1 files changed, 33 insertions, 0 deletions
diff --git a/src/wasm-wasi-component/build.rs b/src/wasm-wasi-component/build.rs
new file mode 100644
index 00000000..5ea74f17
--- /dev/null
+++ b/src/wasm-wasi-component/build.rs
@@ -0,0 +1,33 @@
+use std::env;
+use std::path::PathBuf;
+
+fn main() {
+    // Tell cargo to invalidate the built crate whenever the wrapper changes
+    println!("cargo:rerun-if-changed=wrapper.h");
+
+    let bindings = bindgen::Builder::default()
+        .clang_args(["-I", "../"])
+        .clang_args(["-I", "../../build/include"])
+        .header("./wrapper.h")
+        // only generate bindings for `nxt_*` header files
+        .allowlist_file(".*nxt_.*.h")
+        // generates an "improper_ctypes" warning and we don't need it anyway
+        .blocklist_function("nxt_vsprintf")
+        // Tell cargo to invalidate the built crate whenever any of the
+        // included header files changed.
+        .parse_callbacks(Box::new(bindgen::CargoCallbacks))
+        // disable some features which aren't necessary
+        .layout_tests(false)
+        .derive_debug(false)
+        .generate()
+        .expect("Unable to generate bindings");
+
+    cc::Build::new()
+        .object("../../build/src/nxt_unit.o")
+        .compile("nxt-unit");
+
+    let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
+    bindings
+        .write_to_file(out_path.join("bindings.rs"))
+        .expect("Couldn't write bindings!");
+}