Compile fails on Debian Lenny

I'm trying to compile awn on Debian Lenny, and I installed all the dependencies listed here:
https://answers.launchpad.net/awn/+question/10830

./autogen.sh completes successfully, but when compiling I get this:

***INFO*** Generating awn.c from awn.defs
Traceback (most recent call last):
  File "/usr/share/pygtk/2.0/codegen/codegen.py", line 1707, in ?
    sys.exit(main(sys.argv))
  File "/usr/share/pygtk/2.0/codegen/codegen.py", line 1665, in main
    p.startParsing()
  File "/usr/share/pygtk/2.0/codegen/scmexpr.py", line 113, in startParsing
    for statement in statements:
  File "/usr/share/pygtk/2.0/codegen/scmexpr.py", line 27, in parse
    fp = open(filename, 'r')
IOError: [Errno 2] No such file or directory: '/usr/share/pygtk/2.0/defs/gconf.defs'
make[2]: *** [awn.c] Error 1
make[2]: Leaving directory `/home/jmartens/source/avant-window-navigator/pyawn'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/jmartens/source/avant-window-navigator'
make: *** [all] Error 2

Checked out from bzr today (Sep 13)