我正在尝试使用Boost的Asio构建项目，但遇到了一些麻烦。最初，我试图在没有任何其他库的情况下构建项目，因为所有内容都应该放在头文件中。

我尝试构建的程序如下所示：

#include

#include

#include

int main()

{

boost::asio::io_service io;

boost::asio::deadline_timer t(io, boost::posix_time::seconds(5));

t.wait();

std::cout << "Hello, world!" << std::endl;

return 0;

}

可以发现这里在加速的网站。

因此，最初我只有：

-I /usr/include/boost_1_40_0

这导致以下错误：

make -k all

Building target: HelloWorld

Invoking: GCC C++ Linker

g++ -o"HelloWorld" ./main.o

./main.o: In function `__static_initialization_and_destruction_0':

/usr/include/boost_1_40_0/boost/system/error_code.hpp:205: undefined reference to `boost::system::get_system_category()'

/usr/include/boost_1_40_0/boost/system/error_code.hpp:206: undefined reference to `boost::system::get_generic_category()'

/usr/include/boost_1_40_0/boost/system/error_code.hpp:211: undefined reference to `boost::system::get_generic_category()'

/usr/include/boost_1_40_0/boost/system/error_code.hpp:212: undefined reference to `boost::system::get_generic_category()'

/usr/include/boost_1_40_0/boost/system/error_code.hpp:213: undefined reference to `boost::system::get_system_category()'

./main.o: In function `boost::asio::error::get_system_category()':

/usr/include/boost_1_40_0/boost/asio/error.hpp:218: undefined reference to `boost::system::get_system_category()'

./main.o: In function `error_code':

/usr/include/boost_1_40_0/boost/system/error_code.hpp:312: undefined reference to `boost::system::get_system_category()'

./main.o: In function `posix_tss_ptr':

/usr/include/boost_1_40_0/boost/asio/detail/posix_tss_ptr.hpp:47: undefined reference to `pthread_key_create'

./main.o: In function `~posix_tss_ptr':

/usr/include/boost_1_40_0/boost/asio/detail/posix_tss_ptr.hpp:61: undefined reference to `pthread_key_delete'

./main.o: In function `boost::asio::detail::posix_thread::join()':

/usr/include/boost_1_40_0/boost/asio/detail/posix_thread.hpp:77: undefined reference to `pthread_join'

./main.o: In function `~posix_thread':

/usr/include/boost_1_40_0/boost/asio/detail/posix_thread.hpp:69: undefined reference to `pthread_detach'

collect2: ld returned 1 exit status

make: *** [HelloWorld] Error 1

make: Target `all' not remade because of errors.

看来我需要系统库。因此，我按照此处的入门指南中的说明进行操作，该指南为我提供了位于 / usr / include / boost_1_40_0 / stage

/ lib中 的一堆库。其中包括 libboost_system.a 。因此，我尝试编译为：

-I /usr/include/boost_1_40_0

-L /usr/include/boost_1_40_0/stage/lib

-l libboost_system

但是，我得到了：

make -k all

Building target: HelloWorld

Invoking: GCC C++ Linker

g++ -L/usr/lib -L/usr/include/boost_1_40_0/stage/lib -o"HelloWorld" ./main.o -llibboost_system

/usr/bin/ld: cannot find -llibboost_system

collect2: ld returned 1 exit status

make: *** [HelloWorld] Error 1

make: Target `all' not remade because of errors.

我不确定为什么，但是似乎无法识别该库或我尝试的其他库。我可能做错了什么？提前致谢！