Cmake development - Multi Directory Project

A single file ：

First step ： establish CmakeLists.txt file

The second step ： To write CmakeLists

#  Set minimum version 
cmake_minimum_required(VERSION 3.0)

#  Set project name 
project (SWAP)

# Set header file path 
include_directories( include )

# Add variables 
set(TEST_MATH main.cpp src/swap.cpp)
  
# Generate executable files  
add_executable(swap_02 ${
    TEST_MATH})

The third step ： function

# 1.  In the current directory , establish build Folder 
mkdir build 
# 2.  Enter into build Folder 
cd build
# 3.  Compile the parent directory CMakeLists.txt, Generate Makefile And other documents 
cmake ..
# 4.  perform make command , Generate target
make