Build problem .pro "Undefined reference to _Imp__ ... "

[Balmung]

Hello everybody,

I'm new on QT and i need to use VLC-QT to create a media player.
I Download the library, i try to include it into my projet but i can't use this library with it.
I have already many lines of errors : "Undefined reference to Imp_ ...". I have correct some mistake done on the .pro
But all of this errors stay.

I link my .pro

QT += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = SelectViz
TEMPLATE = app

SOURCES += main.cpp
mainwindow.cpp
messagetimer.cpp

HEADERS += mainwindow.h
messagetimer.h

FORMS += mainwindow.ui

QT += core gui

win32:CONFIG(release,debug|release): LIBS += -L$$PWD/../..//Desktop/VLC/lib/ -lvlc-qt -lvlc-qt-widgets
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../../Desktop/VLC/debug/ -lvlc-qt -lvlc-qt-widgets
else:unix: LIBS += -L$$PWD/../../Desktop/VLC/lib/ -lvlc-qt -lvlc-qt-widgets
INCLUDEPATH += $$PWD/../../Desktop/VLC/include
DEPENDPATH += $$PWD/../../Desktop/VLC/include

i already see many problem solve but solutions doesn't work with my problem. (destructor problems, or qmake problems)
I work on Windows.
If someone can help me.
Thanks