CMake Cookbook

How to do it

We wish to check whether the UUID system library on GNU/Linux can be linked against, before embarking on building our own C++ project. This can be achieved with the following series of steps:

1. We start by declaring a mixed C and C++11 program. This is needed since the test code snippet we want to compile and run is in the C language:

cmake_minimum_required(VERSION 3.6 FATAL_ERROR)  project(recipe-08 LANGUAGES CXX C)

set(CMAKE_CXX_STANDARD 11)set(CMAKE_CXX_EXTENSIONS OFF)set(CMAKE_CXX_STANDARD_REQUIRED ON)

2. We need to find the UUID library on our system. This is achieved by using pkg-config. We ask for the search to return a CMake imported target using the IMPORTED_TARGET argument:

find_package(PkgConfig REQUIRED QUIET)pkg_search_module(UUID ...