[OT] Creating a DLL

Hello !

I do not know where i should ask this question,
but as SDL creates a DLL i thought ask it here :

I try to build a DLL from the following source with
MinGW :

http://www.syntheticsw.com/~wizard/tmp/mgwdllbuidl.zip

As a tutorial i used this :

http://www.mingw.org/docs.shtml

CU