diff --git a/Android.mk b/Android.mk
index 5537775..94b2cd6 100644
--- a/Android.mk
+++ b/Android.mk
@@ -571,23 +571,27 @@
 LOCAL_MODULE := libaosprecovery
 LOCAL_MODULE_TAGS := eng optional
 LOCAL_CFLAGS := -std=gnu++0x
-LOCAL_SRC_FILES := adb_install.cpp asn1_decoder.cpp legacy_property_service.cpp set_metadata.cpp tw_atomic.cpp
-LOCAL_SHARED_LIBRARIES += libc liblog libcutils libmtdutils libfusesideload libselinux
+LOCAL_SRC_FILES := adb_install.cpp asn1_decoder.cpp legacy_property_service.cpp set_metadata.cpp tw_atomic.cpp installcommand.cpp
+LOCAL_SHARED_LIBRARIES += libc liblog libcutils libmtdutils libfusesideload libselinux libminzip
+LOCAL_CFLAGS += -DRECOVERY_API_VERSION=$(RECOVERY_API_VERSION)
 ifeq ($(shell test $(PLATFORM_SDK_VERSION) -lt 23; echo $$?),0)
     LOCAL_SHARED_LIBRARIES += libstdc++ libstlport
-    LOCAL_C_INCLUDES := bionic external/stlport/stlport
+    LOCAL_C_INCLUDES += bionic external/stlport/stlport
 else
     LOCAL_SHARED_LIBRARIES += libc++
 endif
 ifeq ($(shell test $(PLATFORM_SDK_VERSION) -lt 24; echo $$?),0)
     LOCAL_SHARED_LIBRARIES += libmincrypttwrp
-    LOCAL_C_INCLUDES := $(LOCAL_PATH)/libmincrypt/includes
+    LOCAL_C_INCLUDES += $(LOCAL_PATH)/libmincrypt/includes
     LOCAL_SRC_FILES += verifier24/verifier.cpp
     LOCAL_CFLAGS += -DUSE_OLD_VERIFIER
 else
-    LOCAL_SHARED_LIBRARIES += libcrypto
+    LOCAL_SHARED_LIBRARIES += libcrypto libbase
     LOCAL_SRC_FILES += verifier.cpp
 endif
+ifeq ($(AB_OTA_UPDATER),true)
+    LOCAL_CFLAGS += -DAB_OTA_UPDATER=1
+endif
 
 ifneq ($(BOARD_RECOVERY_BLDRMSG_OFFSET),)
     LOCAL_CFLAGS += -DBOARD_RECOVERY_BLDRMSG_OFFSET=$(BOARD_RECOVERY_BLDRMSG_OFFSET)