problem compiling LibVLC_SampleCode_Qt

[extra]

I have try to compile LibVLC_SampleCode_Qt from http://wiki.videolan.org/LibVLC_SampleCode_Qt.I have already follow the instruction but i got this error when i try to build it

/usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib/libvlc.so: undefined reference to `playlist_AddExtOpt'

this is my .pro info

TEMPLATE = app
TARGET = vlc_on_qt

QT += core gui sql xml xmlpatterns network svg webkit script qt3support
LIBS += -lvlc
HEADERS += vlc_on_qt.h
SOURCES += main.cpp \
vlc_on_qt.cpp
FORMS += vlc_on_qt.ui
RESOURCES +=

i'm using QT 4.43 under ubuntu platform
please someone show me how to resolve this error

[Jean-Baptiste Kempf]

VLC version?