ndnSIM/ns-3 can ' t run normally

[ra7ul]

ndnSIM-nom-rapid-car2car-master can run well, but ndnSIM/ns-3 can ' t. Is this kind of phenomenon normal? when I am in trokee@trokee7:~/ra7ul/ndnSIM/ns-3$ to run anyting,it shows:
Traceback (most recent call last):
File "/home/trokee/ra7ul/ndnSIM/ns-3/.waf-1.7.11-2f760793a9090bf35f69082a250595d9/waflib/Scripting.py", line 97, in waf_entry_point
run_commands()
File "/home/trokee/ra7ul/ndnSIM/ns-3/.waf-1.7.11-2f760793a9090bf35f69082a250595d9/waflib/Scripting.py", line 149, in run_commands
parse_options()
File "/home/trokee/ra7ul/ndnSIM/ns-3/.waf-1.7.11-2f760793a9090bf35f69082a250595d9/waflib/Scripting.py", line 127, in parse_options
Context.create_context('options').execute()
File "/home/trokee/ra7ul/ndnSIM/ns-3/.waf-1.7.11-2f760793a9090bf35f69082a250595d9/waflib/Options.py", line 134, in execute
super(OptionsContext,self).execute()
File "/home/trokee/ra7ul/ndnSIM/ns-3/.waf-1.7.11-2f760793a9090bf35f69082a250595d9/waflib/Context.py", line 87, in execute
self.recurse([os.path.dirname(g_module.root_path)])
File "/home/trokee/ra7ul/ndnSIM/ns-3/.waf-1.7.11-2f760793a9090bf35f69082a250595d9/waflib/Context.py", line 128, in recurse
user_function(self)
File "/home/trokee/ra7ul/ndnSIM/ns-3/wscript", line 210, in options
opt.recurse('bindings/python')
File "/home/trokee/ra7ul/ndnSIM/ns-3/.waf-1.7.11-2f760793a9090bf35f69082a250595d9/waflib/Context.py", line 122, in recurse
wscript_module=load_module(node.abspath())
File "/home/trokee/ra7ul/ndnSIM/ns-3/.waf-1.7.11-2f760793a9090bf35f69082a250595d9/waflib/Context.py", line 281, in load_module
exec(compile(code,path,'exec'),module.dict)
File "/home/trokee/ra7ul/ndnSIM/ns-3/bindings/python/wscript", line 256
pygccxml_version = tuple([int(x) for x in pygccxml_version_str.split('.')])
^
IndentationError: unexpected indent