Update CPU-only support for building the project. 更新对仅CPU构建的支持 #1214
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Setup.py adds CUDA extensions based on whether there is a GPU or not. If not presented, add CPU extensions only. Also added exception handling for module importing where error may occur.
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Setup.py adds CUDA extensions based on whether there is a GPU or not. If not presented, add CPU extensions only. Also added exception handling for module importing where error may occur.
在setup.py中添加了判断有没有GPU以决定是否添加GPU相关扩展。将nms_cpu的构建工具改为
torch.utils.cpp_extension的CppExtension。在使用构建的模块的地方添加了try-except以防止程序因找不到模块而中断。