diff --git a/.dir-locals.el b/.dir-locals.el
new file mode 100644
index 000000000..6df82f2b0
--- /dev/null
+++ b/.dir-locals.el
@@ -0,0 +1,4 @@
+((c++-mode
+  (eval add-hook 'before-save-hook #'clang-format-buffer nil t))
+ (c-mode
+  (eval add-hook 'before-save-hook #'clang-format-buffer nil t)))