Traceback (most recent call last):
  File "/home/tkeller/private/guitone/waf", line 334, in ?
    Main()
  File "/home/tkeller/.waf-1.0.2/wafadmin/Scripting.py", line 184, in Main
    ret = bld.compile()
  File "/home/tkeller/.waf-1.0.2/wafadmin/Build.py", line 190, in compile
    ret = executor.start()
  File "/home/tkeller/.waf-1.0.2/wafadmin/Runner.py", line 241, in start
    if not proc.must_run():
  File "/home/tkeller/.waf-1.0.2/wafadmin/Task.py", line 196, in must_run
    self.m_dep_sig = self.m_scanner.get_signature(self)
  File "/home/tkeller/.waf-1.0.2/wafadmin/Scan.py", line 28, in get_signature
    ret = self._get_signature(task)
  File "/home/tkeller/.waf-1.0.2/wafadmin/Scan.py", line 74, in _get_signature
    return self._get_signature_default_strong(task)
  File "/home/tkeller/.waf-1.0.2/wafadmin/Scan.py", line 83, in _get_signature_default_strong
    variant = task.m_inputs[0].variant(env)
IndexError: list index out of range