Undefined reference to boost::thread in Qt - qt

Question

I'm trying to create a boost::thread application in Qt.
Here is my code:
#include <iostream>
#include "boost/thread.hpp"
#include "boost/bind.hpp"
using namespace std;
class A {
public:
void tf() {
for (int i = 0; i < 100; ++i) {
cout << i << endl;
}
}
};
int main()
{
boost::shared_ptr<A> aPtr;
cout << "Hello World!" << endl;
boost::thread t = boost::thread(boost::bind(&A::tf, aPtr.get()));
cout << "Thread started" << endl;
return 0;
}
And the corresponding .pro file:
TEMPLATE = app
CONFIG += console
CONFIG -= qt
LIBS += -L"C:/Program Files (x86)/boost/boost_1_49/lib"
DEPENDPATH += "C:/Program Files (x86)/boost/boost_1_49"
INCLUDEPATH += "C:/Program Files (x86)/boost/boost_1_49"
SOURCES += main.cpp
When i try to compile it i get:
{{path}}\main.cpp:21: error: undefined reference to `_imp___ZN5boost6threadD1Ev'
{{path}}\main.o:-1: In function `ZN5boost6threadC1INS_3_bi6bind_tIvNS_4_mfi3mf0Iv1AEENS2_5list1INS2_5valueIPS6_EEEEEEEET_NS_10disable_ifINS_14is_convertibleIRSE_NS_6detail13thread_move_tISE_EEEEPNS0_5dummyEE4typeE':
c:\Program Files (x86)\boost\boost_1_49\boost\thread\detail\thread.hpp:205: error: undefined reference to `_imp___ZN5boost6thread12start_threadEv'
collect2.exe:-1: error: error: ld returned 1 exit status
Whats the problem?
What am i missing?
M.

Answer 1

You aren't linking to the Boost Thread library, you are just telling Qt where it is.
LIBS += -L"C:/Program Files (x86)/boost/boost_1_49/lib" -lboost_thread