diff --git a/update-base-files.sh b/update-base-files.sh
new file mode 100755
index 0000000..e2331f5
--- /dev/null
+++ b/update-base-files.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+
+if [ ! -d hardware/interfaces ] ; then
+  echo "Where is hardware/interfaces?";
+  exit 1;
+fi
+
+if [ ! -d system/libhidl/transport ] ; then
+  echo "Where is system/libhidl/transport?";
+  exit 1;
+fi
+
+echo "WARNING: This script changes files in many places."
+
+# These files only exist to facilitate the easy transition to hidl.
+
+options="-Lexport-header \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport"
+
+# hardware/libhardware
+hidl-gen $options \
+         -o hardware/libhardware/include/hardware/sensors-base.h \
+         android.hardware.sensors@1.0
+hidl-gen $options \
+         -o hardware/libhardware/include/hardware/nfc-base.h \
+         android.hardware.nfc@1.0
+
+# system/core
+hidl-gen $options \
+         -o system/core/include/system/graphics-base.h \
+         android.hardware.graphics.common@1.0
+
+# system/media
+hidl-gen $options \
+         -o system/media/audio/include/system/audio-base.h \
+         android.hardware.audio.common@2.0
+hidl-gen $options \
+         -o system/media/audio/include/system/audio_effect-base.h \
+         android.hardware.audio.effect@2.0