在Android 12创建新的HIDL时，会如下错误
[100% 4/4] out/soong/.bootstrap/bin/soong_build out/soong/build.ninja
FAILED: out/soong/build.ninja
cd "$(dirname "out/soong/.bootstrap/bin/soong_build")" && BUILDER="$PWD/$(basename "out/soong/.bootstrap/bin/soong_build")" && cd / && "$BUILDER" --top "$TOP" --out "out/soong" -n "out" -d "out/soong/build.ninja.d" -t -l out/.module_paths/Android.bp.list -globFile out/soong/.bootstrap/build-globs.ninja -o out/soong/build.ninja --available_env out/soong/soong.environment.available --used_env out/soong/soong.environment.used Android.bp
Clang SA is not enabled
error: hardware/interfaces/hal/1.0/Android.bp:4:9: module "android.hardware.hal@1.0_interface": name: No more HIDL interfaces can be added to Android. Please use AIDL.
10:19:03 soong bootstrap failed with: exit status 1#### failed to build some targets (5 seconds) ####
查阅资料HIDL | Android 开源项目 | Android Open Source Project
HIDL
HAL interface definition language or HIDL is an interface description language (IDL) to specify the interface between a HAL and its users. HIDL allows specifying types and method calls, collected into interfaces and packages. More broadly, HIDL is a system for communicating between codebases that may be compiled independently. As of Android 10, HIDL is deprecated and Android is migrating to use AIDL everywhere.
控制代码，grep到system/tools/hidl/build/hidl_interface.go
590 func hidlInterfaceMutator(mctx android.LoadHookContext, i *hidlInterface) {
591 if !canInterfaceExist(i.ModuleBase.Name()) {
592 mctx.PropertyErrorf("name", "No more HIDL interfaces can be added to Android. Please use AIDL.")
593 return
594 }
595