I have installed QT 4 to doing my project but unfortunately i couldn't compile any thing.
i really don't what is the problem, because QT4 is from Nokia and also the source code that i compiled.
Then i send an attachment to bitdefender team to give me a solution, this is it:
Problem:

Solution:
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1. Open the BitDefender program, select "Options" (from the top right corner)
- >select the "Expert View":
2. Select the Antivirus module and then click on Advanced Settings - > the
"Exclusions" tab;
3. Click on the plus (+) and browse to the location of the mingw32-make.exe
file;
4. Click on OK and make sure that the file is allowed;
5. Restart the computer and check if the issue is solved.
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i did, but nothing happen:

if some one know what is the problem and its solution, please help me, i really need to do my project with QT 4.
Thanks.