I'm not sure if this project is still under maintainance (which is really a pity, specially since scheme is such a great language that has been understimated by GNOME), but I'll post this bug for the record.
If I manage to solve it I'll post a patch, but I'm not very good at this...
When I run configure I get this error
------------------------BEGIN
checking host system type... Invalid...
2009-04-01 12:48:20 UTC in Scwm