C++ linker error using Boost Thread - c++

Question

Attempting to build a standard Boost::thread example I found on the internet, I get multiple errors thrown by the Boost header file thread_data.hpp, which I don't link to directly but which I presume gets linked by Boost. (I also get the same errors in my actual program, but I am using the example code to ensure it's not a problem with my code.)
Here is the example code I found in a boost::thread tutorial:
#include <iostream>
#include <boost/thread.hpp>
#include <boost/date_time.hpp>
void workerFunc()
{
boost::posix_time::seconds workTime(3);
std::cout << "Worker: running" << std::endl;
// Pretend to do something useful...
boost::this_thread::sleep(workTime);
std::cout << "Worker: finished" << std::endl;
}
int main(int argc, char* argv[])
{
std::cout << "main: startup" << std::endl;
boost::thread workerThread(workerFunc);
std::cout << "main: waiting for thread" << std::endl;
workerThread.join();
std::cout << "main: done" << std::endl;
return 0;
}
Here is my build command:
mingw32-g++.exe -LC:\projects\boost\lib -o bin\Debug\Guardian.exe obj\Debug\Scratch.o -lboost_filesystem-mgw47-mt-1_53 -lboost_date_time-mgw47-mt-1_53 -lboost_system-mgw47-mt-1_53 -lboost_thread-mgw47-mt-1_53
(Notice that I am linking the boost.thread library.)
Here is the first error thrown:
C:\projects\boost\include\boost-1_53\boost\thread\win32\thread_data.hpp|123|undefined reference to `_imp___ZTVN5boost6detail16thread_data_baseE'|
In CodeBlocks I get pointed to line 123 of the header file thread_data.hpp as the source of the error:
//#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
, interruption_handle(create_anonymous_event(detail::win32::manual_reset_event,detail::win32::event_initially_reset))
, interruption_enabled(true)
Have I forgotten to link a library? I've been using Boost without problems, until now I'm trying to use the thread library. I'm new to Boost and don't know what could be causing the error.

Answer 1

Try add -lpthread to the linker.