Include a prebuilt library

Hi,
I have a library ( libjsoncpp.a ), which I want to be added to an android project. My Android.mk file looks like this:

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE := cocos2dcpp_shared

LOCAL_MODULE_FILENAME := libcocos2dcpp

LOCAL_SRC_FILES := hellocpp/main.cpp …/…/Classes/AppDelegate.cpp …/…/Classes/HelloWorldScene.cpp

LOCAL_C_INCLUDES := $(LOCAL_PATH)/…/…/Classes
LOCAL_WHOLE_STATIC_LIBRARIES := cocos2dx_static
LOCAL_WHOLE_STATIC_LIBRARIES = cocosdenshion_static
LOCAL_WHOLE_STATIC_LIBRARIES
= box2d_static
LOCAL_WHOLE_STATIC_LIBRARIES = cocos_extension_static
LOCAL_WHOLE_STATIC_LIBRARIES
= cocos_network_static

include $(BUILD_SHARED_LIBRARY)

$(call import-module,2d)
$(call import-module,audio/android)
$(call import-module,Box2D)
$(call import-module,extensions)
$(call import-module,network)

The library’s directory is /cocos2d-x/external/json/lib .
The Android.mk file’s directory is /cocos2d-x/projects/gb/proj.android/jni

What changes must be made to the Android.mk file in order to get the json library added?