diff --git a/gnss/1.0/IAGnss.hal b/gnss/1.0/IAGnss.hal
index 2cce519..b8f5746 100644
--- a/gnss/1.0/IAGnss.hal
+++ b/gnss/1.0/IAGnss.hal
@@ -22,6 +22,7 @@
  * Extended interface for AGNSS support.
  */
 interface IAGnss {
+    @export(name="", value_prefix="APN_IP_")
     enum ApnIpType : uint8_t {
         INVALID  = 0,
         IPV4     = 1,
diff --git a/gnss/1.0/IAGnssCallback.hal b/gnss/1.0/IAGnssCallback.hal
index 1984725..fe2e101 100644
--- a/gnss/1.0/IAGnssCallback.hal
+++ b/gnss/1.0/IAGnssCallback.hal
@@ -19,11 +19,13 @@
 /** Callback structure for the AGNSS interface. */
 interface IAGnssCallback {
     /** AGNSS type **/
+    @export(name="", value_prefix="AGPS_")
     enum AGnssType : uint8_t {
         TYPE_SUPL         = 1,
         TYPE_C2K          = 2
     };
 
+    @export(name="", value_prefix="GNSS_")
     enum AGnssStatusValue : uint8_t {
         /** GNSS requests data connection for AGNSS. */
         REQUEST_AGNSS_DATA_CONN  = 1,
@@ -40,6 +42,7 @@
     /*
      * Represents the status of AGNSS augmented to support IPv4.
      */
+    @export(name="", value_prefix="GPS_")
     struct AGnssStatusIpV4 {
         AGnssType type;
         AGnssStatusValue status;
diff --git a/gnss/1.0/IAGnssRil.hal b/gnss/1.0/IAGnssRil.hal
index 499b874..6292273 100644
--- a/gnss/1.0/IAGnssRil.hal
+++ b/gnss/1.0/IAGnssRil.hal
@@ -25,12 +25,14 @@
  * location, unique subscriber ID, phone number string and network availability changes.
  */
 interface IAGnssRil {
+    @export(name="", value_prefix="AGPS_SETID_TYPE_")
     enum SetIDType : uint8_t {
         NONE    = 0,
         IMSI    = 1,
         MSISDM  = 2
     };
 
+    @export(name="", value_prefix="AGPS_RIL_NETWORK_TYPE_")
     enum NetworkType : uint8_t {
         MOBILE  = 0,
         WIFI    = 1,
@@ -41,6 +43,7 @@
         WIMAX   = 6,
     };
 
+    @export(name="", value_prefix="AGPS_REF_LOCATION_TYPE_")
     enum AGnssRefLocationType : uint8_t {
         GSM_CELLID   = 1,
         UMTS_CELLID  = 2,
diff --git a/gnss/1.0/IAGnssRilCallback.hal b/gnss/1.0/IAGnssRilCallback.hal
index ba29bd0..2d64e54 100644
--- a/gnss/1.0/IAGnssRilCallback.hal
+++ b/gnss/1.0/IAGnssRilCallback.hal
@@ -22,6 +22,7 @@
  */
 interface IAGnssRilCallback {
     /* Kinds of SET ID that can be requested */
+    @export(name="", value_prefix="AGPS_RIL_REQUEST_SETID_")
     enum ID : uint32_t {
         IMSI    = 1 << 0L,
         MSISDN  = 1 << 1L,
diff --git a/gnss/1.0/IGnss.hal b/gnss/1.0/IGnss.hal
index 24a5371..5cde79e 100644
--- a/gnss/1.0/IGnss.hal
+++ b/gnss/1.0/IGnss.hal
@@ -28,9 +28,10 @@
 import IGnssNi;
 import IGnssXtra;
 
-/* Represents the standard GNSS interface. */
+/* Represents the standard GNSS (Global Navigation Satellite System) interface. */
 interface IGnss {
     /* Requested operational mode for GNSS operation. */
+    @export(name="", value_prefix="GPS_POSITION_MODE_")
     enum GnssPositionMode : uint8_t {
         /** Mode for running GNSS standalone (no assistance). */
         STANDALONE  = 0,
@@ -44,6 +45,7 @@
     };
 
     /* Requested recurrence mode for GNSS operation. */
+    @export(name="", value_prefix="GPS_POSITION_")
     enum GnssPositionRecurrence : uint32_t {
         /** Receive GNSS fixes on a recurring basis at a specified period. */
         RECURRENCE_PERIODIC  = 0,
@@ -55,6 +57,7 @@
      * Flags used to specify which aiding data to delete when calling
      * deleteAidingData().
      */
+    @export(name="", value_prefix="GPS_")
     enum GnssAidingData : uint16_t {
         DELETE_EPHEMERIS    = 0x0001,
         DELETE_ALMANAC      = 0x0002,
diff --git a/gnss/1.0/IGnssBatching.hal b/gnss/1.0/IGnssBatching.hal
index 4f0695d..4d5affa 100644
--- a/gnss/1.0/IGnssBatching.hal
+++ b/gnss/1.0/IGnssBatching.hal
@@ -42,6 +42,7 @@
     /*
      * Enum which holds the bit masks for batching control.
      */
+    @export(name="", value_prefix="FLP_BATCH_")
     enum Flag : uint8_t {
         /*
          * If this flag is set, the hardware implementation
diff --git a/gnss/1.0/IGnssCallback.hal b/gnss/1.0/IGnssCallback.hal
index eb66d78..1fe48f1 100644
--- a/gnss/1.0/IGnssCallback.hal
+++ b/gnss/1.0/IGnssCallback.hal
@@ -23,6 +23,7 @@
  */
 interface IGnssCallback {
     /* Flags for the gnssSetCapabilities callback. */
+    @export(name="", value_prefix="GPS_CAPABILITY_")
     enum Capabilities : uint32_t {
         /*
          * GNSS HAL schedules fixes for RECURRENCE_PERIODIC mode.
@@ -47,6 +48,7 @@
     };
 
     /* GNSS status event values. */
+    @export(name="", value_prefix="GPS_STATUS_")
     enum GnssStatusValue : uint8_t {
         /** GNSS status unknown. */
         NONE           = 0,
@@ -63,6 +65,7 @@
     /*
      * Flags that indicate information about the satellite
      */
+    @export(name="", value_prefix="GNSS_SV_FLAGS_")
     enum GnssSvFlags : uint8_t {
         NONE                  = 0,
         HAS_EPHEMERIS_DATA    = 1 << 0,
diff --git a/gnss/1.0/IGnssGeofenceCallback.hal b/gnss/1.0/IGnssGeofenceCallback.hal
index 5c70c5e..722317e 100644
--- a/gnss/1.0/IGnssGeofenceCallback.hal
+++ b/gnss/1.0/IGnssGeofenceCallback.hal
@@ -91,17 +91,20 @@
  */
 
 interface IGnssGeofenceCallback {
+    @export(name="", value_prefix="GPS_GEOFENCE_")
     enum GeofenceTransition : int32_t {
         ENTERED   = (1 << 0L),
         EXITED    = (1 << 1L),
         UNCERTAIN = (1 << 2L),
     };
 
+    @export(name="", value_prefix="GPS_GEOFENCE_")
     enum GeofenceAvailability : int32_t {
         UNAVAILABLE = (1 << 0L),
         AVAILABLE   = (1 << 1L),
     };
 
+    @export(name="", value_prefix="GPS_GEOFENCE_")
     enum GeofenceStatus : int32_t {
         OPERATION_SUCCESS        = 0,
         ERROR_TOO_MANY_GEOFENCES = -100,
diff --git a/gnss/1.0/IGnssMeasurement.hal b/gnss/1.0/IGnssMeasurement.hal
index 5174273..8329442 100644
--- a/gnss/1.0/IGnssMeasurement.hal
+++ b/gnss/1.0/IGnssMeasurement.hal
@@ -22,6 +22,7 @@
  * Extended interface for GNSS Measurements support.
  */
 interface IGnssMeasurement {
+    @export(name="", value_prefix="GPS_MEASUREMENT_")
     enum GnssMeasurementStatus : int32_t {
         SUCCESS = 0,
         ERROR_ALREADY_INIT = -100,
diff --git a/gnss/1.0/IGnssMeasurementCallback.hal b/gnss/1.0/IGnssMeasurementCallback.hal
index de640ae..472583a 100644
--- a/gnss/1.0/IGnssMeasurementCallback.hal
+++ b/gnss/1.0/IGnssMeasurementCallback.hal
@@ -21,6 +21,7 @@
     /*
      * Flags to indicate what fields in GnssClock are valid.
      */
+    @export(name="", value_prefix="GNSS_CLOCK_")
     enum GnssClockFlags : uint16_t {
         /** A valid 'leap second' is stored in the data structure. */
         HAS_LEAP_SECOND        = 1 << 0,
@@ -41,6 +42,7 @@
     /*
      * Flags to indicate what fields in GnssMeasurement are valid.
      */
+    @export(name="", value_prefix="GNSS_MEASUREMENT_")
     enum GnssMeasurementFlags : uint32_t {
         /** A valid 'snr' is stored in the data structure. */
         HAS_SNR                        = 1 << 0,
@@ -60,6 +62,7 @@
      * Enumeration of available values for the GNSS Measurement's multipath
      * indicator.
      */
+    @export(name="", value_prefix="GNSS_MULTIPATH_")
     enum GnssMultipathIndicator : uint8_t {
         /** The indicator is not available or unknown. */
         INDICATOR_UNKNOWN      = 0,
@@ -82,6 +85,7 @@
      * If GNSS is still searching for a satellite, the corresponding state must be
      * set to STATE_UNKNOWN(0).
      */
+    @export(name="", value_prefix="GNSS_MEASUREMENT_")
     enum GnssMeasurementState : uint32_t {
         STATE_UNKNOWN                = 0,
         STATE_CODE_LOCK              = 1 << 0,
@@ -105,6 +109,7 @@
     /*
      * Flags indicating the Accumulated Delta Range's states.
      */
+    @export(name="", value_prefix="GNSS_")
     enum GnssAccumulatedDeltaRangeState : uint16_t {
         ADR_STATE_UNKNOWN    = 0,
         ADR_STATE_VALID      = 1 << 0,
diff --git a/gnss/1.0/IGnssNavigationMessage.hal b/gnss/1.0/IGnssNavigationMessage.hal
index 11f2096..ddd9169 100644
--- a/gnss/1.0/IGnssNavigationMessage.hal
+++ b/gnss/1.0/IGnssNavigationMessage.hal
@@ -22,6 +22,7 @@
  * Extended interface for GNSS navigation message reporting support.
  */
 interface IGnssNavigationMessage {
+    @export(name="", value_prefix="GPS_NAVIGATION_MESSAGE_")
     enum GnssNavigationMessageStatus : int32_t {
         SUCCESS = 0,
         ERROR_ALREADY_INIT = -100,
diff --git a/gnss/1.0/IGnssNavigationMessageCallback.hal b/gnss/1.0/IGnssNavigationMessageCallback.hal
index 0cffa67..2e6b853 100644
--- a/gnss/1.0/IGnssNavigationMessageCallback.hal
+++ b/gnss/1.0/IGnssNavigationMessageCallback.hal
@@ -25,6 +25,7 @@
      * For convenience, first byte is the GnssConstellationType on which that signal
      * is typically transmitted.
      */
+    @export(name="", value_prefix="GNSS_NAVIGATION_MESSAGE_TYPE_")
     enum GnssNavigationMessageType : int16_t {
         UNKNOWN    = 0,
         /** GNSS L1 C/A message contained in the structure.  */
@@ -56,6 +57,7 @@
      * No need to send any navigation message that contains words with parity error
      * and cannot be corrected.
      */
+    @export(name="navigation_message_status", value_prefix="NAV_MESSAGE_STATUS_")
     enum NavigationMessageStatus : uint16_t {
         PARITY_PASSED  = (1 << 0),
         PARITY_REBUILT = (1 << 1),
diff --git a/gnss/1.0/IGnssNiCallback.hal b/gnss/1.0/IGnssNiCallback.hal
index a7abad9..c5fb223 100644
--- a/gnss/1.0/IGnssNiCallback.hal
+++ b/gnss/1.0/IGnssNiCallback.hal
@@ -21,6 +21,7 @@
     /*
      * GnssNiType constants
      */
+    @export(name="", value_prefix="GPS_NI_TYPE_")
     enum GnssNiType : uint8_t {
         VOICE           = 1,
         UMTS_SUPL       = 2,
@@ -30,6 +31,7 @@
     /*
      * GnssNiNotifyFlags constants
      */
+    @export(name="", value_prefix="GPS_NI_")
     enum GnssNiNotifyFlags : uint32_t {
         /** NI requires notification */
         NEED_NOTIFY      = 0x0001,
@@ -43,6 +45,7 @@
      * GNSS NI responses, used to define the response in
      * NI structures
      */
+    @export(name="", value_prefix="GPS_NI_")
     enum GnssUserResponseType : uint8_t {
         RESPONSE_ACCEPT  = 1,
         RESPONSE_DENY    = 2,
@@ -52,6 +55,7 @@
     /*
      * NI data encoding scheme
      */
+    @export(name="", value_prefix="GPS_")
     enum GnssNiEncodingType : int32_t {
         ENC_NONE              = 0,
         ENC_SUPL_GSM_DEFAULT  = 1,
diff --git a/gnss/1.0/types.hal b/gnss/1.0/types.hal
index 2721d44..d5e0e9b 100644
--- a/gnss/1.0/types.hal
+++ b/gnss/1.0/types.hal
@@ -16,6 +16,7 @@
 
 package android.hardware.gnss@1.0;
 
+@export(name="", value_prefix="GNSS_MAX_")
 enum GnssMax : uint32_t {
 /** Maximum number of SVs for gnssSvStatusCb(). */
     SVS_COUNT = 64,
@@ -27,6 +28,8 @@
 /*
  * Constellation type of GnssSvInfo
  */
+
+@export(name="", value_prefix="GNSS_CONSTELLATION_")
 enum GnssConstellationType : uint8_t {
     UNKNOWN = 0,
     GPS     = 1,
@@ -38,6 +41,7 @@
 };
 
 /** Bit mask to indicate which values are valid in a GnssLocation object. */
+@export(name="", value_prefix="GPS_LOCATION_")
 enum GnssLocationFlags : uint16_t {
     /** GnssLocation has valid latitude and longitude. */
     HAS_LAT_LONG              = 0x0001,
diff --git a/update-base-files.sh b/update-base-files.sh
index e2331f5..1eb6b51 100755
--- a/update-base-files.sh
+++ b/update-base-files.sh
@@ -25,6 +25,9 @@
 hidl-gen $options \
          -o hardware/libhardware/include/hardware/nfc-base.h \
          android.hardware.nfc@1.0
+hidl-gen $options \
+         -o hardware/libhardware/include/hardware/gnss-base.h \
+         android.hardware.gnss@1.0
 
 # system/core
 hidl-gen $options \