GNU make: This represents an automation tool used for compilation and build
  • GNU Compiler Collection (GCC): This represents a compiler's suite that is used for a number of available programming languages
  • GNU Binutils: This contains tools, such as linkers, assemblers, and so on - these tools are able to manipulate binaries
  • GNU Bison: This is a parser generator
  • GNU Debugger (GDB): This is a code debugging tool
  • GNU m4: This is an m4 macro processor
  • GNU build system (autotools): This consists of the following:
    • Autoconf
    • Autoheaders
    • Automake
    • Libtool

The projects included in the toolchain is described...

Delving into C libraries

The first library that we'll discuss here is the glibc library, which is designed for performance, compliance of standards, and portability. It was developed by the Free Software Foundation for the GNU/Linux operating system and is still present today on all GNU/Linux host systems that are actively maintained. It was released under the GNU Lesser General Public License.

The glibc library was initially written by Roland McGrath in the 1980s and it continued to grow until the 1990s when the Linux kernel forked glibc, calling it Linux libc. It was maintained separately until January 1997 when the Free Software Foundation released glibc 2.0. The glibc 2.0 contained so many features that it did not make any sense to continue the development of Linux libc, so they discontinued their fork and returned to using glibc. There are changes that are made in Linux libc that were not merged into glibc because of problems with the authorship of the code.

The glibc library is...

Working with toolchains

When generating a toolchain, the first thing that needs to be done is the establishment of an ABI used to generate binaries. This means that the kernel needs to understand this ABI and, at the same time, all the binaries in the system need to be compiled with the same ABI.

When working with the GNU toolchain, a good source of gathering information and understanding the ways in which work is done with these tools is to consult the GNU coding standards. The coding standard's purposes are very simple: to make sure that the work with the GNU ecosystem is performed in a clean, easy, and consistent manner. This is a guideline that needs to be used by people interested in working with GNU tools to write reliable, solid, and portable software. The main focus of the GNU toolchain is represented by the C language, but the rules applied here are also very useful for any programming languages. The purpose of each rule is explained by making sure that the logic behind the...

The Yocto Project reference

As I have mentioned, the major advantage and available feature of the Yocto Project environment is represented by the fact that a Yocto Project build does not use the host available packages, but builds and uses its own packages. This is done to make sure that a change in the host environment does not influence its available packages and that builds are made to generate a custom Linux system. A toolchain is one of the components because almost all packages that are constituents of a Linux distribution need the usage of toolchain components.

The first step for the Yocto Project is to identify the exact sources and packages that will be combined to generate the toolchain that will be used by later built packages, such as U-Boot bootloader, kernel, BusyBox and others. In this book, the sources that will be discussed are the ones available inside the dizzy branch, the latest poky 12.0 version, and the Yocto Project version 1.7. The sources can be gathered using the...

Introducing toolchains


A toolchain represents a compiler and its associated utilities that are used with the purpose of producing kernels, drivers, and applications necessary for a specific target. A toolchain usually contains a set of tools that are usually linked to each other. It consists of gcc, glibc, binutils, or other optional tools, such as a debugger optional compiler, which is used for specific programming languages, such as C++, Ada, Java, Fortran, or Objective-C.

Usually a toolchain, which is available on a traditional desktop or server, executes on these machines and produces executables and libraries that are available and can run on the same system. A toolchain that is normally used for an embedded development environment is called is a cross toolchain. In this case, programs, such as gcc, run on the host system for a specific target architecture, for which it produces a binary code. This whole process is referred to as cross-compilation, and it is the most common way to build...

Left arrow icon Right arrow icon

Description

If you are a Yocto and Linux enthusiast who wants to build embedded Linux systems but do not have the knowledge to do it, this is the book for you. It will also help those of you who have a bit of knowledge about Linux and the embedded world and are keen on learning more about the technology. This book will provide you with the skills needed to successfully interact with the Yocto Project components regardless of the fact that you are new to embedded development or an expert.

Who is this book for?

If you are a Yocto and Linux enthusiast who wants to build embedded Linux systems but do not have the knowledge to do it, this is the book for you. It will also help those of you who have a bit of knowledge about Linux and the embedded world and are keen on learning more about the technology. This book will provide you with the skills needed to successfully interact with the Yocto Project components regardless of the fact that you are new to embedded development or an expert.

What you will learn

  • Interact with and customize the bootloader for a board
  • Use the Yocto Project in the embedded Linux development process
  • Familiarize yourself with and customize the bootloader for a board
  • Explore and work with toolchain components such as binutils, gcc, glibc (C libraries), and kernel headers
  • Interact with a root filesystem for your project and also with meta layers
  • Discover more about realtime layer, security, virtualization, CGL, and LSB
  • Identify the Yocto Project components such as Eclipse ADT plugins, and Toaster
Estimated delivery fee Deliver to Ireland

Premium delivery 7 - 10 business days

€23.95
(Includes tracking information)

Product Details

Country selected
Publication date, Length, Edition, Language, ISBN-13
Publication date : Jun 30, 2015
Length: 334 pages
Edition : 1st
Language : English
ISBN-13 : 9781784397395
Vendor :
Linux Foundation
Category :
Languages :
Tools :

What do you get with Print?

Product feature icon Instant access to your digital eBook copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
OR
Modal Close icon
Payment Processing...
tick Completed

Shipping Address

Billing Address

Shipping Methods
Estimated delivery fee Deliver to Ireland

Premium delivery 7 - 10 business days

€23.95
(Includes tracking information)

Product Details

Publication date : Jun 30, 2015
Length: 334 pages
Edition : 1st
Language : English
ISBN-13 : 9781784397395
Vendor :
Linux Foundation
Category :
Languages :
Tools :

Packt Subscriptions

See our plans and pricing
Modal Close icon
€18.99 billed monthly
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Simple pricing, no contract
€189.99 billed annually
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just €5 each
Feature tick icon Exclusive print discounts
€264.99 billed in 18 months
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just €5 each
Feature tick icon Exclusive print discounts

Frequently bought together


Stars icon
Total 99.97
Embedded Linux Development with Yocto Project
€20.99
Embedded Linux Projects Using Yocto Project Cookbook
€41.99
Learning Embedded Linux using the Yocto Project
€36.99
Total 99.97 Stars icon
Banner background image

Table of Contents

14 Chapters
1. Introduction Chevron down icon Chevron up icon
2. Cross-compiling Chevron down icon Chevron up icon
3. Bootloaders Chevron down icon Chevron up icon
4. Linux Kernel Chevron down icon Chevron up icon
5. The Linux Root Filesystem Chevron down icon Chevron up icon
6. Components of the Yocto Project Chevron down icon Chevron up icon
7. ADT Eclipse Plug-ins Chevron down icon Chevron up icon
8. Hob, Toaster, and Autobuilder Chevron down icon Chevron up icon
9. Wic and Other Tools Chevron down icon Chevron up icon
10. Real-time Chevron down icon Chevron up icon
11. Security Chevron down icon Chevron up icon
12. Virtualization Chevron down icon Chevron up icon
13. CGL and LSB Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

Top Reviews
Rating distribution
Full star icon Full star icon Full star icon Half star icon Empty star icon 3.3
(7 Ratings)
5 star 28.6%
4 star 14.3%
3 star 14.3%
2 star 42.9%
1 star 0%
Filter icon Filter
Top Reviews

Filter reviews by




Daiane Aug 13, 2015
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This is *not* an Yocto Project's book. It is a Embedded Linux book yocto project flavored. And it is a very well explained embedded linux book.The content is for beginners, as it explain some basic concepts, and introduce very well why it's different to work with embedded linux. And having all this embedded world flavored with Yocto Project's tools is really the best.
Amazon Verified review Amazon
Maruko May 30, 2016
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I found this book useful to extend my knowledge.Unfortunately I noticed a lot of pictures taken from Creative Common presentations without any reference to the original source.
Amazon Verified review Amazon
Alexandre B Aug 13, 2015
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
This is book gives an overview of the full embedded Linux system integration, from the bootloader to the application. It is quite generic and only uses Yocto Project to illustrate the concepts which is great for beginners. A good follow up for in depth coverage is "Embedded Linux Development with Yocto Project" and will fit more advanced developers.
Amazon Verified review Amazon
Neto Sep 08, 2017
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
Its ok. Somehow I feel most of it is already out there in the Yocto manuals and linux docs but package for you convenience
Amazon Verified review Amazon
obie1somebody Mar 30, 2016
Full star icon Full star icon Empty star icon Empty star icon Empty star icon 2
This book is so badly edited that it is distracting. The author consistently uses language incorrectly and inaccurately where simpler more concise statements would suffice. Reading this book feels like translating rough English to English. It shouldn't be published yet.
Amazon Verified review Amazon
Get free access to Packt library with over 7500+ books and video courses for 7 days!
Start Free Trial

FAQs

What is the delivery time and cost of print book? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela
What is custom duty/charge? Chevron down icon Chevron up icon

Customs duty are charges levied on goods when they cross international borders. It is a tax that is imposed on imported goods. These duties are charged by special authorities and bodies created by local governments and are meant to protect local industries, economies, and businesses.

Do I have to pay customs charges for the print book order? Chevron down icon Chevron up icon

The orders shipped to the countries that are listed under EU27 will not bear custom charges. They are paid by Packt as part of the order.

List of EU27 countries: www.gov.uk/eu-eea:

A custom duty or localized taxes may be applicable on the shipment and would be charged by the recipient country outside of the EU27 which should be paid by the customer and these duties are not included in the shipping charges been charged on the order.

How do I know my custom duty charges? Chevron down icon Chevron up icon

The amount of duty payable varies greatly depending on the imported goods, the country of origin and several other factors like the total invoice amount or dimensions like weight, and other such criteria applicable in your country.

For example:

  • If you live in Mexico, and the declared value of your ordered items is over $ 50, for you to receive a package, you will have to pay additional import tax of 19% which will be $ 9.50 to the courier service.
  • Whereas if you live in Turkey, and the declared value of your ordered items is over € 22, for you to receive a package, you will have to pay additional import tax of 18% which will be € 3.96 to the courier service.
How can I cancel my order? Chevron down icon Chevron up icon

Cancellation Policy for Published Printed Books:

You can cancel any order within 1 hour of placing the order. Simply contact [email protected] with your order details or payment transaction id. If your order has already started the shipment process, we will do our best to stop it. However, if it is already on the way to you then when you receive it, you can contact us at [email protected] using the returns and refund process.

Please understand that Packt Publishing cannot provide refunds or cancel any order except for the cases described in our Return Policy (i.e. Packt Publishing agrees to replace your printed book because it arrives damaged or material defect in book), Packt Publishing will not accept returns.

What is your returns and refunds policy? Chevron down icon Chevron up icon

Return Policy:

We want you to be happy with your purchase from Packtpub.com. We will not hassle you with returning print books to us. If the print book you receive from us is incorrect, damaged, doesn't work or is unacceptably late, please contact Customer Relations Team on [email protected] with the order number and issue details as explained below:

  1. If you ordered (eBook, Video or Print Book) incorrectly or accidentally, please contact Customer Relations Team on [email protected] within one hour of placing the order and we will replace/refund you the item cost.
  2. Sadly, if your eBook or Video file is faulty or a fault occurs during the eBook or Video being made available to you, i.e. during download then you should contact Customer Relations Team within 14 days of purchase on [email protected] who will be able to resolve this issue for you.
  3. You will have a choice of replacement or refund of the problem items.(damaged, defective or incorrect)
  4. Once Customer Care Team confirms that you will be refunded, you should receive the refund within 10 to 12 working days.
  5. If you are only requesting a refund of one book from a multiple order, then we will refund you the appropriate single item.
  6. Where the items were shipped under a free shipping offer, there will be no shipping costs to refund.

On the off chance your printed book arrives damaged, with book material defect, contact our Customer Relation Team on [email protected] within 14 days of receipt of the book with appropriate evidence of damage and we will work with you to secure a replacement copy, if necessary. Please note that each printed book you order from us is individually made by Packt's professional book-printing partner which is on a print-on-demand basis.

What tax is charged? Chevron down icon Chevron up icon

Currently, no tax is charged on the purchase of any print book (subject to change based on the laws and regulations). A localized VAT fee is charged only to our European and UK customers on eBooks, Video and subscriptions that they buy. GST is charged to Indian customers for eBooks and video purchases.

What payment methods can I use? Chevron down icon Chevron up icon

You can pay with the following card types:

  1. Visa Debit
  2. Visa Credit
  3. MasterCard
  4. PayPal
What is the delivery time and cost of print books? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela