process/example/intro_popen.cpp at develop · boostorg/process

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// Distributed under the Boost Software License, Version 1.0. (See accompanying

// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#include <boost/core/ignore_unused.hpp>

//[intro

#include <boost/process.hpp>

#include <boost/asio/read.hpp>

#include <boost/asio/readable_pipe.hpp>

#include <boost/system/error_code.hpp>

#include <string>

#include <iostream>

namespace proc = boost::process;

namespace asio = boost::asio;

int main()

{

asio::io_context ctx;

const auto exe = proc::environment::find_executable("gcc");

proc::popen c{ctx, exe, {"--version"}};

std::string line;

boost::system::error_code ec;

auto sz = asio::read(c, asio::dynamic_buffer(line), ec);

assert(ec == asio::error::eof);

boost::ignore_unused(sz);

std::cout << "Gcc version: '" << line << "'" << std::endl;

c.wait();

return c.exit_code();

}

//]

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