diff --git a/libs/binder/Android.bp b/libs/binder/Android.bp
index d8101fa..f900f86 100644
--- a/libs/binder/Android.bp
+++ b/libs/binder/Android.bp
@@ -333,7 +333,6 @@
 cc_library {
     name: "libbinder_rpc_unstable",
     srcs: ["libbinder_rpc_unstable.cpp"],
-    defaults: ["libbinder_ndk_host_user"],
     shared_libs: [
         "libbase",
         "libbinder",
diff --git a/libs/binder/ndk/Android.bp b/libs/binder/ndk/Android.bp
index 4289574..77493b3 100644
--- a/libs/binder/ndk/Android.bp
+++ b/libs/binder/ndk/Android.bp
@@ -32,17 +32,10 @@
     ],
 }
 
+// TODO(b/211908498): remove this
 cc_defaults {
     name: "libbinder_ndk_host_user",
     target: {
-        host: {
-            cflags: [
-                "-D__INTRODUCED_IN(n)=",
-                "-D__assert(a,b,c)=do { syslog(LOG_ERR, a \": \" c); abort(); } while(false)",
-                // We want all the APIs to be available on the host.
-                "-D__ANDROID_API__=10000",
-            ],
-        },
         darwin: {
             enabled: false,
         },
@@ -52,7 +45,6 @@
 cc_library {
     name: "libbinder_ndk",
 
-    defaults: ["libbinder_ndk_host_user"],
     host_supported: true,
     recovery_available: true,
 
diff --git a/libs/binder/ndk/include_ndk/android/binder_status.h b/libs/binder/ndk/include_ndk/android/binder_status.h
index 6f1fdfc..76c7aac 100644
--- a/libs/binder/ndk/include_ndk/android/binder_status.h
+++ b/libs/binder/ndk/include_ndk/android/binder_status.h
@@ -32,11 +32,26 @@
 
 __BEGIN_DECLS
 
-#ifndef __ANDROID_API__
-#error Android builds must be compiled against a specific API. If this is an \
- android platform host build, you must use libbinder_ndk_host_user.
+#ifndef __BIONIC__
+
+#ifndef __INTRODUCED_IN
+#define __INTRODUCED_IN(n)
 #endif
 
+#ifndef __assert
+#define __assert(a, b, c)          \
+    do {                           \
+        syslog(LOG_ERR, a ": " c); \
+        abort();                   \
+    } while (false)
+#endif
+
+#ifndef __ANDROID_API__
+#define __ANDROID_API__ 10000
+#endif
+
+#endif  // __BIONIC__
+
 /**
  * Low-level status types for use in binder. This is the least preferable way to
  * return an error for binder services (where binder_exception_t should be used,
diff --git a/libs/binder/rust/Android.bp b/libs/binder/rust/Android.bp
index e2fc18d..e4df98a 100644
--- a/libs/binder/rust/Android.bp
+++ b/libs/binder/rust/Android.bp
@@ -127,14 +127,6 @@
     // Currently necessary for host builds
     // TODO(b/31559095): bionic on host should define this
     target: {
-        host: {
-            cflags: [
-                "-D__INTRODUCED_IN(n)=",
-                "-D__assert(a,b,c)=",
-                // We want all the APIs to be available on the host.
-                "-D__ANDROID_API__=10000",
-            ],
-        },
         darwin: {
             enabled: false,
         },
diff --git a/libs/binder/tests/parcel_fuzzer/Android.bp b/libs/binder/tests/parcel_fuzzer/Android.bp
index acf3f8f..1446802 100644
--- a/libs/binder/tests/parcel_fuzzer/Android.bp
+++ b/libs/binder/tests/parcel_fuzzer/Android.bp
@@ -9,7 +9,6 @@
 
 cc_fuzz {
     name: "binder_parcel_fuzzer",
-    defaults: ["libbinder_ndk_host_user"],
     host_supported: true,
 
     fuzz_config: {
@@ -50,6 +49,9 @@
                 "libbinder",
             ],
         },
+        darwin: {
+            enabled: false,
+        },
     },
     // This flag enables verbose output in the fuzz target, and is very useful
     // for debugging a failure. If you are trying to diagnose how a crash was
@@ -63,7 +65,7 @@
     target: {
         darwin: {
             enabled: false,
-        }
+        },
     },
     srcs: [
         "random_fd.cpp",