как в QtCreator подключить Boost::asio?

TEMPLATE = app
CONFIG += console c++11
CONFIG -= app_bundle
CONFIG -= qt
INCLUDEPATH += /usr/include/boost148
SOURCES += main.cpp

include <iostream>
#include <boost148/boost/array.hpp>
#include <boost148/boost/asio.hpp>
#include <boost148/boost/date_time/posix_time/posix_time.hpp>

using std::cout;
using std::endl;
using namespace boost::asio;

int main()
{
        io_service io;

        deadline_timer t(io, boost::posix_time::seconds(5));
        t.wait();
        cout << "Hello, World!" << endl;


        return 0;
}

undefined reference to boost::system::generic_category()
undefined reference to boost::system::generic_category()
undefined reference to boost::system::generic_category()
undefined reference to boost::system::generic_category()
undefined reference to boost::system::generic_category()
undefined reference to pthread_key_create
undefined reference to pthread_key_delete

...
...

LIBS += -lboost_system