May I know which version you are using?

I user protobuf master.
I had download the 3.0.0-alpha-3-windows-fix version,these no errors.

You can try the version in 3.0.0-alpha-3 release. We fixed some errors on windows there.

i had download the Protocol Buffers v3.0.0-alpha-3 and then it also shwo some link error.can you help me?

there are the error logs:
7> mock_code_generator.cc
6>main.obj : warning LNK4075: 忽略“/EDITANDCONTINUE”(由于“/SAFESEH”规范)
6>libprotoc.lib(java_field.obj) : error LNK2019: 无法解析的外部符号 "public: __thiscall google::protobuf::compiler::java::ImmutableEnumFieldLiteGenerator::ImmutableEnumFieldLiteGenerator(class google::protobuf::FieldDescriptor const *,int,int,class google::protobuf::compiler::java::Context *)" (??0ImmutableEnumFieldLiteGenerator@java@compiler@protobuf@google@@QAE@PBVFieldDescriptor@34@HHPAVContext@1234@@z)，该符号在函数 "class google::protobuf::compiler::java::ImmutableFieldLiteGenerator * __cdecl google::protobuf::compiler::java::anonymous namespace'::MakeImmutableLiteGenerator(class google::protobuf::FieldDescriptor const *,int,int,class google::protobuf::compiler::java::Context *)" (?MakeImmutableLiteGenerator@?A0xc677eb6e@java@compiler@protobuf@google@@YAPAVImmutableFieldLiteGenerator@2345@PBVFieldDescriptor@45@HHPAVContext@2345@@Z) 中被引用 6>libprotoc.lib(java_field.obj) : error LNK2019: 无法解析的外部符号 "public: __thiscall google::protobuf::compiler::java::ImmutableEnumOneofFieldLiteGenerator::ImmutableEnumOneofFieldLiteGenerator(class google::protobuf::FieldDescriptor const *,int,int,class google::protobuf::compiler::java::Context *)" (??0ImmutableEnumOneofFieldLiteGenerator@java@compiler@protobuf@google@@QAE@PBVFieldDescriptor@34@HHPAVContext@1234@@Z)，该符号在函数 "class google::protobuf::compiler::java::ImmutableFieldLiteGenerator * __cdecl google::protobuf::compiler::java::anonymous namespace'::MakeImmutableLiteGenerator(class google::protobuf::FieldDescriptor const *,int,int,class google::protobuf::compiler::java::Context *)" (?MakeImmutableLiteGenerator@?A0xc677eb6e@java@compiler@protobuf@google@@YAPAVImmutableFieldLiteGenerator@2345@PBVFieldDescriptor@45@HHPAVContext@2345@@z) 中被引用
6>libprotoc.lib(java_field.obj) : error LNK2019: 无法解析的外部符号 "public: __thiscall google::protobuf::compiler::java::RepeatedImmutableEnumFieldLiteGenerator::RepeatedImmutableEnumFieldLiteGenerator(class google::protobuf::FieldDescriptor const *,int,int,class google::protobuf::compiler::java::Context *)" (??0RepeatedImmutableEnumFieldLiteGenerator@java@compiler@protobuf@google@@QAE@PBVFieldDescriptor@34@HHPAVContext@1234@@z)，该符号在函数 "class google::protobuf::compiler::java::ImmutableFieldLiteGenerator * __cdecl google::protobuf::compiler::java::`anonymous namespace'::MakeImmutableLiteGenerator(class google::protobuf::FieldDescriptor const *,int,int,class google::protobuf::compiler::java::Context *)" (?MakeImmutableLiteGenerator@?A0xc677eb6e@java@compiler@protobuf@google@@YAPAVImmutableFieldLiteGenerator@2345@PBVFieldDescriptor@45@HHPAVContext@2345@@z) 中被引用
6>libprotobuf.lib(text_format.obj) : error LNK2019: 无法解析的外部符号 "bool __cdecl google::protobuf::internal::ParseAnyTypeUrl(class std::basic_string<char,struct std::char_traits,class std::allocator > const &,class std::basic_string<char,struct std::char_traits,class std::allocator > *)" (?ParseAnyTypeUrl@internal@protobuf@google@@YA_NABV?$basic_string@DU?$char_traits@D@std@@v?$allocator@D@2@@std@@Pav45@@z)，该符号在函数 "private: bool __thiscall google::protobuf::TextFormat::Printer::PrintAny(class google::protobuf::Message const &,class google::protobuf::TextFormat::Printer::TextGenerator &)const " (?PrintAny@Printer@TextFormat@protobuf@google@@ABE_NABVMessage@34@AAVTextGenerator@1234@@z) 中被引用
6>libprotobuf.lib(text_format.obj) : error LNK2019: 无法解析的外部符号 "bool __cdecl google::protobuf::internal::GetAnyFieldDescriptors(class google::protobuf::Message const &,class google::protobuf::FieldDescriptor const * *,class google::protobuf::FieldDescriptor const * *)" (?GetAnyFieldDescriptors@internal@protobuf@google@@YA_NABVMessage@23@PAPBVFieldDescriptor@23@1@Z)，该符号在函数 "private: bool __thiscall google::protobuf::TextFormat::Parser::ParserImpl::ConsumeField(class google::protobuf::Message *)" (?ConsumeField@ParserImpl@Parser@TextFormat@protobuf@google@@AAE_NPAVMessage@45@@z) 中被引用
6>libprotobuf.lib(text_format.obj) : error LNK2001: 无法解析的外部符号 "char const * const google::protobuf::internal::kAnyFullTypeName" (?kAnyFullTypeName@internal@protobuf@google@@3QBDB)
6>libprotobuf.lib(text_format.obj) : error LNK2001: 无法解析的外部符号 "char const * const google::protobuf::internal::kTypeGoogleApisComPrefix" (?kTypeGoogleApisComPrefix@internal@protobuf@google@@3QBDB)
6>Debug\protoc.exe : fatal error LNK1120: 7 个无法解析的外部命令
8>------ 已启动全部重新生成: 项目: lite-test, 配置: Debug Win32 ------
8> Generating unittest_lite.pb.{h,cc}...
8> 'Debug\protoc' 不是内部或外部命令，也不是可运行的程序
8> 或批处理文件。
8> Generating unittest_import_lite.pb.{h,cc}...
8> 'Debug\protoc' 不是内部或外部命令，也不是可运行的程序
8> 或批处理文件。
8> Generating unittest_import_public_lite.pb.{h,cc}...
8> 'Debug\protoc' 不是内部或外部命令，也不是可运行的程序
8> 或批处理文件。
8> Generating map_lite_unittest.pb.{h,cc}...
8> 'Debug\protoc' 不是内部或外部命令，也不是可运行的程序
8> 或批处理文件。
8>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V110\Microsoft.CppCommon.targets(172,5): error MSB6006: “cmd.exe”已退出，代码为 9009。
7> test_plugin.cc
7> 正在生成代码...
7>test_plugin.obj : warning LNK4075: 忽略“/EDITANDCONTINUE”(由于“/SAFESEH”规范)
7>libprotobuf.lib(text_format.obj) : error LNK2019: 无法解析的外部符号 "bool __cdecl google::protobuf::internal::ParseAnyTypeUrl(class std::basic_string<char,struct std::char_traits,class std::allocator > const &,class std::basic_string<char,struct std::char_traits,class std::allocator > *)" (?ParseAnyTypeUrl@internal@protobuf@google@@YA_NABV?$basic_string@DU?$char_traits@D@std@@v?$allocator@D@2@@std@@Pav45@@z)，该符号在函数 "private: bool __thiscall google::protobuf::TextFormat::Printer::PrintAny(class google::protobuf::Message const &,class google::protobuf::TextFormat::Printer::TextGenerator &)const " (?PrintAny@Printer@TextFormat@protobuf@google@@ABE_NABVMessage@34@AAVTextGenerator@1234@@z) 中被引用
7>libprotobuf.lib(text_format.obj) : error LNK2019: 无法解析的外部符号 "bool __cdecl google::protobuf::internal::GetAnyFieldDescriptors(class google::protobuf::Message const &,class google::protobuf::FieldDescriptor const * *,class google::protobuf::FieldDescriptor const * *)" (?GetAnyFieldDescriptors@internal@protobuf@google@@YA_NABVMessage@23@PAPBVFieldDescriptor@23@1@Z)，该符号在函数 "private: bool __thiscall google::protobuf::TextFormat::Parser::ParserImpl::ConsumeField(class google::protobuf::Message *)" (?ConsumeField@ParserImpl@Parser@TextFormat@protobuf@google@@AAE_NPAVMessage@45@@z) 中被引用
7>libprotobuf.lib(text_format.obj) : error LNK2001: 无法解析的外部符号 "char const * const google::protobuf::internal::kAnyFullTypeName" (?kAnyFullTypeName@internal@protobuf@google@@3QBDB)
7>libprotobuf.lib(text_format.obj) : error LNK2001: 无法解析的外部符号 "char const * const google::protobuf::internal::kTypeGoogleApisComPrefix" (?kTypeGoogleApisComPrefix@internal@protobuf@google@@3QBDB)
7>Debug\test_plugin.exe : fatal error LNK1120: 4 个无法解析的外部命令

May I know which OS and visual studio you are using?

I'm using window 8 and visula studio 2012.Is it any problem?

I get the same link errors on vs2013 with v3.0.0-alpha-3. couldn't find these functions:

ParseAnyTypeUrl GetAnyFieldDescriptors kAnyFullTypeName kTypeGoogleApisComPrefix

this was because the new file any.cc wasn't being compiled - I think it was fixed by commit 2e66304, but I didn't get a new copy because I'm getting the code as a git submodule and didn't see I had changes to the vs project files

Closing this issue assuming it's actually already fixed in the release. For those who have this issue, please try the version we put up in the releases page: https://github.com/google/protobuf/releases

I had said that I am using the last vesion.so ?

Can you be more specific on what version you are using? I.e., which commit? We could not reproduce the problem you are reporting with 3.0.0-alpha-3