Linker error while compiling halley-cmd project

[Gerard097]

I'm having the following linker errors when trying to compile the halley-cmd project:

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
1>halley-tools_d.lib(asset_pack_inspector.obj) : error LNK2019: unresolved external symbol "public: class Halley::Deserializer & __cdecl Halley::Deserializer::operator>>(class gsl::span<enum gsl::byte,-1> &)" (??5Deserializer@Halley@@QEAAAEAV01@AEAV?$span@W4byte@gsl@@$0?0@gsl@@@z) referenced in function "public: void __cdecl Halley::AssetPackInspector::parse(class std::vector<unsigned char,class std::allocator > const &)" (?parse@AssetPackInspector@Halley@@QEAAXAEBV?$vector@EV?$allocator@E@std@@@std@@@z)
1>halley-tools_d.lib(asset_pack_inspector.obj) : error LNK2019: unresolved external symbol "public: static unsigned __int64 __cdecl Halley::Hash::hash(class gsl::span<enum gsl::byte const ,-1>)" (?hash@Hash@Halley@@SA_KV?$span@$$CBW4byte@gsl@@$0?0@gsl@@@z) referenced in function "private: void __cdecl Halley::AssetPackInspector::parseTypedDB(class Halley::Deserializer &,class std::vector<unsigned char,class std::allocator > const &)" (?parseTypedDB@AssetPackInspector@Halley@@AEAAXAEAVDeserializer@2@AEBV?$vector@EV?$allocator@E@std@@@std@@@z)
1>halley-tools_d.lib(asset_pack_inspector.obj) : error LNK2019: unresolved external symbol "public: void __cdecl Halley::Hash::Hasher::feedBytes(class gsl::span<enum gsl::byte const ,-1>)" (?feedBytes@Hasher@Hash@Halley@@QEAAXV?$span@$$CBW4byte@gsl@@$0?0@gsl@@@z) referenced in function "private: void __cdecl Halley::AssetPackInspector::computeHash(void)" (?computeHash@AssetPackInspector@Halley@@AEAAXXZ)
1>halley-tools_d.lib(message_schema.obj) : error LNK2001: unresolved external symbol "public: static class std::basic_string<char,struct std::char_traits,class std::allocator > YAML::detail::node_data::empty_scalar" (?empty_scalar@node_data@detail@YAML@@2v?$basic_string@DU?$char_traits@D@std@@v?$allocator@D@2@@std@@A)
1>halley-tools_d.lib(custom_type_schema.obj) : error LNK2001: unresolved external symbol "public: static class std::basic_string<char,struct std::char_traits,class std::allocator > YAML::detail::node_data::empty_scalar" (?empty_scalar@node_data@detail@YAML@@2v?$basic_string@DU?$char_traits@D@std@@v?$allocator@D@2@@std@@A)
1>halley-tools_d.lib(animation_importer.obj) : error LNK2001: unresolved external symbol "public: static class std::basic_string<char,struct std::char_traits,class std::allocator > YAML::detail::node_data::empty_scalar" (?empty_scalar@node_data@detail@YAML@@2v?$basic_string@DU?$char_traits@D@std@@v?$allocator@D@2@@std@@A)
1>halley-tools_d.lib(config_importer.obj) : error LNK2001: unresolved external symbol "public: static class std::basic_string<char,struct std::char_traits,class std::allocator > YAML::detail::node_data::empty_scalar" (?empty_scalar@node_data@detail@YAML@@2v?$basic_string@DU?$char_traits@D@std@@v?$allocator@D@2@@std@@A)
1>halley-tools_d.lib(codegen.obj) : error LNK2001: unresolved external symbol "public: static class std::basic_string<char,struct std::char_traits,class std::allocator > YAML::detail::node_data::empty_scalar" (?empty_scalar@node_data@detail@YAML@@2v?$basic_string@DU?$char_traits@D@std@@v?$allocator@D@2@@std@@A)
1>halley-tools_d.lib(check_assets_task.obj) : error LNK2001: unresolved external symbol "public: static class std::basic_string<char,struct std::char_traits,class std::allocator > YAML::detail::node_data::empty_scalar" (?empty_scalar@node_data@detail@YAML@@2v?$basic_string@DU?$char_traits@D@std@@v?$allocator@D@2@@std@@A)
1>halley-tools_d.lib(component_schema.obj) : error LNK2001: unresolved external symbol "public: static class std::basic_string<char,struct std::char_traits,class std::allocator > YAML::detail::node_data::empty_scalar" (?empty_scalar@node_data@detail@YAML@@2v?$basic_string@DU?$char_traits@D@std@@v?$allocator@D@2@@std@@A)
1>halley-tools_d.lib(system_schema.obj) : error LNK2001: unresolved external symbol "public: static class std::basic_string<char,struct std::char_traits,class std::allocator > YAML::detail::node_data::empty_scalar" (?empty_scalar@node_data@detail@YAML@@2v?$basic_string@DU?$char_traits@D@std@@v?$allocator@D@2@@std@@A)
1>halley-tools_d.lib(spritesheet_importer.obj) : error LNK2001: unresolved external symbol "public: __cdecl Halley::Serializer::Serializer(class gsl::span<enum gsl::byte,-1>)" (??0Serializer@Halley@@qeaa@V?$span@W4byte@gsl@@$0?0@gsl@@@z)
1>halley-tools_d.lib(bitmap_font_importer.obj) : error LNK2001: unresolved external symbol "public: __cdecl Halley::Serializer::Serializer(class gsl::span<enum gsl::byte,-1>)" (??0Serializer@Halley@@qeaa@V?$span@W4byte@gsl@@$0?0@gsl@@@z)
1>halley-tools_d.lib(shader_importer.obj) : error LNK2001: unresolved external symbol "public: __cdecl Halley::Serializer::Serializer(class gsl::span<enum gsl::byte,-1>)" (??0Serializer@Halley@@qeaa@V?$span@W4byte@gsl@@$0?0@gsl@@@z)
1>halley-tools_d.lib(font_generator.obj) : error LNK2001: unresolved external symbol "public: __cdecl Halley::Serializer::Serializer(class gsl::span<enum gsl::byte,-1>)" (??0Serializer@Halley@@qeaa@V?$span@W4byte@gsl@@$0?0@gsl@@@z)
1>halley-tools_d.lib(material_importer.obj) : error LNK2001: unresolved external symbol "public: __cdecl Halley::Serializer::Serializer(class gsl::span<enum gsl::byte,-1>)" (??0Serializer@Halley@@qeaa@V?$span@W4byte@gsl@@$0?0@gsl@@@z)
1>halley-tools_d.lib(config_importer.obj) : error LNK2001: unresolved external symbol "public: __cdecl Halley::Serializer::Serializer(class gsl::span<enum gsl::byte,-1>)" (??0Serializer@Halley@@qeaa@V?$span@W4byte@gsl@@$0?0@gsl@@@z)
1>halley-tools_d.lib(audio_event_importer.obj) : error LNK2001: unresolved external symbol "public: __cdecl Halley::Serializer::Serializer(class gsl::span<enum gsl::byte,-1>)" (??0Serializer@Halley@@qeaa@V?$span@W4byte@gsl@@$0?0@gsl@@@z)
1>halley-tools_d.lib(sprite_importer.obj) : error LNK2001: unresolved external symbol "public: __cdecl Halley::Serializer::Serializer(class gsl::span<enum gsl::byte,-1>)" (??0Serializer@Halley@@qeaa@V?$span@W4byte@gsl@@$0?0@gsl@@@z)
1>halley-tools_d.lib(import_assets_database.obj) : error LNK2001: unresolved external symbol "public: __cdecl Halley::Serializer::Serializer(class gsl::span<enum gsl::byte,-1>)" (??0Serializer@Halley@@qeaa@V?$span@W4byte@gsl@@$0?0@gsl@@@z)
1>halley-tools_d.lib(font_importer.obj) : error LNK2001: unresolved external symbol "public: __cdecl Halley::Serializer::Serializer(class gsl::span<enum gsl::byte,-1>)" (??0Serializer@Halley@@qeaa@V?$span@W4byte@gsl@@$0?0@gsl@@@z)
1>halley-tools_d.lib(image_importer.obj) : error LNK2001: unresolved external symbol "public: __cdecl Halley::Serializer::Serializer(class gsl::span<enum gsl::byte,-1>)" (??0Serializer@Halley@@qeaa@V?$span@W4byte@gsl@@$0?0@gsl@@@z)
1>halley-tools_d.lib(animation_importer.obj) : error LNK2001: unresolved external symbol "public: __cdecl Halley::Serializer::Serializer(class gsl::span<enum gsl::byte,-1>)" (??0Serializer@Halley@@qeaa@V?$span@W4byte@gsl@@$0?0@gsl@@@z)
1>halley-tools_d.lib(image_importer.obj) : error LNK2019: unresolved external symbol "public: __cdecl Halley::Deserializer::Deserializer(class gsl::span<enum gsl::byte const ,-1>)" (??0Deserializer@Halley@@qeaa@V?$span@$$CBW4byte@gsl@@$0?0@gsl@@@z) referenced in function "public: virtual void __cdecl Halley::ImageImporter::import(class Halley::ImportingAsset const &,class Halley::IAssetCollector &)" (?import@ImageImporter@Halley@@UEAAXAEBVImportingAsset@2@AEAVIAssetCollector@2@@z)
1>halley-tools_d.lib(image_importer.obj) : error LNK2019: unresolved external symbol "public: __cdecl Halley::Image::Image(class gsl::span<enum gsl::byte const ,-1>,enum Halley::Image::Format)" (??0Image@Halley@@qeaa@V?$span@$$CBW4byte@gsl@@$0?0@gsl@@W4Format@01@@z) referenced in function "public: virtual void __cdecl Halley::ImageImporter::import(class Halley::ImportingAsset const &,class Halley::IAssetCollector &)" (?import@ImageImporter@Halley@@UEAAXAEBVImportingAsset@2@AEAVIAssetCollector@2@@z)
1>halley-tools_d.lib(sprite_importer.obj) : error LNK2001: unresolved external symbol "public: __cdecl Halley::Image::Image(class gsl::span<enum gsl::byte const ,-1>,enum Halley::Image::Format)" (??0Image@Halley@@qeaa@V?$span@$$CBW4byte@gsl@@$0?0@gsl@@W4Format@01@@z)
1>halley-tools_d.lib(aseprite_reader.obj) : error LNK2001: unresolved external symbol "public: __cdecl Halley::Image::Image(class gsl::span<enum gsl::byte const ,-1>,enum Halley::Image::Format)" (??0Image@Halley@@qeaa@V?$span@$$CBW4byte@gsl@@$0?0@gsl@@W4Format@01@@z)
1>halley-tools_d.lib(spritesheet_importer.obj) : error LNK2019: unresolved external symbol "public: void __cdecl Halley::SpriteSheet::loadJson(class gsl::span<enum gsl::byte const ,-1>)" (?loadJson@SpriteSheet@Halley@@QEAAXV?$span@$$CBW4byte@gsl@@$0?0@gsl@@@z) referenced in function "public: virtual void __cdecl Halley::SpriteSheetImporter::import(class Halley::ImportingAsset const &,class Halley::IAssetCollector &)" (?import@SpriteSheetImporter@Halley@@UEAAXAEBVImportingAsset@2@AEAVIAssetCollector@2@@z)
1>halley-tools_d.lib(aseprite_reader.obj) : error LNK2001: unresolved external symbol "public: void __cdecl Halley::SpriteSheet::loadJson(class gsl::span<enum gsl::byte const ,-1>)" (?loadJson@SpriteSheet@Halley@@QEAAXV?$span@$$CBW4byte@gsl@@$0?0@gsl@@@z)
1>halley-tools_d.lib(bitmap_font_importer.obj) : error LNK2019: unresolved external symbol "public: static class Halley::Vector2D<int,class Halley::Angle > __cdecl Halley::Image::getImageSize(class gsl::span<enum gsl::byte const ,-1>)" (?getImageSize@Image@Halley@@sa?AV?$Vector2D@HV?$Angle@M@Halley@@@2@V?$span@$$CBW4byte@gsl@@$0?0@gsl@@@z) referenced in function "public: virtual void __cdecl Halley::BitmapFontImporter::import(class Halley::ImportingAsset const &,class Halley::IAssetCollector &)" (?import@BitmapFontImporter@Halley@@UEAAXAEBVImportingAsset@2@AEAVIAssetCollector@2@@z)
1>halley-tools_d.lib(aseprite_file.obj) : error LNK2019: unresolved external symbol "public: static class std::vector<unsigned char,class std::allocator > __cdecl Halley::Compression::decompressRaw(class gsl::span<enum gsl::byte const ,-1>,unsigned __int64,unsigned __int64)" (?decompressRaw@Compression@Halley@@sa?AV?$vector@EV?$allocator@E@std@@@std@@v?$span@$$CBW4byte@gsl@@$0?0@gsl@@_K1@Z) referenced in function "private: void __cdecl Halley::AsepriteFile::addCelChunk(class gsl::span<enum gsl::byte const ,-1>)" (?addCelChunk@AsepriteFile@Halley@@AEAAXV?$span@$$CBW4byte@gsl@@$0?0@gsl@@@z)
1>D:\Engines\halley\bin\halley-cmd.exe : fatal error LNK1120: 10 unresolved externals
1>Done building project "halley-cmd.vcxproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 7 up-to-date, 0 skipped ==========