diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1ab997c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,9 @@
+#
+# NOTE! Don't add files that are generated in specific
+# subdirectories here. Add them in the ".gitignore" file
+# in that subdirectory instead.
+#
+# Normal rules
+#
+*.o
+*.o.cmd