cmake 添加子库

cmake 添加子库

文件目录

• http_lib2
  • testlib
    • CMakeLists.txt
    • Test.cpp
    • Test.h
  • CMakeLists.txt
  • main.cpp

文件如下

• main.cpp

#include <iostream>
#include "Test.h"

using namespace std;

int main(){

    Test test;
    std::cout << test.add() <<endl;
    while (true)
    {
        /* code */
    }
    

    return 0;
}

• CMakeLists.txt

# CMake 最低版本号要求
cmake_minimum_required (VERSION 3.16)

# 项目信息
project (httplib2)

# Add the source in project root directory
aux_source_directory(. DIRSRCS)
# Add header file include directories
include_directories(./ ./testlib)
# Add block directories
add_subdirectory(testlib)
# Target
add_executable(httplib2 ${DIRSRCS})
target_link_libraries(httplib2 testlib)

• testlib/CMakeLists.txt

# Add header file include directories
file(GLOB_RECURSE CURRENT_HEADERS  *.h)
source_group("Include" FILES ${CURRENT_HEADERS})
aux_source_directory(. DIR_HELLO_SRCS)
add_library(testlib ${DIR_HELLO_SRCS} ${CURRENT_HEADERS})

• testlib/Test.cpp

#include "Test.h"

int Test::add(){

    return 9;
}

• testlib/Test.h

#pragma once
#define DllExport   __declspec( dllexport )//宏定义
#ifndef Test_H 
#define Test_H 
#include <iostream> 
using namespace std;
class DllExport Test //要生成dll必须加上这个宏，否则会出错
{
public:
	int add();
};

#endif