diff --git a/demo/build.rs b/demo/build.rs
new file mode 100644
index 0000000..9a16a34
--- /dev/null
+++ b/demo/build.rs
@@ -0,0 +1,17 @@
+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+fn main() -> miette::Result<()> {
+    let path = std::path::PathBuf::from("src");
+    let mut b = autocxx_build::Builder::new("src/main.rs", &[&path]).build()?;
+    b.flag_if_supported("-std=c++14").compile("autocxx-demo");
+
+    println!("cargo:rerun-if-changed=src/main.rs");
+    println!("cargo:rerun-if-changed=src/input.h");
+    Ok(())
+}