Problem with QtCreator + OpenCV

[rastru]

Hello
This is my first post, first of all say that I have read many post on this forum and others but have not found the solution to my problem:
http://labs.trolltech.com/forums/topic/1884
http://www.qtcentre.org/threads/3217...ith-QT-creator
...

My problem is that when compiling QtCreator I get the following error:

Running steps for project build Qt ... 
Configuration Unchanged, skipping qmake step. 
Starting "/ usr / bin / make-w 
make: Entering directory `/ Users / Laura / Desktop / VC / Qt-build-desktop ' 
/ Usr / bin / qmake-spec / macx usr/local/Qt4.6/mkspecs/macx-g + +-Makefile-o .. / Qt / Qt.pro
make: Leaving directory `/ Users / Laura / Desktop / VC / Qt-build-desktop ' 
make: Entering directory `/ Users / Laura / Desktop / VC / Qt-build-desktop ' 
g + +-headerpad_max_install_names-arch i386-o Qt.app / Contents / MacOS / Qt main.o mainwindow.o moc_mainwindow.o -F/Library/Frameworks -L/Library/Frameworks -L/opt/local/bin /-cxcore210 - cvaux210-cv210-highgui210-framework QtCore-framework QtGui 
Undefined symbols: 
"Cv:: fastFree (void *)", referenced from: 
cv:: Mat:: release () in main.o 
ld: symbol (s) not found 
collect2: ld returned 1 exit status 
make: *** [Qt.app / Contents / MacOS / Qt] Error 1 
make: Leaving directory `/ Users / Laura / Desktop / VC / Qt-build-desktop ' 
The process "/ usr / bin / make" exited with code% 2. 
Error while building Qt project (target: Desktop) 
When executing build step 'Make'

Running steps for project build Qt ... 
Configuration Unchanged, skipping qmake step. 
Starting "/ usr / bin / make-w 
make: Entering directory `/ Users / Laura / Desktop / VC / Qt-build-desktop ' 
/ Usr / bin / qmake-spec / macx usr/local/Qt4.6/mkspecs/macx-g + +-Makefile-o .. / Qt / Qt.pro
make: Leaving directory `/ Users / Laura / Desktop / VC / Qt-build-desktop ' 
make: Entering directory `/ Users / Laura / Desktop / VC / Qt-build-desktop ' 
g + +-headerpad_max_install_names-arch i386-o Qt.app / Contents / MacOS / Qt main.o mainwindow.o moc_mainwindow.o -F/Library/Frameworks -L/Library/Frameworks -L/opt/local/bin /-cxcore210 - cvaux210-cv210-highgui210-framework QtCore-framework QtGui 
Undefined symbols: 
"Cv:: fastFree (void *)", referenced from: 
cv:: Mat:: release () in main.o 
ld: symbol (s) not found 
collect2: ld returned 1 exit status 
make: *** [Qt.app / Contents / MacOS / Qt] Error 1 
make: Leaving directory `/ Users / Laura / Desktop / VC / Qt-build-desktop ' 
The process "/ usr / bin / make" exited with code% 2. 
Error while building Qt project (target: Desktop) 
When executing build step 'Make'

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My OS is: Mac OS X 10.6.4

In .pro QtCreator towards I added the following lines:

INCLUDEPATH + = "/ usr / local / include / opencv" 
LIBS + =-L '/ opt / Local / bin / "-cxcore210-cvaux210-cv210-highgui210

INCLUDEPATH + = "/ usr / local / include / opencv" 
LIBS + =-L '/ opt / Local / bin / "-cxcore210-cvaux210-cv210-highgui210

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My PATH is:

echo $ PATH 
/ Usr / local / include / opencv: / opt / local / bin: / opt / local / sbin: / usr / bin: / bin: / usr / sbin: / sbin: / usr / local / bin: / usr / texbin : / usr/X11/bin

echo $ PATH 
/ Usr / local / include / opencv: / opt / local / bin: / opt / local / sbin: / usr / bin: / bin: / usr / sbin: / sbin: / usr / local / bin: / usr / texbin : / usr/X11/bin

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The program is an example, with an added line:

# Include <QtGui/QApplication> 
# Include "mainwindow.h" 
# Include "cv.h" 
# Include "cxcore.h" 
# Include "highgui.h" 
using namespace cv; 
int main (int argc, char * argv []) 
( 
    QApplication a (argc, argv); 
    MainWindow w; 
    w.show (); 
    Mat matrix/ / line that fails 
    return a.exec (); 
)

# Include <QtGui/QApplication> 
# Include "mainwindow.h" 
# Include "cv.h" 
# Include "cxcore.h" 
# Include "highgui.h" 
using namespace cv; 
int main (int argc, char * argv []) 
( 
    QApplication a (argc, argv); 
    MainWindow w; 
    w.show (); 
    Mat matrix/ / line that fails 
    return a.exec (); 
)

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Any idea how to fix the error?

[tbscope]

Are you really sure that this is correct?

-L/opt/local/bin /-cxcore210 - cvaux210-cv210-highgui210-framework

-L/opt/local/bin /-cxcore210 - cvaux210-cv210-highgui210-framework

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Because I don't think so.

I guess it should be more like

-lcxcore -lcv -lcvaux -lhighgui -lml

-lcxcore -lcv -lcvaux -lhighgui -lml

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Maybe with a version number like 210.

[rastru]

No, I am not sure, I tested 10 000 things, but if I put

LIBS += -lcv

LIBS += -lcv

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I get the following error:

Running build steps for project Qt...
Configuration unchanged, skipping qmake step.
Starting: "/usr/bin/make" -w 
make: Entering directory `/Users/Laura/Desktop/VC/Qt-build-desktop' 
g++ -headerpad_max_install_names -arch i386 -o Qt.app/Contents/MacOS/Qt main.o mainwindow.o moc_mainwindow.o -F/Library/Frameworks -L/Library/Frameworks -lcv -framework QtGui -framework QtCore 
ld: warning: in /usr/lib/libcv.dylib, file was built for unsupported file format which is not the architecture being linked (i386) 
Undefined symbols: 
"cv::fastFree(void*)", referenced from: 
cv::Mat::release() in main.o 
ld: symbol(s) not found 
collect2: ld returned 1 exit status 
make: *** [Qt.app/Contents/MacOS/Qt] Error 1 
make: Leaving directory `/Users/Laura/Desktop/VC/Qt-build-desktop' 
The process "/usr/bin/make" exited with code %2.
Error while building project Qt (target: Desktop)
When executing build step 'Make'

Running build steps for project Qt...
Configuration unchanged, skipping qmake step.
Starting: "/usr/bin/make" -w 
make: Entering directory `/Users/Laura/Desktop/VC/Qt-build-desktop' 
g++ -headerpad_max_install_names -arch i386 -o Qt.app/Contents/MacOS/Qt main.o mainwindow.o moc_mainwindow.o -F/Library/Frameworks -L/Library/Frameworks -lcv -framework QtGui -framework QtCore 
ld: warning: in /usr/lib/libcv.dylib, file was built for unsupported file format which is not the architecture being linked (i386) 
Undefined symbols: 
"cv::fastFree(void*)", referenced from: 
cv::Mat::release() in main.o 
ld: symbol(s) not found 
collect2: ld returned 1 exit status 
make: *** [Qt.app/Contents/MacOS/Qt] Error 1 
make: Leaving directory `/Users/Laura/Desktop/VC/Qt-build-desktop' 
The process "/usr/bin/make" exited with code %2.
Error while building project Qt (target: Desktop)
When executing build step 'Make'

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and -lcv210 not find it (I have installed opencv2.1)

[Rida]

Hello,
Hello:
I faced the same problem while trying to use OpenCv library with Qt!
I am using:
1) OpenCv2.0
2) Qt Creator 2.01 Based on Qt 4.7.0 (32 bit)
3) Windows Xp

So I solved the problem by adding the following tags in the .pro file:

LIBS += -L C:\OpenCV2.0\bin -lcxcore200 -lcv200 -lcvaux200 -lhighgui200 -lml200 -lcxts200
INCLUDEPATH += C:/OpenCV2.0/include/opencv

Hope this will work