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# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
import glob
import os.path
import torch
try:
from torch.utils.cpp_extension import load as load_ext
from torch.utils.cpp_extension import CUDA_HOME
except ImportError:
raise ImportError("The cpp layer extensions requires PyTorch 0.4 or higher")
def _load_C_extensions():
this_dir = os.path.dirname(os.path.abspath(__file__))
this_dir = os.path.dirname(this_dir)
this_dir = os.path.join(this_dir, "csrc")
main_file = glob.glob(os.path.join(this_dir, "*.cpp"))
source_cpu = glob.glob(os.path.join(this_dir, "cpu", "*.cpp"))
source_cuda = glob.glob(os.path.join(this_dir, "cuda", "*.cu"))
source = main_file + source_cpu
extra_cflags = []
if torch.cuda.is_available() and CUDA_HOME is not None:
source.extend(source_cuda)
extra_cflags = ["-DWITH_CUDA"]
source = [os.path.join(this_dir, s) for s in source]
extra_include_paths = [this_dir]
return load_ext(
"torchvision",
source,
extra_cflags=extra_cflags,
extra_include_paths=extra_include_paths,
)
_C = _load_C_extensions()
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