diff --git a/parser/CMakeLists.txt b/parser/CMakeLists.txt
index 4e3d018..83513d8 100644
--- a/parser/CMakeLists.txt
+++ b/parser/CMakeLists.txt
@@ -139,6 +139,7 @@ add_library(fmk_parser_stub SHARED
 
 target_compile_options(fmk_parser_stub PRIVATE
     -O2
+    -fno-common
 )
 
 target_compile_definitions(fmk_parser_stub PRIVATE
diff --git a/parser/func_to_graph/func2graph.py b/parser/func_to_graph/func2graph.py
index dcaaf3c..ef52916 100644
--- a/parser/func_to_graph/func2graph.py
+++ b/parser/func_to_graph/func2graph.py
@@ -1,5 +1,5 @@
 #!/usr/bin/python3
-# -*- coding: UTF-8 -*-
+# -*- coding: utf-8 -*-
 #-------------------------------------------------------------------
 # Purpose:
 # Copyright 2020 Huawei Technologies Co., Ltd. All rights reserved.
diff --git a/parser/onnx/CMakeLists.txt b/parser/onnx/CMakeLists.txt
index 65cabae..77cdcf1 100644
--- a/parser/onnx/CMakeLists.txt
+++ b/parser/onnx/CMakeLists.txt
@@ -104,6 +104,7 @@ add_library(fmk_onnx_parser_stub SHARED
 
 target_compile_options(fmk_onnx_parser_stub PRIVATE
     -O2
+    -fno-common
 )
 
 target_compile_definitions(fmk_onnx_parser_stub PRIVATE
diff --git a/parser/stub/gen_stubapi.py b/parser/stub/gen_stubapi.py
index 94db770..9319f3f 100644
--- a/parser/stub/gen_stubapi.py
+++ b/parser/stub/gen_stubapi.py
@@ -1,5 +1,5 @@
 #!/usr/bin/python3
-# -*- coding: UTF-8 -*-
+# -*- coding: utf-8 -*-
 #-------------------------------------------------------------------
 # Purpose:
 # Copyright 2020 Huawei Technologies Co., Ltd. All rights reserved.