CMake Cookbook

How to do it

We will build up the CMakeLists.txt file step by step:

1. We start out by defining the minimum CMake version and project name. Note that for this example we will not need any language support:

cmake_minimum_required(VERSION 3.5 FATAL_ERROR)project(recipe-01 LANGUAGES NONE)

2. Then, we use the find_package command to find the Python interpreter:

find_package(PythonInterp REQUIRED)

3. Then, we execute a Python command and capture its output and return value:

execute_process(  COMMAND    ${PYTHON_EXECUTABLE} "-c" "print('Hello, world!')"  RESULT_VARIABLE _status  OUTPUT_VARIABLE _hello_world  ERROR_QUIET  OUTPUT_STRIP_TRAILING_WHITESPACE  )

4. Finally, we print the return value and the output of the Python command:

message(STATUS "RESULT_VARIABLE ...