Android ndk build error.opencv2/core/core.hpp:没有这样的文件或目录

我在Android中使用OpenCV非自由模块时遇到问题。我读了这个教程

但在运行ndk build之后，它会显示以下错误

guru@guru-Aspire-5738:~/Android/OpenCVWorkspace/sift_opencv_android/jni$ ~/Android/android-ndk-r9/ndk-build 

Install        : libopencv_java.so => libs/armeabi-v7a/libopencv_java.so  
Install        : libnonfree.so => libs/armeabi-v7a/libnonfree.so  
Compile++ thumb  : test_sift <= test_sift.cpp
/home/guru/Android/OpenCVWorkspace/sift_opencv_android/jni/test_sift.cpp:2:33: fatal error: opencv2/core/core.hpp: No such file or directory
compilation terminated.  
make: ***[/home/guru/Android/OpenCVWorkspace/sift_opencv_android/obj/local/armeabi-v7a/objs/test_sift/test_sift.o] Error 1

---

请帮忙。

我想你忘了包括“opencv2/core/core.hpp”。以下是你的简历：

LOCAL_C_INCLUDE:= /home/guru/Android/OpenCV-2.4.6-android-sdk/sdk/native/jni/include

---

将“opencv2/core/core.hpp”添加到

LOCAL\u\u INCLUDE

我不明白。“opencv2/core/core.hpp”已经出现在代码#include中。这怎么可能是公认的答案？或者它是如此明显，而我却没有看到？

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE    := sift_prebuilt
LOCAL_SRC_FILES := libnonfree.so
include $(PREBUILT_SHARED_LIBRARY)



include $(CLEAR_VARS)
LOCAL_MODULE    := opencv_java_prebuilt
LOCAL_SRC_FILES := libopencv_java.so
include $(PREBUILT_SHARED_LIBRARY)


LOCAL_C_INCLUDE:= /home/guru/Android/OpenCV-2.4.6-android-sdk/sdk/native/jni/include
LOCAL_MODULE    := test_sift 
LOCAL_LDLIBS +=  -llog -ldl
LOCAL_SHARED_LIBRARIES := sift_prebuilt opencv_java_prebuilt
LOCAL_SRC_FILES := test_sift.cpp

include $(BUILD_EXECUTABLE)

LOCAL_C_INCLUDE:= /home/guru/Android/OpenCV-2.4.6-android-sdk/sdk/native/jni/include