Linker Errors using Boost Sourcecode [closed] - c++

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I have a problem I can't get rid off.
I have a small private project where I want to use asio for network communication and boost threads. I don't wan`t install boost on my machine, so I integrated the sourcecode in my project. For that I created a global header including boost thread and asio, like this:
#include "boost/asio.hpp"
#include "boost/thread.hpp"
This way I can build static libs without problems, but shared libs or executables cause linker errors:
error LNK2019: unresolved external symbol "private: bool __cdecl boost::thread::join_noexcept(void)" (?join_noexcept#thread#boost##AEAA_NXZ) referenced in function "public: void __cdecl boost::thread::join(void)" (?join#thread#boost##QEAAXXZ)
error LNK2019: unresolved external symbol "class boost::thread::id __cdecl boost::this_thread::get_id(void)" (?get_id#this_thread#boost##YA?AVid#thread#2#XZ) referenced in function "public: void __cdecl boost::thread::join(void)" (?join#thread#boost##QEAAXXZ)
error LNK2019: unresolved external symbol "public: class boost::thread::id __cdecl boost::thread::get_id(void)const " (?get_id#thread#boost##QEBA?AVid#12#XZ) referenced in function "public: void __cdecl boost::thread::join(void)" (?join#thread#boost##QEAAXXZ)
error LNK2019: unresolved external symbol "private: bool __cdecl boost::thread::do_try_join_until_noexcept(unsigned __int64,bool &)" (?do_try_join_until_noexcept#thread#boost##AEAA_N_KAEA_N#Z) referenced in function "private: bool __cdecl boost::thread::do_try_join_until(unsigned __int64)" (?do_try_join_until#thread#boost##AEAA_N_K#Z)
error LNK2019: unresolved external symbol "public: void __cdecl boost::thread::interrupt(void)" (?interrupt#thread#boost##QEAAXXZ) referenced in function "public: __cdecl NetworkAdapter::~NetworkAdapter(void)" (??1NetworkAdapter##QEAA#XZ)
error LNK2019: unresolved external symbol "public: bool __cdecl boost::thread::joinable(void)const " (?joinable#thread#boost##QEBA_NXZ) referenced in function "public: __cdecl NetworkAdapter::~NetworkAdapter(void)" (??1NetworkAdapter##QEAA#XZ)
The current configuration for using boost as source within project so far is:
#define BOOST_SYSTEM_SOURCE
#define BOOST_DATE_TIME_NO_LIB
#define BOOST_REGEX_NO_LIB
#define BOOST_THREAD_DYN_LINK
#define BOOST_THREAD_DYN_DLL
#define BOOST_THREAD_BUILD_DLL
#define BOOST_CHRONO_HEADER_ONLY
#define BOOST_DATE_TIME_NO_LIB
Without this configuration linker asks for *.lib files for thread, chrono and so on.
According to boost homepage Thread and Asio are HeaderOnly, so why is the linker looking for lib, missing symbols - instead of using headers?
So what am I doing wrong?
Appreciating every hint :-)
Best regards,
Dan

Answer 1

From the boost threading website
Boost.Thread depends on some non header-only libraries.
Boost.System: This dependency is mandatory and you will need to link
with the library. Boost.Chrono: This dependency is optional (see below
how to configure) and you will need to link with the library if you
use some of the time related interfaces. Boost.DateTime: This
dependency is mandatory, but even if Boost.DateTime is a non
header-only library Boost.Thread uses only parts that are header-only,
so in principle you should not need to link with the library.
So you're mistaken - it's not header only.