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CMake Best Practices

CMake Best Practices - Second Edition

By : Berner, Mustafa Kemal Gilor
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CMake Best Practices

CMake Best Practices

By: Berner, Mustafa Kemal Gilor

Overview of this book

Discover the cutting-edge advancements in CMake with the new edition of CMake Best Practices. This book focuses on real-world applications and techniques to leverage CMake, avoiding outdated hacks and overwhelming documentation. You’ll learn how to use CMake presets for streamlined project configurations and embrace modern package management with Conan 2.0. Covering advanced methods to integrate third-party libraries and optimize cross-platform builds, this updated edition introduces new tools and techniques to enhance software quality, including testing frameworks, fuzzers, and automated documentation generation. Through hands-on examples, you’ll become proficient in structuring complex projects, ensuring that your builds run smoothly across different environments. Whether you’re integrating tools for continuous integration or packaging software for distribution, this book equips you with the skills needed to excel in modern software development. By the end of the book, you’ll have mastered setting up and maintaining robust software projects using CMake to streamline your development workflow and produce high-quality software.
Table of Contents (22 chapters)
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1
Part 1 – The Basics
5
Part 2 – Practical CMake – Getting Your Hands Dirty with CMake
14
Part 3 – Mastering the Details

Using sysroots to isolate build environments

In a nutshell, a sysroot is a directory that a build system considers to be the root directory from which to locate headers and libraries. In brief, they contain a stripped-down version of the root filesystem for the platform for which software is being compiled. They are often used when cross-compiling software for other platforms, as described in Chapter 12, Cross-Platform Compiling and Custom Toolchains. If containers for shipping whole build environments are not an option, sysroots can be an alternative to provide a defined build environment.

To use a sysroot with CMake, a toolchain file is needed. As the name suggests, these files define the tools to use to compile and link the software as well as indicating where to find any libraries. In a normal build, CMake automatically detects the toolchain by introspecting the system. Toolchain files are passed to CMake with the CMAKE_TOOLCHAIN_FILE variable like this:

cmake -S <source_dir...
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CMake Best Practices
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