From 19121f3f1f5205d95c2ce309235b55db5129cb0f Mon Sep 17 00:00:00 2001
From: iota9star <iota9star@foxmail.com>
Date: Sat, 12 Jul 2025 11:28:58 +0800
Subject: [PATCH] feat: add sysroot and bindgen configuration for Rust targets

---
 build_tool/lib/src/android_environment.dart | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/build_tool/lib/src/android_environment.dart b/build_tool/lib/src/android_environment.dart
index 9342964..6509e55 100644
--- a/build_tool/lib/src/android_environment.dart
+++ b/build_tool/lib/src/android_environment.dart
@@ -147,6 +147,19 @@ class AndroidEnvironment {
     final toolTempDir =
         Platform.environment['CARGOKIT_TOOL_TEMP_DIR'] ?? targetTempDir;
 
+    final sysroot = path.join(
+      ndkPath,
+      'toolchains',
+      'llvm',
+      'prebuilt',
+      hostArch,
+      'sysroot',
+    );
+
+    final bindgenKey = "BINDGEN_EXTRA_CLANG_ARGS_${target.rust}";
+    final bindgenValue =
+        "--sysroot=$sysroot -I${path.join(sysroot, 'usr', 'include', target.rust)}";
+
     return {
       arKey: arValue,
       ccKey: ccValue,
@@ -156,6 +169,7 @@ class AndroidEnvironment {
       ranlibKey: ranlibValue,
       rustFlagsKey: rustFlagsValue,
       linkerKey: selfPath,
+      bindgenKey: bindgenValue,
       // Recognized by main() so we know when we're acting as a wrapper
       '_CARGOKIT_NDK_LINK_TARGET': targetArg,
       '_CARGOKIT_NDK_LINK_CLANG': ccValue,