yaml-cpp unresolved external symbol error - c++

Question

I'm trying to build a solution in Visual Studio 2017. And I get these errors:
1>------ Build started: Project: UA_Parser, Configuration: Release x64 ------
1>UaParserTest.cpp
1>UaParser.obj : error LNK2001: unresolved external symbol "class YAML::Node __cdecl YAML::LoadFile(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?LoadFile#YAML##YA?AVNode#1#AEBV?$basic_string#DU?$char_traits#D#std##V?$allocator#D#2##std###Z)
1>UaParser.obj : error LNK2001: unresolved external symbol "public: virtual __cdecl YAML::InvalidNode::~InvalidNode(void)" (??1InvalidNode#YAML##UEAA#XZ)
1>UaParser.obj : error LNK2001: unresolved external symbol "public: virtual __cdecl YAML::Exception::~Exception(void)" (??1Exception#YAML##UEAA#XZ)
1>UaParser.obj : error LNK2001: unresolved external symbol "public: virtual __cdecl YAML::RepresentationException::~RepresentationException(void)" (??1RepresentationException#YAML##UEAA#XZ)
1>UaParser.obj : error LNK2001: unresolved external symbol "public: virtual __cdecl YAML::BadConversion::~BadConversion(void)" (??1BadConversion#YAML##UEAA#XZ)
1>UaParser.obj : error LNK2001: unresolved external symbol "public: virtual __cdecl YAML::BadSubscript::~BadSubscript(void)" (??1BadSubscript#YAML##UEAA#XZ)
1>UaParser.obj : error LNK2001: unresolved external symbol "public: class YAML::detail::node & __cdecl YAML::detail::memory::create_node(void)" (?create_node#memory#detail#YAML##QEAAAEAVnode#23#XZ)
1>UaParser.obj : error LNK2001: unresolved external symbol "private: void __cdecl YAML::detail::node_data::convert_to_map(class std::shared_ptr<class YAML::detail::memory_holder>)" (?convert_to_map#node_data#detail#YAML##AEAAXV?$shared_ptr#Vmemory_holder#detail#YAML###std###Z)
1>UaParser.obj : error LNK2001: unresolved external symbol "private: void __cdecl YAML::detail::node_data::insert_map_pair(class YAML::detail::node &,class YAML::detail::node &)" (?insert_map_pair#node_data#detail#YAML##AEAAXAEAVnode#23#0#Z)
1>UaParser.obj : error LNK2001: unresolved external symbol "public: class YAML::detail::node_iterator_base<class YAML::detail::node> __cdecl YAML::detail::node_data::end(void)" (?end#node_data#detail#YAML##QEAA?AV?$node_iterator_base#Vnode#detail#YAML###23#XZ)
1>UaParser.obj : error LNK2001: unresolved external symbol "public: class YAML::detail::node_iterator_base<class YAML::detail::node> __cdecl YAML::detail::node_data::begin(void)" (?begin#node_data#detail#YAML##QEAA?AV?$node_iterator_base#Vnode#detail#YAML###23#XZ)
1>UaParser.obj : error LNK2001: unresolved external symbol "public: void __cdecl YAML::detail::node_data::set_scalar(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?set_scalar#node_data#detail#YAML##QEAAXAEBV?$basic_string#DU?$char_traits#D#std##V?$allocator#D#2##std###Z)
1>UaParser.obj : error LNK2001: unresolved external symbol "public: void __cdecl YAML::detail::node_data::set_null(void)" (?set_null#node_data#detail#YAML##QEAAXXZ)
1>UaParser.obj : error LNK2001: unresolved external symbol "public: void __cdecl YAML::detail::node_data::mark_defined(void)" (?mark_defined#node_data#detail#YAML##QEAAXXZ)
1>UaParser.obj : error LNK2001: unresolved external symbol "public: static class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > YAML::detail::node_data::empty_scalar" (?empty_scalar#node_data#detail#YAML##2V?$basic_string#DU?$char_traits#D#std##V?$allocator#D#2##std##A)
1>UaParser.obj : error LNK2001: unresolved external symbol "public: void __cdecl YAML::detail::memory_holder::merge(class YAML::detail::memory_holder &)" (?merge#memory_holder#detail#YAML##QEAAXAEAV123##Z)
1>C:\bmetric\C++ Projects\UA_Parser\x64\Release\UA_Parser.exe : fatal error LNK1120: 16 unresolved externals
1>Done building project "UA_Parser.vcxproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
I have a feeling they can be solved by linking, but I am not sure what to link (the precise folder).
So far, I have built the yaml-cpp as described on github. Also, I have added the ..\yaml-cpp\include folder in the Additional Include Directories from Configuration Properties >> C/C++ >> General and tried to include in the Additional Library Directories (Linker) various folders, unsuccessfully.
Never used YAML before. And I don't link stuff often.

Answer 1

I was getting the unresolved external symbols errors because I was including #include <yaml-cpp/node/node.h>, which is what Resharper recommended me(and it's is correct 99.9% of the time). In this case it's a wrong header and what I should have been including is: #include <yaml-cpp/yaml.h>.
I fixed my includes in my files and it built successfully.