Used Gcc 4.7.3 and Qt v.4.7.3.2
The dll's needed to load graphscan:

chkdll32 graphscan.exe
Loading DLL 'libc065' --> C:\USR\LIB\LIBC065.DLL.   ----> yum install libc
Loading DLL 'QtCore4' --> C:\USR\LIB\QTCORE4.DLL.   ----> yum install libqt4  
Loading DLL 'QtGui4' --> C:\USR\LIB\QTGUI4.DLL.     ----> yum install libqt4
Loading DLL 'stdcpp6' --> C:\USR\LIB\STDCPP6.DLL.   ----> yum install libstdc++6  
Loading DLL 'QtNet4' --> C:\USR\LIB\QTNET4.DLL.     ----> yum install libqt4
Loading DLL 'QtXml4' --> C:\USR\LIB\QTXML4.DLL.     ----> yum install libqt4  
All DLL's used by 'graphscan.exe' could be loaded.

