/tmp/ccMZH6MZ.o: In function `boost::coroutines::detail::push_coroutine_context_void::push_coroutine_context_void<boost::coroutines::detail::push_coroutine_object<boost::coroutines::pull_coroutine<void>, void, boost::asio::detail::coro_entry_point<boost::asio::detail::wrapped_handler<boost::asio::io_service::strand, void (*)(), boost::asio::detail::is_continuation_if_running>, main::{lambda(boost::asio::basic_yield_context<boost::asio::detail::wrapped_handler<boost::asio::io_service::strand, void (*)(), boost::asio::detail::is_continuation_if_running> >)#1}>&, boost::coroutines::basic_standard_stack_allocator<boost::coroutines::stack_traits> > >(boost::coroutines::stack_context const&, boost::coroutines::detail::push_coroutine_object<boost::coroutines::pull_coroutine<void>, void, boost::asio::detail::coro_entry_point<boost::asio::detail::wrapped_handler<boost::asio::io_service::strand, void (*)(), boost::asio::detail::is_continuation_if_running>, main::{lambda(boost::asio::basic_yield_context<boost::asio::detail::wrapped_handler<boost::asio::io_service::strand, void (*)(), boost::asio::detail::is_continuation_if_running> >)#1}>&, boost::coroutines::basic_standard_stack_allocator<boost::coroutines::stack_traits> >*)':
asio-server.cpp:(.text+0x15b2): undefined reference to `boost::coroutines::detail::coroutine_context::coroutine_context(void (*)(long), boost::coroutines::stack_context const&)'
/tmp/ccMZH6MZ.o: In function `boost::coroutines::attributes::attributes()':
asio-server.cpp:(.text._ZN5boost10coroutines10attributesC2Ev[_ZN5boost10coroutines10attributesC5Ev]+0xd): undefined reference to `boost::coroutines::stack_traits::default_size()'
/tmp/ccMZH6MZ.o: In function `boost::coroutines::basic_standard_stack_allocator<boost::coroutines::stack_traits>::allocate(boost::coroutines::stack_context&, unsigned long)':
asio-server.cpp:(.text._ZN5boost10coroutines30basic_standard_stack_allocatorINS0_12stack_traitsEE8allocateERNS0_13stack_contextEm[_ZN5boost10coroutines30basic_standard_stack_allocatorINS0_12stack_traitsEE8allocateERNS0_13stack_contextEm]+0x16): undefined reference to `boost::coroutines::stack_traits::minimum_size()'
asio-server.cpp:(.text._ZN5boost10coroutines30basic_standard_stack_allocatorINS0_12stack_traitsEE8allocateERNS0_13stack_contextEm[_ZN5boost10coroutines30basic_standard_stack_allocatorINS0_12stack_traitsEE8allocateERNS0_13stack_contextEm]+0x3a): undefined reference to `boost::coroutines::stack_traits::is_unbounded()'
asio-server.cpp:(.text._ZN5boost10coroutines30basic_standard_stack_allocatorINS0_12stack_traitsEE8allocateERNS0_13stack_contextEm[_ZN5boost10coroutines30basic_standard_stack_allocatorINS0_12stack_traitsEE8allocateERNS0_13stack_contextEm]+0x46): undefined reference to `boost::coroutines::stack_traits::maximum_size()'
/tmp/ccMZH6MZ.o: In function `boost::coroutines::detail::push_coroutine_context_void::push_coroutine_context_void<boost::coroutines::detail::push_coroutine_object<boost::coroutines::pull_coroutine<void>, void, boost::asio::detail::coro_entry_point<boost::asio::detail::wrapped_handler<boost::asio::io_service::strand, void (*)(), boost::asio::detail::is_continuation_if_running>, session::go()::{lambda(boost::asio::basic_yield_context<boost::asio::detail::wrapped_handler<boost::asio::io_service::strand, void (*)(), boost::asio::detail::is_continuation_if_running> >)#1}>&, boost::coroutines::basic_standard_stack_allocator<boost::coroutines::stack_traits> > >(boost::coroutines::stack_context const&, boost::coroutines::detail::push_coroutine_object<boost::coroutines::pull_coroutine<void>, void, boost::asio::detail::coro_entry_point<boost::asio::detail::wrapped_handler<boost::asio::io_service::strand, void (*)(), boost::asio::detail::is_continuation_if_running>, session::go()::{lambda(boost::asio::basic_yield_context<boost::asio::detail::wrapped_handler<boost::asio::io_service::strand, void (*)(), boost::asio::detail::is_continuation_if_running> >)#1}>&, boost::coroutines::basic_standard_stack_allocator<boost::coroutines::stack_traits> >*)':
asio-server.cpp:(.text._ZN5boost10coroutines6detail27push_coroutine_context_voidC2INS1_21push_coroutine_objectINS0_14pull_coroutineIvEEvRNS_4asio6detail16coro_entry_pointINS8_15wrapped_handlerINS7_10io_service6strandEPFvvENS8_26is_continuation_if_runningEEEZN7session2goEvEUlNS7_19basic_yield_contextISG_EEE_EENS0_30basic_standard_stack_allocatorINS0_12stack_traitsEEEEEEERKNS0_13stack_contextEPT_[_ZN5boost10coroutines6detail27push_coroutine_context_voidC5INS1_21push_coroutine_objectINS0_14pull_coroutineIvEEvRNS_4asio6detail16coro_entry_pointINS8_15wrapped_handlerINS7_10io_service6strandEPFvvENS8_26is_continuation_if_runningEEEZN7session2goEvEUlNS7_19basic_yield_contextISG_EEE_EENS0_30basic_standard_stack_allocatorINS0_12stack_traitsEEEEEEERKNS0_13stack_contextEPT_]+0x38): undefined reference to `boost::coroutines::detail::coroutine_context::coroutine_context(void (*)(long), boost::coroutines::stack_context const&)'
/tmp/ccMZH6MZ.o: In function `boost::coroutines::detail::push_coroutine_context_void::push_coroutine_context_void<boost::coroutines::detail::push_coroutine_object<boost::coroutines::pull_coroutine<void>, void, boost::asio::detail::coro_entry_point<boost::asio::detail::wrapped_handler<boost::asio::io_service::strand, void (*)(), boost::asio::detail::is_continuation_if_running>, session::go()::{lambda(boost::asio::basic_yield_context<boost::asio::detail::wrapped_handler<boost::asio::io_service::strand, void (*)(), boost::asio::detail::is_continuation_if_running> >)#2}>&, boost::coroutines::basic_standard_stack_allocator<boost::coroutines::stack_traits> > >(boost::coroutines::stack_context const&, boost::coroutines::detail::push_coroutine_object<boost::coroutines::pull_coroutine<void>, void, boost::asio::detail::coro_entry_point<boost::asio::detail::wrapped_handler<boost::asio::io_service::strand, void (*)(), boost::asio::detail::is_continuation_if_running>, session::go()::{lambda(boost::asio::basic_yield_context<boost::asio::detail::wrapped_handler<boost::asio::io_service::strand, void (*)(), boost::asio::detail::is_continuation_if_running> >)#2}>&, boost::coroutines::basic_standard_stack_allocator<boost::coroutines::stack_traits> >*)':
asio-server.cpp:(.text._ZN5boost10coroutines6detail27push_coroutine_context_voidC2INS1_21push_coroutine_objectINS0_14pull_coroutineIvEEvRNS_4asio6detail16coro_entry_pointINS8_15wrapped_handlerINS7_10io_service6strandEPFvvENS8_26is_continuation_if_runningEEEZN7session2goEvEUlNS7_19basic_yield_contextISG_EEE0_EENS0_30basic_standard_stack_allocatorINS0_12stack_traitsEEEEEEERKNS0_13stack_contextEPT_[_ZN5boost10coroutines6detail27push_coroutine_context_voidC5INS1_21push_coroutine_objectINS0_14pull_coroutineIvEEvRNS_4asio6detail16coro_entry_pointINS8_15wrapped_handlerINS7_10io_service6strandEPFvvENS8_26is_continuation_if_runningEEEZN7session2goEvEUlNS7_19basic_yield_contextISG_EEE0_EENS0_30basic_standard_stack_allocatorINS0_12stack_traitsEEEEEEERKNS0_13stack_contextEPT_]+0x38): undefined reference to `boost::coroutines::detail::coroutine_context::coroutine_context(void (*)(long), boost::coroutines::stack_context const&)'
/tmp/ccMZH6MZ.o: In function `boost::coroutines::basic_standard_stack_allocator<boost::coroutines::stack_traits>::deallocate(boost::coroutines::stack_context&)':
asio-server.cpp:(.text._ZN5boost10coroutines30basic_standard_stack_allocatorINS0_12stack_traitsEE10deallocateERNS0_13stack_contextE[_ZN5boost10coroutines30basic_standard_stack_allocatorINS0_12stack_traitsEE10deallocateERNS0_13stack_contextE]+0x37): undefined reference to `boost::coroutines::stack_traits::minimum_size()'
asio-server.cpp:(.text._ZN5boost10coroutines30basic_standard_stack_allocatorINS0_12stack_traitsEE10deallocateERNS0_13stack_contextE[_ZN5boost10coroutines30basic_standard_stack_allocatorINS0_12stack_traitsEE10deallocateERNS0_13stack_contextE]+0x64): undefined reference to `boost::coroutines::stack_traits::is_unbounded()'
asio-server.cpp:(.text._ZN5boost10coroutines30basic_standard_stack_allocatorINS0_12stack_traitsEE10deallocateERNS0_13stack_contextE[_ZN5boost10coroutines30basic_standard_stack_allocatorINS0_12stack_traitsEE10deallocateERNS0_13stack_contextE]+0x70): undefined reference to `boost::coroutines::stack_traits::maximum_size()'
collect2: error: ld returned 1 exit status