error when run build.py

[ybcc2015]

Hi man, thanks for your share!

An error occurred when I run python build.py, the error is as follows:

Traceback (most recent call last):
  File "build.py", line 30, in <module>
    extra_objects=extra_objects
  File "/root/anaconda3/envs/pcc_env/lib/python2.7/site-packages/torch/utils/ffi/__init__.py", line 159, in create_extension
    ffi.cdef(_typedefs + all_headers_source)
  File "/root/anaconda3/envs/pcc_env/lib/python2.7/site-packages/cffi/api.py", line 112, in cdef
    self._cdef(csource, override=override, packed=packed, pack=pack)
  File "/root/anaconda3/envs/pcc_env/lib/python2.7/site-packages/cffi/api.py", line 126, in _cdef
    self._parser.parse(csource, override=override, **options)
  File "/root/anaconda3/envs/pcc_env/lib/python2.7/site-packages/cffi/cparser.py", line 347, in parse
    self._internal_parse(csource)
  File "/root/anaconda3/envs/pcc_env/lib/python2.7/site-packages/cffi/cparser.py", line 352, in _internal_parse
    ast, macros, csource = self._parse(csource)
  File "/root/anaconda3/envs/pcc_env/lib/python2.7/site-packages/cffi/cparser.py", line 296, in _parse
    self.convert_pycparser_error(e, csource)
  File "/root/anaconda3/envs/pcc_env/lib/python2.7/site-packages/cffi/cparser.py", line 325, in convert_pycparser_error
    raise CDefError(msg)
cffi.CDefError: cannot parse "int roi_pooling_forward(int pooled_height, int pooled_width, float spatial_scale,"
<cdef source string>:29:82: Illegal character '\r'

Could you help me solve this error ?
Looking forward for your reply, thank you！