diff --git a/neuralnetworks/1.0/utils/Android.bp b/neuralnetworks/1.0/utils/Android.bp
index 0ad9926..8c51c67 100644
--- a/neuralnetworks/1.0/utils/Android.bp
+++ b/neuralnetworks/1.0/utils/Android.bp
@@ -44,6 +44,7 @@
 
 cc_test {
     name: "neuralnetworks_utils_hal_1_0_test",
+    host_supported: true,
     srcs: ["test/*.cpp"],
     static_libs: [
         "android.hardware.neuralnetworks@1.0",
@@ -62,8 +63,12 @@
         "libhidlbase",
         "libhidlmemory",
         "liblog",
-        "libnativewindow",
         "libutils",
     ],
+    target: {
+        android: {
+            shared_libs: ["libnativewindow"],
+        },
+    },
     test_suites: ["general-tests"],
 }
diff --git a/neuralnetworks/1.0/vts/functional/Android.bp b/neuralnetworks/1.0/vts/functional/Android.bp
index 9a91560..b33c581 100644
--- a/neuralnetworks/1.0/vts/functional/Android.bp
+++ b/neuralnetworks/1.0/vts/functional/Android.bp
@@ -25,19 +25,10 @@
 
 cc_defaults {
     name: "neuralnetworks_vts_functional_defaults",
-    defaults: ["VtsHalTargetTestDefaults"],
-    arch: {
-        x86: {
-            cflags: [ "-D_Float16=__fp16",
-                      "-Xclang", "-fnative-half-type",
-                      "-Xclang", "-fallow-half-arguments-and-returns" ],
-        },
-        x86_64: {
-            cflags: [ "-D_Float16=__fp16",
-                      "-Xclang", "-fnative-half-type",
-                      "-Xclang", "-fallow-half-arguments-and-returns" ],
-        },
-    },
+    defaults: [
+        "VtsHalTargetTestDefaults",
+        "neuralnetworks_float16",
+    ],
 }
 
 cc_library_static {
@@ -83,6 +74,7 @@
         "libnativewindow",
     ],
     static_libs: [
+        "VtsHalNeuralNetworksV1_0_utils",
         "android.hardware.neuralnetworks@1.0",
         "android.hidl.allocator@1.0",
         "android.hidl.memory@1.0",
@@ -90,7 +82,6 @@
         "libhidlmemory",
         "libneuralnetworks_generated_test_harness",
         "libneuralnetworks_utils",
-        "VtsHalNeuralNetworksV1_0_utils",
     ],
     whole_static_libs: [
         "neuralnetworks_generated_V1_0_example",
@@ -98,5 +89,8 @@
     header_libs: [
         "libneuralnetworks_headers",
     ],
-    test_suites: ["general-tests", "vts"],
+    test_suites: [
+        "general-tests",
+        "vts",
+    ],
 }
diff --git a/neuralnetworks/1.1/utils/Android.bp b/neuralnetworks/1.1/utils/Android.bp
index d9e82d4..737ff58 100644
--- a/neuralnetworks/1.1/utils/Android.bp
+++ b/neuralnetworks/1.1/utils/Android.bp
@@ -46,6 +46,7 @@
 
 cc_test {
     name: "neuralnetworks_utils_hal_1_1_test",
+    host_supported: true,
     srcs: ["test/*.cpp"],
     static_libs: [
         "android.hardware.neuralnetworks@1.0",
@@ -66,8 +67,12 @@
         "libhidlbase",
         "libhidlmemory",
         "liblog",
-        "libnativewindow",
         "libutils",
     ],
+    target: {
+        android: {
+            shared_libs: ["libnativewindow"],
+        },
+    },
     test_suites: ["general-tests"],
 }
diff --git a/neuralnetworks/1.1/vts/functional/Android.bp b/neuralnetworks/1.1/vts/functional/Android.bp
index 826ba96..c001112 100644
--- a/neuralnetworks/1.1/vts/functional/Android.bp
+++ b/neuralnetworks/1.1/vts/functional/Android.bp
@@ -28,18 +28,19 @@
     defaults: ["neuralnetworks_vts_functional_defaults"],
     srcs: [
         "BasicTests.cpp",
+        "GeneratedTestHarness.cpp",
         "TestAssertions.cpp",
         "TestMain.cpp",
         "ValidateModel.cpp",
         "ValidateRequest.cpp",
         "VtsHalNeuralnetworks.cpp",
-        "GeneratedTestHarness.cpp",
     ],
     shared_libs: [
         "libfmq",
         "libnativewindow",
     ],
     static_libs: [
+        "VtsHalNeuralNetworksV1_0_utils",
         "android.hardware.neuralnetworks@1.0",
         "android.hardware.neuralnetworks@1.1",
         "android.hidl.allocator@1.0",
@@ -48,7 +49,6 @@
         "libhidlmemory",
         "libneuralnetworks_generated_test_harness",
         "libneuralnetworks_utils",
-        "VtsHalNeuralNetworksV1_0_utils",
     ],
     whole_static_libs: [
         "neuralnetworks_generated_V1_0_example",
@@ -57,5 +57,8 @@
     header_libs: [
         "libneuralnetworks_headers",
     ],
-    test_suites: ["general-tests", "vts"],
+    test_suites: [
+        "general-tests",
+        "vts",
+    ],
 }
diff --git a/neuralnetworks/1.2/utils/Android.bp b/neuralnetworks/1.2/utils/Android.bp
index 41281ee..4eefb0f 100644
--- a/neuralnetworks/1.2/utils/Android.bp
+++ b/neuralnetworks/1.2/utils/Android.bp
@@ -50,10 +50,21 @@
             cflags: ["-DNN_DEBUGGABLE"],
         },
     },
+    target: {
+        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",
+            ],
+        },
+    },
 }
 
 cc_test {
     name: "neuralnetworks_utils_hal_1_2_test",
+    host_supported: true,
     srcs: ["test/*.cpp"],
     static_libs: [
         "android.hardware.neuralnetworks@1.0",
@@ -76,8 +87,12 @@
         "libhidlbase",
         "libhidlmemory",
         "liblog",
-        "libnativewindow",
         "libutils",
     ],
+    target: {
+        android: {
+            shared_libs: ["libnativewindow"],
+        },
+    },
     test_suites: ["general-tests"],
 }
diff --git a/neuralnetworks/1.3/utils/Android.bp b/neuralnetworks/1.3/utils/Android.bp
index 28c036a..7acb4fc 100644
--- a/neuralnetworks/1.3/utils/Android.bp
+++ b/neuralnetworks/1.3/utils/Android.bp
@@ -47,10 +47,21 @@
     export_static_lib_headers: [
         "neuralnetworks_utils_hal_common",
     ],
+    target: {
+        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",
+            ],
+        },
+    },
 }
 
 cc_test {
     name: "neuralnetworks_utils_hal_1_3_test",
+    host_supported: true,
     srcs: ["test/*.cpp"],
     static_libs: [
         "android.hardware.neuralnetworks@1.0",
@@ -75,8 +86,12 @@
         "libhidlbase",
         "libhidlmemory",
         "liblog",
-        "libnativewindow",
         "libutils",
     ],
+    target: {
+        android: {
+            shared_libs: ["libnativewindow"],
+        },
+    },
     test_suites: ["general-tests"],
 }
diff --git a/neuralnetworks/aidl/Android.bp b/neuralnetworks/aidl/Android.bp
index ebf4654..81252c7 100644
--- a/neuralnetworks/aidl/Android.bp
+++ b/neuralnetworks/aidl/Android.bp
@@ -9,6 +9,7 @@
 
 aidl_interface {
     name: "android.hardware.neuralnetworks",
+    host_supported: true,
     vendor_available: true,
     srcs: [
         "android/hardware/neuralnetworks/*.aidl",
diff --git a/neuralnetworks/aidl/utils/Android.bp b/neuralnetworks/aidl/utils/Android.bp
index 0ccc711..955f21f 100644
--- a/neuralnetworks/aidl/utils/Android.bp
+++ b/neuralnetworks/aidl/utils/Android.bp
@@ -41,8 +41,12 @@
         "android.hardware.neuralnetworks-V1-ndk_platform",
         "libbinder_ndk",
         "libhidlbase",
-        "libnativewindow",
     ],
+    target: {
+        android: {
+            shared_libs: ["libnativewindow"],
+        },
+    },
 }
 
 cc_test {
@@ -70,9 +74,21 @@
         "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 0517730..f087156 100644
--- a/neuralnetworks/aidl/utils/src/Conversions.cpp
+++ b/neuralnetworks/aidl/utils/src/Conversions.cpp
@@ -25,7 +25,6 @@
 #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>
@@ -36,7 +35,6 @@
 #include <nnapi/Validation.h>
 #include <nnapi/hal/CommonUtils.h>
 #include <nnapi/hal/HandleError.h>
-#include <vndk/hardware_buffer.h>
 
 #include <algorithm>
 #include <chrono>
@@ -48,6 +46,11 @@
 
 #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()
 
@@ -119,6 +122,7 @@
 
 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) {
@@ -131,6 +135,7 @@
     }
     return nativeHandle;
 }
+#endif  // __ANDROID__
 
 }  // anonymous namespace
 
@@ -371,6 +376,7 @@
             return createSharedMemoryFromFd(size, prot, fd, offset);
         }
         case Tag::hardwareBuffer: {
+#ifdef __ANDROID__
             const auto& hardwareBuffer = memory.get<Tag::hardwareBuffer>();
 
             const UniqueNativeHandle handle =
@@ -393,6 +399,11 @@
             }
 
             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();
@@ -612,6 +623,7 @@
 template <class... Ts>
 overloaded(Ts...)->overloaded<Ts...>;
 
+#ifdef __ANDROID__
 nn::GeneralResult<common::NativeHandle> aidlHandleFromNativeHandle(
         const native_handle_t& nativeHandle) {
     auto handle = ::android::dupToAidl(&nativeHandle);
@@ -621,6 +633,7 @@
     }
     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()) {
@@ -668,6 +681,7 @@
 }
 
 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 "
@@ -695,6 +709,12 @@
             .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*/) {
diff --git a/neuralnetworks/utils/common/Android.bp b/neuralnetworks/utils/common/Android.bp
index 2ed1e40..d8f6808 100644
--- a/neuralnetworks/utils/common/Android.bp
+++ b/neuralnetworks/utils/common/Android.bp
@@ -37,13 +37,18 @@
     shared_libs: [
         "android.hardware.neuralnetworks-V1-ndk_platform",
         "libhidlbase",
-        "libnativewindow",
         "libbinder_ndk",
     ],
+    target: {
+        android: {
+            shared_libs: ["libnativewindow"],
+        },
+    },
 }
 
 cc_test {
     name: "neuralnetworks_utils_hal_common_test",
+    host_supported: true,
     srcs: ["test/*.cpp"],
     static_libs: [
         "android.hardware.neuralnetworks@1.0",
@@ -61,8 +66,12 @@
         "libhidlbase",
         "libhidlmemory",
         "liblog",
-        "libnativewindow",
         "libutils",
     ],
+    target: {
+        android: {
+            shared_libs: ["libnativewindow"],
+        },
+    },
     test_suites: ["general-tests"],
 }
diff --git a/neuralnetworks/utils/common/src/CommonUtils.cpp b/neuralnetworks/utils/common/src/CommonUtils.cpp
index 906b0cf..ae02c88 100644
--- a/neuralnetworks/utils/common/src/CommonUtils.cpp
+++ b/neuralnetworks/utils/common/src/CommonUtils.cpp
@@ -20,14 +20,12 @@
 
 #include <android-base/logging.h>
 #include <android-base/unique_fd.h>
-#include <android/hardware_buffer.h>
 #include <hidl/HidlSupport.h>
 #include <nnapi/Result.h>
 #include <nnapi/SharedMemory.h>
 #include <nnapi/TypeUtils.h>
 #include <nnapi/Types.h>
 #include <nnapi/Validation.h>
-#include <vndk/hardware_buffer.h>
 
 #include <algorithm>
 #include <any>
@@ -36,6 +34,11 @@
 #include <variant>
 #include <vector>
 
+#ifdef __ANDROID__
+#include <android/hardware_buffer.h>
+#include <vndk/hardware_buffer.h>
+#endif  // __ANDROID__
+
 namespace android::hardware::neuralnetworks::utils {
 namespace {
 
@@ -139,6 +142,7 @@
 }
 
 nn::GeneralResult<hidl_memory> createHidlMemoryFrom(const nn::Memory::HardwareBuffer& memory) {
+#ifdef __ANDROID__
     const auto* ahwb = memory.handle.get();
     AHardwareBuffer_Desc bufferDesc;
     AHardwareBuffer_describe(ahwb, &bufferDesc);
@@ -152,6 +156,12 @@
     hidl_handle copiedHandle(hidlHandle);
 
     return hidl_memory(name, std::move(copiedHandle), size);
+#else   // __ANDROID__
+    LOG(FATAL) << "nn::GeneralResult<hidl_memory> createHidlMemoryFrom(const "
+                  "nn::Memory::HardwareBuffer& memory): Not Available on Host Build";
+    (void)memory;
+    return (NN_ERROR() << "createHidlMemoryFrom failed").operator nn::GeneralResult<hidl_memory>();
+#endif  // __ANDROID__
 }
 
 nn::GeneralResult<hidl_memory> createHidlMemoryFrom(const nn::Memory::Unknown& memory) {
@@ -333,9 +343,11 @@
     return std::visit([](const auto& x) { return createHidlMemoryFrom(x); }, memory->handle);
 }
 
+#ifdef __ANDROID__
 static uint32_t roundUpToMultiple(uint32_t value, uint32_t multiple) {
     return (value + multiple - 1) / multiple * multiple;
 }
+#endif  // __ANDROID__
 
 nn::GeneralResult<nn::SharedMemory> createSharedMemoryFromHidlMemory(const hidl_memory& memory) {
     CHECK_LE(memory.size(), std::numeric_limits<size_t>::max());
@@ -387,6 +399,7 @@
         return std::make_shared<const nn::Memory>(nn::Memory{.handle = std::move(handle)});
     }
 
+#ifdef __ANDROID__
     const auto size = memory.size();
     const auto format = AHARDWAREBUFFER_FORMAT_BLOB;
     const auto usage = AHARDWAREBUFFER_USAGE_CPU_READ_OFTEN | AHARDWAREBUFFER_USAGE_CPU_WRITE_OFTEN;
@@ -423,6 +436,13 @@
     }
 
     return nn::createSharedMemoryFromAHWB(hardwareBuffer, /*takeOwnership=*/true);
+#else   // __ANDROID__
+    LOG(FATAL) << "nn::GeneralResult<nn::SharedMemory> createSharedMemoryFromHidlMemory(const "
+                  "hidl_memory& memory): Not Available on Host Build";
+    return (NN_ERROR() << "createSharedMemoryFromHidlMemory failed")
+            .
+            operator nn::GeneralResult<nn::SharedMemory>();
+#endif  // __ANDROID__
 }
 
 nn::GeneralResult<hidl_handle> hidlHandleFromSharedHandle(const nn::Handle& handle) {