diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..7796597
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,4 @@
+---
+BasedOnStyle: LLVM
+Language: Cpp
+CommentPragmas: "(NOLINT|^ IWYU pragma:)"
diff --git a/development/cli/style_check/clang_format.bash b/development/cli/style_check/clang_format.bash
index 2858e9c..4e5a4f2 100755
--- a/development/cli/style_check/clang_format.bash
+++ b/development/cli/style_check/clang_format.bash
@@ -15,4 +15,7 @@ clang_format_targets="$(
         xargs -I{} echo "$(pwd)/{}"
 )"
 
-"${BAZEL_EXECUTABLE[@]}" run -- @clang_tools//:clang_format -i ${clang_format_targets}
+"${BAZEL_EXECUTABLE[@]}" run -- @clang_tools//:clang_format \
+    -style=file \
+    --assume-filename="${REPO_ROOT_DIR}/.clang-format" \
+    -i ${clang_format_targets}
diff --git a/libc_replacer/cc/internal/definition_helper.h b/libc_replacer/cc/internal/definition_helper.h
index f60d47b..492cdb6 100644
--- a/libc_replacer/cc/internal/definition_helper.h
+++ b/libc_replacer/cc/internal/definition_helper.h
@@ -4,10 +4,8 @@
 #include "libc_replacer/cc/internal/macro_impl.h"
 #include <stdatomic.h>
 
-/// @note Suppress clang-tidy warnings occuring inside macros.
-#define LIBC_REPLACER_INTERNAL_NOLINTBEGIN
-/// @note Suppress clang-tidy warnings occuring inside macros.
-#define LIBC_REPLACER_INTERNAL_NOLINTEND
+/// @brief Macro for annotation.
+#define LIBC_REPLACER_INTERNAL_ANNOTATE()
 
 /// @brief Define replacer functions of a libc API.
 /// @param library Name of the libc API to replace.
@@ -15,27 +13,27 @@
 /// @param ... Argument value types of the libc API.
 /// @note Disable `cppcoreguidelines-avoid-non-const-global-variables` for
 /// defining a global atomic function pointer.
-#define LIBC_REPLACER_INTERNAL_DEFINE(library, ret_t, ...)                     \
-  LIBC_REPLACER_INTERNAL_NOLINTBEGIN                                           \
-  ret_t __real_##library(                                                      \
-      LIBC_REPLACER_INTERNAL_GET_ARG_TYPES_AND_NAMES(__VA_ARGS__));            \
-  ret_t __wrap_##library(                                                      \
-      LIBC_REPLACER_INTERNAL_GET_ARG_TYPES_AND_NAMES(__VA_ARGS__));            \
-  static _Atomic(libc_replacer_##library##_func_ptr_t)                         \
-      libc_replacer_func_global = __real_##library;                            \
-  void libc_replacer_overwrite_##library(                                      \
-      libc_replacer_##library##_func_ptr_t func_new) {                         \
-    atomic_store(&libc_replacer_func_global, func_new);                        \
-  }                                                                            \
-  void libc_replacer_reset_##library(void) {                                   \
-    atomic_store(&libc_replacer_func_global, __real_##library);                \
-  }                                                                            \
-  ret_t __wrap_##library(                                                      \
-      LIBC_REPLACER_INTERNAL_GET_ARG_TYPES_AND_NAMES(__VA_ARGS__)) {           \
-    libc_replacer_##library##_func_ptr_t func_got =                            \
-        atomic_load(&libc_replacer_func_global);                               \
-    return func_got(LIBC_REPLACER_INTERNAL_GET_ARG_NAMES(__VA_ARGS__));        \
-  }                                                                            \
-  LIBC_REPLACER_INTERNAL_NOLINTEND
+#define LIBC_REPLACER_INTERNAL_DEFINE(library, ret_t, ...)                          \
+  ret_t __real_##library(                                                           \
+      LIBC_REPLACER_INTERNAL_GET_ARG_TYPES_AND_NAMES(__VA_ARGS__));                 \
+  ret_t __wrap_##library(                                                           \
+      LIBC_REPLACER_INTERNAL_GET_ARG_TYPES_AND_NAMES(__VA_ARGS__));                 \
+  static _Atomic(libc_replacer_##library##_func_ptr_t)                              \
+      LIBC_REPLACER_INTERNAL_ANNOTATE(                                              \
+          /* NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables) */) \
+          libc_replacer_func_global = __real_##library;                             \
+  void libc_replacer_overwrite_##library(                                           \
+      libc_replacer_##library##_func_ptr_t func_new) {                              \
+    atomic_store(&libc_replacer_func_global, func_new);                             \
+  }                                                                                 \
+  void libc_replacer_reset_##library(void) {                                        \
+    atomic_store(&libc_replacer_func_global, __real_##library);                     \
+  }                                                                                 \
+  ret_t __wrap_##library(                                                           \
+      LIBC_REPLACER_INTERNAL_GET_ARG_TYPES_AND_NAMES(__VA_ARGS__)) {                \
+    libc_replacer_##library##_func_ptr_t func_got =                                 \
+        atomic_load(&libc_replacer_func_global);                                    \
+    return func_got(LIBC_REPLACER_INTERNAL_GET_ARG_NAMES(__VA_ARGS__));             \
+  }
 
 #endif // INCLUDE_GUARD_LIBC_REPLACER_CC_INTERNAL_DEFINITION_HELPER_H_