user lib production

I have tried to produce a user lib for the first time, but it did not work.
I used the Tool 'F-Userlib.exe' that came with my Blitz+, but it only created the .decls-file including the line
.lib " "
(no .dll-filename!)
Apparently no .dll-file was produced!

Now my two questions:
1) How can I create a .dll-file from an Blitz+ source code.
2) Which C-compiler do you experienced people use for better user libs? (I am looking for a simple and free one!)

Thanx in advance!

it probably involves a lot of chanting, candles, and dancing around.

B+ can't create DLL files on its own, although it can call DLL's created by other languages.

Interesting! So what's this tool 'F-Userlib.exe' good for?