2.0 fails to build: no member named 'value' in 'std::__1::is_empty<asio::io_context>'

[yurivict]

/usr/include/c++/v1/memory:2132:30: error: no member named 'value' in 'std::__1::is_empty<asio::io_context>'
              is_empty<_Tp>::value && !__libcpp_is_final<_Tp>::value>
              ~~~~~~~~~~~~~~~^
/usr/include/c++/v1/memory:2213:32: note: in instantiation of default argument for '__compressed_pair_elem<asio::io_context, 1>' required here
  typedef _LIBCPP_NODEBUG_TYPE __compressed_pair_elem<_T2, 1> _Base2;
                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/v1/memory:3532:36: note: in instantiation of template class 'std::__1::__compressed_pair<std::__1::allocator<asio::io_context>, asio::io_context>' requested here
    __compressed_pair<_Alloc, _Tp> __data_;
                                   ^
/usr/include/c++/v1/memory:4202:26: note: in instantiation of template class 'std::__1::__shared_ptr_emplace<asio::io_context, std::__1::allocator<asio::io_context> >' requested here
    ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...);
                         ^
/usr/include/c++/v1/memory:4581:29: note: in instantiation of function template specialization 'std::__1::shared_ptr<asio::io_context>::make_shared<>' requested here
    return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...);
                            ^
/usr/ports/devel/opendht/work/opendht-2.0.0/src/peer_discovery.cpp:307:26: note: in instantiation of function template specialization 'std::__1::make_shared<asio::io_context>' requested here
        ioContext = std::make_shared<asio::io_context>();
                         ^

[aberaud]

What version of asio are you using ? It should work at least with asio 1.12

You can also build without the peer discovery module and http proxy support to avoid depending on asio (with cmake: -DOPENDHT_PEER_DISCOVERY=Off)

[yurivict]

asio-1.10.6

[yurivict]

clang-9
FreeBSD 12.1

[AmarOk1412]

asio-1.10.6

Update your version, you need asio 1.12 as adrien said.

[yurivict]

asio-1.16.0 works.

Thanks!