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)

Reproducing compiler flags

Let us now try to adjust the compiler flags to mirror the reference build.

Defining compiler flags

So far, we have not defined any custom compiler flags, but from the reference Autotools build, we remember that the code was compiled with -g -U_FORTIFY_SOURCE
using the GNU C compiler.

Our first approach could be to define the following:


And, we would place this code on top of src/CMakeLists.txt, right before generating source files (since pathdef.c uses ${CMAKE_C_FLAGS}):

# <- we will define flags right here