Android Studio .so파일 만드는법 질문드립니다

Question

안녕하세요

.so파일을 추출하고싶은데 안돼서 질문드립니다

mainJNILib.cpp를 .so파일로 만들고싶은데요

cygwin을 이용해서 ndk build를 해도 생성이 안됩니다 ㅠ

다른 .so파일들은 생성이 되는데 mainJNILib.cpp만 .so파일이 안되네요

검색을 통해 여러 방법으로 해봤는데 jni에 익숙하지 않아서인지 잘 안되네요 ㅠㅠ

도움 부탁드리겠습니다

감사합니다

Android.mk

LOCAL_PATH := $(call my-dir)

#Prebuilt libraries
include $(CLEAR_VARS)
LOCAL_MODULE := aospPdfium

ARCH_PATH = $(TARGET_ARCH_ABI)
ifeq ($(TARGET_ARCH_ABI), armeabi-v7a)
    ARCH_PATH = armeabi
endif

ifeq ($(TARGET_ARCH_ABI), arm64-v8a)
    ARCH_PATH = arm64
endif

LOCAL_SRC_FILES := $(LOCAL_PATH)/lib/$(ARCH_PATH)/libmodpdfium.so

include $(PREBUILT_SHARED_LIBRARY)

#libmodft2
include $(CLEAR_VARS)
LOCAL_MODULE := libmodft2

LOCAL_SRC_FILES := $(LOCAL_PATH)/lib/$(ARCH_PATH)/libmodft2.so

include $(PREBUILT_SHARED_LIBRARY)

#libmodpng
include $(CLEAR_VARS)
LOCAL_MODULE := libmodpng

LOCAL_SRC_FILES := $(LOCAL_PATH)/lib/$(ARCH_PATH)/libmodpng.so

include $(PREBUILT_SHARED_LIBRARY)

#Main JNI library
include $(CLEAR_VARS)
LOCAL_MODULE := jniPdfium

LOCAL_CFLAGS += -DHAVE_PTHREADS
LOCAL_C_INCLUDES += $(LOCAL_PATH)/include
LOCAL_SHARED_LIBRARIES += aospPdfium
LOCAL_LDLIBS += -llog -landroid -ljnigraphics

LOCAL_SRC_FILES :=  $(LOCAL_PATH)/src/mainJNILib.cpp

include $(BUILD_SHARED_LIBRARY)