diff --git a/libbacktrace/Android.bp b/libbacktrace/Android.bp
index 4a525be..285aa6e 100644
--- a/libbacktrace/Android.bp
+++ b/libbacktrace/Android.bp
@@ -57,6 +57,7 @@
 
 cc_library_headers {
     name: "libbacktrace_headers",
+    vendor_available: true,
     export_include_dirs: ["include"],
 }
 
diff --git a/libsystem/Android.bp b/libsystem/Android.bp
index 4d076d5..846a585 100644
--- a/libsystem/Android.bp
+++ b/libsystem/Android.bp
@@ -1,4 +1,15 @@
 cc_library_headers {
     name: "libsystem_headers",
+    vendor_available: true,
+    host_supported: true,
     export_include_dirs: ["include"],
+
+    target: {
+        linux_bionic: {
+            enabled: true,
+        },
+        windows: {
+            enabled: true,
+        },
+    }
 }
diff --git a/libutils/Android.bp b/libutils/Android.bp
index b46ad62..33770ba 100644
--- a/libutils/Android.bp
+++ b/libutils/Android.bp
@@ -16,8 +16,22 @@
     name: "libutils_headers",
     vendor_available: true,
     host_supported: true,
+
+    header_libs: [
+        "libsystem_headers",
+        "libcutils_headers"
+    ],
+    export_header_lib_headers: [
+        "libsystem_headers",
+        "libcutils_headers"
+    ],
     export_include_dirs: ["include"],
+
     target: {
+        android: {
+            header_libs: ["libbacktrace_headers"],
+            export_header_lib_headers: ["libbacktrace_headers"],
+        },
         linux_bionic: {
             enabled: true,
         },
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 2dd5771..540e976 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -384,6 +384,7 @@
     mkdir /data/misc/radio 0770 system radio
     mkdir /data/misc/sms 0770 system radio
     mkdir /data/misc/zoneinfo 0775 system system
+    mkdir /data/misc/textclassifier 0771 system system
     mkdir /data/misc/vpn 0770 system vpn
     mkdir /data/misc/shared_relro 0771 shared_relro shared_relro
     mkdir /data/misc/systemkeys 0700 system system