使用CMake构建复杂工程

1 // so1/so1.c
2 int add_fun(int a, int b)
3 {
4     return a+b;
5 }

1 // so1.h
2 #ifndef _so1_h_
3 #define _so1_h_
4 
5 int add_fun(int a, int b);
6 int fun_test(int a);
7 
8 #endif//_so1_h_

 1 // so2/so2.h
 2 #include <stdio.h>
 3 #include <stdlib.h>
 4 #include "so1.h"
 5 
 6 int fun_test(int a)
 7 {
 8     for (int i=0; i<a; ++i)
 9     {
10         printf("add_fun(%d+%d)=%d\n", i, i, add_fun(i, i));
11     }
12     
13     return 0;
14 }

 1 // test/test.c
 2 #include <stdio.h>
 3 #include <stdlib.h>
 4 
 5 #include "so1.h"
 6 
 7 int main(int argc, char **argv)
 8 {
 9     return fun_test(9);
10 }

 1 # ./CMakeLists.txt，工程总配置文件
 2 
 3 # 最低版本要求，必须
 4 cmake_minimum_required(VERSION 3.0)
 5 
 6 # 工程名称，这里用soTest这个名字
 7 project(soTest)
 8 
 9 # 添加include目录，本例头文件在./目录下，所以直接取${PROJECT_SOURCE_DIR}/
10 include_directories(${PROJECT_SOURCE_DIR}/)
11 
12 # 添加链接库查找目录，库查找序按照参数顺序从向右查
13 link_directories(${PROJECT_BINARY_DIR}/libs /usr.local/libs /usr/lib)
14 
15 # 设置生成的库文件目录，这里我们设置成和库目录相同
16 set(LIBRARY_OUTPUT_PATH ${PROJECT_BINARY_DIR}/libs)
17 
18 # 设置可执行文件目录，同样设成和库目录相同
19 set(EXECUTABLE_OUTPUT_PATH ${PROJECT_BINARY_DIR}/libs)
20 
21 # 添加子目录（每个子目录下都必须有自已的CMakeLists.txt文件
22 add_subdirectory(so1)
23 add_subdirectory(so2)
24 add_subdirectory(test)

# ./so1/CMakeLists.txt
# project name: soTest
project(soTest)

# set source files
set(so1 so1.c)

# set make to a shared library
add_library(so1 SHARED ${so1})

 1 # ./so2/CMakeLists.txt
 2 
 3 project(soTest)
 4 set(so2 so2.c)
 5 add_library(so2 SHARED ${so2})
 6 
 7 # link so1
 8 target_link_libraries(so2 so1)

1 project(soTest)
2 set(st test.c)
3 
4 # 生成可执行文件
5 add_executable(st test.c)
6 target_link_libraries(st so2 so1)

cmake .. && make && ./libs/st