diff --git a/policy_hal/Android.mk b/policy_hal/Android.mk
index 874b3dd..58f73d3 100644
--- a/policy_hal/Android.mk
+++ b/policy_hal/Android.mk
@@ -27,6 +27,18 @@
 LOCAL_STATIC_LIBRARIES := \
     libmedia_helper \
 
+ifeq ($(strip $(AUDIO_FEATURE_ENABLED_EXTN_FORMATS)),true)
+LOCAL_CFLAGS += -DAUDIO_EXTN_FORMATS_ENABLED
+endif
+
+ifeq ($(strip $(AUDIO_FEATURE_ENABLED_HDMI_SPK)),true)
+LOCAL_CFLAGS += -DAUDIO_EXTN_HDMI_SPK_ENABLED
+endif
+
+ifeq ($(strip $(AUDIO_FEATURE_ENABLED_PROXY_DEVICE)),true)
+LOCAL_CFLAGS += -DAUDIO_EXTN_AFE_PROXY_ENABLED
+endif
+
 LOCAL_MODULE := libaudiopolicymanager
 
 include $(BUILD_SHARED_LIBRARY)