error: LNK1104: cannot open file 'libs.obj'

[devd251993]

Hi,
I am trying to run simple program of Opencv for opening camera.
But after compiling i am getting linking error

:-1: error: LNK1104: cannot open file 'G:\Opencv-2.4.5\Opencv\build\x86\libs.obj'

I have checked libs folder but there is no libs.obj file present there

This my .pro file

#-------------------------------------------------
#
# Project created by QtCreator 2014-02-13T12:51:19
#
#-------------------------------------------------
 
QT       += core gui
 
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 
TARGET = Project
TEMPLATE = app
 
 
SOURCES += main.cpp\
        mainwindow.cpp
 
HEADERS  += mainwindow.h
 
FORMS    += mainwindow.ui
 
INCLUDEPATH += G:\\Opencv-2.4.5\\Opencv\\build\\include
 
LIBS +=G:\\Opencv-2.4.5\\Opencv\\build\\x86\\libs \
    -lopencv_calib3d245 \
    -lopencv_calib3d245d \
    -lopencv_contrib245 \
    -lopencv_contrib245d \
    -lopencv_core245 \
    -lopencv_core245d \
    -lopencv_features2d245 \
    -lopencv_features2d245d \
    -lopencv_gpu245 \
    -lopencv_gpu245d \
    -lopencv_highgui245 \
    -lopencv_highgui245d \
    -lopencv_imgproc245 \
    -lopencv_imgproc245d \
    -lopencv_video245 \
    -lopencv_video245d

#-------------------------------------------------
#
# Project created by QtCreator 2014-02-13T12:51:19
#
#-------------------------------------------------

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = Project
TEMPLATE = app


SOURCES += main.cpp\
        mainwindow.cpp

HEADERS  += mainwindow.h

FORMS    += mainwindow.ui

INCLUDEPATH += G:\\Opencv-2.4.5\\Opencv\\build\\include

LIBS +=G:\\Opencv-2.4.5\\Opencv\\build\\x86\\libs \
    -lopencv_calib3d245 \
    -lopencv_calib3d245d \
    -lopencv_contrib245 \
    -lopencv_contrib245d \
    -lopencv_core245 \
    -lopencv_core245d \
    -lopencv_features2d245 \
    -lopencv_features2d245d \
    -lopencv_gpu245 \
    -lopencv_gpu245d \
    -lopencv_highgui245 \
    -lopencv_highgui245d \
    -lopencv_imgproc245 \
    -lopencv_imgproc245d \
    -lopencv_video245 \
    -lopencv_video245d

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This is the code I have written

#include "mainwindow.h"
#include <QApplication>
#include <opencv/cv.h>
#include <opencv/highgui.h>
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    CvCapture *capture = 0;
    IplImage *frame = 0;
    int key = 0;
 
    /* initialize camera */
    capture = cvCaptureFromCAM( 0 );
 
    /* always check */
    if ( !capture ) {
         fprintf( stderr, "Cannot open initialize webcam!\n" );
         return 1; }
 
    cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH, 640);
    cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT, 480);
 
    cvSetCaptureProperty(capture, CV_CAP_PROP_FPS, 8);
 
    /* create a window for the video */
    cvNamedWindow( "result", CV_WINDOW_AUTOSIZE );
 
    while( key != 'q' ) {
         /* get a frame */
         frame = cvQueryFrame( capture );
 
         /* always check */
         if( !frame ) break;
 
         /* display current frame */
         cvShowImage("Left", frame);
 
         /* exit if user press 'q' */
         key = cvWaitKey( 1 ); }
 
    /* free memory */
    cvDestroyWindow( "result" );
    cvReleaseCapture( &capture );
    return a.exec();
}

#include "mainwindow.h"
#include <QApplication>
#include <opencv/cv.h>
#include <opencv/highgui.h>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    CvCapture *capture = 0;
    IplImage *frame = 0;
    int key = 0;

    /* initialize camera */
    capture = cvCaptureFromCAM( 0 );

    /* always check */
    if ( !capture ) {
         fprintf( stderr, "Cannot open initialize webcam!\n" );
         return 1; }

    cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH, 640);
    cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT, 480);

    cvSetCaptureProperty(capture, CV_CAP_PROP_FPS, 8);

    /* create a window for the video */
    cvNamedWindow( "result", CV_WINDOW_AUTOSIZE );

    while( key != 'q' ) {
         /* get a frame */
         frame = cvQueryFrame( capture );

         /* always check */
         if( !frame ) break;

         /* display current frame */
         cvShowImage("Left", frame);

         /* exit if user press 'q' */
         key = cvWaitKey( 1 ); }

    /* free memory */
    cvDestroyWindow( "result" );
    cvReleaseCapture( &capture );
    return a.exec();
}

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Snapshot of error

error.jpg

Can anybody help me please?

[anda_skoa]

In your LIBS varriable you need -L before the path to the libraries.

Cheers,
_

[devd251993]

Thanks ,
But its not working..
Still I am getting same error

[anda_skoa]

How does your LIBS variable look now?

Cheers,
_

[devd251993]

Got it..
The path was wrong...
Thank you...