Hello
I am new to openCV and I would like to install openCV and use it with QT.
I used macports to install it and i set the path in the terminal.
What I did was;
I installed macports
I typed in the terminal
export PATH=$PATH:/opt/local/bin
source .profile
sudo port -v selfupdate
sudo port install opencv
restart
Thats all…
Now i try to compile a Helloworld but i get unknown variable error. Looks like something with the linker gone wrong or i included the wrong libs? I searched google and I found some hints but nothing helped yet. Maybe someone got a suggestion?
Thank you very much for your time and answer!
My settings:
#-------------------------------------------------
#
# Project created by QtCreator 2014-02-04T22:10:07
#
#-------------------------------------------------
QT += core
QT -= gui
TARGET = opencvTest
CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
SOURCES += main.cpp
INCLUDEPATH += /opt/local/include
LIBS += -L/opt/local/lib
LIBS += -lopencv_core
-lopencv_highgui
#include <iostream>
#include <opencv2/highgui/highgui.hpp>
using namespace std ;
using namespace cv ;
int main()
{
Mat img ;
img = imread("unknown.jpg") ;
return 0;
}
Error message
10:39:10: Running steps for project opencvTest...
10:39:10: Configuration unchanged, skipping qmake step.
10:39:10: Starting: "/usr/bin/make"
/Users/Ben/Qt/5.2.0/clang_64/bin/qmake -spec macx-g++ CONFIG+=debug CONFIG+=x86 CONFIG+=declarative_debug CONFIG+=qml_debug -o Makefile ../opencvTest/opencvTest.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 opencvTest main.o -F/Users/Ben/Qt/5.2.0/clang_64/lib -L/opt/local/lib -lopencv_core -framework QtCore
Undefined symbols for architecture x86_64:
"cv::imread(std::string const&, int)", 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: *** [opencvTest] Error 1
10:39:10: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project opencvTest (kit: Unnamed)
When executing step 'Make'
10:39:10: Elapsed time: 00:00.
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