Protobuf compatibility...

[jiapei100]

Descripe the feature and motivation

My ENV:

• Ubuntu 22.04
• gcc: (Ubuntu 11.3.0-1ubuntu1~22.04) 11.3.0
• Protobuf: 3.20.3
• OpenCV 4.6.0 (building)

Failed to build OpenCV dnn caffe with this version of Protobuf:

/usr/local/include/google/protobuf/arenastring.h:318:8: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::ClearToEmpty()’
  318 |   void ClearToEmpty();
      |        ^~~~~~~~~~~~
/usr/local/include/google/protobuf/arenastring.h:318:8: note:   candidate expects 0 arguments, 2 provided
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
....../opencv/build/modules/dnn/opencv-caffe.pb.h: In member function ‘void opencv_caffe::PythonParameter::_internal_set_layer(const string&)’:
....../opencv/build/modules/dnn/opencv-caffe.pb.h:36145:13: error: no matching function for call to ‘google::protobuf::internal::ArenaStringPtr::Set(const string*, const string&, google::protobuf::Arena*)’
36145 |   layer_.Set(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited(), value, GetArena());
      |   ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.h:25,
                 from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
/usr/local/include/google/protobuf/arenastring.h:266:8: note: candidate: ‘template<class RefWrappedType> void google::protobuf::internal::ArenaStringPtr::Set(std::reference_wrapper<_Tp>, google::protobuf::Arena*)’
  266 |   void Set(std::reference_wrapper<RefWrappedType> const_string_ref,
      |        ^~~
/usr/local/include/google/protobuf/arenastring.h:266:8: note:   template argument deduction/substitution failed:
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
....../opencv/build/modules/dnn/opencv-caffe.pb.h:36145:13: note:   mismatched types ‘std::reference_wrapper<_Tp>’ and ‘const string*’ {aka ‘const std::__cxx11::basic_string<char>*’}
36145 |   layer_.Set(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited(), value, GetArena());
      |   ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.h:25,
                 from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
/usr/local/include/google/protobuf/arenastring.h:255:8: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(google::protobuf::ConstStringParam, google::protobuf::Arena*)’
  255 |   void Set(ConstStringParam value, Arena* arena);
      |        ^~~
/usr/local/include/google/protobuf/arenastring.h:255:8: note:   candidate expects 2 arguments, 3 provided
/usr/local/include/google/protobuf/arenastring.h:256:8: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(std::string&&, google::protobuf::Arena*)’
  256 |   void Set(std::string&& value, Arena* arena);
      |        ^~~
/usr/local/include/google/protobuf/arenastring.h:256:8: note:   candidate expects 2 arguments, 3 provided
/usr/local/include/google/protobuf/arenastring.h:401:13: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(const char*, google::protobuf::Arena*)’
  401 | inline void ArenaStringPtr::Set(const char* s, Arena* arena) {
      |             ^~~~~~~~~~~~~~
/usr/local/include/google/protobuf/arenastring.h:401:13: note:   candidate expects 2 arguments, 3 provided
/usr/local/include/google/protobuf/arenastring.h:405:13: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(const char*, size_t, google::protobuf::Arena*)’
  405 | inline void ArenaStringPtr::Set(const char* s, size_t n, Arena* arena) {
      |             ^~~~~~~~~~~~~~
/usr/local/include/google/protobuf/arenastring.h:405:45: note:   no known conversion for argument 1 from ‘const string*’ {aka ‘const std::__cxx11::basic_string<char>*’} to ‘const char*’
  405 | inline void ArenaStringPtr::Set(const char* s, size_t n, Arena* arena) {
      |                                 ~~~~~~~~~~~~^
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
....../opencv/build/modules/dnn/opencv-caffe.pb.h: In member function ‘void opencv_caffe::PythonParameter::set_layer(std::string&&)’:
....../opencv/build/modules/dnn/opencv-caffe.pb.h:36149:13: error: no matching function for call to ‘google::protobuf::internal::ArenaStringPtr::Set(const string*, std::remove_reference<std::__cxx11::basic_string<char>&>::type, google::protobuf::Arena*)’
36149 |   layer_.Set(
      |   ~~~~~~~~~~^
36150 |     &::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited(), ::std::move(value), GetArena());
      |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.h:25,
                 from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
/usr/local/include/google/protobuf/arenastring.h:266:8: note: candidate: ‘template<class RefWrappedType> void google::protobuf::internal::ArenaStringPtr::Set(std::reference_wrapper<_Tp>, google::protobuf::Arena*)’
  266 |   void Set(std::reference_wrapper<RefWrappedType> const_string_ref,
      |        ^~~
/usr/local/include/google/protobuf/arenastring.h:266:8: note:   template argument deduction/substitution failed:
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
....../opencv/build/modules/dnn/opencv-caffe.pb.h:36149:13: note:   mismatched types ‘std::reference_wrapper<_Tp>’ and ‘const string*’ {aka ‘const std::__cxx11::basic_string<char>*’}
36149 |   layer_.Set(
      |   ~~~~~~~~~~^
36150 |     &::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited(), ::std::move(value), GetArena());
      |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.h:25,
                 from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
/usr/local/include/google/protobuf/arenastring.h:255:8: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(google::protobuf::ConstStringParam, google::protobuf::Arena*)’
  255 |   void Set(ConstStringParam value, Arena* arena);
      |        ^~~
/usr/local/include/google/protobuf/arenastring.h:255:8: note:   candidate expects 2 arguments, 3 provided
/usr/local/include/google/protobuf/arenastring.h:256:8: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(std::string&&, google::protobuf::Arena*)’
  256 |   void Set(std::string&& value, Arena* arena);
      |        ^~~
/usr/local/include/google/protobuf/arenastring.h:256:8: note:   candidate expects 2 arguments, 3 provided
/usr/local/include/google/protobuf/arenastring.h:401:13: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(const char*, google::protobuf::Arena*)’
  401 | inline void ArenaStringPtr::Set(const char* s, Arena* arena) {
      |             ^~~~~~~~~~~~~~
/usr/local/include/google/protobuf/arenastring.h:401:13: note:   candidate expects 2 arguments, 3 provided
/usr/local/include/google/protobuf/arenastring.h:405:13: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(const char*, size_t, google::protobuf::Arena*)’
  405 | inline void ArenaStringPtr::Set(const char* s, size_t n, Arena* arena) {
      |             ^~~~~~~~~~~~~~
/usr/local/include/google/protobuf/arenastring.h:405:45: note:   no known conversion for argument 1 from ‘const string*’ {aka ‘const std::__cxx11::basic_string<char>*’} to ‘const char*’
  405 | inline void ArenaStringPtr::Set(const char* s, size_t n, Arena* arena) {
      |                                 ~~~~~~~~~~~~^
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
....../opencv/build/modules/dnn/opencv-caffe.pb.h: In member function ‘void opencv_caffe::PythonParameter::set_layer(const char*)’:
....../opencv/build/modules/dnn/opencv-caffe.pb.h:36156:13: error: no matching function for call to ‘google::protobuf::internal::ArenaStringPtr::Set(const string*, std::string, google::protobuf::Arena*)’
36156 |   layer_.Set(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited(), ::std::string(value),
      |   ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
36157 |               GetArena());
      |               ~~~~~~~~~~~
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.h:25,
                 from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
/usr/local/include/google/protobuf/arenastring.h:266:8: note: candidate: ‘template<class RefWrappedType> void google::protobuf::internal::ArenaStringPtr::Set(std::reference_wrapper<_Tp>, google::protobuf::Arena*)’
  266 |   void Set(std::reference_wrapper<RefWrappedType> const_string_ref,
      |        ^~~
/usr/local/include/google/protobuf/arenastring.h:266:8: note:   template argument deduction/substitution failed:
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
....../opencv/build/modules/dnn/opencv-caffe.pb.h:36156:13: note:   mismatched types ‘std::reference_wrapper<_Tp>’ and ‘const string*’ {aka ‘const std::__cxx11::basic_string<char>*’}
36156 |   layer_.Set(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited(), ::std::string(value),
      |   ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
36157 |               GetArena());
      |               ~~~~~~~~~~~
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.h:25,
                 from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
/usr/local/include/google/protobuf/arenastring.h:255:8: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(google::protobuf::ConstStringParam, google::protobuf::Arena*)’
  255 |   void Set(ConstStringParam value, Arena* arena);
      |        ^~~
/usr/local/include/google/protobuf/arenastring.h:255:8: note:   candidate expects 2 arguments, 3 provided
/usr/local/include/google/protobuf/arenastring.h:256:8: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(std::string&&, google::protobuf::Arena*)’
  256 |   void Set(std::string&& value, Arena* arena);
      |        ^~~
/usr/local/include/google/protobuf/arenastring.h:256:8: note:   candidate expects 2 arguments, 3 provided
/usr/local/include/google/protobuf/arenastring.h:401:13: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(const char*, google::protobuf::Arena*)’
  401 | inline void ArenaStringPtr::Set(const char* s, Arena* arena) {
      |             ^~~~~~~~~~~~~~
/usr/local/include/google/protobuf/arenastring.h:401:13: note:   candidate expects 2 arguments, 3 provided
/usr/local/include/google/protobuf/arenastring.h:405:13: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(const char*, size_t, google::protobuf::Arena*)’
  405 | inline void ArenaStringPtr::Set(const char* s, size_t n, Arena* arena) {
      |             ^~~~~~~~~~~~~~
/usr/local/include/google/protobuf/arenastring.h:405:45: note:   no known conversion for argument 1 from ‘const string*’ {aka ‘const std::__cxx11::basic_string<char>*’} to ‘const char*’
  405 | inline void ArenaStringPtr::Set(const char* s, size_t n, Arena* arena) {
      |                                 ~~~~~~~~~~~~^
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
....../opencv/build/modules/dnn/opencv-caffe.pb.h: In member function ‘void opencv_caffe::PythonParameter::set_layer(const char*, size_t)’:
....../opencv/build/modules/dnn/opencv-caffe.pb.h:36163:13: error: no matching function for call to ‘google::protobuf::internal::ArenaStringPtr::Set(const string*, std::string, google::protobuf::Arena*)’
36163 |   layer_.Set(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited(), ::std::string(
      |   ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
36164 |       reinterpret_cast<const char*>(value), size), GetArena());
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.h:25,
                 from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
/usr/local/include/google/protobuf/arenastring.h:266:8: note: candidate: ‘template<class RefWrappedType> void google::protobuf::internal::ArenaStringPtr::Set(std::reference_wrapper<_Tp>, google::protobuf::Arena*)’
  266 |   void Set(std::reference_wrapper<RefWrappedType> const_string_ref,
      |        ^~~
/usr/local/include/google/protobuf/arenastring.h:266:8: note:   template argument deduction/substitution failed:
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
....../opencv/build/modules/dnn/opencv-caffe.pb.h:36163:13: note:   mismatched types ‘std::reference_wrapper<_Tp>’ and ‘const string*’ {aka ‘const std::__cxx11::basic_string<char>*’}
36163 |   layer_.Set(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited(), ::std::string(
      |   ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
36164 |       reinterpret_cast<const char*>(value), size), GetArena());
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.h:25,
                 from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
/usr/local/include/google/protobuf/arenastring.h:255:8: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(google::protobuf::ConstStringParam, google::protobuf::Arena*)’
  255 |   void Set(ConstStringParam value, Arena* arena);
      |        ^~~
/usr/local/include/google/protobuf/arenastring.h:255:8: note:   candidate expects 2 arguments, 3 provided
/usr/local/include/google/protobuf/arenastring.h:256:8: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(std::string&&, google::protobuf::Arena*)’
  256 |   void Set(std::string&& value, Arena* arena);
      |        ^~~
/usr/local/include/google/protobuf/arenastring.h:256:8: note:   candidate expects 2 arguments, 3 provided
/usr/local/include/google/protobuf/arenastring.h:401:13: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(const char*, google::protobuf::Arena*)’
  401 | inline void ArenaStringPtr::Set(const char* s, Arena* arena) {
      |             ^~~~~~~~~~~~~~
/usr/local/include/google/protobuf/arenastring.h:401:13: note:   candidate expects 2 arguments, 3 provided
/usr/local/include/google/protobuf/arenastring.h:405:13: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::Set(const char*, size_t, google::protobuf::Arena*)’
  405 | inline void ArenaStringPtr::Set(const char* s, size_t n, Arena* arena) {
      |             ^~~~~~~~~~~~~~
/usr/local/include/google/protobuf/arenastring.h:405:45: note:   no known conversion for argument 1 from ‘const string*’ {aka ‘const std::__cxx11::basic_string<char>*’} to ‘const char*’
  405 | inline void ArenaStringPtr::Set(const char* s, size_t n, Arena* arena) {
      |                                 ~~~~~~~~~~~~^
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
....../opencv/build/modules/dnn/opencv-caffe.pb.h: In member function ‘std::string* opencv_caffe::PythonParameter::_internal_mutable_layer()’:
....../opencv/build/modules/dnn/opencv-caffe.pb.h:36169:24: error: no matching function for call to ‘google::protobuf::internal::ArenaStringPtr::Mutable(const string*, google::protobuf::Arena*)’
36169 |   return layer_.Mutable(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited(), GetArena());
      |          ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.h:25,
                 from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
/usr/local/include/google/protobuf/arenastring.h:275:16: note: candidate: ‘std::string* google::protobuf::internal::ArenaStringPtr::Mutable(google::protobuf::Arena*)’
  275 |   std::string* Mutable(Arena* arena);
      |                ^~~~~~~
/usr/local/include/google/protobuf/arenastring.h:275:16: note:   candidate expects 1 argument, 2 provided
/usr/local/include/google/protobuf/arenastring.h:276:16: note: candidate: ‘std::string* google::protobuf::internal::ArenaStringPtr::Mutable(const google::protobuf::internal::LazyString&, google::protobuf::Arena*)’
  276 |   std::string* Mutable(const LazyString& default_value, Arena* arena);
      |                ^~~~~~~
/usr/local/include/google/protobuf/arenastring.h:276:42: note:   no known conversion for argument 1 from ‘const string*’ {aka ‘const std::__cxx11::basic_string<char>*’} to ‘const google::protobuf::internal::LazyString&’
  276 |   std::string* Mutable(const LazyString& default_value, Arena* arena);
      |                        ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
....../opencv/build/modules/dnn/opencv-caffe.pb.h: In member function ‘std::string* opencv_caffe::PythonParameter::release_layer()’:
....../opencv/build/modules/dnn/opencv-caffe.pb.h:36177:17: error: ‘struct google::protobuf::internal::ArenaStringPtr’ has no member named ‘ReleaseNonDefault’; did you mean ‘ClearToDefault’?
36177 |   return layer_.ReleaseNonDefault(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited(), GetArena());
      |                 ^~~~~~~~~~~~~~~~~
      |                 ClearToDefault
....../opencv/build/modules/dnn/opencv-caffe.pb.h: In member function ‘void opencv_caffe::PythonParameter::set_allocated_layer(std::string*)’:
....../opencv/build/modules/dnn/opencv-caffe.pb.h:36185:22: error: no matching function for call to ‘google::protobuf::internal::ArenaStringPtr::SetAllocated(const string*, std::string*&, google::protobuf::Arena*)’
36185 |   layer_.SetAllocated(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited(), layer,
      |   ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
36186 |       GetArena());
      |       ~~~~~~~~~~~     
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.h:25,
                 from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
/usr/local/include/google/protobuf/arenastring.h:309:8: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::SetAllocated(std::string*, google::protobuf::Arena*)’
  309 |   void SetAllocated(std::string* value, Arena* arena);
      |        ^~~~~~~~~~~~
/usr/local/include/google/protobuf/arenastring.h:309:8: note:   candidate expects 2 arguments, 3 provided
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
....../opencv/build/modules/dnn/opencv-caffe.pb.h: In member function ‘void opencv_caffe::PythonParameter::clear_param_str()’:
....../opencv/build/modules/dnn/opencv-caffe.pb.h:36199:26: error: no matching function for call to ‘google::protobuf::internal::ArenaStringPtr::ClearToEmpty(const string*, google::protobuf::Arena*)’
36199 |   param_str_.ClearToEmpty(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited(), GetArena());
      |   ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.h:25,
                 from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
/usr/local/include/google/protobuf/arenastring.h:318:8: note: candidate: ‘void google::protobuf::internal::ArenaStringPtr::ClearToEmpty()’
  318 |   void ClearToEmpty();
      |        ^~~~~~~~~~~~
/usr/local/include/google/protobuf/arenastring.h:318:8: note:   candidate expects 0 arguments, 2 provided
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
....../opencv/build/modules/dnn/opencv-caffe.pb.h: In member function ‘void opencv_caffe::PythonParameter::_internal_set_param_str(const string&)’:
....../opencv/build/modules/dnn/opencv-caffe.pb.h:36219:17: error: no matching function for call to ‘google::protobuf::internal::ArenaStringPtr::Set(const string*, const string&, google::protobuf::Arena*)’
36219 |   param_str_.Set(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited(), value, GetArena());
      |   ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.h:25,
                 from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
/usr/local/include/google/protobuf/arenastring.h:266:8: note: candidate: ‘template<class RefWrappedType> void google::protobuf::internal::ArenaStringPtr::Set(std::reference_wrapper<_Tp>, google::protobuf::Arena*)’
  266 |   void Set(std::reference_wrapper<RefWrappedType> const_string_ref,
      |        ^~~
/usr/local/include/google/protobuf/arenastring.h:266:8: note:   template argument deduction/substitution failed:
In file included from ....../opencv/build/modules/dnn/opencv-caffe.pb.cc:4:
....../opencv/build/modules/dnn/opencv-caffe.pb.h:36219:17: note:   mismatched types ‘std::reference_wrapper<_Tp>’ and ‘const string*’ {aka ‘const std::__cxx11::basic_string<char>*’}
36219 |   param_str_.Set(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited(), value, GetArena());
      |   ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Did anybody meet the same issue?

Additional context

No response

[fengyuentau]

Have a try with this solution: #22674 (comment)

---

Build & installation questions should go to https://forum.opencv.org/ by the way.