diff --git a/libs/android_runtime_lazy/Android.bp b/libs/android_runtime_lazy/Android.bp
index 9284acb..2d6292c 100644
--- a/libs/android_runtime_lazy/Android.bp
+++ b/libs/android_runtime_lazy/Android.bp
@@ -34,6 +34,7 @@
     name: "libandroid_runtime_lazy",
     vendor_available: true,
     double_loadable: true,
+    host_supported: true,
 
     cflags: [
         "-Wall",
diff --git a/libs/binder/ndk/Android.bp b/libs/binder/ndk/Android.bp
index 734a928..8512471 100644
--- a/libs/binder/ndk/Android.bp
+++ b/libs/binder/ndk/Android.bp
@@ -14,9 +14,25 @@
  * limitations under the License.
  */
 
+// TODO(b/31559095): bionic on host should define this
+cc_defaults {
+    name: "libbinder_ndk_host_user",
+    target: {
+        host: {
+            cflags: [
+                "-D__INTRODUCED_IN(n)=",
+                "-D__assert(a,b,c)=",
+            ],
+        },
+    },
+}
+
 cc_library_shared {
     name: "libbinder_ndk",
 
+    defaults: ["libbinder_ndk_host_user"],
+    host_supported: true,
+
     export_include_dirs: [
         "include_ndk",
         "include_platform",
diff --git a/libs/binder/ndk/include_ndk/android/binder_parcel.h b/libs/binder/ndk/include_ndk/android/binder_parcel.h
index 2258210..8c41707 100644
--- a/libs/binder/ndk/include_ndk/android/binder_parcel.h
+++ b/libs/binder/ndk/include_ndk/android/binder_parcel.h
@@ -26,6 +26,7 @@
 
 #pragma once
 
+#include <stddef.h>
 #include <sys/cdefs.h>
 
 #include <android/binder_status.h>