cmake的add_subdirectory

命令格式

    add_subdirectory (source_dir [binary_dir] [EXCLUDE_FROM_ALL])
    添加一个子目录并构建该子目录。

如果想同时编译多个CmakeLists.txt 可以使用add_subdirectory

test/CMakeLists.txt

cmake_minimum_required(VERSION 3.7.1)

project(hello)


add_subdirectory(hello1)
add_subdirectory(hello2)

test/hello1/CMakeLists.txt

PROJECT(HELLO1) 
add_executable(hello1 main1.c)

test/hello1/main.c1

//main.c1 
#include<stdio.h>
int main()
{
     printf("Hello World from t1 Main!\n");
     return 0;
}

test/hello2/CMakeLists.txt

PROJECT(HELLO2) 
add_executable(hello2 main2.c)

test/hello1/main.c2

//main.c2
#include<stdio.h>
int main()
{
     printf("Hello World from t2 Main!\n");
     return 0;
}

编译test/CMakeLists.txt

cmake test/CMakeLists.txt
make