最简单的cmake例子

 # In CMakeLists.txt:
 cmake_minimum_required(VERSION 3.5)
 project(MyProject)
 add_executable(my_exec src1.cpp, src2.cpp src3.cpp)

https://www.reddit.com/r/cpp/comments/bnkxe7/at_what_point_do_i_need_cmake_for_my_c_projects/