Reuse same AIBinder type in rpcbinder bindgen.

This avoids some casts.

Test: m vm
Change-Id: I7296a3e61a167224ab49954f7025066aca545d50
diff --git a/libs/binder/rust/rpcbinder/Android.bp b/libs/binder/rust/rpcbinder/Android.bp
index f169390..5ebc27f 100644
--- a/libs/binder/rust/rpcbinder/Android.bp
+++ b/libs/binder/rust/rpcbinder/Android.bp
@@ -16,7 +16,7 @@
     ],
     rustlibs: [
         "libbinder_ndk_sys",
-        "libbinder_rpc_unstable_bindgen",
+        "libbinder_rpc_unstable_bindgen_sys",
         "libbinder_rs",
         "libdowncast_rs",
         "liblibc",
@@ -29,6 +29,35 @@
     min_sdk_version: "Tiramisu",
 }
 
+// Build a separate rust_library rather than depending directly on libbinder_rpc_unstable_bindgen,
+// to work around the fact that rust_bindgen targets only produce rlibs and not dylibs, which would
+// result in duplicate conflicting versions of libbinder_ndk_sys. This will hopefully be fixed in
+// the build system, at which point we can delete this target and go back to using
+// libbinder_rpc_unstable_bindgen directly.
+rust_library {
+    name: "libbinder_rpc_unstable_bindgen_sys",
+    crate_name: "binder_rpc_unstable_bindgen",
+    srcs: [
+        ":libbinder_rpc_unstable_bindgen",
+    ],
+    visibility: [":__subpackages__"],
+    rustlibs: [
+        "libbinder_ndk_sys",
+    ],
+    shared_libs: [
+        "libbinder_rpc_unstable",
+        "libutils",
+    ],
+    apex_available: [
+        "com.android.compos",
+        "com.android.uwb",
+        "com.android.virt",
+    ],
+    min_sdk_version: "Tiramisu",
+    lints: "none",
+    clippy_lints: "none",
+}
+
 // TODO(b/184872979): remove once the RPC Binder API is stabilised.
 rust_bindgen {
     name: "libbinder_rpc_unstable_bindgen",
@@ -36,6 +65,15 @@
     crate_name: "binder_rpc_unstable_bindgen",
     visibility: [":__subpackages__"],
     source_stem: "bindings",
+    bindgen_flags: [
+        "--blocklist-type",
+        "AIBinder",
+        "--raw-line",
+        "use binder_ndk_sys::AIBinder;",
+    ],
+    rustlibs: [
+        "libbinder_ndk_sys",
+    ],
     shared_libs: [
         "libbinder_rpc_unstable",
         "libutils",
@@ -52,6 +90,9 @@
     name: "libbinder_rpc_unstable_bindgen_test",
     srcs: [":libbinder_rpc_unstable_bindgen"],
     crate_name: "binder_rpc_unstable_bindgen",
+    rustlibs: [
+        "libbinder_ndk_sys",
+    ],
     test_suites: ["general-tests"],
     auto_gen_config: true,
     clippy_lints: "none",