Squashed 'third_party/autocxx/' content from commit 629e8fa53

git-subtree-dir: third_party/autocxx
git-subtree-split: 629e8fa531a633164c0b52e2a3cab536d4cd0849
Signed-off-by: Brian Silverman <bsilver16384@gmail.com>
Change-Id: I62a03b0049f49adf029e0204639cdb5468dde1a1
diff --git a/examples/s2/build.rs b/examples/s2/build.rs
new file mode 100644
index 0000000..e61c1af
--- /dev/null
+++ b/examples/s2/build.rs
@@ -0,0 +1,20 @@
+// 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<()> {
+    // It's necessary to use an absolute path here because the
+    // C++ codegen and the macro codegen appears to be run from different
+    // working directories.
+    let path = std::path::PathBuf::from("s2geometry/src");
+    let path2 = std::path::PathBuf::from("src");
+    let mut b = autocxx_build::Builder::new("src/main.rs", &[&path, &path2]).build()?;
+    b.flag_if_supported("-std=c++14")
+        .compile("autocxx-s2-example");
+    println!("cargo:rerun-if-changed=src/main.rs");
+    Ok(())
+}