June Liu

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[MSVC] When building Google_Protobuf emits error C2338 on MSVC

Hi @sbenzaquen @jorgbrown, Any update of this issue?

[MSVC] GRPC failed to build due to error C2370: 'google::protobuf::internal::MapField<Derived,Key,T,kKeyFieldType_,kValueFieldType_>::kVTable': redefinition; different storage class

> I'm not sure what `set _CL_= /permissive-` does, but from the error, it looks like a protobuf error. Do you have any reason to believe that gRPC is doing...

[MSVC] GRPC failed to build due to error C2370: 'google::protobuf::internal::MapField<Derived,Key,T,kKeyFieldType_,kValueFieldType_>::kVTable': redefinition; different storage class

> @Zhaojun-Liu I have the exact same error. Did you find a solution? > > ```shell > Z:\projects\cpp\network\mygrpc\external\grpc-src\third_party\protobuf\src\google/protobuf/map_field.h(682): error C2370: 'google::protobuf::internal::MapField::kVTable': redefinition; different storage class > ``` @JeySamir You can...

[MSVC] GRPC failed to build due to error C2370: 'google::protobuf::internal::MapField<Derived,Key,T,kKeyFieldType_,kValueFieldType_>::kVTable': redefinition; different storage class

> If you are able to build protobuf and install without error with this option, could you try using `-DgRPC_PROTOBUF_PROVIDER=package` when building gRPC? This will find the installed protobuf library...

[MSVC] GRPC failed to build due to error C2370: 'google::protobuf::internal::MapField<Derived,Key,T,kKeyFieldType_,kValueFieldType_>::kVTable': redefinition; different storage class

> For `-DgRPC_PROTOBUF_PROVIDER=package` to work, protobuf should indeed be already installed. > > I suspect that you are running into the same error with the absl dependency that you are...

[MSVC] Libfacedetection build failed due to error C2039: 'to_string': is not a member of 'std'

> Looks like the `string` header is missing. Have a try with including it in the beginning of `facedetectcnn.cpp`: > > ```diff > #include "facedetectcnn.h" > #include > #include //for...

[MSVC] Forgottenserver build failed due to fatal error LNK1181: cannot open input file 'cryptopp-static.lib'

> Any errors during vcpkg command? If yes, it may require updating portfile for cryptopp manually There is no error during vcpkg command. You can check the logs [configure.log](https://github.com/otland/forgottenserver/files/10217952/configure.log) The...

[MSVC] Forgottenserver build failed due to fatal error LNK1181: cannot open input file 'cryptopp-static.lib'

@Kezuino According to what you said, I only kept one compiler and tried several times, and the problem reproduced steadily. My vcpkg commit is e46521d and I also tried the...

[MSVC] [WINDOWS] Error copying file "C:/gitP/google/protobuf/upb/base/descriptor_constants.h" to "C:/gitP/google/protobuf/build_amd64/tmp-install-test/C:/gitP/google/protobuf/upb/base/descriptor_constants.h". 'true' is not recognized as an internal or external command, operable program or batch file.

> Seems like this is a result of something like https://stackoverflow.com/questions/22046780/whats-the-windows-command-shell-equivalent-of-bashs-true-command though its not clear to me where. > > AFAICT, this doesn't obviously seem to be a protobuf issue...

[MSVC] [WINDOWS] Error copying file "C:/gitP/google/protobuf/upb/base/descriptor_constants.h" to "C:/gitP/google/protobuf/build_amd64/tmp-install-test/C:/gitP/google/protobuf/upb/base/descriptor_constants.h". 'true' is not recognized as an internal or external command, operable program or batch file.

> I don't have access to a Windows system to reproduce the issue. Would it be possible to use https://git-scm.com/docs/git-bisect to pinpoint what commit broke this for you? @JasonLunn This...