Error building cpprestsdk on windows

[jwpwh]

I am trying to update to the latest packages and getting a build error in cpprestsdk.

• Cmake: 3.15
• VS 2019: 16.4.2
• Boost: 1_72
• OpenSSL: 1.1.1g - installed Win64OpenSSL-1_1_1g.exe
• cpprestsdk: 2.10.15

Cmake command:

cmake .. ^
  -G "Visual Studio 16 2019" -A x64^
  -DCMAKE_INSTALL_PREFIX=%NMOS_LIBS% ^
  -DCPPREST_PPLX_IMPL:STRING="winpplx" ^
  -DCPPREST_EXCLUDE_COMPRESSION=1 ^
  -DCMAKE_CONFIGURATION_TYPES:STRING="Debug;Release" ^
  -DCPPREST_HTTP_LISTENER_IMPL:STRING="asio" ^
  -DCPPREST_HTTP_CLIENT_IMPL:STRING="asio" ^
  -DBoost_USE_STATIC_LIBS:BOOL="1" ^
  -DBOOST_INCLUDEDIR:PATH="%BOOST_INC%" ^
  -DBOOST_LIBRARYDIR:PATH="%BOOST_LIB%" ^
  -DOPENSSL_ROOT_DIR:PATH="%OPENSSL_INSTALL%" ^
  -DWERROR=0 ^
  -DBUILD_SAMPLES:BOOL="0" ^
  -DBUILD_TESTS:BOOL="0"

Running VS 2019 (in admin mode) and building cpprest. Gets the following error messages when compiling ws_client_wspp.cpp

1>ws_client_wspp.cpp
1>E:\projects\wheat_eth_blade4_prototype_nmos\sw\3rdparty\install-nmos\win64\include\boost-1_72\boost/asio/impl/executor.hpp(218,1): error C2678: binary '==': no operator found which takes a left-hand operand of type 'const Executor' (or there is no acceptable conversion)
1>        with
1>        [
1>            Executor=std::reference_wrapper<boost::asio::io_service>
1>        ]
1>E:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.24.28314\include\thread(205,24): message : could be 'bool std::operator ==(std::thread::id,std::thread::id) noexcept' [found using argument-dependent lookup]
1>E:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.24.28314\include\random(2031,24): message : or       'bool std::operator ==(const std::bernoulli_distribution &,const std::bernoulli_distribution &)' [found using argument-dependent lookup]
1>E:\projects\wheat_eth_blade4_prototype_nmos\sw\3rdparty\install-nmos\win64\include\boost-1_72\boost/asio/impl/executor.hpp(218,1): message : while trying to match the argument list '(const Executor, const Executor)'
1>        with
1>        [
1>            Executor=std::reference_wrapper<boost::asio::io_service>
1>        ]
1>E:\projects\wheat_eth_blade4_prototype_nmos\sw\3rdparty\install-nmos\win64\include\boost-1_72\boost/asio/impl/executor.hpp(213): message : while compiling class template member function 'bool boost::asio::executor::impl<Executor,std::allocator<void>>::equals(const boost::asio::executor::impl_base *) noexcept const'
1>        with
1>        [
1>            Executor=std::reference_wrapper<boost::asio::io_service>
1>        ]
1>E:\projects\wheat_eth_blade4_prototype_nmos\sw\3rdparty\install-nmos\win64\include\boost-1_72\boost/asio/impl/executor.hpp(333): message : see reference to class template instantiation 'boost::asio::executor::impl<Executor,std::allocator<void>>' being compiled
1>        with
1>        [
1>            Executor=std::reference_wrapper<boost::asio::io_service>
1>        ]
1>E:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.24.28314\include\xmemory(202): message : see reference to function template instantiation 'boost::asio::executor::executor<_Ty>(Executor)' being compiled
1>        with
1>        [
1>            _Ty=std::reference_wrapper<boost::asio::io_service>,
1>            Executor=std::reference_wrapper<boost::asio::io_service>
1>        ]
1>E:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.24.28314\include\memory(1490): message : see reference to function template instantiation 'void std::_Construct_in_place<_Ty,std::reference_wrapper<boost::asio::io_service>>(_Ty &,std::reference_wrapper<boost::asio::io_service> &&) noexcept(false)' being compiled
1>        with
1>        [
1>            _Ty=boost::asio::ip::tcp::socket
1>        ]
1>E:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.24.28314\include\memory(1590): message : see reference to function template instantiation 'std::_Ref_count_obj2<_Ty>::_Ref_count_obj2<std::reference_wrapper<boost::asio::io_service>>(std::reference_wrapper<boost::asio::io_service> &&)' being compiled
1>        with
1>        [
1>            _Ty=boost::asio::ip::tcp::socket
1>        ]
1>E:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.24.28314\include\memory(1591): message : see reference to function template instantiation 'std::_Ref_count_obj2<_Ty>::_Ref_count_obj2<std::reference_wrapper<boost::asio::io_service>>(std::reference_wrapper<boost::asio::io_service> &&)' being compiled
1>        with
1>        [
1>            _Ty=boost::asio::ip::tcp::socket
1>        ]
1>E:\projects\wheat_eth_blade4_prototype_nmos\sw\3rdparty\cpprestsdk\cpprestsdk-2.10.15\cpprestsdk\Release\libs\websocketpp\websocketpp/transport/asio/security/none.hpp(172): message : see reference to function template instantiation 'std::shared_ptr<websocketpp::transport::asio::basic_socket::connection::socket_type> std::make_shared<boost::asio::ip::tcp::socket,std::reference_wrapper<boost::asio::io_service>>(std::reference_wrapper<boost::asio::io_service> &&)' being compiled
1>E:\projects\wheat_eth_blade4_prototype_nmos\sw\3rdparty\install-nmos\win64\include\boost-1_72\boost/asio/use_future.hpp(139): message : see reference to class template instantiation 'boost::asio::use_future_t<std::allocator<void>>::std_allocator_void' being compiled
1>E:\projects\wheat_eth_blade4_prototype_nmos\sw\3rdparty\install-nmos\win64\include\boost-1_72\boost/asio/use_future.hpp(147): message : see reference to class template instantiation 'boost::asio::use_future_t<std::allocator<void>>' being compiled
1>Done building project "cpprest.vcxproj" -- FAILED.

I have tried this without the asio settings also and the same (or least very similar) error is received.

Any suggestions?

Thanks.

[garethsb]

WebSocket++ 0.8.1 isn't compatible with Boost 1.70+. See #102 for further explanation.

Good news is that the patch has been known for a long time but has been finally merged to master and released as WebSocket++ 0.8.2. Now waiting for cpprestsdk to bump its git submodule commit (there's a PR for that too).

Update the submodule or install WebSocket++ 0.8.2 manually, and all is good.

[jwpwh]

Thanks. You are the best!

These are the git commands I used in order to get the patch which compiles without errors with Bosst 1.72.

git clone --recurse-submodules --branch v2.10.15 https://github.com/Microsoft/cpprestsdk
git submodule update --init --recursive --remote

Does the dependency information mention that this extra step is needed? It mentions 1.72 but I did not see a mention of the possible negative effects.

Thanks again for the quick response.