make PythonAPI fails for Windows 10,

[frodozet]

linker fails building libcarla.obj in make PythonAPI
what could be the reason?

where to show for those unresolved external symbols???

Platform: Windows 10
VS 2017
python 3.7.9 64bit
carla: 0.9.10.1-122-g064760da

make launch OK!
make PythonAPI ERROR!
unresolved LNK2001

TrafficManager.cpp
dependencies/include\carla/trafficmanager/RandomGenerator.h(14): warning C4244: 'argument': conversion from 'const uint64_t' to 'unsigned int', possible loss of data
dependencies/include/carla\trafficmanager\TrafficManager.cpp(72): warning C4244: 'initializing': conversion from 'SOCKET' to 'int', possible loss of data
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\HostX86\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -Idependencies/include "-IC:\Program Files\Python37\include" "-IC:\Program Files\Python37\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\cppwinrt" "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\cppwinrt" /EHsc /Tpdependencies/include/carla\trafficmanager\TrafficManagerLocal.cpp /Fobuild\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\TrafficManagerLocal.obj /experimental:external /external:I dependencies/include/system /DBOOST_ALL_NO_LIB /DBOOST_PYTHON_STATIC_LIB /DBOOST_ERROR_CODE_HEADER_ONLY /D_WIN32_WINNT=0x0600 /DHAVE_SNPRINTF /DLIBCARLA_WITH_PYTHON_SUPPORT -DLIBCARLA_IMAGE_WITH_PNG_SUPPORT=true
TrafficManagerLocal.cpp
dependencies/include\carla/trafficmanager/RandomGenerator.h(14): warning C4244: 'argument': conversion from 'const uint64_t' to 'unsigned int', possible loss of data
dependencies/include/carla\trafficmanager\TrafficManagerLocal.cpp(157): warning C4267: 'initializing': conversion from 'size_t' to 'unsigned long', possible loss of data
dependencies/include/carla\trafficmanager\TrafficManagerLocal.cpp(164): warning C4267: '=': conversion from 'size_t' to 'unsigned long', possible loss of data
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\HostX86\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -Idependencies/include "-IC:\Program Files\Python37\include" "-IC:\Program Files\Python37\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\cppwinrt" "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\cppwinrt" /EHsc /Tpdependencies/include/carla\trafficmanager\TrafficManagerRemote.cpp /Fobuild\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\TrafficManagerRemote.obj /experimental:external /external:I dependencies/include/system /DBOOST_ALL_NO_LIB /DBOOST_PYTHON_STATIC_LIB /DBOOST_ERROR_CODE_HEADER_ONLY /D_WIN32_WINNT=0x0600 /DHAVE_SNPRINTF /DLIBCARLA_WITH_PYTHON_SUPPORT -DLIBCARLA_IMAGE_WITH_PNG_SUPPORT=true
TrafficManagerRemote.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\HostX86\x64\link.exe /nologo /INCREMENTAL:NO /LTCG /DLL /MANIFEST:EMBED,ID=2 /MANIFESTUAC:NO /LIBPATH:dependencies/lib "/LIBPATH:C:\Program Files\Python37\libs" "/LIBPATH:C:\Program Files\Python37\PCbuild\amd64" "/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\ATLMFC\lib\x64" "/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\lib\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\ucrt\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\um\x64" "/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\ATLMFC\lib\x64" "/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\lib\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\lib\um\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\ucrt\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\um\x64" /EXPORT:PyInit_libcarla build\temp.win-amd64-3.7\Release\source/libcarla/libcarla.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\Buffer.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\Exception.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\FileSystem.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\StringUtil.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\Actor.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\ActorAttribute.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\ActorBlueprint.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\ActorList.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\BlueprintLibrary.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\DebugHelper.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\Junction.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\LaneInvasionSensor.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\Light.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\LightManager.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\Map.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\ServerSideSensor.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\TimeoutException.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\TrafficLight.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\TrafficSign.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\Vehicle.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\Walker.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\WalkerAIController.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\Waypoint.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\World.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\detail\ActorFactory.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\detail\ActorState.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\detail\ActorVariant.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\detail\Client.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\detail\Episode.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\detail\EpisodeProxy.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\detail\EpisodeState.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\detail\Simulator.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\client\detail\WalkerNavigation.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\geom\GeoLocation.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\geom\Math.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\geom\Mesh.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\nav\Navigation.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\nav\WalkerEvent.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\nav\WalkerManager.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\opendrive\OpenDriveParser.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\opendrive\parser\ControllerParser.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\opendrive\parser\GeometryParser.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\opendrive\parser\GeoReferenceParser.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\opendrive\parser\JunctionParser.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\opendrive\parser\LaneParser.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\opendrive\parser\ObjectParser.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\opendrive\parser\ProfilesParser.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\opendrive\parser\RoadParser.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\opendrive\parser\SignalParser.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\opendrive\parser\TrafficGroupParser.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\road\Lane.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\road\LaneSection.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\road\Map.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\road\MapBuilder.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\road\MapData.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\road\MeshFactory.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\road\Road.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\road\SignalType.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\road\element\Geometry.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\road\element\LaneCrossingCalculator.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\road\element\LaneMarking.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\road\element\Waypoint.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\rpc\MapLayer.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\rpc\WeatherParameters.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\sensor\Deserializer.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\sensor\data\LaneInvasionEvent.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\sensor\s11n\CollisionEventSerializer.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\sensor\s11n\DVSEventArraySerializer.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\sensor\s11n\EpisodeStateSerializer.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\sensor\s11n\GnssSerializer.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\sensor\s11n\ImageSerializer.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\sensor\s11n\IMUSerializer.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\sensor\s11n\LidarSerializer.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\sensor\s11n\NoopSerializer.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\sensor\s11n\ObstacleDetectionEventSerializer.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\sensor\s11n\RadarSerializer.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\sensor\s11n\SemanticLidarSerializer.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\sensor\s11n\SensorHeaderSerializer.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\streaming\detail\Dispatcher.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\streaming\detail\StreamStateBase.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\streaming\detail\Token.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\streaming\detail\tcp\Client.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\streaming\detail\tcp\Server.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\streaming\detail\tcp\ServerSession.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\ALSM.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\CollisionStage.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\InMemoryMap.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\LocalizationStage.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\LocalizationUtils.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\MotionPlanStage.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\Parameters.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\SimpleWaypoint.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\SimulationState.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\TrackTraffic.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\TrafficLightStage.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\TrafficManager.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\TrafficManagerLocal.obj build\temp.win-amd64-3.7\Release\dependencies/include/carla\trafficmanager\TrafficManagerRemote.obj /OUT:build\lib.win-amd64-3.7\carla\libcarla.cp37-win_amd64.pyd /IMPLIB:build\temp.win-amd64-3.7\Release\source/libcarla\libcarla.cp37-win_amd64.lib shlwapi.lib Advapi32.lib C:\Users\frodozet\dev\carla\carla-0.9.10.1\PythonAPI\carla\dependencies/lib\carla_client.lib C:\Users\frodozet\dev\carla\carla-0.9.10.1\PythonAPI\carla\dependencies/lib\Detour.lib C:\Users\frodozet\dev\carla\carla-0.9.10.1\PythonAPI\carla\dependencies/lib\DetourCrowd.lib C:\Users\frodozet\dev\carla\carla-0.9.10.1\PythonAPI\carla\dependencies/lib\libboost_filesystem-vc141-mt-x64-1_72.lib C:\Users\frodozet\dev\carla\carla-0.9.10.1\PythonAPI\carla\dependencies/lib\libpng.lib C:\Users\frodozet\dev\carla\carla-0.9.10.1\PythonAPI\carla\dependencies/lib\osm2odr.lib C:\Users\frodozet\dev\carla\carla-0.9.10.1\PythonAPI\carla\dependencies/lib\Recast.lib C:\Users\frodozet\dev\carla\carla-0.9.10.1\PythonAPI\carla\dependencies/lib\rpc.lib C:\Users\frodozet\dev\carla\carla-0.9.10.1\PythonAPI\carla\dependencies/lib\xerces-c_3.lib C:\Users\frodozet\dev\carla\carla-0.9.10.1\PythonAPI\carla\dependencies/lib\zlib.lib
   Creating library build\temp.win-amd64-3.7\Release\source/libcarla\libcarla.cp37-win_amd64.lib and object build\temp.win-amd64-3.7\Release\source/libcarla\libcarla.cp37-win_amd64.exp
libcarla.obj : error LNK2001: unresolved external symbol "void __cdecl boost::python::throw_error_already_set(void)" (?throw_error_already_set@python@boost@@YAXXZ)
libcarla.obj : error LNK2001: unresolved external symbol "struct boost::python::self_ns::self_t boost::python::self_ns::self" (?self@self_ns@python@boost@@3Uself_t@123@A)
libcarla.obj : error LNK2001: unresolved external symbol "void * __cdecl boost::python::converter::get_lvalue_from_python(struct _object *,struct boost::python::converter::registration const &)" (?get_lvalue_from_python@converter@python@boost@@YAPEAXPEAU_object@@AEBUregistration@123@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "struct boost::python::converter::registration const & __cdecl boost::python::converter::registry::lookup_shared_ptr(struct boost::python::type_info)" (?lookup_shared_ptr@registry@converter@python@boost@@YAAEBUregistration@234@Utype_info@34@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "struct boost::python::converter::registration const * __cdecl boost::python::converter::registry::query(struct boost::python::type_info)" (?query@registry@converter@python@boost@@YAPEBUregistration@234@Utype_info@34@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "void __cdecl boost::python::converter::registry::push_back(void * (__cdecl*)(struct _object *),void (__cdecl*)(struct _object *,struct boost::python::converter::rvalue_from_python_stage1_data *),struct boost::python::type_info,struct _typeobject const * (__cdecl*)(void))" (?push_back@registry@converter@python@boost@@YAXP6APEAXPEAU_object@@@ZP6AX0PEAUrvalue_from_python_stage1_data@234@@ZUtype_info@34@P6APEBU_typeobject@@XZ@Z)
libcarla.obj : error LNK2001: unresolved external symbol "void __cdecl boost::python::converter::registry::insert(struct _object * (__cdecl*)(void const *),struct boost::python::type_info,struct _typeobject const * (__cdecl*)(void))" (?insert@registry@converter@python@boost@@YAXP6APEAU_object@@PEBX@ZUtype_info@34@P6APEBU_typeobject@@XZ@Z)
libcarla.obj : error LNK2001: unresolved external symbol "void __cdecl boost::python::converter::registry::insert(void * (__cdecl*)(struct _object *),void (__cdecl*)(struct _object *,struct boost::python::converter::rvalue_from_python_stage1_data *),struct boost::python::type_info,struct _typeobject const * (__cdecl*)(void))" (?insert@registry@converter@python@boost@@YAXP6APEAXPEAU_object@@@ZP6AX0PEAUrvalue_from_python_stage1_data@234@@ZUtype_info@34@P6APEBU_typeobject@@XZ@Z)
libcarla.obj : error LNK2001: unresolved external symbol "struct boost::python::converter::registration const & __cdecl boost::python::converter::registry::lookup(struct boost::python::type_info)" (?lookup@registry@converter@python@boost@@YAAEBUregistration@234@Utype_info@34@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "public: void __cdecl boost::python::converter::shared_ptr_deleter::operator()(void const *)" (??Rshared_ptr_deleter@converter@python@boost@@QEAAXPEBX@Z)
libcarla.obj : error LNK2001: unresolved external symbol "public: __cdecl boost::python::converter::shared_ptr_deleter::~shared_ptr_deleter(void)" (??1shared_ptr_deleter@converter@python@boost@@QEAA@XZ)
libcarla.obj : error LNK2001: unresolved external symbol "public: __cdecl boost::python::converter::shared_ptr_deleter::shared_ptr_deleter(class boost::python::handle<struct _object>)" (??0shared_ptr_deleter@converter@python@boost@@QEAA@V?$handle@U_object@@@23@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "void __cdecl boost::python::converter::void_result_from_python(struct _object *)" (?void_result_from_python@converter@python@boost@@YAXPEAU_object@@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "void * __cdecl boost::python::converter::rvalue_from_python_stage2(struct _object *,struct boost::python::converter::rvalue_from_python_stage1_data &,struct boost::python::converter::registration const &)" (?rvalue_from_python_stage2@converter@python@boost@@YAPEAXPEAU_object@@AEAUrvalue_from_python_stage1_data@123@AEBUregistration@123@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "struct boost::python::converter::rvalue_from_python_stage1_data __cdecl boost::python::converter::rvalue_from_python_stage1(struct _object *,struct boost::python::converter::registration const &)" (?rvalue_from_python_stage1@converter@python@boost@@YA?AUrvalue_from_python_stage1_data@123@PEAU_object@@AEBUregistration@123@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "public: __cdecl boost::python::converter::detail::arg_to_python_base::arg_to_python_base(void const volatile *,struct boost::python::converter::registration const &)" (??0arg_to_python_base@detail@converter@python@boost@@QEAA@PEDXAEBUregistration@234@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "struct _object * __cdecl boost::python::converter::do_return_to_python(char const *)" (?do_return_to_python@converter@python@boost@@YAPEAU_object@@PEBD@Z)
libcarla.obj : error LNK2001: unresolved external symbol "struct _object * __cdecl boost::python::converter::do_return_to_python(struct _object *)" (?do_return_to_python@converter@python@boost@@YAPEAU_object@@PEAU4@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "bool __cdecl boost::python::converter::implicit_rvalue_convertible_from_python(struct _object *,struct boost::python::converter::registration const &)" (?implicit_rvalue_convertible_from_python@converter@python@boost@@YA_NPEAU_object@@AEBUregistration@123@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "public: struct _typeobject const * __cdecl boost::python::converter::registration::to_python_target_type(void)const " (?to_python_target_type@registration@converter@python@boost@@QEBAPEBU_typeobject@@XZ)
libcarla.obj : error LNK2001: unresolved external symbol "public: struct _typeobject const * __cdecl boost::python::converter::registration::expected_from_python_type(void)const " (?expected_from_python_type@registration@converter@python@boost@@QEBAPEBU_typeobject@@XZ)
libcarla.obj : error LNK2001: unresolved external symbol "public: struct _typeobject * __cdecl boost::python::converter::registration::get_class_object(void)const " (?get_class_object@registration@converter@python@boost@@QEBAPEAU_typeobject@@XZ)
libcarla.obj : error LNK2001: unresolved external symbol "public: struct _object * __cdecl boost::python::converter::registration::to_python(void const volatile *)const " (?to_python@registration@converter@python@boost@@QEBAPEAU_object@@PEDX@Z)
libcarla.obj : error LNK2001: unresolved external symbol "void __cdecl boost::python::converter::throw_no_reference_from_python(struct _object *,struct boost::python::converter::registration const &)" (?throw_no_reference_from_python@converter@python@boost@@YAXPEAU_object@@AEBUregistration@123@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "protected: __cdecl boost::python::detail::list_base::list_base(void)" (??0list_base@detail@python@boost@@IEAA@XZ)
libcarla.obj : error LNK2001: unresolved external symbol "protected: __cdecl boost::python::detail::list_base::list_base(class boost::python::api::object const &)" (??0list_base@detail@python@boost@@IEAA@AEBVobject@api@23@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "public: void __cdecl boost::python::detail::list_base::append(class boost::python::api::object const &)" (?append@list_base@detail@python@boost@@QEAAXAEBVobject@api@34@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "protected: __cdecl boost::python::detail::tuple_base::tuple_base(class boost::python::api::object const &)" (??0tuple_base@detail@python@boost@@IEAA@AEBVobject@api@23@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "void __cdecl boost::python::detail::register_exception_handler(class boost::function2<bool,struct boost::python::detail::exception_handler const &,class boost::function0<void> const &> const &)" (?register_exception_handler@detail@python@boost@@YAXAEBV?$function2@_NAEBUexception_handler@detail@python@boost@@AEBV?$function0@X@4@@3@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "public: bool __cdecl boost::python::detail::exception_handler::operator()(class boost::function0<void> const &)const " (??Rexception_handler@detail@python@boost@@QEBA_NAEBV?$function0@X@3@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "struct _object * boost::python::detail::current_scope" (?current_scope@detail@python@boost@@3PEAU_object@@EA)
libcarla.obj : error LNK2001: unresolved external symbol "protected: __cdecl boost::python::detail::dict_base::dict_base(void)" (??0dict_base@detail@python@boost@@IEAA@XZ)
libcarla.obj : error LNK2001: unresolved external symbol "class boost::python::api::object __cdecl boost::python::detail::make_raw_function(struct boost::python::objects::py_function)" (?make_raw_function@detail@python@boost@@YA?AVobject@api@23@Upy_function@objects@23@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "struct _object * __cdecl boost::python::detail::init_module(struct PyModuleDef &,void (__cdecl*)(void))" (?init_module@detail@python@boost@@YAPEAU_object@@AEAUPyModuleDef@@P6AXXZ@Z)
libcarla.obj : error LNK2001: unresolved external symbol "public: static void __cdecl boost::python::instance_holder::deallocate(struct _object *,void *)" (?deallocate@instance_holder@python@boost@@SAXPEAU_object@@PEAX@Z)
libcarla.obj : error LNK2001: unresolved external symbol "public: static void * __cdecl boost::python::instance_holder::allocate(struct _object *,unsigned __int64,unsigned __int64)" (?allocate@instance_holder@python@boost@@SAPEAXPEAU_object@@_K1@Z)
libcarla.obj : error LNK2001: unresolved external symbol "public: void __cdecl boost::python::instance_holder::install(struct _object *)" (?install@instance_holder@python@boost@@QEAAXPEAU_object@@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "public: virtual __cdecl boost::python::instance_holder::~instance_holder(void)" (??1instance_holder@python@boost@@UEAA@XZ)
libcarla.obj : error LNK2001: unresolved external symbol "public: __cdecl boost::python::instance_holder::instance_holder(void)" (??0instance_holder@python@boost@@QEAA@XZ)
libcarla.obj : error LNK2001: unresolved external symbol "public: class boost::python::handle<struct _object> const & __cdecl boost::python::objects::stl_input_iterator_impl::current(void)const " (?current@stl_input_iterator_impl@objects@python@boost@@QEBAAEBV?$handle@U_object@@@34@XZ)
libcarla.obj : error LNK2001: unresolved external symbol "public: bool __cdecl boost::python::objects::stl_input_iterator_impl::equal(struct boost::python::objects::stl_input_iterator_impl const &)const " (?equal@stl_input_iterator_impl@objects@python@boost@@QEBA_NAEBU1234@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "public: void __cdecl boost::python::objects::stl_input_iterator_impl::increment(void)" (?increment@stl_input_iterator_impl@objects@python@boost@@QEAAXXZ)
libcarla.obj : error LNK2001: unresolved external symbol "public: __cdecl boost::python::objects::stl_input_iterator_impl::stl_input_iterator_impl(void)" (??0stl_input_iterator_impl@objects@python@boost@@QEAA@XZ)
libcarla.obj : error LNK2001: unresolved external symbol "public: __cdecl boost::python::objects::stl_input_iterator_impl::stl_input_iterator_impl(class boost::python::api::object const &)" (??0stl_input_iterator_impl@objects@python@boost@@QEAA@AEBVobject@api@23@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "class boost::python::handle<struct _typeobject> __cdecl boost::python::objects::registered_class_object(struct boost::python::type_info)" (?registered_class_object@objects@python@boost@@YA?AV?$handle@U_typeobject@@@23@Utype_info@23@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "class boost::python::api::object const & __cdecl boost::python::objects::identity_function(void)" (?identity_function@objects@python@boost@@YAAEBVobject@api@23@XZ)
libcarla.obj : error LNK2001: unresolved external symbol "struct _object * __cdecl boost::python::objects::make_nurse_and_patient(struct _object *,struct _object *)" (?make_nurse_and_patient@objects@python@boost@@YAPEAU_object@@PEAU4@0@Z)
libcarla.obj : error LNK2001: unresolved external symbol "void __cdecl boost::python::objects::add_cast(struct boost::python::type_info,struct boost::python::type_info,void * (__cdecl*)(void *),bool)" (?add_cast@objects@python@boost@@YAXUtype_info@23@0P6APEAXPEAX@Z_N@Z)
libcarla.obj : error LNK2001: unresolved external symbol "protected: void __cdecl boost::python::objects::class_base::make_method_static(char const *)" (?make_method_static@class_base@objects@python@boost@@IEAAXPEBD@Z)
libcarla.obj : error LNK2001: unresolved external symbol "protected: void __cdecl boost::python::objects::class_base::def_no_init(void)" (?def_no_init@class_base@objects@python@boost@@IEAAXXZ)
libcarla.obj : error LNK2001: unresolved external symbol "protected: void __cdecl boost::python::objects::class_base::set_instance_size(unsigned __int64)" (?set_instance_size@class_base@objects@python@boost@@IEAAX_K@Z)
libcarla.obj : error LNK2001: unresolved external symbol "protected: void __cdecl boost::python::objects::class_base::add_static_property(char const *,class boost::python::api::object const &)" (?add_static_property@class_base@objects@python@boost@@IEAAXPEBDAEBVobject@api@34@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "protected: void __cdecl boost::python::objects::class_base::add_property(char const *,class boost::python::api::object const &,char const *)" (?add_property@class_base@objects@python@boost@@IEAAXPEBDAEBVobject@api@34@0@Z)
libcarla.obj : error LNK2001: unresolved external symbol "protected: void __cdecl boost::python::objects::class_base::add_property(char const *,class boost::python::api::object const &,class boost::python::api::object const &,char const *)" (?add_property@class_base@objects@python@boost@@IEAAXPEBDAEBVobject@api@34@10@Z)
libcarla.obj : error LNK2001: unresolved external symbol "public: __cdecl boost::python::objects::class_base::class_base(char const *,unsigned __int64,struct boost::python::type_info const * const,char const *)" (??0class_base@objects@python@boost@@QEAA@PEBD_KQEBUtype_info@23@0@Z)
libcarla.obj : error LNK2001: unresolved external symbol "void __cdecl boost::python::objects::register_dynamic_id_aux(struct boost::python::type_info,struct std::pair<void *,struct boost::python::type_info> (__cdecl*)(void *))" (?register_dynamic_id_aux@objects@python@boost@@YAXUtype_info@23@P6A?AU?$pair@PEAXUtype_info@python@boost@@@std@@PEAX@Z@Z)
libcarla.obj : error LNK2001: unresolved external symbol "void __cdecl boost::python::objects::add_to_namespace(class boost::python::api::object const &,char const *,class boost::python::api::object const &,char const *)" (?add_to_namespace@objects@python@boost@@YAXAEBVobject@api@23@PEBD01@Z)
libcarla.obj : error LNK2001: unresolved external symbol "protected: static struct _object * __cdecl boost::python::objects::enum_base::to_python(struct _typeobject *,long)" (?to_python@enum_base@objects@python@boost@@KAPEAU_object@@PEAU_typeobject@@J@Z)
libcarla.obj : error LNK2001: unresolved external symbol "protected: void __cdecl boost::python::objects::enum_base::add_value(char const *,long)" (?add_value@enum_base@objects@python@boost@@IEAAXPEBDJ@Z)
libcarla.obj : error LNK2001: unresolved external symbol "protected: __cdecl boost::python::objects::enum_base::enum_base(char const *,struct _object * (__cdecl*)(void const *),void * (__cdecl*)(struct _object *),void (__cdecl*)(struct _object *,struct boost::python::converter::rvalue_from_python_stage1_data *),struct boost::python::type_info,char const *)" (??0enum_base@objects@python@boost@@IEAA@PEBDP6APEAU_object@@PEBX@ZP6APEAXPEAU4@@ZP6AX3PEAUrvalue_from_python_stage1_data@converter@23@@ZUtype_info@23@0@Z)
libcarla.obj : error LNK2001: unresolved external symbol "public: virtual unsigned int __cdecl boost::python::objects::py_function_impl_base::max_arity(void)const " (?max_arity@py_function_impl_base@objects@python@boost@@UEBAIXZ)
libcarla.obj : error LNK2001: unresolved external symbol "public: virtual __cdecl boost::python::objects::py_function_impl_base::~py_function_impl_base(void)" (??1py_function_impl_base@objects@python@boost@@UEAA@XZ)
libcarla.obj : error LNK2001: unresolved external symbol "class boost::python::api::object __cdecl boost::python::objects::function_object(struct boost::python::objects::py_function const &,struct std::pair<struct boost::python::detail::keyword const *,struct boost::python::detail::keyword const *> const &)" (?function_object@objects@python@boost@@YA?AVobject@api@23@AEBUpy_function@123@AEBU?$pair@PEBUkeyword@detail@python@boost@@PEBU1234@@std@@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "class boost::python::api::object __cdecl boost::python::objects::function_object(struct boost::python::objects::py_function const &)" (?function_object@objects@python@boost@@YA?AVobject@api@23@AEBUpy_function@123@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "void __cdecl boost::python::objects::stop_iteration_error(void)" (?stop_iteration_error@objects@python@boost@@YAXXZ)
libcarla.obj : error LNK2001: unresolved external symbol "void * __cdecl boost::python::objects::find_dynamic_type(void *,struct boost::python::type_info,struct boost::python::type_info)" (?find_dynamic_type@objects@python@boost@@YAPEAXPEAXUtype_info@23@1@Z)
libcarla.obj : error LNK2001: unresolved external symbol "void __cdecl boost::python::objects::copy_class_object(struct boost::python::type_info const &,struct boost::python::type_info const &)" (?copy_class_object@objects@python@boost@@YAXAEBUtype_info@23@0@Z)
libcarla.obj : error LNK2001: unresolved external symbol "class boost::python::handle<struct _object> __cdecl boost::python::objects::function_handle_impl(struct boost::python::objects::py_function const &)" (?function_handle_impl@objects@python@boost@@YA?AV?$handle@U_object@@@23@AEBUpy_function@123@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "void * __cdecl boost::python::objects::find_static_type(void *,struct boost::python::type_info,struct boost::python::type_info)" (?find_static_type@objects@python@boost@@YAPEAXPEAXUtype_info@23@1@Z)
libcarla.obj : error LNK2001: unresolved external symbol "void __cdecl boost::python::api::setattr(class boost::python::api::object const &,char const *,class boost::python::api::object const &)" (?setattr@api@python@boost@@YAXAEBVobject@123@PEBD0@Z)
libcarla.obj : error LNK2001: unresolved external symbol "class boost::python::api::object __cdecl boost::python::api::getslice(class boost::python::api::object const &,class boost::python::handle<struct _object> const &,class boost::python::handle<struct _object> const &)" (?getslice@api@python@boost@@YA?AVobject@123@AEBV4123@AEBV?$handle@U_object@@@23@1@Z)
libcarla.obj : error LNK2001: unresolved external symbol "class boost::python::api::object __cdecl boost::python::api::getattr(class boost::python::api::object const &,char const *)" (?getattr@api@python@boost@@YA?AVobject@123@AEBV4123@PEBD@Z)
libcarla.obj : error LNK2001: unresolved external symbol "class boost::python::api::object __cdecl boost::python::api::operator<(class boost::python::api::object const &,class boost::python::api::object const &)" (??Mapi@python@boost@@YA?AVobject@012@AEBV3012@0@Z)
libcarla.obj : error LNK2001: unresolved external symbol "void __cdecl boost::python::api::setitem(class boost::python::api::object const &,class boost::python::api::object const &,class boost::python::api::object const &)" (?setitem@api@python@boost@@YAXAEBVobject@123@00@Z)
libcarla.obj : error LNK2001: unresolved external symbol "class boost::python::api::object __cdecl boost::python::api::operator==(class boost::python::api::object const &,class boost::python::api::object const &)" (??8api@python@boost@@YA?AVobject@012@AEBV3012@0@Z)
libcarla.obj : error LNK2001: unresolved external symbol "public: __cdecl boost::python::api::object::object(class boost::python::handle<struct _object> const &)" (??0object@api@python@boost@@QEAA@AEBV?$handle@U_object@@@23@@Z)
libcarla.obj : error LNK2001: unresolved external symbol "class boost::python::api::object __cdecl boost::python::api::getitem(class boost::python::api::object const &,class boost::python::api::object const &)" (?getitem@api@python@boost@@YA?AVobject@123@AEBV4123@0@Z)
libpng.lib(pngwrite.obj) : error LNK2001: unresolved external symbol deflate
libpng.lib(pngwutil.obj) : error LNK2001: unresolved external symbol deflate
osm2odr.lib(OutputDevice_File.obj) : error LNK2001: unresolved external symbol deflate
libpng.lib(pngwrite.obj) : error LNK2001: unresolved external symbol deflateEnd
osm2odr.lib(OptionsIO.obj) : error LNK2001: unresolved external symbol deflateEnd
osm2odr.lib(SUMOSAXReader.obj) : error LNK2001: unresolved external symbol deflateEnd
osm2odr.lib(OutputDevice_File.obj) : error LNK2001: unresolved external symbol deflateEnd
libpng.lib(png.obj) : error LNK2001: unresolved external symbol inflateReset
libpng.lib(pngrutil.obj) : error LNK2001: unresolved external symbol inflateReset
libpng.lib(png.obj) : error LNK2001: unresolved external symbol crc32
libpng.lib(pngread.obj) : error LNK2001: unresolved external symbol inflate
libpng.lib(pngrutil.obj) : error LNK2001: unresolved external symbol inflate
osm2odr.lib(OptionsIO.obj) : error LNK2001: unresolved external symbol inflate
osm2odr.lib(SUMOSAXReader.obj) : error LNK2001: unresolved external symbol inflate
libpng.lib(pngread.obj) : error LNK2001: unresolved external symbol inflateEnd
osm2odr.lib(OptionsIO.obj) : error LNK2001: unresolved external symbol inflateEnd
osm2odr.lib(SUMOSAXReader.obj) : error LNK2001: unresolved external symbol inflateEnd
osm2odr.lib(OutputDevice_File.obj) : error LNK2001: unresolved external symbol inflateEnd
libpng.lib(pngread.obj) : error LNK2001: unresolved external symbol inflateInit_
libpng.lib(pngwutil.obj) : error LNK2001: unresolved external symbol deflateReset
osm2odr.lib(OutputDevice_File.obj) : error LNK2001: unresolved external symbol deflateReset
libpng.lib(pngwutil.obj) : error LNK2001: unresolved external symbol deflateInit2_
osm2odr.lib(OptionsIO.obj) : error LNK2001: unresolved external symbol deflateInit2_
osm2odr.lib(SUMOSAXReader.obj) : error LNK2001: unresolved external symbol deflateInit2_
osm2odr.lib(OutputDevice_File.obj) : error LNK2001: unresolved external symbol deflateInit2_
osm2odr.lib(OptionsIO.obj) : error LNK2001: unresolved external symbol inflateInit2_
osm2odr.lib(SUMOSAXReader.obj) : error LNK2001: unresolved external symbol inflateInit2_
osm2odr.lib(OutputDevice_File.obj) : error LNK2001: unresolved external symbol inflateInit2_
build\lib.win-amd64-3.7\carla\libcarla.cp37-win_amd64.pyd : fatal error LNK1120: 87 unresolved externals
error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\Community\\VC\\Tools\\MSVC\\14.16.27023\\bin\\HostX86\\x64\\link.exe' failed with exit status 1120

-[BuildPythonAPI]: Carla lib for python has been successfully installed in 

[bernatx]

Hi,
Usually when we see this error about unresolved external symbol on boost::python, it is caused by a wrong version of Python or a 32 bits version instead of the 64 bits version of Python required. Can you check that?

[frodozet]

Yes,
Python 3.7.9 and 3.7.2 checked and both failed. Is there a lib dll or special file in the python package i can or should look for?

[frodozet]

Hi
no 32bit version

[Eikeike]

I've had the exact same issue. I don't know if it will help in your case, but here's what I did:

1. Delete Build and PythonAPI/carla/build - Directories
2. Downgrade Python from 3.7.9 to 3.7.7 (it's easiest to completely uninstall python and install the version you need)
3. make clean
4. make rebuild

[frodozet]

doesn't change anything.
Same errors.
Does anyone have an idea about these errors?
They probably are just correct and a hint ?
" void __cdecl boost::python::converter::registry::insert(struct _object * ( ..."
Where ist this symbol defined?

[Manue26]

Hi,

I have exactly the same issue. did you resolve your problem ?

I'm using
Platform: Windows 10
VS 2017 (I also have VS 2019 for other projects)
python 3.9 64bit (but I also have python 3.7 on my computer)
carla: 0.9.10.1

[bernatx]

Hi,

Another cause of that problem is that when you build the first time CARLA, when it setup the boost files it takes a python version installed (if you have several it can take one that you don't want), and then later when compiling the PythonAPI the linker is using another version of Python, so it can not link different versions.

So, be sure that by default the same version of Python is found always, and it is 64 bits.

You can check the python that boost was using looking the files here:
CARLA\Build\boost-1.72.0-install\lib\libboost_python37-vc141-mt-x64-1_72.lib
the ..37.. is the version of Python, in this case 3.7

To rebuild, just remove the CARLA\Build\boost-1.72.0-install folder and try to build PythonAPI again with make PythonAPI.

[xyxu1024]

same issue!

libcarla.obj : error LNK2001: 无法解析的外部符号 "void __cdecl boost::python::throw_error_already_set(void)" (?throw_error_already_set@python@boost@@YAXXZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "struct boost::python::self_ns::self_t boost::python::self_ns::self" (?self@self_ns@python@boost@@3Uself_t@123@A)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void * __cdecl boost::python::converter::get_lvalue_from_python(struct _object *,struct boost::python::converter::registration const &)" (?get_lvalue_from_python@converter@python@boost@@YAPEAXPEAU_object@@AEBUregistration@123@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "struct boost::python::converter::registration const & __cdecl boost::python::converter::registry::lookup_shared_ptr(struct boost::python::type_info)" (?lookup_shared_ptr@registry@converter@python@boost@@YAAEBUregistration@234@Utype_info@34@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "struct boost::python::converter::registration const * __cdecl boost::python::converter::registry::query(struct boost::python::type_info)" (?query@registry@converter@python@boost@@YAPEBUregistration@234@Utype_info@34@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void __cdecl boost::python::converter::registry::push_back(void * (__cdecl*)(struct _object *),void (__cdecl*)(struct _object *,struct boost::python::converter::rvalue_from_python_stage1_data *),struct boost::python::type_info,struct _typeobject const * (__cdecl*)(void))" (?push_back@registry@converter@python@boost@@YAXP6APEAXPEAU_object@@@ZP6AX0PEAUrvalue_from_python_stage1_data@234@@ZUtype_info@34@P6APEBU_typeobject@@XZ@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void __cdecl boost::python::converter::registry::insert(struct _object * (__cdecl*)(void const *),struct boost::python::type_info,struct _typeobject const * (__cdecl*)(void))" (?insert@registry@converter@python@boost@@YAXP6APEAU_object@@PEBX@ZUtype_info@34@P6APEBU_typeobject@@XZ@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void __cdecl boost::python::converter::registry::insert(void * (__cdecl*)(struct _object *),void (__cdecl*)(struct _object *,struct boost::python::converter::rvalue_from_python_stage1_data *),struct boost::python::type_info,struct _typeobject const * (__cdecl*)(void))" (?insert@registry@converter@python@boost@@YAXP6APEAXPEAU_object@@@ZP6AX0PEAUrvalue_from_python_stage1_data@234@@ZUtype_info@34@P6APEBU_typeobject@@XZ@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "struct boost::python::converter::registration const & __cdecl boost::python::converter::registry::lookup(struct boost::python::type_info)" (?lookup@registry@converter@python@boost@@YAAEBUregistration@234@Utype_info@34@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: void __cdecl boost::python::converter::shared_ptr_deleter::operator()(void const *)" (??Rshared_ptr_deleter@converter@python@boost@@QEAAXPEBX@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: __cdecl boost::python::converter::shared_ptr_deleter::~shared_ptr_deleter(void)" (??1shared_ptr_deleter@converter@python@boost@@QEAA@XZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: __cdecl boost::python::converter::shared_ptr_deleter::shared_ptr_deleter(class boost::python::handle<struct _object>)" (??0shared_ptr_deleter@converter@python@boost@@QEAA@V?$handle@U_object@@@23@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void __cdecl boost::python::converter::void_result_from_python(struct _object *)" (?void_result_from_python@converter@python@boost@@YAXPEAU_object@@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void * __cdecl boost::python::converter::rvalue_from_python_stage2(struct _object *,struct boost::python::converter::rvalue_from_python_stage1_data &,struct boost::python::converter::registration const &)" (?rvalue_from_python_stage2@converter@python@boost@@YAPEAXPEAU_object@@AEAUrvalue_from_python_stage1_data@123@AEBUregistration@123@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "struct boost::python::converter::rvalue_from_python_stage1_data __cdecl boost::python::converter::rvalue_from_python_stage1(struct _object *,struct boost::python::converter::registration const &)" (?rvalue_from_python_stage1@converter@python@boost@@YA?AUrvalue_from_python_stage1_data@123@PEAU_object@@AEBUregistration@123@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: __cdecl boost::python::converter::detail::arg_to_python_base::arg_to_python_base(void const volatile *,struct boost::python::converter::registration const &)" (??0arg_to_python_base@detail@converter@python@boost@@QEAA@PEDXAEBUregistration@234@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "struct _object * __cdecl boost::python::converter::do_return_to_python(char const *)" (?do_return_to_python@converter@python@boost@@YAPEAU_object@@PEBD@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "struct _object * __cdecl boost::python::converter::do_return_to_python(struct _object *)" (?do_return_to_python@converter@python@boost@@YAPEAU_object@@PEAU4@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "bool __cdecl boost::python::converter::implicit_rvalue_convertible_from_python(struct _object *,struct boost::python::converter::registration const &)" (?implicit_rvalue_convertible_from_python@converter@python@boost@@YA_NPEAU_object@@AEBUregistration@123@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: struct _typeobject const * __cdecl boost::python::converter::registration::to_python_target_type(void)const " (?to_python_target_type@registration@converter@python@boost@@QEBAPEBU_typeobject@@XZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: struct _typeobject const * __cdecl boost::python::converter::registration::expected_from_python_type(void)const " (?expected_from_python_type@registration@converter@python@boost@@QEBAPEBU_typeobject@@XZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: struct _typeobject * __cdecl boost::python::converter::registration::get_class_object(void)const " (?get_class_object@registration@converter@python@boost@@QEBAPEAU_typeobject@@XZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: struct _object * __cdecl boost::python::converter::registration::to_python(void const volatile *)const " (?to_python@registration@converter@python@boost@@QEBAPEAU_object@@PEDX@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void __cdecl boost::python::converter::throw_no_reference_from_python(struct _object *,struct boost::python::converter::registration const &)" (?throw_no_reference_from_python@converter@python@boost@@YAXPEAU_object@@AEBUregistration@123@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "protected: __cdecl boost::python::detail::list_base::list_base(void)" (??0list_base@detail@python@boost@@IEAA@XZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "protected: __cdecl boost::python::detail::list_base::list_base(class boost::python::api::object const &)" (??0list_base@detail@python@boost@@IEAA@AEBVobject@api@23@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: void __cdecl boost::python::detail::list_base::append(class boost::python::api::object const &)" (?append@list_base@detail@python@boost@@QEAAXAEBVobject@api@34@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "protected: __cdecl boost::python::detail::tuple_base::tuple_base(class boost::python::api::object const &)" (??0tuple_base@detail@python@boost@@IEAA@AEBVobject@api@23@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void __cdecl boost::python::detail::register_exception_handler(class boost::function2<bool,struct boost::python::detail::exception_handler const &,class boost::function0<void> const &> const &)" (?register_exception_handler@detail@python@boost@@YAXAEBV?$function2@_NAEBUexception_handler@detail@python@boost@@AEBV?$function0@X@4@@3@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: bool __cdecl boost::python::detail::exception_handler::operator()(class boost::function0<void> const &)const " (??Rexception_handler@detail@python@boost@@QEBA_NAEBV?$function0@X@3@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "struct _object * boost::python::detail::current_scope" (?current_scope@detail@python@boost@@3PEAU_object@@EA)
libcarla.obj : error LNK2001: 无法解析的外部符号 "protected: __cdecl boost::python::detail::dict_base::dict_base(void)" (??0dict_base@detail@python@boost@@IEAA@XZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "class boost::python::api::object __cdecl boost::python::detail::make_raw_function(struct boost::python::objects::py_function)" (?make_raw_function@detail@python@boost@@YA?AVobject@api@23@Upy_function@objects@23@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "struct _object * __cdecl boost::python::detail::init_module(struct PyModuleDef &,void (__cdecl*)(void))" (?init_module@detail@python@boost@@YAPEAU_object@@AEAUPyModuleDef@@P6AXXZ@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: static void __cdecl boost::python::instance_holder::deallocate(struct _object *,void *)" (?deallocate@instance_holder@python@boost@@SAXPEAU_object@@PEAX@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: static void * __cdecl boost::python::instance_holder::allocate(struct _object *,unsigned __int64,unsigned __int64)" (?allocate@instance_holder@python@boost@@SAPEAXPEAU_object@@_K1@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: void __cdecl boost::python::instance_holder::install(struct _object *)" (?install@instance_holder@python@boost@@QEAAXPEAU_object@@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: virtual __cdecl boost::python::instance_holder::~instance_holder(void)" (??1instance_holder@python@boost@@UEAA@XZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: __cdecl boost::python::instance_holder::instance_holder(void)" (??0instance_holder@python@boost@@QEAA@XZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: class boost::python::handle<struct _object> const & __cdecl boost::python::objects::stl_input_iterator_impl::current(void)const " (?current@stl_input_iterator_impl@objects@python@boost@@QEBAAEBV?$handle@U_object@@@34@XZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: bool __cdecl boost::python::objects::stl_input_iterator_impl::equal(struct boost::python::objects::stl_input_iterator_impl const &)const " (?equal@stl_input_iterator_impl@objects@python@boost@@QEBA_NAEBU1234@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: void __cdecl boost::python::objects::stl_input_iterator_impl::increment(void)" (?increment@stl_input_iterator_impl@objects@python@boost@@QEAAXXZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: __cdecl boost::python::objects::stl_input_iterator_impl::stl_input_iterator_impl(void)" (??0stl_input_iterator_impl@objects@python@boost@@QEAA@XZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: __cdecl boost::python::objects::stl_input_iterator_impl::stl_input_iterator_impl(class boost::python::api::object const &)" (??0stl_input_iterator_impl@objects@python@boost@@QEAA@AEBVobject@api@23@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "class boost::python::handle<struct _typeobject> __cdecl boost::python::objects::registered_class_object(struct boost::python::type_info)" (?registered_class_object@objects@python@boost@@YA?AV?$handle@U_typeobject@@@23@Utype_info@23@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "class boost::python::api::object const & __cdecl boost::python::objects::identity_function(void)" (?identity_function@objects@python@boost@@YAAEBVobject@api@23@XZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "struct _object * __cdecl boost::python::objects::make_nurse_and_patient(struct _object *,struct _object *)" (?make_nurse_and_patient@objects@python@boost@@YAPEAU_object@@PEAU4@0@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void __cdecl boost::python::objects::add_cast(struct boost::python::type_info,struct boost::python::type_info,void * (__cdecl*)(void *),bool)" (?add_cast@objects@python@boost@@YAXUtype_info@23@0P6APEAXPEAX@Z_N@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "protected: void __cdecl boost::python::objects::class_base::make_method_static(char const *)" (?make_method_static@class_base@objects@python@boost@@IEAAXPEBD@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "protected: void __cdecl boost::python::objects::class_base::def_no_init(void)" (?def_no_init@class_base@objects@python@boost@@IEAAXXZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "protected: void __cdecl boost::python::objects::class_base::set_instance_size(unsigned __int64)" (?set_instance_size@class_base@objects@python@boost@@IEAAX_K@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "protected: void __cdecl boost::python::objects::class_base::add_static_property(char const *,class boost::python::api::object const &)" (?add_static_property@class_base@objects@python@boost@@IEAAXPEBDAEBVobject@api@34@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "protected: void __cdecl boost::python::objects::class_base::add_property(char const *,class boost::python::api::object const &,char const *)" (?add_property@class_base@objects@python@boost@@IEAAXPEBDAEBVobject@api@34@0@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "protected: void __cdecl boost::python::objects::class_base::add_property(char const *,class boost::python::api::object const &,class boost::python::api::object const &,char const *)" (?add_property@class_base@objects@python@boost@@IEAAXPEBDAEBVobject@api@34@10@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: __cdecl boost::python::objects::class_base::class_base(char const *,unsigned __int64,struct boost::python::type_info const * const,char const *)" (??0class_base@objects@python@boost@@QEAA@PEBD_KQEBUtype_info@23@0@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void __cdecl boost::python::objects::register_dynamic_id_aux(struct boost::python::type_info,struct std::pair<void *,struct boost::python::type_info> (__cdecl*)(void *))" (?register_dynamic_id_aux@objects@python@boost@@YAXUtype_info@23@P6A?AU?$pair@PEAXUtype_info@python@boost@@@std@@PEAX@Z@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void __cdecl boost::python::objects::add_to_namespace(class boost::python::api::object const &,char const *,class boost::python::api::object const &,char const *)" (?add_to_namespace@objects@python@boost@@YAXAEBVobject@api@23@PEBD01@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "protected: static struct _object * __cdecl boost::python::objects::enum_base::to_python(struct _typeobject *,long)" (?to_python@enum_base@objects@python@boost@@KAPEAU_object@@PEAU_typeobject@@J@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "protected: void __cdecl boost::python::objects::enum_base::add_value(char const *,long)" (?add_value@enum_base@objects@python@boost@@IEAAXPEBDJ@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "protected: __cdecl boost::python::objects::enum_base::enum_base(char const *,struct _object * (__cdecl*)(void const *),void * (__cdecl*)(struct _object *),void (__cdecl*)(struct _object *,struct boost::python::converter::rvalue_from_python_stage1_data *),struct boost::python::type_info,char const *)" (??0enum_base@objects@python@boost@@IEAA@PEBDP6APEAU_object@@PEBX@ZP6APEAXPEAU4@@ZP6AX3PEAUrvalue_from_python_stage1_data@converter@23@@ZUtype_info@23@0@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: virtual unsigned int __cdecl boost::python::objects::py_function_impl_base::max_arity(void)const " (?max_arity@py_function_impl_base@objects@python@boost@@UEBAIXZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: virtual __cdecl boost::python::objects::py_function_impl_base::~py_function_impl_base(void)" (??1py_function_impl_base@objects@python@boost@@UEAA@XZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "class boost::python::api::object __cdecl boost::python::objects::function_object(struct boost::python::objects::py_function const &,struct std::pair<struct boost::python::detail::keyword const *,struct boost::python::detail::keyword const *> const &)" (?function_object@objects@python@boost@@YA?AVobject@api@23@AEBUpy_function@123@AEBU?$pair@PEBUkeyword@detail@python@boost@@PEBU1234@@std@@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "class boost::python::api::object __cdecl boost::python::objects::function_object(struct boost::python::objects::py_function const &)" (?function_object@objects@python@boost@@YA?AVobject@api@23@AEBUpy_function@123@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void __cdecl boost::python::objects::stop_iteration_error(void)" (?stop_iteration_error@objects@python@boost@@YAXXZ)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void * __cdecl boost::python::objects::find_dynamic_type(void *,struct boost::python::type_info,struct boost::python::type_info)" (?find_dynamic_type@objects@python@boost@@YAPEAXPEAXUtype_info@23@1@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void __cdecl boost::python::objects::copy_class_object(struct boost::python::type_info const &,struct boost::python::type_info const &)" (?copy_class_object@objects@python@boost@@YAXAEBUtype_info@23@0@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "class boost::python::handle<struct _object> __cdecl boost::python::objects::function_handle_impl(struct boost::python::objects::py_function const &)" (?function_handle_impl@objects@python@boost@@YA?AV?$handle@U_object@@@23@AEBUpy_function@123@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void * __cdecl boost::python::objects::find_static_type(void *,struct boost::python::type_info,struct boost::python::type_info)" (?find_static_type@objects@python@boost@@YAPEAXPEAXUtype_info@23@1@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void __cdecl boost::python::api::setattr(class boost::python::api::object const &,char const *,class boost::python::api::object const &)" (?setattr@api@python@boost@@YAXAEBVobject@123@PEBD0@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "class boost::python::api::object __cdecl boost::python::api::getslice(class boost::python::api::object const &,class boost::python::handle<struct _object> const &,class boost::python::handle<struct _object> const &)" (?getslice@api@python@boost@@YA?AVobject@123@AEBV4123@AEBV?$handle@U_object@@@23@1@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "class boost::python::api::object __cdecl boost::python::api::getattr(class boost::python::api::object const &,char const *)" (?getattr@api@python@boost@@YA?AVobject@123@AEBV4123@PEBD@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "class boost::python::api::object __cdecl boost::python::api::operator<(class boost::python::api::object const &,class boost::python::api::object const &)" (??Mapi@python@boost@@YA?AVobject@012@AEBV3012@0@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "void __cdecl boost::python::api::setitem(class boost::python::api::object const &,class boost::python::api::object const &,class boost::python::api::object const &)" (?setitem@api@python@boost@@YAXAEBVobject@123@00@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "class boost::python::api::object __cdecl boost::python::api::operator==(class boost::python::api::object const &,class boost::python::api::object const &)" (??8api@python@boost@@YA?AVobject@012@AEBV3012@0@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "public: __cdecl boost::python::api::object::object(class boost::python::handle<struct _object> const &)" (??0object@api@python@boost@@QEAA@AEBV?$handle@U_object@@@23@@Z)
libcarla.obj : error LNK2001: 无法解析的外部符号 "class boost::python::api::object __cdecl boost::python::api::getitem(class boost::python::api::object const &,class boost::python::api::object const &)" (?getitem@api@python@boost@@YA?AVobject@123@AEBV4123@0@Z)
build\lib.win-amd64-3.7\carla\libcarla.cp37-win_amd64.pyd : fatal error LNK1120: 77 个无法解析的外部命令
error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Community\\VC\\Tools\\MSVC\\14.28.29910\\bin\\HostX86\\x64\\link.exe' failed with exit status 1120

[7788boy]

Hi,
I tried the following steps and it works.

1. Remove all the other versions of Python. (I uninstall Anaconda and reinstall Python 3.7.9 from Python.org.)
2. Add Python to path variable.
3. Delete the folders naming with "-install" in CARLA\Build
   
4. make clean
5. make PythonAPI

I hope it will help!

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[Yebihashu]

I solved such problem that happened to me,
A description is given here #4060 (comment)