linking QuaZip with Qt 4.8.0 into project - quazip

Question

I have a project where I want to unzip files.
I have found Quazip to be close to the implementation I want(check), but....
when build the project the compiler says
Makefile.Release:241: warning: overriding commands for target
release/moc_quazipfile.o' Makefile.Release:219: warning: ignoring
old commands for targetrelease/moc_quazipfile.o'
release\moc_quazipfile.cpp:40: warning: 'static void
QuaZipFile::qt_static_metacall(QObject*, QMetaObject::Call, int,
void**)' redeclared without dllimport attribute: previous dllimport
ignored release\moc_quazipfile.cpp:48: warning:
'QuaZipFile::staticMetaObjectExtraData' redeclared without dllimport
attribute after being referenced with dll linkage
release\moc_quazipfile.cpp:52: warning:
'QuaZipFile::staticMetaObject' redeclared without dllimport attribute
after being referenced with dll linkage
release\moc_quazipfile.cpp:61: warning: 'virtual const QMetaObject*
QuaZipFile::metaObject() const' redeclared without dllimport
attribute: previous dllimport ignored release\moc_quazipfile.cpp:66:
warning: 'virtual void* QuaZipFile::qt_metacast(const char*)'
redeclared without dllimport attribute: previous dllimport ignored
release\moc_quazipfile.cpp:74: warning: 'virtual int
QuaZipFile::qt_metacall(QMetaObject::Call, int, void*)' redeclared
without dllimport attribute: previous dllimport ignored
mingw32-make.exe[1]: Leaving directory `*
**quazip_test-build-desktop-Qt_4_8_0_for_Desktop_-MinGW_Qt_SDK__Release'
release\moc_quazipfile.cpp:48: error: definition of static data
member 'QuaZipFile::staticMetaObjectExtraData' of dllimport'd class
mingw32-make.exe[1]: * [release/moc_quazipfile.o] Error 1
mingw32-make.exe: * [release] Error 2 13:29:01: The process
"C:\QtSDK\mingw\bin\mingw32-make.exe" exited with code 2. Error while
building project quazip_test (target: Desktop) When executing build
step 'Make'
.pro:
QT += core gui
TARGET = quazip_test
TEMPLATE = app
INCLUDEPATH += C:/QtSDK/QtSources/4.8.0/src/3rdparty/zlib
SOURCES += main.cpp\
mainwindow.cpp \
quazip/quazipnewinfo.cpp \
quazip/quazipfile.cpp \
quazip/quazip.cpp \
quazip/quacrc32.cpp \
quazip/qioapi.cpp \
quazip/moc_quazipfile.cpp \
quazip/JlCompress.cpp \
quazip/quaadler32.cpp
HEADERS += mainwindow.h \
quazip/crypt.h \
quazip/unzip.h \
quazip/quaadler32.h \
quazip/quazipnewinfo.h \
quazip/quazipfileinfo.h \
quazip/quazipfile.h \
quazip/quazip_global.h \
quazip/quazip.h \
quazip/quacrc32.h \
quazip/quachecksum32.h \
quazip/JlCompress.h \
quazip/ioapi.h \
quazip/zip.h
FORMS += mainwindow.ui
mainwindow.h:
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include "quazip/quazip.h"
#include "quazip/quazipfile.h"
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
private:
Ui::MainWindow *ui;
};
#endif // MAINWINDOW_H
mainwindow.cpp:
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
QuaZip *temp = new QuaZip();
}
MainWindow::~MainWindow()
{
delete ui;
}
What am I doing wrong??
BR