CMakeLists.txt使用boost库

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1.实例代码example.cpp

#include <boost/regex.hpp>
#include <iostream>
#include <string>

int main()
{
    std::string line;
    boost::regex pat( "^Subject: (Re: |Aw: )*(.*)" );

    while (std::cin)
    {
        std::getline(std::cin, line);
        boost::smatch matches;
        if (boost::regex_match(line, matches, pat))
            std::cout << matches[2] << std::endl;
    }
}

2.CMakeLists.txt配置如下

cmake_minimum_required(VERSION 3.13)
project(boost_demo)
set(CMAKE_CXX_STANDARD 14)

#导入需要使用的boost库，如regex filesystem thread
find_package(Boost REQUIRED COMPONENTS regex)
if (NOT Boost_FOUND)
    message("Not found Boost")
endif ()
#导入头文件
include_directories(${Boost_INCLUDE_DIRS})
message("${Boost_INCLUDE_DIRS}")
#导入库文件
link_libraries(${Boost_LIBRARIES})
message("${Boost_LIBRARIES}")

add_executable(boost_demo example.cpp)

官方参考：
https://cmake.org/cmake/help/v3.0/module/FindBoost.html