How to use 'inplace_abn' module?

[Rashfu]

The code couldn't run as wish. I have run sudo apt-get install ninja-build on ubuntu18.04, but the error is as below:

Traceback (most recent call last):
  File "/home/dell/Codes/mono2++/train.py", line 3, in <module>
    from trainer import Trainer
  File "/home/dell/Codes/mono2++/trainer.py", line 19, in <module>
    import networks
  File "/home/dell/Codes/mono2++/networks/__init__.py", line 5, in <module>
    from .encoder_selfattn import get_resnet101_asp_oc_dsn
  File "/home/dell/Codes/mono2++/networks/encoder_selfattn.py", line 12, in <module>
    from networks.util import conv3x3, Bottleneck
  File "/home/dell/Codes/mono2++/networks/util.py", line 12, in <module>
    from inplace_abn.bn import InPlaceABNSync, InPlaceABN
  File "/home/dell/Codes/mono2++/inplace_abn/__init__.py", line 1, in <module>
    from .bn import ABN, InPlaceABN, InPlaceABNSync
  File "/home/dell/Codes/mono2++/inplace_abn/bn.py", line 9, in <module>
    from inplace_abn.functions import *
  File "/home/dell/Codes/mono2++/inplace_abn/functions.py", line 9, in <module>
    _backend = load(name="inplace_abn",
  File "/home/dell/anaconda3/envs/pytorch/lib/python3.8/site-packages/torch/utils/cpp_extension.py", line 1079, in load
    return _jit_compile(
  File "/home/dell/anaconda3/envs/pytorch/lib/python3.8/site-packages/torch/utils/cpp_extension.py", line 1317, in _jit_compile
    return _import_module_from_library(name, build_directory, is_python_module)
  File "/home/dell/anaconda3/envs/pytorch/lib/python3.8/site-packages/torch/utils/cpp_extension.py", line 1699, in _import_module_from_library
    file, path, description = imp.find_module(module_name, [path])
  File "/home/dell/anaconda3/envs/pytorch/lib/python3.8/imp.py", line 296, in find_module
    raise ImportError(_ERR_MSG.format(name), name=name)
ImportError: No module named 'inplace_abn'

Process finished with exit code 1

It seems that the customized module inplace_abn doesn't compile successfully.
How to fix it? Thank you~