Caffe build failure in MacOS

[momo1986]

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Issue summary

When I try to build "Caffe" in MacOS, the errors are reported for protobuf corresponding issues:
ls: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/: No such file or directory
PROTOC src/caffe/proto/caffe.proto
CXX .build_release/src/caffe/proto/caffe.pb.cc
In file included from .build_release/src/caffe/proto/caffe.pb.cc:4:
In file included from .build_release/src/caffe/proto/caffe.pb.h:23:
In file included from /usr/local/include/google/protobuf/io/coded_stream.h:135:
/usr/local/include/google/protobuf/stubs/common.h:190:17: error: expected expression
OnShutdownRun([](const void* pp) { delete static_cast<const T*>(pp); }, p);
^
In file included from .build_release/src/caffe/proto/caffe.pb.cc:4:
In file included from .build_release/src/caffe/proto/caffe.pb.h:26:
In file included from /usr/local/include/google/protobuf/generated_message_table_driven.h:34:
In file included from /usr/local/include/google/protobuf/map.h:49:
In file included from /usr/local/include/google/protobuf/map_type_handler.h:35:
In file included from /usr/local/include/google/protobuf/wire_format_lite_inl.h:45:
/usr/local/include/google/protobuf/message_lite.h:136:3: error: unknown type name 'constexpr'
constexpr const T& get() const { return reinterpret_cast<const T&>(union_); }
^
/usr/local/include/google/protobuf/message_lite.h:136:13: error: expected member name or ';' after declaration specifiers
constexpr const T& get() const { return reinterpret_cast<const T&>(union_); }

/usr/local/include/google/protobuf/message_lite.h:129:11: error: use of undeclared identifier 'union_'
  new (&union_) T();
        ^
/usr/local/include/google/protobuf/message_lite.h:133:5: error: use of undeclared identifier 'get_mutable'
  get_mutable()->~T();
  ^
/usr/local/include/google/protobuf/message_lite.h:150:45: error: found '<::' after a template name which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?
PROTOBUF_EXPORT extern ExplicitlyConstructed<::std::string>
                                          ^
/usr/local/include/google/protobuf/message_lite.h:155:37: error: no member named 'get' in 'google::protobuf::internal::ExplicitlyConstructed<std::__1::basic_string<char> >'
return fixed_address_empty_string.get();
       ~~~~~~~~~~~~~~~~~~~~~~~~~~ ^
/usr/local/include/google/protobuf/message_lite.h:513:3: error: unknown type name 'constexpr'
constexpr bool alias = flags & kMergeWithAliasing;
^
/usr/local/include/google/protobuf/message_lite.h:513:13: error: expected unqualified-id
constexpr bool alias = flags & kMergeWithAliasing;
          ^
/usr/local/include/google/protobuf/message_lite.h:514:41: error: use of undeclared identifier 'alias'
return internal::MergePartialFromImpl<alias>(input, this) &&
                                      ^
In file included from .build_release/src/caffe/proto/caffe.pb.cc:4:
In file included from .build_release/src/caffe/proto/caffe.pb.h:26:
In file included from /usr/local/include/google/protobuf/generated_message_table_driven.h:34:
In file included from /usr/local/include/google/protobuf/map.h:49:
In file included from /usr/local/include/google/protobuf/map_type_handler.h:35:
In file included from /usr/local/include/google/protobuf/wire_format_lite_inl.h:46:
/usr/local/include/google/protobuf/repeated_field.h:130:39: error: expected ';' at end of declaration list
RepeatedField(RepeatedField&& other) noexcept;
                                    ^
/usr/local/include/google/protobuf/repeated_field.h:131:50: error: expected ';' at end of declaration list
RepeatedField& operator=(RepeatedField&& other) noexcept;
                                               ^
/usr/local/include/google/protobuf/repeated_field.h:787:45: error: expected ';' at end of declaration list
RepeatedPtrField(RepeatedPtrField&& other) noexcept;
                                          ^
/usr/local/include/google/protobuf/repeated_field.h:788:56: error: expected ';' at end of declaration list
RepeatedPtrField& operator=(RepeatedPtrField&& other) noexcept;
                                                     ^
/usr/local/include/google/protobuf/repeated_field.h:1097:68: error: expected ';' at end of declaration
inline RepeatedField<Element>::RepeatedField(RepeatedField&& other) noexcept
                                                                 ^
/usr/local/include/google/protobuf/repeated_field.h:1097:69: error: unknown type name 'noexcept'
inline RepeatedField<Element>::RepeatedField(RepeatedField&& other) noexcept
                                                                  ^
/usr/local/include/google/protobuf/repeated_field.h:1098:5: error: expected unqualified-id
  : RepeatedField() {
  ^
/usr/local/include/google/protobuf/repeated_field.h:1110:27: error: expected ';' at end of declaration
  RepeatedField&& other) noexcept {
                        ^
/usr/local/include/google/protobuf/repeated_field.h:1110:28: error: C++ requires a type specifier for all declarations
  RepeatedField&& other) noexcept {
                         ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
make: *** [.build_release/src/caffe/proto/caffe.pb.o] Error 1

### Steps to reproduce
git clone https://github.com/BVLC/caffe
cd caffe
make all

### Tried solutions


### System configuration

* Operating system: 
* Compiler: 
* CUDA version (if applicable): 
* CUDNN version (if applicable): 
* BLAS: 
* Python version (if using pycaffe): 
* MATLAB version (if using matcaffe): 

### Issue checklist

- [ ] read the guidelines and removed the first paragraph
- [ ] written a short summary and detailed steps to reproduce
- [ ] explained how solutions to related problems failed (tick if found none)
- [ ] filled system configuration
- [ ] attached relevant logs/config files (tick if not applicable)

[petulla]

Has anyone found a solution to this issue? @momo1986

[ByuWang]

I meet the same issue, have you solved it ?

[TaoStarlit]

I have the same issue too, it seems like the version issue of the protobuf

[babaozhouy5]

If build with cmake, you can change CMakeLists.txt as follows:

if(UNIX OR APPLE)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC -Wall")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC -Wall -std=c++11")
endif()

or build with make, change Makefile as follows:

- CXXFLAGS += -pthread -fPIC $(COMMON_FLAGS) $(WARNINGS)
+ CXXFLAGS += -pthread -fPIC $(COMMON_FLAGS) $(WARNINGS) -std=c++11