In trying to upgrade the python API scanning system to pygxxml-1.6.2, I encountered the following problem due to an apparent API change:

AttributeError: 'module' object has no attribute 'config_t'
Traceback (most recent call last):
  File "/home/buildslave/scratch/bake/source/ns-3.22/bindings/python/ns3modulescan-modular.py", line 280, in <module>
    ns3_module_scan(sys.argv[1], sys.argv[2], eval(sys.argv[3]), sys.argv[4], sys.argv[5])
  File "/home/buildslave/scratch/bake/source/ns-3.22/bindings/python/ns3modulescan-modular.py", line 260, in ns3_module_scan
    gccxml_options=gccxml_options)
  File "/home/buildslave/scratch/bake/source/pybindgen-0.17.0.886/pybindgen/gccxmlparser.py", line 693, in parse_init
    self.gccxml_config = parser.config_t(**gccxml_options)
AttributeError: 'module' object has no attribute 'config_t'


For ns-3.22 release, I am rolling back to pygccxml-1.0.0.  This fixed things for me (Fedora 21, 64-bit system).