Expose WSDL from WCF Service Library

Hi,

I created a WCF service library and hosting it in a WPF application.
Accessing it via C# it's easy (and some would even say - fun).

In order to access the service via other platforms (like iPhone) I need to do it via WSDL.
In the past I created a WCF "website" and I could access the WSDL via "../service.svc?wsdl".

The WCF service library is missing the .svc file so I don't know how and if it's possible to access the "/service.svc?wsdl" file.

Help would be appreciated.

Thanks!