I have installed QT 4.8 library on my OS X through direct install with .dmg file downloaded from qt-project.org. It seems a framework version. And so far, a lot of tools recognises it well. But when I am building octave on this computer, it gives a warning of "Qt libraries not found". I wonder why. And what can I do to make it recognise the qt lib on my machine.

The command I used for configure is

```
./configure --prefix=/usr/local --enable-shared F77=gfortran-4.2 LDFLAGS='-L/usr/local/lib'

```

---

(further information)

I did tried to find the installation of QT with 

```
find find /Library/ -name QtGui

```

Returning result being

```
/Library//Frameworks/QtGui.framework/QtGui
/Library//Frameworks/QtGui.framework/Versions/4/Headers/QtGui
/Library//Frameworks/QtGui.framework/Versions/4/QtGui

```

Along with the fact that `ipython notebook --matplotlib=qt` is working well on my system, I assume my Qt Library is successfully installed.

But when performing the check with `pkg-config`, both `pkg-config --cflag QtGui` and `pkg-config --libs QtGui` return no positive result.