First Day with Qt: Makefile: ***Multiple target Patterns. stop.

[Anas]

Hi guys,
I have medium level experience of programming in C++. Today I got a very small project assignment in University. For that I want to use Qt to connect with MySQl for basic data storage and retrieval. But unfortunately I am stuck at the very first level of compiling and running a hello world type program in Qt.
I have Qt SDK 4.8.0 installed on Windows 7.
I have placed the following source code in a file named: GUITextEdit.cpp

#include <QApplication>
#include <QTextEdit>
 
int main( int args, char **argv )
{
	QApplication myApp( args, argv );
	QTextEdit textedit;
 
	textedit.show();
	return myApp.exec();
}

#include <QApplication>
#include <QTextEdit>

int main( int args, char **argv )
{
	QApplication myApp( args, argv );
	QTextEdit textedit;
	
	textedit.show();
	return myApp.exec();
}

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Here is what happens when I try to compile this program.

qt-problem.jpg

line no. 66 of the generated Makefile is:

Makefile: GUITextEdit.pro c:/QtSDK/Desktop/Qt/4.8.0/mingw/mkspecs/default/qmake.conf c:/QtSDK/Desktop/Qt/4.8.0/mingw/mkspecs/qconfig.pri \

I also have netbeans 7.1 installed with cygwin for my usual C++ ( and java ) programming. Could it be a reason of this problem.
Please help me and tell what could be a reason of this problem.