Problem configuring vlc 1.1.3
[...] checking for UPNP... no configure: WARNING: Library libupnp needed for upnp was not found checking for QT4... no configure: WARNING: Qt 4 library not found configure: error: The skins2 module depends on a the Qt4 development package. Without it you won't be able to open any dialog box from the interface, which makes the skins2 interface rather useless. Install the Qt4 development package or alternatively you can also configure with: --disable-qt4 --disable-skins2.
I have QT 4.5 compiled from source and installed in its default location. Why can't it be found by the configure script ?