Making the usage of gflags uniform across distributions.
diff --git a/test/cpp/interop/server.cc b/test/cpp/interop/server.cc
index 8566ad5..4869d4d 100644
--- a/test/cpp/interop/server.cc
+++ b/test/cpp/interop/server.cc
@@ -73,6 +73,13 @@
 using grpc::testing::TestService;
 using grpc::Status;
 
+// In some distros, gflags is in the namespace google, and in some others,
+// in gflags. This hack is enabling us to find both.
+namespace google { }
+namespace gflags { }
+using namespace google;
+using namespace gflags;
+
 bool SetPayload(PayloadType type, int size, Payload* payload) {
   PayloadType response_type = type;
   // TODO(yangg): Support UNCOMPRESSABLE payload.
@@ -217,7 +224,7 @@
 
 int main(int argc, char** argv) {
   grpc_init();
-  google::ParseCommandLineFlags(&argc, &argv, true);
+  ParseCommandLineFlags(&argc, &argv, true);
 
   GPR_ASSERT(FLAGS_port != 0);
   RunServer();