diff --git a/lib/cpp/src/Thrift.h b/lib/cpp/src/Thrift.h
index cb7d55a..a8bf2a8 100644
--- a/lib/cpp/src/Thrift.h
+++ b/lib/cpp/src/Thrift.h
@@ -36,6 +36,7 @@
 #include <set>
 #include <vector>
 #include <exception>
+#include <typeinfo>
 
 #include "TLogging.h"
 
@@ -134,6 +135,15 @@
   return new TExceptionWrapper<E>(e);
 }
 
+#if T_GLOBAL_DEBUG_VIRTUAL > 1
+void profile_virtual_call(const std::type_info& info);
+void profile_generic_protocol(const std::type_info& template_type,
+                              const std::type_info& prot_type);
+void profile_print_info(FILE *f);
+void profile_print_info();
+void profile_write_pprof(FILE* gen_calls_f, FILE* virtual_calls_f);
+#endif
+
 }} // apache::thrift
 
 #endif // #ifndef _THRIFT_THRIFT_H_