From 241a1dfabf9aad9dc740f90bed7d5dbd4275e617 Mon Sep 17 00:00:00 2001
From: Eric Seidel <github@eseidel.com>
Date: Thu, 6 Apr 2023 10:14:49 -0700
Subject: [PATCH] Autogenerate include/updater.h every time we build. (#3)

Turns out this was way easier than I thought.
https://github.com/shorebirdtech/shorebird/issues/121
Docs:
https://github.com/eqrion/cbindgen/blob/master/docs.md#buildrs
---
 library/Cargo.toml                     |  4 ++++
 library/build.rs                       | 13 +++++++++++++
 cbindgen.toml => library/cbindgen.toml |  0
 3 files changed, 17 insertions(+)
 create mode 100644 library/build.rs
 rename cbindgen.toml => library/cbindgen.toml (100%)

diff --git a/library/Cargo.toml b/library/Cargo.toml
index a3d00b2..3a82912 100644
--- a/library/Cargo.toml
+++ b/library/Cargo.toml
@@ -48,3 +48,7 @@ log-panics = { version = "2", features = ["with-backtrace"]}
 
 [dev-dependencies]
 tempdir = "0.3.7"
+
+# https://github.com/eqrion/cbindgen/blob/master/docs.md#buildrs
+[build-dependencies]
+cbindgen = "0.24.0"
diff --git a/library/build.rs b/library/build.rs
new file mode 100644
index 0000000..f1f5ea6
--- /dev/null
+++ b/library/build.rs
@@ -0,0 +1,13 @@
+extern crate cbindgen;
+
+use std::env;
+
+// See https://github.com/eqrion/cbindgen/blob/master/docs.md#buildrs
+fn main() {
+    let crate_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
+
+    // Should this write to the out dir (target) instead?
+    cbindgen::generate(crate_dir)
+        .expect("Unable to generate bindings")
+        .write_to_file("include/updater.h");
+}
diff --git a/cbindgen.toml b/library/cbindgen.toml
similarity index 100%
rename from cbindgen.toml
rename to library/cbindgen.toml