diff --git a/neuralnetworks/aidl/utils/Android.bp b/neuralnetworks/aidl/utils/Android.bp
index 955f21f..0ccc711 100644
--- a/neuralnetworks/aidl/utils/Android.bp
+++ b/neuralnetworks/aidl/utils/Android.bp
@@ -41,12 +41,8 @@
         "android.hardware.neuralnetworks-V1-ndk_platform",
         "libbinder_ndk",
         "libhidlbase",
+        "libnativewindow",
     ],
-    target: {
-        android: {
-            shared_libs: ["libnativewindow"],
-        },
-    },
 }
 
 cc_test {
@@ -74,21 +70,9 @@
         "libhidlbase",
         "libhidlmemory",
         "liblog",
+        "libnativewindow",
         "libutils",
     ],
-    target: {
-        android: {
-            shared_libs: ["libnativewindow"],
-        },
-        host: {
-            cflags: [
-                "-D__INTRODUCED_IN(x)=",
-                "-D__assert(a,b,c)=",
-                // We want all the APIs to be available on the host.
-                "-D__ANDROID_API__=10000",
-            ],
-        },
-    },
     cflags: [
         /* GMOCK defines functions for printing all MOCK_DEVICE arguments and
          * MockDevice contains a string pointer which triggers a warning in the
diff --git a/neuralnetworks/aidl/utils/src/Conversions.cpp b/neuralnetworks/aidl/utils/src/Conversions.cpp
index f087156..0517730 100644
--- a/neuralnetworks/aidl/utils/src/Conversions.cpp
+++ b/neuralnetworks/aidl/utils/src/Conversions.cpp
@@ -25,6 +25,7 @@
 #include <android-base/mapped_file.h>
 #include <android-base/unique_fd.h>
 #include <android/binder_auto_utils.h>
+#include <android/hardware_buffer.h>
 #include <cutils/native_handle.h>
 #include <nnapi/OperandTypes.h>
 #include <nnapi/OperationTypes.h>
@@ -35,6 +36,7 @@
 #include <nnapi/Validation.h>
 #include <nnapi/hal/CommonUtils.h>
 #include <nnapi/hal/HandleError.h>
+#include <vndk/hardware_buffer.h>
 
 #include <algorithm>
 #include <chrono>
@@ -46,11 +48,6 @@
 
 #include "Utils.h"
 
-#ifdef __ANDROID__
-#include <android/hardware_buffer.h>
-#include <vndk/hardware_buffer.h>
-#endif  // __ANDROID__
-
 #define VERIFY_NON_NEGATIVE(value) \
     while (UNLIKELY(value < 0)) return NN_ERROR()
 
@@ -122,7 +119,6 @@
 
 using UniqueNativeHandle = std::unique_ptr<native_handle_t, NativeHandleDeleter>;
 
-#ifdef __ANDROID__
 GeneralResult<UniqueNativeHandle> nativeHandleFromAidlHandle(const NativeHandle& handle) {
     auto nativeHandle = UniqueNativeHandle(dupFromAidl(handle));
     if (nativeHandle.get() == nullptr) {
@@ -135,7 +131,6 @@
     }
     return nativeHandle;
 }
-#endif  // __ANDROID__
 
 }  // anonymous namespace
 
@@ -376,7 +371,6 @@
             return createSharedMemoryFromFd(size, prot, fd, offset);
         }
         case Tag::hardwareBuffer: {
-#ifdef __ANDROID__
             const auto& hardwareBuffer = memory.get<Tag::hardwareBuffer>();
 
             const UniqueNativeHandle handle =
@@ -399,11 +393,6 @@
             }
 
             return createSharedMemoryFromAHWB(ahwb, /*takeOwnership=*/true);
-#else   // __ANDROID__
-            LOG(FATAL) << "GeneralResult<SharedMemory> unvalidatedConvert(const aidl_hal::Memory& "
-                          "memory): Not Available on Host Build";
-            return NN_ERROR() << "createFromHandle failed";
-#endif  // __ANDROID__
         }
     }
     return NN_ERROR() << "Unrecognized Memory::Tag: " << memory.getTag();
@@ -623,7 +612,6 @@
 template <class... Ts>
 overloaded(Ts...)->overloaded<Ts...>;
 
-#ifdef __ANDROID__
 nn::GeneralResult<common::NativeHandle> aidlHandleFromNativeHandle(
         const native_handle_t& nativeHandle) {
     auto handle = ::android::dupToAidl(&nativeHandle);
@@ -633,7 +621,6 @@
     }
     return handle;
 }
-#endif  // __ANDROID__
 
 nn::GeneralResult<Memory> unvalidatedConvert(const nn::Memory::Ashmem& memory) {
     if constexpr (std::numeric_limits<size_t>::max() > std::numeric_limits<int64_t>::max()) {
@@ -681,7 +668,6 @@
 }
 
 nn::GeneralResult<Memory> unvalidatedConvert(const nn::Memory::HardwareBuffer& memory) {
-#ifdef __ANDROID__
     const native_handle_t* nativeHandle = AHardwareBuffer_getNativeHandle(memory.handle.get());
     if (nativeHandle == nullptr) {
         return (NN_ERROR() << "unvalidatedConvert failed because AHardwareBuffer_getNativeHandle "
@@ -709,12 +695,6 @@
             .handle = std::move(handle),
     };
     return Memory::make<Memory::Tag::hardwareBuffer>(std::move(hardwareBuffer));
-#else   // __ANDROID__
-    LOG(FATAL) << "nn::GeneralResult<Memory> unvalidatedConvert(const nn::Memory::HardwareBuffer& "
-                  "memory): Not Available on Host Build";
-    (void)memory;
-    return (NN_ERROR() << "unvalidatedConvert failed").operator nn::GeneralResult<Memory>();
-#endif  // __ANDROID__
 }
 
 nn::GeneralResult<Memory> unvalidatedConvert(const nn::Memory::Unknown& /*memory*/) {