android plugin developemnt

I am developing Unity Android plugin to use the java function from c#.
When the apk is loaded to the handset, the error mesage is as follows :

09-30 21:55:44.784: INFO/dalvikvm(7122): Unable to dlopen(/data/data/com.nhn.JavaPluginTest/lib/libduelgojava.so): Cannot load library:
09-30 21:55:44.784: DEBUG/dalvikvm(7122): Trying to load lib /data/data/com.nhn.JavaPluginTest/lib/libduelgojava.so 0x47d1ff80
09-30 21:55:44.784: INFO/dalvikvm(7122): Unable to dlopen(/data/data/com.nhn.JavaPluginTest/lib/libduelgojava.so): Cannot load library:

I check the file libduelgojava.so is in "/data/data/com.nhn.JavaPluginTest" using adb command.
And makefile is as follows:
#############################################
# Android Makefile
#############################################

HOME = /home/samchung
JAVA_HOME = $(HOME)/jdk1.6

# Tool chain
TOOLCHAIN_ROOT = $(HOME)/arm-2010q1

# Target OS
SYS_ROOT = $(HOME)/tmp/android/system
SYS_DEV = $(HOME)/mydroid

CROSS_COMPILE = $(TOOLCHAIN_ROOT)/bin/arm-none-linux-gnueabi-
LIBDIR =$(TOOLCHAIN_ROOT)/lib/gcc/arm-none-linux-gnueabi/4.4.1

LIBRARIES =$(LIBDIR)/libgcc.a

#CC = $(CROSS_COMPILE)gcc-4.4.1
CC = $(CROSS_COMPILE)gcc
#CC = gcc


BASE=$(SYS_DEV)/frameworks/base
LIBC=$(SYS_DEV)/bionic/libc
LIBM=$(SYS_DEV)/bionic/libm
TC=$(SYS_DEV)/prebuilt/linux-x86/toolchain/arm-eabi-4.2.1/lib/gcc/arm-eabi/4.2.1/install-tools
KERNEL = $(LIBC)/kernel

INCLUDES = -I$(LIBC)/include -I$(LIBC)/arch-arm/include \
-I$(LIBC)/kernel/arch-arm/include \
-I$(LIBM)/include -I$(BASE)/include -I$(TC)/include \
-I$(JAVA_HOME)/include \
-I$(KERNEL)/common -I$(KERNEL)/arch-arm \
-I$(SYS_DEV)/frameworks/base/opengl/include \
-I$(HOME)/AndroidNDK/android-ndk-r4b/build/platforms/android-8/arch-arm/usr/include

#
# Linker
#
LINKER = $(CROSS_COMPILE)ld

# Libraries
LIB_PATHS = -rpath /system/lib -L. \
-rpath $(SYS_ROOT)/lib -L$(SYS_ROOT)/lib


CFLAGS = -g -Wall -O2 -ffast-math -nostdinc #-DWMODE=0
LFLAGS = -lc -lm
ALFLAGS=--dynamic-linker=/system/bin/linker -nostdlib $(LFLAGS)

NASM = nasm

.SUFFIXES: .asm .cpp

all: lib


.asm.o:
$(NASM) -f elf -o $@ $<

.c.o:
@echo
$(CC) -fpic -c $(CFLAGS) $(MACROS) $(INCLUDES) $<
jni_comp:
$(CC) -fpic -c $(CFLAGS) $(MACROS) $(INCLUDES) -I$(JAVA_HOME)/include -I$(JAVA_HOME)/include/linux jni_duelgo.cpp

lib: jni_comp
$(LINKER) $(ALFLAGS) $(LIB_PATHS) $(LIBS) -shared -o ./libduelgojava.so jni_duelgo.o


how can i fix it ?