Ask Your Question

Revision history [back]

click to hide/show revision 1
initial version

How to Link OpenCV 2.4.9 & Qt in MacOS

Hello there...

I have installed OpenCV using Homebrew in Mac OS Mavericks and QT Creator from the website.

I am trying to test OpenCV & QT Creator using a simple program from the internet, but I am ending up with some errors.

I donno wats going wrong.... I am new to Opencv and QT ... Your Help is much appreciated..

Below are my project details. Guide me for my first ever OpenCV & QT with Mac OS X Program......

Thx.

--- Untitled.pro File ---

QT += core

QT -= gui

TARGET = untitled1

CONFIG += console

CONFIG -= app_bundle

TEMPLATE = app

SOURCES += main.cpp

LIBS += -L/usr/local/Cellar/opencv/2.4.9/lib \

       -lopencv_highgui \

       -lopencv_imgproc \

       -lopencv_core \

       -lopencv_features2d \

       -lopencv_calib3d \

INCLUDEPATH += /usr/local/Cellar/opencv/2.4.9/include \

--- Source File - main.cpp ---

include opencv2/core/core.hpp

include opencv2/highgui/highgui.hpp

include iostream

include opencv/cv.h

using namespace cv;

int main()

{         

    std::cout << "Hello World!" << std::endl;

    cv::Mat mat;

    mat = cv::imread("Unknown.JPEG");

    cvNamedWindow("hello");

    cv::imshow("hello",mat);

    cvWaitKey(0);

    return 0;
}

--- The Compile Output with Errors ---

14:30:57: Running steps for project untitled... 14:30:57: Configuration unchanged, skipping qmake step. 14:30:57: Starting: "/usr/bin/make" /Users/Macs/Qt/5.3.1/bin/qmake -spec macx-g++ CONFIG+=debug CONFIG+=x86_64 -o Makefile ../untitled/untitled.pro /Applications/Xcode.app/Contents/Developer/usr/bin/g++ -headerpad_max_install_names -Wl,-syslibroot,/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk -mmacosx-version-min=10.6 -o untitled main.o -F/usr/local/Cellar/qt5/5.3.1/lib -L/usr/local/Cellar/opencv/2.4.9/lib -lopencv_highgui -lopencv_imgproc -lopencv_core -lopencv_features2d -lopencv_calib3d -framework QtCore Undefined symbols for architecture x86_64: "cv::imread(std::string const&, int)", referenced from: _main in main.o "cv::imshow(std::string const&, cv::_InputArray const&)", referenced from: _main in main.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) make: * [untitled] Error 1 14:30:57: The process "/usr/bin/make" exited with code 2. Error while building/deploying project untitled (kit: Desktop) When executing step "Make" 14:30:57: Elapsed time: 00:00.