Book Image

CMake Cookbook

By : Radovan Bast, Roberto Di Remigio
Book Image

CMake Cookbook

By: Radovan Bast, Roberto Di Remigio

Overview of this book

CMake is cross-platform, open-source software for managing the build process in a portable fashion. This book features a collection of recipes and building blocks with tips and techniques for working with CMake, CTest, CPack, and CDash. CMake Cookbook includes real-world examples in the form of recipes that cover different ways to structure, configure, build, and test small- to large-scale code projects. You will learn to use CMake's command-line tools and master modern CMake practices for configuring, building, and testing binaries and libraries. With this book, you will be able to work with external libraries and structure your own projects in a modular and reusable way. You will be well-equipped to generate native build scripts for Linux, MacOS, and Windows, simplify and refactor projects using CMake, and port projects to CMake.
Table of Contents (18 chapters)

Controlling compiler flags

The code for this recipe is available at and has a C++ example. The recipe is valid with CMake version 3.5 (and higher) and has been tested on GNU/Linux, macOS, and Windows.

The previous recipes showed how to probe CMake for information on the compilers and how to tune compiler optimizations for all targets in your project. The latter task is a subset of the general need to control which compiler flags are used in your project. CMake offers a lot of flexibility for adjusting or extending compiler flags and you can choose between two main approaches:

  • CMake treats compile options as properties of targets. Thus, one can set compile options on a per target basis, without overriding CMake defaults.
  • You can directly modify the CMAKE_<LANG>_FLAGS_<CONFIG> variables by using...