diff --git a/cmake/opentelemetry-proto.cmake b/cmake/opentelemetry-proto.cmake
index 859f13b177..36f389301b 100644
--- a/cmake/opentelemetry-proto.cmake
+++ b/cmake/opentelemetry-proto.cmake
@@ -1,85 +1,4 @@
-macro(check_append_cxx_compiler_flag OUTPUT_VAR)
-  foreach(CHECK_FLAG ${ARGN})
-    check_cxx_compiler_flag(${CHECK_FLAG}
-                            "check_cxx_compiler_flag_${CHECK_FLAG}")
-    if(check_cxx_compiler_flag_${CHECK_FLAG})
-      list(APPEND ${OUTPUT_VAR} ${CHECK_FLAG})
-    endif()
-  endforeach()
-endmacro()
-
-if(NOT PATCH_PROTOBUF_SOURCES_OPTIONS_SET)
-  if(MSVC)
-    unset(PATCH_PROTOBUF_SOURCES_OPTIONS CACHE)
-    set(PATCH_PROTOBUF_SOURCES_OPTIONS /wd4244 /wd4251 /wd4267 /wd4309)
-
-    if(MSVC_VERSION GREATER_EQUAL 1922)
-      # see
-      # https://docs.microsoft.com/en-us/cpp/overview/cpp-conformance-improvements?view=vs-2019#improvements_162
-      # for detail
-      list(APPEND PATCH_PROTOBUF_SOURCES_OPTIONS /wd5054)
-    endif()
-
-    if(MSVC_VERSION GREATER_EQUAL 1925)
-      list(APPEND PATCH_PROTOBUF_SOURCES_OPTIONS /wd4996)
-    endif()
-
-    if(MSVC_VERSION LESS 1910)
-      list(APPEND PATCH_PROTOBUF_SOURCES_OPTIONS /wd4800)
-    endif()
-  else()
-    unset(PATCH_PROTOBUF_SOURCES_OPTIONS CACHE)
-    include(CheckCXXCompilerFlag)
-    check_append_cxx_compiler_flag(
-      PATCH_PROTOBUF_SOURCES_OPTIONS -Wno-type-limits
-      -Wno-deprecated-declarations -Wno-unused-parameter)
-  endif()
-  set(PATCH_PROTOBUF_SOURCES_OPTIONS_SET TRUE)
-  if(PATCH_PROTOBUF_SOURCES_OPTIONS)
-    set(PATCH_PROTOBUF_SOURCES_OPTIONS
-        ${PATCH_PROTOBUF_SOURCES_OPTIONS}
-        CACHE INTERNAL
-              "Options to disable warning of generated protobuf sources" FORCE)
-  endif()
-endif()
-
-function(patch_protobuf_sources)
-  if(PATCH_PROTOBUF_SOURCES_OPTIONS)
-    foreach(PROTO_SRC ${ARGN})
-      unset(PROTO_SRC_OPTIONS)
-      get_source_file_property(PROTO_SRC_OPTIONS ${PROTO_SRC} COMPILE_OPTIONS)
-      if(PROTO_SRC_OPTIONS)
-        list(APPEND PROTO_SRC_OPTIONS ${PATCH_PROTOBUF_SOURCES_OPTIONS})
-      else()
-        set(PROTO_SRC_OPTIONS ${PATCH_PROTOBUF_SOURCES_OPTIONS})
-      endif()
-
-      set_source_files_properties(
-        ${PROTO_SRC} PROPERTIES COMPILE_OPTIONS "${PROTO_SRC_OPTIONS}")
-    endforeach()
-    unset(PROTO_SRC)
-    unset(PROTO_SRC_OPTIONS)
-  endif()
-endfunction()
-
-function(patch_protobuf_targets)
-  if(PATCH_PROTOBUF_SOURCES_OPTIONS)
-    foreach(PROTO_TARGET ${ARGN})
-      unset(PROTO_TARGET_OPTIONS)
-      get_target_property(PROTO_TARGET_OPTIONS ${PROTO_TARGET} COMPILE_OPTIONS)
-      if(PROTO_TARGET_OPTIONS)
-        list(APPEND PROTO_TARGET_OPTIONS ${PATCH_PROTOBUF_SOURCES_OPTIONS})
-      else()
-        set(PROTO_TARGET_OPTIONS ${PATCH_PROTOBUF_SOURCES_OPTIONS})
-      endif()
-
-      set_target_properties(
-        ${PROTO_TARGET} PROPERTIES COMPILE_OPTIONS "${PROTO_TARGET_OPTIONS}")
-    endforeach()
-    unset(PROTO_TARGET)
-    unset(PROTO_TARGET_OPTIONS)
-  endif()
-endfunction()
+include(${PROJECT_SOURCE_DIR}/cmake/proto-options-patch.cmake)
 
 set(PROTO_PATH "${CMAKE_CURRENT_SOURCE_DIR}/third_party/opentelemetry-proto")
 
diff --git a/cmake/proto-options-patch.cmake b/cmake/proto-options-patch.cmake
new file mode 100644
index 0000000000..7ed9e5ad57
--- /dev/null
+++ b/cmake/proto-options-patch.cmake
@@ -0,0 +1,82 @@
+macro(check_append_cxx_compiler_flag OUTPUT_VAR)
+  foreach(CHECK_FLAG ${ARGN})
+    check_cxx_compiler_flag(${CHECK_FLAG}
+                            "check_cxx_compiler_flag_${CHECK_FLAG}")
+    if(check_cxx_compiler_flag_${CHECK_FLAG})
+      list(APPEND ${OUTPUT_VAR} ${CHECK_FLAG})
+    endif()
+  endforeach()
+endmacro()
+
+if(NOT PATCH_PROTOBUF_SOURCES_OPTIONS_SET)
+  if(MSVC)
+    unset(PATCH_PROTOBUF_SOURCES_OPTIONS CACHE)
+    set(PATCH_PROTOBUF_SOURCES_OPTIONS /wd4244 /wd4251 /wd4267 /wd4309)
+
+    if(MSVC_VERSION GREATER_EQUAL 1922)
+      # see
+      # https://docs.microsoft.com/en-us/cpp/overview/cpp-conformance-improvements?view=vs-2019#improvements_162
+      # for detail
+      list(APPEND PATCH_PROTOBUF_SOURCES_OPTIONS /wd5054)
+    endif()
+
+    if(MSVC_VERSION GREATER_EQUAL 1925)
+      list(APPEND PATCH_PROTOBUF_SOURCES_OPTIONS /wd4996)
+    endif()
+
+    if(MSVC_VERSION LESS 1910)
+      list(APPEND PATCH_PROTOBUF_SOURCES_OPTIONS /wd4800)
+    endif()
+  else()
+    unset(PATCH_PROTOBUF_SOURCES_OPTIONS CACHE)
+    include(CheckCXXCompilerFlag)
+    check_append_cxx_compiler_flag(
+      PATCH_PROTOBUF_SOURCES_OPTIONS -Wno-type-limits
+      -Wno-deprecated-declarations -Wno-unused-parameter)
+  endif()
+  set(PATCH_PROTOBUF_SOURCES_OPTIONS_SET TRUE)
+  if(PATCH_PROTOBUF_SOURCES_OPTIONS)
+    set(PATCH_PROTOBUF_SOURCES_OPTIONS
+        ${PATCH_PROTOBUF_SOURCES_OPTIONS}
+        CACHE INTERNAL
+              "Options to disable warning of generated protobuf sources" FORCE)
+  endif()
+endif()
+
+function(patch_protobuf_sources)
+  if(PATCH_PROTOBUF_SOURCES_OPTIONS)
+    foreach(PROTO_SRC ${ARGN})
+      unset(PROTO_SRC_OPTIONS)
+      get_source_file_property(PROTO_SRC_OPTIONS ${PROTO_SRC} COMPILE_OPTIONS)
+      if(PROTO_SRC_OPTIONS)
+        list(APPEND PROTO_SRC_OPTIONS ${PATCH_PROTOBUF_SOURCES_OPTIONS})
+      else()
+        set(PROTO_SRC_OPTIONS ${PATCH_PROTOBUF_SOURCES_OPTIONS})
+      endif()
+
+      set_source_files_properties(
+        ${PROTO_SRC} PROPERTIES COMPILE_OPTIONS "${PROTO_SRC_OPTIONS}")
+    endforeach()
+    unset(PROTO_SRC)
+    unset(PROTO_SRC_OPTIONS)
+  endif()
+endfunction()
+
+function(patch_protobuf_targets)
+  if(PATCH_PROTOBUF_SOURCES_OPTIONS)
+    foreach(PROTO_TARGET ${ARGN})
+      unset(PROTO_TARGET_OPTIONS)
+      get_target_property(PROTO_TARGET_OPTIONS ${PROTO_TARGET} COMPILE_OPTIONS)
+      if(PROTO_TARGET_OPTIONS)
+        list(APPEND PROTO_TARGET_OPTIONS ${PATCH_PROTOBUF_SOURCES_OPTIONS})
+      else()
+        set(PROTO_TARGET_OPTIONS ${PATCH_PROTOBUF_SOURCES_OPTIONS})
+      endif()
+
+      set_target_properties(
+        ${PROTO_TARGET} PROPERTIES COMPILE_OPTIONS "${PROTO_TARGET_OPTIONS}")
+    endforeach()
+    unset(PROTO_TARGET)
+    unset(PROTO_TARGET_OPTIONS)
+  endif()
+endfunction()
diff --git a/examples/grpc/CMakeLists.txt b/examples/grpc/CMakeLists.txt
index 2b43cf18f6..e5df847807 100644
--- a/examples/grpc/CMakeLists.txt
+++ b/examples/grpc/CMakeLists.txt
@@ -16,12 +16,13 @@ add_custom_command(
     ${PROTOBUF_PROTOC_EXECUTABLE} ARGS "--grpc_out=${CMAKE_CURRENT_BINARY_DIR}"
     "--cpp_out=${CMAKE_CURRENT_BINARY_DIR}" "--proto_path=${proto_file_path}"
     --plugin=protoc-gen-grpc="${gRPC_CPP_PLUGIN_EXECUTABLE}" "${proto_file}")
-# DEPENDS "${proto_file}")
 
-# hw_grpc_proto
 add_library(example_grpc_proto ${example_grpc_srcs} ${example_grpc_hdrs}
                                ${example_proto_srcs} ${example_proto_hdrs})
 
+include(${PROJECT_SOURCE_DIR}/cmake/proto-options-patch.cmake)
+patch_protobuf_targets(example_grpc_proto)
+
 include_directories(
   ${CMAKE_SOURCE_DIR}/exporters/ostream/include ${CMAKE_SOURCE_DIR}/ext/include
   ${CMAKE_SOURCE_DIR}/api/include/ ${CMAKE_SOURCE_DIR/})
@@ -45,4 +46,5 @@ foreach(_target client server)
     gRPC::grpc++_reflection
     opentelemetry_trace
     opentelemetry_exporter_ostream_span)
+  patch_protobuf_targets(${_target})
 endforeach()