atldef.h ?

[Per Wigren]

Hi!

I'm extremly new to this so please don't call me names! :)

I'm trying to port a Windows app to Linux using winelib. When running 
./configure I get this error:
checking for atldef.h header... configure: error: Could not find the ATL 
includes

What is atldef.h? Some third-party stuff? It doesn't seem to be included with 
wine..

Regards
Per Wigren