I’m using Netbeans on Mac os x, compiling remotely on the beaglebone. Angstrom image from the 9th April 2012.
the code is
#include <stdio.h>
#include <opencv/cvaux.h>
#include <opencv/highgui.h>
#include <opencv/cxcore.h>
int main(int argc, char* argv[])
{
CvCapture* camera = cvCreateCameraCapture(-1); // Use the default camera
IplImage* frame = 0;
IplImage img;
frame = cvQueryFrame(camera); //need to capture at least one extra frame
frame = cvQueryFrame(camera);
if (frame != NULL) {
printf(“got frame\n\r”);
cvSaveImage(“webcam.jpg”, frame);
} else {
printf(“Null frame\n\r”);
}
cvReleaseCapture(&camera);
return 0;
}
but I keep getting the following error message. I’m new to this type of programming so could really do with some pointers.
“/usr/bin/make” -f nbproject/Makefile-Debug.mk QMAKE= SUBPROJECTS= .build-conf
make[1]: Entering directory /testanapp' "/usr/bin/make" -f nbproject/Makefile-Debug.mk dist/Debug/GNU-Linux-x86/testanapp make[2]: Entering directory /testanapp’
mkdir -p build/Debug/GNU-Linux-x86
rm -f build/Debug/GNU-Linux-x86/main.o.d
g++ -c -g -I…/usr/include -I…/usr/lib -MMD -MP -MF build/Debug/GNU-Linux-x86/main.o.d -o build/Debug/GNU-Linux-x86/main.o main.cpp
mkdir -p dist/Debug/GNU-Linux-x86
g++ -o dist/Debug/GNU-Linux-x86/testanapp build/Debug/GNU-Linux-x86/main.o -L…/usr/include -L…/usr/lib
build/Debug/GNU-Linux-x86/main.o: In function main': /testanapp/main.cpp:14: undefined reference to cvCreateCameraCapture’
/testanapp/main.cpp:19: undefined reference to cvQueryFrame' /testanapp/main.cpp:20: undefined reference to cvQueryFrame’
/testanapp/main.cpp:23: undefined reference to cvSaveImage' /testanapp/main.cpp:27: undefined reference to cvReleaseCapture’
collect2: ld returned 1 exit status
make[2]: *** [dist/Debug/GNU-Linux-x86/testanapp] Error 1
make[1]: *** [.build-conf] Error 2
make: *** [.build-impl] Error 2
make[2]: Leaving directory /testanapp' make[1]: Leaving directory /testanapp’
BUILD FAILED (exit value 2, total time: 14s)