gtk-doc without DISPLAY?

[mcmahill mtl mit edu]

is there a way to use gtk-doc, in particular gtk-scanobj without a valid
DISPLAY set?  I'm wanting to do some batch compilation of several packages
on a remote machine where I don't have a Xserver running (but do have X
headers, and libs installed).

Right now, I just get:

creating libglade-scan

Gtk-WARNING **: cannot open display: 
Scan failed


Thanks
-Dan