Qt Creator Just one linking error

[sujan.dasmahapatra]

:-1: error: collect2: ld returned 1 exit status // Just only one error please help me somone for Qt Creator

//.pro file
SOURCES += main.cpp
TEMPLATE = app
LIBS += -Lpathtolib -lfoo
QT += gui

//code
#include <QApplication>
#include <QPushButton>
int main(int argc, char **argv)
{
QApplication app(argc,argv);
QPushButton button("Show");
button.show();
return app.exec();
}
//////////////////////////////////////////////////////////////////////////////////////////////

[sujan.dasmahapatra]

Dear Friends
why msvc link is required in this. I am running only Qt Creator. ! Please help me to resolve my Creator !
I am not able to compile Qt Creator Just I have installed. it's giving these errors.


C:/Qt/2009.03/mingw/bin/../lib/gcc/mingw32/3.4.5/../../../crt2.o:crt1.c::-1: error: undefined reference to `__cpu_features_init'
C:/Qt/2009.03/mingw/bin/../lib/gcc/mingw32/3.4.5/../../../crt2.o:crt1.c::-1: error: undefined reference to `_pei386_runtime_relocator'
fu000001.o::-1: error: undefined reference to `libmsvcrt_a_iname'
fu000002.o::-1: error: undefined reference to `libmsvcrt_a_iname'
fu000004.o::-1: error: undefined reference to `libmsvcrt_a_iname'
fu000005.o::-1: error: undefined reference to `libmsvcrt_a_iname'
nmth000000.o::-1: error: undefined reference to `_nm___fmode'
nmth000003.o::-1: error: undefined reference to `_nm___fpreset'
:-1: error: collect2: ld returned 1 exit status

[sujan.dasmahapatra]

Those posts are of no help.Please someone help me to resolve it.

I have installed this one :
qt-sdk-win-opensource-2009.03.1

I have just installed this sdk. Trying to build a simple application just 'hello world'

Errors:

C:/Qt/2009.03/mingw/bin/../lib/gcc/mingw32/3.4.5/../../../crt2.o:crt1.c::-1: error: undefined reference to `__cpu_features_init'
C:/Qt/2009.03/mingw/bin/../lib/gcc/mingw32/3.4.5/../../../crt2.o:crt1.c::-1: error: undefined reference to `_pei386_runtime_relocator'
fu000001.o::-1: error: undefined reference to `libmsvcrt_a_iname'
fu000002.o::-1: error: undefined reference to `libmsvcrt_a_iname'
fu000004.o::-1: error: undefined reference to `libmsvcrt_a_iname'
fu000005.o::-1: error: undefined reference to `libmsvcrt_a_iname'
nmth000000.o::-1: error: undefined reference to `_nm___fmode'
nmth000003.o::-1: error: undefined reference to `_nm___fpreset'
:-1: error: collect2: ld returned 1 exit status