cmake tutorial https://cmake.org/cmake/help/book/mastering-cmake/cmake/Help/guide/tutorial/index.html
#step1: cmake项目的最小配置：
cmake_minimum_required(VERSION 3.10) #set the project name project(Tutorial) #add the executable add_executable(Tutorial tutorial.cpp)
mkdir build cd build cmake -G "Ninja" ..
cmake --build .
./Tutorial 6
目录结构： step1/ build/ CMakeLists.txt tutorial.cpp
#step2: 优化 CMakeLists.txt 文件
目录： step2/ build/ CMakeLists.txt tutorial.cpp TutorialConfig.h.in
#step3: 添加库