Android Fb2png 기본 컴파일 문제

jni를 사용하여 android fb2png 네이티브 소스 코드를 컴파일하려고했습니다. 그러나 나는 다음과 같은 문제에 직면하고있다. 나는 짚고 넘어졌지만 해결책을 찾지 못했습니다. 도와주세요. ndk 문제가 추가되었습니다.Android Fb2png 기본 컴파일 문제

** /cygdrive/d/Android_NDK/android-ndk-r5/ndk-build 
ompile thumb : fb2png <= fb2png.c 
ompile thumb : fb2png <= img_process.c 
ompile thumb : fb2png <= fb.c 
xecutable  : fb2png 
:/RAJESH-ANDROID/Rajesh-workspace/ZT/obj/local/armeabi/objs/fb2png/img_process.o: In function `save_png': 
:/RAJESH-ANDROID/Rajesh-workspace/ZT/jni/img_process.c:182: undefined reference to `png_create_write_struct' 
:/RAJESH-ANDROID/Rajesh-workspace/ZT/jni/img_process.c:188: undefined reference to `png_create_info_struct' 
:/RAJESH-ANDROID/Rajesh-workspace/ZT/jni/img_process.c:192: undefined reference to `png_set_write_fn' 
:/RAJESH-ANDROID/Rajesh-workspace/ZT/jni/img_process.c:193: undefined reference to `png_set_IHDR' 
:/RAJESH-ANDROID/Rajesh-workspace/ZT/jni/img_process.c:208: undefined reference to `png_set_bKGD' 
:/RAJESH-ANDROID/Rajesh-workspace/ZT/jni/img_process.c:209: undefined reference to `png_write_info' 
:/RAJESH-ANDROID/Rajesh-workspace/ZT/jni/img_process.c:211: undefined reference to `png_write_image' 
:/RAJESH-ANDROID/Rajesh-workspace/ZT/jni/img_process.c:212: undefined reference to `png_write_end' 
:/RAJESH-ANDROID/Rajesh-workspace/ZT/jni/img_process.c:214: undefined reference to `png_destroy_write_struct' 
:/RAJESH-ANDROID/Rajesh-workspace/ZT/obj/local/armeabi/objs/fb2png/img_process.o: In function `stdio_write_func': 
:/RAJESH-ANDROID/Rajesh-workspace/ZT/jni/img_process.c:132: undefined reference to `png_get_io_ptr' 
ollect2: ld returned 1 exit status 
ake: *** [/cygdrive/D/RAJESH-ANDROID/Rajesh-workspace/ZT/obj/local/armeabi/fb2png] Error 1 **

http://code.google.com/p/android-fb2png/source/browse/

내의 libpng 소스 문제 . My Project