From 7247504d612bfafb5c0c7f8cace7230e131c5577 Mon Sep 17 00:00:00 2001
From: Ali Somay <alisomay@runbox.com>
Date: Thu, 28 Nov 2024 16:57:22 +0100
Subject: [PATCH] Define PD_INTERNAL as true

---
 build.rs  | 18 +++++++++++++++++-
 wrapper.h |  6 +++++-
 2 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/build.rs b/build.rs
index dbfba09..7b56df3 100644
--- a/build.rs
+++ b/build.rs
@@ -39,6 +39,15 @@ const PD_FLOATSIZE: &str = "64";
 const WISH: &str = "\"\\\"wish86.exe\\\"\"";
 
 fn main() {
+    // Get the target endianness from Cargo
+    let target_endian = std::env::var("CARGO_CFG_TARGET_ENDIAN").unwrap();
+    // Prepare the endianness defines
+    let endian_define = match target_endian.as_str() {
+        "little" => vec!["-DLITTLE_ENDIAN=1234", "-DBYTE_ORDER=LITTLE_ENDIAN"],
+        "big" => vec!["-DBIG_ENDIAN=4321", "-DBYTE_ORDER=BIG_ENDIAN"],
+        _ => panic!("Unknown target endian: {}", target_endian),
+    };
+
     // Directories
     let project_dir = std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR"));
 
@@ -240,12 +249,19 @@ fn main() {
         .clang_arg(format!("-I{}", libpd_wrapper_dir.to_str().unwrap()))
         .clang_arg(format!("-I{}", pd_source.to_str().unwrap()))
         .clang_arg(format!("-DPD_FLOATSIZE={PD_FLOATSIZE}"))
-        .clang_arg("-DPD_INTERNAL=0") // Undefine PD_INTERNAL because it is not needed for bindings and cmake complains about it.
+        .clang_arg("-DPD_INTERNAL=1")
+        .clang_arg("-DHAVE_C11_ATOMICS=0")
+        .clang_arg("-D__STDC_VERSION__=201112L")
         .clang_arg("-std=c11")
         // Tell cargo to invalidate the built crate whenever any of the
         // included header files changed.
         .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()));
 
+    // Add the endianness defines
+    for arg in endian_define {
+        bindings_builder = bindings_builder.clang_arg(arg);
+    }
+
     #[cfg(target_os = "windows")]
     let bindings = bindings_builder
         .clang_arg(format!("-DWISH={}", WISH))
diff --git a/wrapper.h b/wrapper.h
index 1f0ddf9..76bad2e 100644
--- a/wrapper.h
+++ b/wrapper.h
@@ -1,4 +1,8 @@
-// Headers in pure data submodule
+// Headers from c++11
+
+#if !defined(__STDC_NO_ATOMICS__)
+#include <stdatomic.h>
+#endif
 
 // #include "libpd/pure-data/src/d_soundfile.h"
 // #include "libpd/pure-data/src/g_all_guis.h"