Hi,

I’m new to Boost, I’ve been trying to use the Thread library that boost offers. I’m on a Kubuntu 7.1 box using G++ 4.1 Compiler with Boost 1.34. I’ve only been successful compiling my project when including libboost_thread-gcc41-mt-d.so library file. I would much rather use the .a file however, If I try to use the libboost_thread-gcc41-mt-d.a library file, i get the following errors:

/home/andresh/DVRTranslators/Boost/lib/libboost_thread-gcc41-mt-d.a(thread.o): In function `boost::thread::join()':

/home/andresh/DVRTranslators/Boost/boost_1_34_1/libs/thread/src/thread.cpp:226: undefined reference to `pthread_join'

/home/andresh/DVRTranslators/Boost/lib/libboost_thread-gcc41-mt-d.a(thread.o): In function `~thread':

/home/andresh/DVRTranslators/Boost/boost_1_34_1/libs/thread/src/thread.cpp:191: undefined reference to `pthread_detach'

/home/andresh/DVRTranslators/Boost/boost_1_34_1/libs/thread/src/thread.cpp:191: undefined reference to `pthread_detach'

/home/andresh/DVRTranslators/Boost/lib/libboost_thread-gcc41-mt-d.a(thread.o): In function `thread':

/home/andresh/DVRTranslators/Boost/boost_1_34_1/libs/thread/src/thread.cpp:156: undefined reference to `pthread_create'

/home/andresh/DVRTranslators/Boost/boost_1_34_1/libs/thread/src/thread.cpp:156: undefined reference to `pthread_create'

/home/andresh/DVRTranslators/Boost/lib/libboost_thread-gcc41-mt-d.a(mutex.o): In function `boost::try_mutex::do_trylock()':

/home/andresh/DVRTranslators/Boost/boost_1_34_1/libs/thread/src/mutex.cpp:260: undefined reference to `pthread_mutex_trylock'

collect2: ld returned 1 exit status

make: *** [listener] Error 1

I’ve used the Regex and Filesystem .a library files without a problem, but the Thread .a library file won’t work.

Here is my code:

#include <boost/thread/thread.hpp>

#include <iostream>

void helloworld()

{

    std::cout << "Hello World!" << std::endl;

}

int main()

{

       std::cout << "STARTING ";

    boost::thread thrd(&helloworld);

    thrd.join();

       helloworld();

       return 0;

}

Here is my MakeFile:

all: listener

listener: TestBoost.cpp

       g++ TestBoost.cpp -o listener -I /home/andresh/DVRTranslators/Boost/include/boost-1_34_1/ /home/andresh/DVRTranslators/Boost/lib/libboost_thread-gcc41-mt-d.a

Any help is greatly appreciated. If you need any more information please ask, I want to try and get this problem resolved soon.

Thanks,

Andres