提升线程错误：未定义的引用

Question

#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;
}

我试图编译这个程序，并得到这些错误：

/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()'

谁能告诉我为什么我会收到这个错误？

Answer 1

用mt标签编译，即-lboost_thread-mt

Answer 2

许多boost库完全在头文件中实现。 Boost.thread不是。它似乎没有在boost线程库中链接。检查链接器搜索路径。或者，正如Stargazer712对OP的评论所说，检查安装。您应该在lib目录中看到类似libboost_thread-gcc-xxx-1_nn.o的内容。如果是这样，请尝试在链接步骤中明确引用它（类似于-L<path_to_lib> -lboost-thread-gcc-xx-1_nn）。如果没有，那么你显然没有完整的安装。

Answer 3

我有同样的问题，但-lboost_thread-mt现已弃用，请参阅askubuntu.com上的this answer。相反，你现在想要的makefile（至少对于linux）是：

-lpthread -lboost_thread ...

Boost简单地让您负责链接到系统的线程库。

Answer 4

编译povray 3.7时我有一个与centos 6.5类似的问题，这解决了它 - 只需在你的-lboost_thread-mt中添加Makefile。

Answer 5

添加编译选项

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

格雷格的回答是对的！

Answer 6

我有同样的错误。我用-lboost_thread修复了它的编译