I am getting errors while compiling my native.cpp file in Eclipse ADT/NDK.
While compiling the following lines of code
FileStorage storage(nativepath, FileStorage::WRITE);
storage << "img" << mat;
storage.release();
The errors are
D:/androidworkspace/Augmented-Reality//obj/local/arm64-v8a/objs/ndksetup/native.o:
In function
Java_com_shahrukh_AugmentedReality_CAMShiftDetection_savemat(_JNIEnv*,
_jobject*, long long, _jstring*)': D:\androidworkspace\Augmented-Reality/jni/native.cpp:14: undefined
reference to
cv::FileStorage::FileStorage(std::string const&, int,
std::string const&)'
D:/androidworkspace/Augmented-Reality//obj/local/arm64-v8a/objs/ndksetup/native.o:
In function operator<<':
D:/android-development/OpenCV-2.4.10-android-sdk/OpenCV-2.4.10-android-sdk/sdk/native/jni/include/opencv2/core/operations.hpp:2923:
undefined reference to
cv::operator<<(cv::FileStorage&, std::string
const&)'
D:/androidworkspace/Augmented-Reality//obj/local/arm64-v8a/objs/ndksetup/native.o:
In function operator<< <cv::Mat>':
D:/android-development/OpenCV-2.4.10-android-sdk/OpenCV-2.4.10-android-sdk/sdk/native/jni/include/opencv2/core/operations.hpp:2914:
undefined reference to
cv::write(cv::FileStorage&, std::string
const&, cv::Mat const&)'
D:/androidworkspace/Augmented-Reality//obj/local/arm64-v8a/objs/ndksetup/native.o:
In function
Java_com_shahrukh_AugmentedReality_CAMShiftDetection_savemat(_JNIEnv*,
_jobject*, long long, _jstring*)': D:\androidworkspace\Augmented-Reality/jni/native.cpp:16: undefined
reference to
cv::FileStorage::release()'
D:\androidworkspace\Augmented-Reality/jni/native.cpp:18: undefined
reference to cv::FileStorage::~FileStorage()'
D:/androidworkspace/Augmented-Reality//obj/local/arm64-v8a/objs/ndksetup/native.o:
In function
operator<< <cv::mat>':
D:/android-development/OpenCV-2.4.10-android-sdk/OpenCV-2.4.10-android-sdk/sdk/native/jni/include/opencv2/core/operations.hpp:2913:
undefined reference to cv::Exception::Exception(int, std::string
const&, std::string const&, std::string const&, int)'
D:/android-development/OpenCV-2.4.10-android-sdk/OpenCV-2.4.10-android-sdk/sdk/native/jni/include/opencv2/core/operations.hpp:2913:
undefined reference to
cv::error(cv::Exception const&)'
D:/android-development/OpenCV-2.4.10-android-sdk/OpenCV-2.4.10-android-sdk/sdk/native/jni/include/opencv2/core/operations.hpp:2913:
undefined reference to cv::Exception::~Exception()'
D:/android-development/OpenCV-2.4.10-android-sdk/OpenCV-2.4.10-android-sdk/sdk/native/jni/include/opencv2/core/operations.hpp:2913:
undefined reference to
cv::Exception::~Exception()'
D:/androidworkspace/Augmented-Reality//obj/local/arm64-v8a/objs/ndksetup/native.o:
In function
Java_com_shahrukh_AugmentedReality_CAMShiftDetection_savemat(_JNIEnv*,
_jobject*, long long, _jstring*)': D:\androidworkspace\Augmented-Reality/jni/native.cpp:18: undefined
reference to
cv::FileStorage::~FileStorage()' collect2.exe: error: ld
returned 1 exit status make.exe: *
[D:/androidworkspace/Augmented-Reality//obj/local/arm64-v8a/libndksetup.so]
Error 1
This is my native.cpp
file
#include <jni.h>
#include <stdio.h>
#include <string.h>
#include <android/log.h>
#include <opencv2/core/core.hpp>
using namespace cv;
JNIEXPORT void Java_com_shahrukh_AugmentedReality_CAMShiftDetection_savemat(JNIEnv *env, jobject obj,jlong addrmat, jstring path)
{
const char *nativepath = env->GetStringUTFChars(path, 0);
Mat& mat = *(Mat*)addrmat;
FileStorage storage(nativepath, FileStorage::WRITE);
storage << "img" << mat;
storage.release();
env->ReleaseStringUTFChars(path, nativepath);
}
This is my Android.mk
File
LOCAL_PATH := $(call my-dir)
export OPENCV_PACKAGE_DIR = D:/android-development/OpenCV-2.4.10-android-sdk/OpenCV-2.4.10-android-sdk/sdk/native/jni
include $(CLEAR_VARS)
OPENCV_CAMERA_MODULES:=off
include $(OPENCV_PACKAGE_DIR)/OpenCV.mk
LOCAL_LDLIBS := -llog -ldl
LOCAL_MODULE := ndksetup
LOCAL_SRC_FILES := native.cpp
include $(BUILD_SHARED_LIBRARY)
This is my Application.mk
APP_STL := gnustl_static
APP_CPPFLAGS := -frtti -fexceptions
APP_ABI := all