diff --git a/android_4.x-5.x/Android.mk b/android_4.x-5.x/Android.mk
index 6c141fd..abe90b3 100644
--- a/android_4.x-5.x/Android.mk
+++ b/android_4.x-5.x/Android.mk
@@ -1,4 +1,5 @@
 ifeq (1,$(strip $(shell expr $(PLATFORM_SDK_VERSION) \>= 14)))
+ifeq ($(VIPER4ANDROID_FOLDER),android_4.x-5.x)
 
 LOCAL_PATH:= $(call my-dir)
 
@@ -58,3 +59,4 @@ include $(BUILD_PREBUILT)
 endif
 
 endif
+endif
diff --git a/android_4.x/Android.mk b/android_4.x/Android.mk
new file mode 100644
index 0000000..be341d6
--- /dev/null
+++ b/android_4.x/Android.mk
@@ -0,0 +1,62 @@
+ifeq (1,$(strip $(shell expr $(PLATFORM_SDK_VERSION) \>= 14)))
+ifneq ($(VIPER4ANDROID_FOLDER),android_4.x-5.x)
+
+LOCAL_PATH:= $(call my-dir)
+
+#ViPER4Android
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_SRC_FILES := $(call all-java-files-under, src)
+
+#LOCAL_RESOURCE_DIR += $(LOCAL_PATH)/res
+LOCAL_AAPT_FLAGS := --auto-add-overlay
+
+LOCAL_PACKAGE_NAME := ViPER4Android
+LOCAL_CERTIFICATE := platform
+
+LOCAL_PROGUARD_FLAG_FILES := proguard.flags
+
+LOCAL_STATIC_JAVA_LIBRARIES := \
+    v4a_RootTools \
+    v4a_android-support
+
+ifeq (1,$(strip $(shell expr $(PLATFORM_SDK_VERSION) \>= 23)))
+LOCAL_STATIC_JAVA_LIBRARIES += \
+    org.apache.http.legacy
+endif
+
+include $(BUILD_PACKAGE)
+
+#libs
+include $(CLEAR_VARS)
+
+LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES := \
+    v4a_RootTools:libs/RootTools-4.2.jar \
+    v4a_android-support:libs/android-support-v13.jar
+
+include $(BUILD_MULTI_PREBUILT)
+
+#soundfx lib
+ifneq ($(filter NEON NEON_HQ NEON_SQ NOVFP VFP X86,$(VIPER4ANDROID_MODE)),)
+
+include $(CLEAR_VARS)
+
+ifeq (1,$(strip $(shell expr $(PLATFORM_SDK_VERSION) \>= 18)))
+    LOCAL_V4A_LIB := libv4a_fx_jb
+else
+    LOCAL_V4A_LIB := libv4a_fx_ics
+endif
+
+LOCAL_MODULE := libv4a_fx_ics
+LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_CLASS := SHARED_LIBRARIES
+LOCAL_MODULE_PATH := $(TARGET_OUT)/lib/soundfx
+LOCAL_MODULE_SUFFIX := .so
+LOCAL_SRC_FILES := assets/$(LOCAL_V4A_LIB)_$(VIPER4ANDROID_MODE).so
+include $(BUILD_PREBUILT)
+endif
+
+endif
+endif