diff --git a/.clangd b/.clangd
new file mode 100644
index 0000000000000..534bd8fa45fb9
--- /dev/null
+++ b/.clangd
@@ -0,0 +1,2 @@
+CompileFlags:
+  Add: [-I., -I.., -Iflisp, -Isupport, -I../support, -I../usr/include, -I../../usr/include, -Wall,]
diff --git a/.gitignore b/.gitignore
index 836a35781cd6f..0368b7d19efa0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -34,6 +34,7 @@
 .idea/*
 .vscode/*
 *.heapsnapshot
+.cache
 # Buildkite: Ignore the entire .buildkite directory
 /.buildkite