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Embedded Linux Projects Using Yocto Project Cookbook

You're reading from   Embedded Linux Projects Using Yocto Project Cookbook Over 70 hands-on recipes for professional embedded Linux developers to optimize and boost their Yocto know-how

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Product type Hardcover
Published in Jan 2018
Last Updated in Feb 2025
Publisher
ISBN-13 9781788399210
Length 456 pages
Edition 1st Edition
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Author (1):
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Alex Gonzalez Alex Gonzalez
Author Profile Icon Alex Gonzalez
Alex Gonzalez
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Toc

Table of Contents (7) Chapters Close

Preface 1. The Build System FREE CHAPTER 2. The BSP Layer 3. The Software Layer 4. Application Development 5. Debugging, Tracing, and Profiling 6. Other Books You May Enjoy

Developing with libraries


Most applications make use of shared libraries, which saves system memory and disk space, as they are shared between different applications. Modularizing code into libraries also allows for easier versioning and code management, as well as independent updates from the applications that use them. This recipe will explain how to work with both static and shared libraries.

Getting ready

By convention, library files start with the lib prefix. All libraries need to be explicitly passed to the linker so that they are used, except libc which will be automatically linked. There are basically two library types:

  • Static libraries (.a): When the object code is linked and becomes part of the application.
  • Dynamic libraries (.so): These are linked at compile time but not included in the application, so they need to be available at runtime. Multiple applications can share a dynamic library so they need less disk space.

Libraries are typically placed in the following standard root filesystem...

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Embedded Linux Projects Using Yocto Project Cookbook
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