set macos link args automatically

Author: nitsky

sys/build.rs

@@ -1,12 +1,24 @@
 fn main() {
 	let target_os = std::env::var("CARGO_CFG_TARGET_OS").unwrap();
-	if target_os == "windows" {
-		windows_link_node_import_library();
-	}
+	match target_os.as_str() {
+		"macos" => {
+			macos_setup();
+		}
+		"windows" => {
+			windows_setup();
+		}
+		_ => {}
+	};
 }
 
-fn windows_link_node_import_library() {
-	let version = "v15.9.0";
+fn macos_setup() {
+	println!("cargo:rustc-cdylib-link-arg=-Wl");
+	println!("cargo:rustc-cdylib-link-arg=-undefined");
+	println!("cargo:rustc-cdylib-link-arg=dynamic_lookup");
+}
+
+fn windows_setup() {
+	let version = "v16.4.0";
 	let arch = "x64";
 	let url = format!(
 		"https://nodejs.org/dist/{version}/win-{arch}/node.lib",
@@ -17,7 +29,6 @@ fn windows_link_node_import_library() {
 	let out_dir = std::path::PathBuf::from(std::env::var("OUT_DIR").unwrap());
 	let node_lib_path = out_dir.join("node.lib");
 	std::fs::write(node_lib_path, node_lib_bytes).unwrap();
-	println!("cargo:rerun-if-changed=build.rs");
 	println!("cargo:rustc-link-search={}", out_dir.to_str().unwrap());
 	println!("cargo:rustc-link-lib=node");
 }