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Modern CMake for C++

Modern CMake for C++

By : Rafał Świdziński
4.2 (23)
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Modern CMake for C++

Modern CMake for C++

4.2 (23)
By: Rafał Świdziński

Overview of this book

Creating top-notch software is an extremely difficult undertaking. Developers researching the subject have difficulty determining which advice is up to date and which approaches have already been replaced by easier, better practices. At the same time, most online resources offer limited explanation, while also lacking the proper context and structure. This book offers a simpler, more comprehensive, experience as it treats the subject of building C++ solutions holistically. Modern CMake for C++ is an end-to-end guide to the automatization of complex tasks, including building, testing, and packaging. You'll not only learn how to use the CMake language in CMake projects, but also discover what makes them maintainable, elegant, and clean. The book also focuses on the structure of source directories, building targets, and packages. As you progress, you’ll learn how to compile and link executables and libraries, how those processes work, and how to optimize builds in CMake for the best results. You'll understand how to use external dependencies in your project – third-party libraries, testing frameworks, program analysis tools, and documentation generators. Finally, you'll get to grips with exporting, installing, and packaging for internal and external purposes. By the end of this book, you’ll be able to use CMake confidently on a professional level.
Table of Contents (18 chapters)
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1
Section 1: Introducing CMake
5
Section 2: Building With CMake
10
Section 3: Automating With CMake

Managing the process of compilation

As programmers and build engineers, we need to consider the other aspects of compilation as well – the time it takes to complete, and how easy it is to spot and fix mistakes made during the process of building a solution.

Reducing compilation time

In busy projects that require many dozens of recompilations per day (or per hour), it's paramount that compilation is as quick as possible. This not only affects how tight your code-compile-test loop is but also affects your concentration and flow of work. Luckily, C++ is already pretty good at managing compilation time, thanks to separate translation units. CMake will take care of recompiling only sources that were impacted by recent changes. However, if we need to improve things even more, there are a couple of techniques we can use – header precompilation and unity builds.

Precompilation of headers

Header files (.h) are included in the translation unit by the preprocessor...

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