diff --git a/Makefile b/Makefile
index 7c5c6c776ffa5..c6b74e596bdfd 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,7 @@
 GENERATED_DIR=$(shell pwd)/generated_python
-FINAL_DIR=gcloud/bigtable/_generated
+FINAL_DIR=$(shell pwd)/gcloud/bigtable/_generated
 GRPC_PLUGIN=grpc_python_plugin
+PROTOC_CMD=protoc
 
 help:
 	@echo 'Makefile for gcloud-python Bigtable protos                      '
@@ -15,56 +16,99 @@ generate:
 	mkdir -p $(GENERATED_DIR)
 	# Data API
 	cd cloud-bigtable-client/bigtable-protos/src/main/proto && \
-	    protoc --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
-	    --plugin=protoc-gen-grpc=$(GRPC_PLUGIN) google/bigtable/v1/*.proto
+	    $(PROTOC_CMD) --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
+	    --plugin=protoc-gen-grpc=$(GRPC_PLUGIN) google/bigtable/v1/*.proto && \
+	    cp google/bigtable/v1/bigtable_data.proto \
+	    $(FINAL_DIR)/_bigtable_data.proto && \
+	    cp google/bigtable/v1/bigtable_service.proto \
+	    $(FINAL_DIR)/_bigtable_service.proto && \
+	    cp google/bigtable/v1/bigtable_service_messages.proto \
+	    $(FINAL_DIR)/_bigtable_service_messages.proto && \
+	    chmod -x $(FINAL_DIR)/_bigtable_data.proto && \
+	    chmod -x $(FINAL_DIR)/_bigtable_service.proto && \
+	    chmod -x $(FINAL_DIR)/_bigtable_service_messages.proto
 	mv $(GENERATED_DIR)/google/bigtable/v1/* $(FINAL_DIR)
 	# Cluster API
 	cd cloud-bigtable-client/bigtable-protos/src/main/proto && \
-	    protoc --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
+	    $(PROTOC_CMD) --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
 	    --plugin=protoc-gen-grpc=$(GRPC_PLUGIN) \
-	    google/bigtable/admin/cluster/v1/*.proto
+	    google/bigtable/admin/cluster/v1/*.proto && \
+	    cp google/bigtable/admin/cluster/v1/bigtable_cluster_data.proto \
+	    $(FINAL_DIR)/_bigtable_cluster_data.proto && \
+	    cp google/bigtable/admin/cluster/v1/bigtable_cluster_service.proto \
+	    $(FINAL_DIR)/_bigtable_cluster_service.proto && \
+	    cp google/bigtable/admin/cluster/v1/bigtable_cluster_service_messages.proto \
+	    $(FINAL_DIR)/_bigtable_cluster_service_messages.proto && \
+	    chmod -x $(FINAL_DIR)/_bigtable_cluster_data.proto && \
+	    chmod -x $(FINAL_DIR)/_bigtable_cluster_service.proto && \
+	    chmod -x $(FINAL_DIR)/_bigtable_cluster_service_messages.proto
 	mv $(GENERATED_DIR)/google/bigtable/admin/cluster/v1/* $(FINAL_DIR)
 	# Table API
 	cd cloud-bigtable-client/bigtable-protos/src/main/proto && \
-	    protoc --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
+	    $(PROTOC_CMD) --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
 	    --plugin=protoc-gen-grpc=$(GRPC_PLUGIN) \
-	    google/bigtable/admin/table/v1/*.proto
+	    google/bigtable/admin/table/v1/*.proto && \
+	    cp google/bigtable/admin/table/v1/bigtable_table_data.proto \
+	    $(FINAL_DIR)/_bigtable_table_data.proto && \
+	    cp google/bigtable/admin/table/v1/bigtable_table_service.proto \
+	    $(FINAL_DIR)/_bigtable_table_service.proto && \
+	    cp google/bigtable/admin/table/v1/bigtable_table_service_messages.proto \
+	    $(FINAL_DIR)/_bigtable_table_service_messages.proto && \
+	    chmod -x $(FINAL_DIR)/_bigtable_table_data.proto && \
+	    chmod -x $(FINAL_DIR)/_bigtable_table_service.proto && \
+	    chmod -x $(FINAL_DIR)/_bigtable_table_service_messages.proto
 	mv $(GENERATED_DIR)/google/bigtable/admin/table/v1/* $(FINAL_DIR)
 	# Auxiliary protos
 	cd cloud-bigtable-client/bigtable-protos/src/main/proto && \
-	    protoc --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
+	    $(PROTOC_CMD) --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
 	    --plugin=protoc-gen-grpc=$(GRPC_PLUGIN) \
-	    google/api/*.proto
+	    google/api/*.proto && \
+	    cp google/api/annotations.proto $(FINAL_DIR)/_annotations.proto && \
+	    cp google/api/http.proto $(FINAL_DIR)/_http.proto && \
+	    chmod -x $(FINAL_DIR)/_annotations.proto && \
+	    chmod -x $(FINAL_DIR)/_http.proto
 	mv $(GENERATED_DIR)/google/api/* $(FINAL_DIR)
 	cd cloud-bigtable-client/bigtable-protos/src/main/proto && \
-	    protoc --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
+	    $(PROTOC_CMD) --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
 	    --plugin=protoc-gen-grpc=$(GRPC_PLUGIN) \
-	    google/protobuf/any.proto
+	    google/protobuf/any.proto && \
+	    cp google/protobuf/any.proto $(FINAL_DIR)/_any.proto && \
+	    chmod -x $(FINAL_DIR)/_any.proto
 	mv $(GENERATED_DIR)/google/protobuf/any_pb2.py $(FINAL_DIR)
 	cd cloud-bigtable-client/bigtable-protos/src/main/proto && \
-	    protoc --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
+	    $(PROTOC_CMD) --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
 	    --plugin=protoc-gen-grpc=$(GRPC_PLUGIN) \
-	    google/protobuf/duration.proto
+	    google/protobuf/duration.proto && \
+	    cp google/protobuf/duration.proto $(FINAL_DIR)/_duration.proto && \
+	    chmod -x $(FINAL_DIR)/_duration.proto
 	mv $(GENERATED_DIR)/google/protobuf/duration_pb2.py $(FINAL_DIR)
 	cd cloud-bigtable-client/bigtable-protos/src/main/proto && \
-	    protoc --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
+	    $(PROTOC_CMD) --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
 	    --plugin=protoc-gen-grpc=$(GRPC_PLUGIN) \
-	    google/protobuf/empty.proto
+	    google/protobuf/empty.proto && \
+	    cp google/protobuf/empty.proto $(FINAL_DIR)/_empty.proto && \
+	    chmod -x $(FINAL_DIR)/_empty.proto
 	mv $(GENERATED_DIR)/google/protobuf/empty_pb2.py $(FINAL_DIR)
 	cd cloud-bigtable-client/bigtable-protos/src/main/proto && \
-	    protoc --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
+	    $(PROTOC_CMD) --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
 	    --plugin=protoc-gen-grpc=$(GRPC_PLUGIN) \
-	    google/protobuf/timestamp.proto
+	    google/protobuf/timestamp.proto && \
+	    cp google/protobuf/timestamp.proto $(FINAL_DIR)/_timestamp.proto && \
+	    chmod -x $(FINAL_DIR)/_timestamp.proto
 	mv $(GENERATED_DIR)/google/protobuf/timestamp_pb2.py $(FINAL_DIR)
 	cd cloud-bigtable-client/bigtable-protos/src/main/proto && \
-	    protoc --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
+	    $(PROTOC_CMD) --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
 	    --plugin=protoc-gen-grpc=$(GRPC_PLUGIN) \
-	    google/longrunning/operations.proto
+	    google/longrunning/operations.proto && \
+	    cp google/longrunning/operations.proto $(FINAL_DIR)/_operations.proto && \
+	    chmod -x $(FINAL_DIR)/_operations.proto
 	mv $(GENERATED_DIR)/google/longrunning/operations_pb2.py $(FINAL_DIR)
 	cd cloud-bigtable-client/bigtable-protos/src/main/proto && \
-	    protoc --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
+	    $(PROTOC_CMD) --python_out=$(GENERATED_DIR) --grpc_out=$(GENERATED_DIR) \
 	    --plugin=protoc-gen-grpc=$(GRPC_PLUGIN) \
-	    google/rpc/status.proto
+	    google/rpc/status.proto && \
+	    cp google/rpc/status.proto $(FINAL_DIR)/_status.proto && \
+	    chmod -x $(FINAL_DIR)/_status.proto
 	mv $(GENERATED_DIR)/google/rpc/status_pb2.py $(FINAL_DIR)
 	python scripts/rewrite_imports.py