add missing dll export macros for msvc.

src/google/protobuf/compiler/java/java_doc_comment.h

@@ -59,7 +59,7 @@ void WriteMethodDocComment(io::Printer* printer,
                            const MethodDescriptor* method);
 
 // Exposed for testing only.
-string EscapeJavadoc(const string& input);
+LIBPROTOC_EXPORT string EscapeJavadoc(const string& input);
 
 }  // namespace java
 }  // namespace compiler

src/google/protobuf/compiler/subprocess.h

@@ -53,7 +53,7 @@ class Message;
 namespace compiler {
 
 // Utility class for launching sub-processes.
-class Subprocess {
+class LIBPROTOC_EXPORT Subprocess {
  public:
   Subprocess();
   ~Subprocess();

src/google/protobuf/message.cc

@@ -188,7 +188,7 @@ bool Message::SerializePartialToOstream(ostream* output) const {
 Reflection::~Reflection() {}
 
 #define HANDLE_TYPE(TYPE, CPPTYPE, CTYPE)                             \
-template<>                                                            \
+template<> LIBPROTOBUF_EXPORT                                         \
 const RepeatedField<TYPE>& Reflection::GetRepeatedField<TYPE>(        \
     const Message& message, const FieldDescriptor* field) const {     \
   return *static_cast<RepeatedField<TYPE>* >(                         \
@@ -196,7 +196,7 @@ const RepeatedField<TYPE>& Reflection::GetRepeatedField<TYPE>(        \
                           field, CPPTYPE, CTYPE, NULL));              \
 }                                                                     \
                                                                       \
-template<>                                                            \
+template<> LIBPROTOBUF_EXPORT                                         \
 RepeatedField<TYPE>* Reflection::MutableRepeatedField<TYPE>(          \
     Message* message, const FieldDescriptor* field) const {           \
   return static_cast<RepeatedField<TYPE>* >(                          \

src/google/protobuf/stubs/once.h

@@ -118,6 +118,7 @@ typedef internal::AtomicWord ProtobufOnceType;
 
 #define GOOGLE_PROTOBUF_ONCE_INIT ::google::protobuf::ONCE_STATE_UNINITIALIZED
 
+LIBPROTOBUF_EXPORT
 void GoogleOnceInitImpl(ProtobufOnceType* once, Closure* closure);
 
 inline void GoogleOnceInit(ProtobufOnceType* once, void (*init_func)()) {

src/google/protobuf/stubs/stringprintf.h

@@ -50,25 +50,25 @@ namespace google {
 namespace protobuf {
 
 // Return a C++ string
-extern string StringPrintf(const char* format, ...);
+LIBPROTOBUF_EXPORT extern string StringPrintf(const char* format, ...);
 
 // Store result into a supplied string and return it
-extern const string& SStringPrintf(string* dst, const char* format, ...);
+LIBPROTOBUF_EXPORT extern const string& SStringPrintf(string* dst, const char* format, ...);
 
 // Append result to a supplied string
-extern void StringAppendF(string* dst, const char* format, ...);
+LIBPROTOBUF_EXPORT extern void StringAppendF(string* dst, const char* format, ...);
 
 // Lower-level routine that takes a va_list and appends to a specified
 // string.  All other routines are just convenience wrappers around it.
-extern void StringAppendV(string* dst, const char* format, va_list ap);
+LIBPROTOBUF_EXPORT extern void StringAppendV(string* dst, const char* format, va_list ap);
 
 // The max arguments supported by StringPrintfVector
-extern const int kStringPrintfVectorMaxArgs;
+LIBPROTOBUF_EXPORT extern const int kStringPrintfVectorMaxArgs;
 
 // You can use this version when all your arguments are strings, but
 // you don't know how many arguments you'll have at compile time.
 // StringPrintfVector will LOG(FATAL) if v.size() > kStringPrintfVectorMaxArgs
-extern string StringPrintfVector(const char* format, const vector<string>& v);
+LIBPROTOBUF_EXPORT extern string StringPrintfVector(const char* format, const vector<string>& v);
 
 }  // namespace protobuf
 }  // namespace google