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:
Qt Code: 
  1. Running steps for project build Qt ... 
  2. Configuration Unchanged, skipping qmake step. 
  3. Starting "/ usr / bin / make-w 
  4. make: Entering directory `/ Users / Laura / Desktop / VC / Qt-build-desktop ' 
  5. / Usr / bin / qmake-spec / macx usr/local/Qt4.6/mkspecs/macx-g + +-Makefile-o .. / Qt / Qt.pro
  6. make: Leaving directory `/ Users / Laura / Desktop / VC / Qt-build-desktop ' 
  7. make: Entering directory `/ Users / Laura / Desktop / VC / Qt-build-desktop ' 
  8. 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 
  9. Undefined symbols: 
  10. "Cv:: fastFree (void *)", referenced from: 
  11. cv:: Mat:: release () in main.o 
  12. ld: symbol (s) not found 
  13. collect2: ld returned 1 exit status 
  14. make: *** [Qt.app / Contents / MacOS / Qt] Error 1 
  15. make: Leaving directory `/ Users / Laura / Desktop / VC / Qt-build-desktop ' 
  16. The process "/ usr / bin / make" exited with code% 2. 
  17. Error while building Qt project (target: Desktop) 
  18. 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:
Qt Code: 
  1. INCLUDEPATH + = "/ usr / local / include / opencv" 
  2. LIBS + =-L '/ opt / Local / bin / "-cxcore210-cvaux210-cv210-highgui210
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My PATH is:
Qt Code: 
  1. echo $ PATH 
  2. / 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:
Qt Code: 
  1. # Include <QtGui/QApplication> 
  2. # Include "mainwindow.h" 
  3. # Include "cv.h" 
  4. # Include "cxcore.h" 
  5. # Include "highgui.h" 
  6. using namespace cv; 
  7. int main (int argc, char * argv []) 
  8. ( 
  9.     QApplication a (argc, argv); 
  10.     MainWindow w; 
  11.     w.show (); 
  12.     Mat matrix/ / line that fails 
  13.     return a.exec (); 
  14. )
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Any idea how to fix the error?