Boost thread error: undefined reference

问题

#include <boost/thread/thread.hpp>
#include <iostream>

void hello()
{
  std::cout <<
    "Hello world, I'm a thread!"
    << std::endl;
}

int main(int argc, char* argv[])
{
  boost::thread thrd(&hello);
  thrd.join();
  return 0;
}

I ran tried to compile this program, and got these errors:

/usr/include/boost/thread/pthread/mutex.hpp:40: undefined reference to
   `boost::thread_resource_error::thread_resource_error()'
/usr/include/boost/thread/pthread/mutex.hpp:40: undefined reference to 
   `boost::thread_resource_error::~thread_resource_error()'
/usr/include/boost/thread/pthread/mutex.hpp:40: undefined reference to 
   `typeinfo for boost::thread_resource_error'
./src/thread.o: In function `condition_variable':
/usr/include/boost/thread/pthread/condition_variable_fwd.hpp:33: 
  undefined reference to `boost::thread_resource_error::thread_resource_error()'
/usr/include/boost/thread/pthread/condition_variable_fwd.hpp:33: 
  undefined reference to `boost::thread_resource_error::~thread_resource_error()'
/usr/include/boost/thread/pthread/condition_variable_fwd.hpp:33: \
  undefined reference to `typeinfo for boost::thread_resource_error'
./src/thread.o: In function `thread_data_base':
/usr/include/boost/thread/pthread/thread_data.hpp:54: 
  undefined reference to `vtable for boost::detail::thread_data_base'
./src/thread.o: In function `thread<void (*)()>':
/usr/include/boost/thread/detail/thread.hpp:188: 
  undefined reference to `boost::thread::start_thread()'
./src/thread.o: In function `~thread_data':
/usr/include/boost/thread/detail/thread.hpp:40: 
  undefined reference to `boost::detail::thread_data_base::~thread_data_base()'
/usr/include/boost/thread/detail/thread.hpp:40: undefined reference to 
  `boost::detail::thread_data_base::~thread_data_base()'

Can any one tell me why i am getting this error?

回答1:

compile with mt tag i.e -lboost_thread-mt

回答2:

Many boost libraries are fully implemented in header files. Boost.thread is not. It seems that it is not linking in the boost thread library. Check your linker search paths. Or, as the Stargazer712's comment on the OP says, check the installation. You should see something like libboost_thread-gcc-xxx-1_nn.o in your lib directory. If so, try referencing it explicitly in your link step (something like -L<path_to_lib> -lboost-thread-gcc-xx-1_nn). If not, then you apparently don't have a complete installation.

回答3:

I had the same question, but -lboost_thread-mt is now deprecated see this answer on askubuntu.com. Instead what you now want in your makefile (at least for linux) is:

-lpthread -lboost_thread ...

Boost has simply given you the responsibility to link to your system's thread library.

回答4:

I had a similar problem with centos 6.5 when compiling povray 3.7 and this solved it - just add -lboost_thread-mt in your Makefile.

回答5:

add compile option

-L<path_to_lib> -lboost-thread-gcc-xx-1_nn

gregg's answer is right!

回答6:

I had the same error. I fixed it compiling with -lboost_thread

来源：https://stackoverflow.com/questions/3584365/boost-thread-error-undefined-reference

标签

c++

boost

boost-thread