Merge pull request #675 from jtattermusch/ruby_gen_fix
Fix ruby generator build
diff --git a/src/compiler/ruby_generator_map-inl.h b/src/compiler/ruby_generator_map-inl.h
index 523f57b..a86342e 100644
--- a/src/compiler/ruby_generator_map-inl.h
+++ b/src/compiler/ruby_generator_map-inl.h
@@ -34,6 +34,7 @@
#ifndef NET_GRPC_COMPILER_RUBY_GENERATOR_MAP_INL_H_
#define NET_GRPC_COMPILER_RUBY_GENERATOR_MAP_INL_H_
+#include <iostream>
#include <initializer_list>
#include <map>
#include <ostream> // NOLINT