new to android. working on android jni(ndk).done some sample projects based on prebuilt library, having same problems my androi.mk is LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE :=hello-jni LOCAL_SRC_FILE:=hello-jni.c LOCAL_SHARED_LIBRARY := ndk include $(BUILD_SHARED_LIBRARY) include $(CLEAR_VARS) LOCAL_MODULE := ndk NDK_MODULE_PATH := $(LOCAL_PATH) LOCAL_SRC_FILES := libndk.so include $(PREBUILT_SHARED_LIBRARY) hello-jni.c calls functions from libndk.so(ARM lib.) this project run successfully several times but when i restarted the eclipse and again run the project from eclipse. emulator load the project. but having the problem calling funtions from shared library. it stopped unexpectedly. when i debug in logcat view it show unsatisfied linker error. please help me out this problem. attached the project also my email address is firstname.lastname@example.org if you want some additional information then you tell me. thanks.