Project build failed on windows10 vs2017

[lexiaoyao12138]

After attempts, almost all versions fail to build the proj project on Windows 10 VS2017, with Windows SDK 10.0.*, specifically failing to compile defmodel.cpp.

this is compile defmodel.cpp

1>------ Build started: Project: proj, Configuration: Debug x64 ------
1>defmodel.cpp
1>C:\Users\dyz\Documents\vs2017_IDE\VC\Tools\MSVC\14.10.25017\include\type_traits(184): error C2672: 'std::declval': no matching overloaded function found
1>c:\users\dyz\documents\proj\proj-9.4.0\include\proj\internal\vendor/nlohmann/json.hpp(19615): note: see reference to class template instantiation 'std::add_rvalue_reference<proj_nlohmann::basic_json<std::map,std::vector,std::string,bool,int64_t,uint64_t,double,std::allocator,proj_nlohmann::adl_serializer,std::vector<uint8_t,std::allocator<_Ty>>> &>' being compiled
1>        with
1>        [
1>            _Ty=uint8_t
1>        ]
1>C:\Users\dyz\Documents\vs2017_IDE\VC\Tools\MSVC\14.10.25017\include\type_traits(707): note: see reference to class template instantiation 'proj_nlohmann::basic_json<std::map,std::vector,std::string,bool,int64_t,uint64_t,double,std::allocator,proj_nlohmann::adl_serializer,std::vector<uint8_t,std::allocator<_Ty>>>' being compiled
1>        with
1>        [
1>            _Ty=uint8_t
1>        ]
1>C:\Users\dyz\Documents\vs2017_IDE\VC\Tools\MSVC\14.10.25017\include\type_traits(736): note: see reference to class template instantiation 'std::is_nothrow_constructible<_Ty,proj_nlohmann::basic_json<std::map,std::vector,std::string,bool,int64_t,uint64_t,double,std::allocator,proj_nlohmann::adl_serializer,std::vector<uint8_t,std::allocator<unsigned char>>> &&>' being compiled
1>        with
1>        [
1>            _Ty=proj_nlohmann::json
1>        ]
1>c:\users\dyz\documents\proj\proj-9.4.0\include\proj\internal\vendor/nlohmann/json.hpp(25228): note: see reference to class template instantiation 'std::is_nothrow_move_constructible<proj_nlohmann::json>' being compiled
1>C:\Users\dyz\Documents\vs2017_IDE\VC\Tools\MSVC\14.10.25017\include\type_traits(184): error C2770: invalid explicit template argument(s) for 'add_rvalue_reference<_Ty>::type std::declval(void) noexcept'
1>C:\Users\dyz\Documents\vs2017_IDE\VC\Tools\MSVC\14.10.25017\include\type_traits(190): note: see declaration of 'std::declval'
1>Done building project "proj.vcxproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

[rouault]

The error occurs in the vendored nlohmann/json library and looks similar to nlohmann/json#2192. Nothing we can do about. The only solution is to update your compiler to a more up to date version