MSYS2 CMake + Boost Program Options

01-msys.sh

$ pacman -S cmake make mingw-w64-x86_64-gcc mingw-w64-x86_64-boost

02-CMakeLists.txt

cmake_minimum_required(VERSION 3.0)
project(test CXX)

find_package(Boost COMPONENTS program_options REQUIRED)

add_executable(test test.cpp)
target_include_directories(test PRIVATE ${Boost_INCLUDE_DIRS})
target_link_libraries(test ${Boost_LIBRARIES})

03-test.cpp

#include <boost/program_options.hpp>
#include <iostream>

namespace po = boost::program_options;

int main(int argc, char *argv[]) {
    try {
        po::options_description desc("Allowed Options");
        desc.add_options()
            ("help", "shows the help page")
            ("compression", po::value<int>(), "set compression level")
        ;
        po::variables_map vm;
        po::store(po::parse_command_line(argc, argv, desc), vm);
        po::notify(vm);

        if (vm.count("help")) {
            std::cout << desc << std::endl;
            return 0;
        }

        if (vm.count("compression")) {
            std::cout << "Compression level was set to "
            << vm["compression"].as<int>() << "." << std::endl;
        } else {
            std::cout << "Compression level was not set." << std::endl;
        }
    } catch(...) {
        std::cerr << "caugth a error.\n";
        return -1;
    }
}

04-build.sh

$ export "PATH=/mingw64/bin:$PATH"
$ cmake .
$ make
$ ./test --help