g++编译boost::asio时错误(boost service)

  service.cpp                                                                        

#include <iostream>

#include <boost/asio.hpp>

using namespace std;

using boost::asio::ip::tcp;

int main ()

{

    try

    {

    //

        boost::asio::io_service ioservice;

        tcp::acceptoraccept(ioservice,tcp::endpoint(tcp::v4(),6688));

        while(true)

        {

            tcp::socket sock(ioservice);

            accept.accept(sock);

            cout<<sock.remote_endpoint().address()<<endl;

            sock.write_some(boost::asio::buffer("hello pig"));

        }

    }

    catch(exception&e)

    {

        cerr<<e.what()<<endl;

    }

    return 0;

}

/tmp/ccSU1pc4.o: In function`__static_initialization_and_destruction_0(int, int)':

service.cpp:(.text+0x22f): undefined reference to`boost::system::generic_category()'

service.cpp:(.text+0x239): undefined reference to`boost::system::generic_category()'

service.cpp:(.text+0x243): undefined reference to`boost::system::system_category()'

/tmp/ccSU1pc4.o: In function`boost::system::error_code::error_code()':

service.cpp:(.text._ZN5boost6system10error_codeC2Ev[_ZN5boost6system10error_codeC5Ev]+0x10):undefined reference to `boost::system::system_category()'

/tmp/ccSU1pc4.o: In function`boost::asio::error::get_system_category()':

service.cpp:(.text._ZN5boost4asio5error19get _system_categoryEv[boost::asio::error::get_system_category()]+0x7):undefined reference to `boost::system::system_category()'

/tmp/ccSU1pc4.o: In function`boost::asio::detail::posix_tss_ptr_create(unsignedint&)':

service.cpp:(.text._ZN5boost4asio6detail20po six_tss_ptr_createERj[boost::asio::detail::posix_tss_ptr_create(unsignedint&)]+0x15): undefined reference to`pthread_key_create'

/tmp/ccSU1pc4.o: In function`boost::asio::detail::posix_tss_ptr<boost::asio::detail::call_stack<boost::asio::detail::task_io_service>::context>::~posix_tss_ptr()':

service.cpp:(.text._ZN5boost4asio6detail13po six_tss_ptrINS1_10call_stackINS1_15task_io_serviceEE7contextEED2Ev[_ZN5boost4asio6detail13po six_tss_ptrINS1_10call_stackINS1_15task_io_serviceEE7contextEED5Ev]+0xf):undefined reference to `pthread_key_delete'

/tmp/ccSU1pc4.o: In function`boost::asio::detail::posix_tss_ptr<boost::asio::detail::call_stack<boost::asio::detail::strand_service::strand_impl>::context>::~posix_tss_ptr()':

service.cpp:(.text._ZN5boost4asio6detail13po six_tss_ptrINS1_10call_stackINS1_14strand_service11strand_implEE7contextEED2Ev[_ZN5boost4asio6detail13po six_tss_ptrINS1_10call_stackINS1_14strand_service11strand_implEE7contextEED5Ev]+0xf):undefined reference to `pthread_key_delete'

collect2: ld 返回 1