From 9d65b3b4ace313f0f24d7da576e2aec21171510e Mon Sep 17 00:00:00 2001
From: Michael Hills <mhills@gmail.com>
Date: Sun, 30 Jan 2022 00:50:17 +1100
Subject: [PATCH] WIP objc/block support

---
 Cargo.toml |  6 +++++-
 build.rs   | 19 ++++++++++++++++---
 2 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index ff99924..5aa0add 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,10 +11,14 @@ repository = "https://github.com/RustAudio/coreaudio-sys.git"
 build = "build.rs"
 
 [build-dependencies.bindgen]
-version = "0.56"
+version = "0.59.2"
 default-features = false
 features = ["runtime"]
 
+[dependencies]
+objc = { version = "0.2.7", optional = true }
+block = { version = "0.1.6", optional = true }
+
 [features]
 default = ["audio_toolbox", "audio_unit", "core_audio", "open_al", "core_midi"]
 audio_toolbox = []
diff --git a/build.rs b/build.rs
index dd83151..e967a1f 100644
--- a/build.rs
+++ b/build.rs
@@ -125,11 +125,24 @@ fn build(sdk_path: Option<&str>, target: &str) {
     if let Some(sdk_path) = sdk_path {
         builder = builder.clang_args(&["-isysroot", sdk_path]);
     }
-    if target.contains("apple-ios") {
+    #[cfg(feature = "objc")]
+    {
         // time.h as has a variable called timezone that conflicts with some of the objective-c
         // calls from NSCalendar.h in the Foundation framework. This removes that one variable.
-        builder = builder.blacklist_item("timezone");
-        builder = builder.blacklist_item("objc_object");
+        builder = builder.blocklist_item("timezone");
+        // fails to derive Copy
+        builder = builder.blocklist_item("objc_object");
+        // fails to derive Copy
+        builder = builder.blocklist_item("AudioUnitRenderContext");
+
+        builder = builder.clang_args(&["-x", "objective-c"]);
+        builder = builder.objc_extern_crate(true);
+    }
+    #[cfg(feature = "block")]
+    {
+        builder = builder.clang_args(&["-fblocks"]);
+        builder = builder.generate_block(true);
+        builder = builder.block_extern_crate(true);
     }
 
     let meta_header: Vec<_> = headers