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I am trying to executing cross compiled (for RISCV) sample c++ program.but i am getting error

I have cross compiled sample c++ program for riscv,and i am trying to executing in riscv-linux.Here riscv-linux there is now facility to display image as a result,so i am generating a result image matrix as a Text file and i am planing to see result in X86 architecture.but i am getting error before generating text file.

Makefile:-

CXX =riscv64-unknown-linux-gnu-g++ CXXFLAGS += -c -Wall $(shell pkg-config --cflags /home/billa/Downloads/opencv-3.4.2/platforms/linux/riscv_build/install/lib/pkgconfig/opencv.pc) LDFLAGS += $(shell pkg-config --libs --static /home/billa/Downloads/opencv-3.4.2/platforms/linux/riscv_build/install/lib/pkgconfig/opencv.pc) all: example example: example.o; $(CXX) $< -o [email protected] $(LDFLAGS) %.o: %.cpp; $(CXX) $< -o [email protected] $(CXXFLAGS) clean: ; rm -f example.o example

Error: -

BusyBox v1.26.2 (2018-06-27 09:49:37 IST) built-in shell (ash)

/opencv/example

/opencv/example Built with OpenCV 3.4.2 VIDEOIO ERROR: V4L: can't open camera by index 0 No capture

My Sample c++ Program:

include "opencv2/core.hpp"

include "opencv2/imgproc.hpp"

include "opencv2/highgui.hpp"

include "opencv2/videoio.hpp"

include <iostream>

include <fstream>

using namespace cv; using namespace std;

void drawText(Mat & image);

int main() { cout << "Built with OpenCV " << CV_VERSION << endl; Mat image; VideoCapture capture; capture.open(0); if(capture.isOpened()) { cout << "Capture is opened" << endl; for(;;) { capture >> image; if(image.empty()) break; drawText(image); imshow("Sample", image); if(waitKey(10) >= 0) break; } } else { cout << "No capture" << endl; image = Mat::zeros(480, 640, CV_8UC1); drawText(image); //cout << image<<endl; imshow("sample",="" image);<="" p="">

FileStorage fs("myfile.txt",FileStorage::WRITE); fs << "mat1" << image;

return 0;

} }

void drawText(Mat & image) { putText(image, "Hello Welcome to RISCV OpenCV", Point(20, 50), FONT_HERSHEY_COMPLEX, 1, // font face and scale Scalar(255, 255, 255), // white 1, LINE_AA); // line thickness and type }

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updated 2018-07-27 00:22:34 -0500

berak gravatar image

I am trying to executing cross compiled (for RISCV) sample c++ program.but i am getting error

I have cross compiled sample c++ program for riscv,and i am trying to executing in riscv-linux.Here riscv-linux there is now facility to display image as a result,so i am generating a result image matrix as a Text file and i am planing to see result in X86 architecture.but i am getting error before generating text file.

Makefile:-

CXX =riscv64-unknown-linux-gnu-g++
CXXFLAGS += -c -Wall $(shell pkg-config --cflags /home/billa/Downloads/opencv-3.4.2/platforms/linux/riscv_build/install/lib/pkgconfig/opencv.pc)
LDFLAGS += $(shell pkg-config --libs --static /home/billa/Downloads/opencv-3.4.2/platforms/linux/riscv_build/install/lib/pkgconfig/opencv.pc)
all: example
example: example.o; $(CXX) $< -o [email protected] $(LDFLAGS)
%.o: %.cpp; $(CXX) $< -o [email protected] $(CXXFLAGS)
clean: ; rm -f example.o example

example

Error: -

BusyBox v1.26.2 (2018-06-27 09:49:37 IST) built-in shell (ash)

/opencv/example

(ash) # /opencv/example /opencv/example Built with OpenCV 3.4.2 VIDEOIO ERROR: V4L: can't open camera by index 0 No capture

capture

My Sample c++ Program:

include "opencv2/core.hpp"

include "opencv2/imgproc.hpp"

include "opencv2/highgui.hpp"

include "opencv2/videoio.hpp"

include <iostream>

include <fstream>

#include "opencv2/core.hpp"
#include "opencv2/imgproc.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/videoio.hpp"
#include <iostream>
#include <fstream>

using namespace cv;
using namespace std;

std; void drawText(Mat & image);

image); int main() { cout << "Built with OpenCV " << CV_VERSION << endl; Mat image; VideoCapture capture; capture.open(0); if(capture.isOpened()) { cout << "Capture is opened" << endl; for(;;) { capture >> image; if(image.empty()) break; drawText(image); imshow("Sample", image); if(waitKey(10) >= 0) break; } } else { cout << "No capture" << endl; image = Mat::zeros(480, 640, CV_8UC1); drawText(image); //cout << image<<endl; imshow("sample",="" image);<="" p="">

image<<endl; //imshow("Sample", image); FileStorage fs("myfile.txt",FileStorage::WRITE); fs << "mat1" << image;

image;

    return 0;

} }

} void drawText(Mat & image) { putText(image, "Hello Welcome to RISCV OpenCV", Point(20, 50), FONT_HERSHEY_COMPLEX, 1, // font face and scale Scalar(255, 255, 255), // white 1, LINE_AA); // line thickness and type }

}