Can't build windows torchVsion C++ API library

🐛 Describe the bug

• I try to use TorchVision c++ API in windows10. I follow https://github.com/pytorch/vision Using the models on C++. I download libtorch1.10.1-cu102 and unzip it at D:\thirdpartyforwindows_for_ai\libtorch\libtorch1.10.1-cu102.

git clone https://github.com/pytorch/vision.git
cd vision
git checkout v0.11.2
mkdir build
cd build 
cmake -DCMAKE_GENERATOR_PLATFORM=x64 -DCMAKE_PREFIX_PATH="D:\thirdpartyforwindows_for_ai\libtorch\libtorch1.10.1-cu102;C:\Users\user\Desktop\pybind11\install;C:\Users\user\anaconda3\envs\webv2\libs" -DCMAKE_INSTALL_PREFIX="C:\Users\user\Desktop\torchVision\install" DCMAKE_BUILD_TYPE=Release ..
cmake --build .

• After Build, I get some error message

D:\thirdpartyforwindows_for_ai\libtorch\libtorch1.10.1-cu102\include\ATen/core/boxing/KernelFunction_impl.h(75): error
C2672: 'c10::KernelFunction::call': 找不到相符的多載函式 [C:\Users\user\Desktop\torchVision\build\torchvision.vcxproj]
D:\thirdpartyforwindows_for_ai\libtorch\libtorch1.10.1-cu102\include\ATen/core/boxing/KernelFunction_impl.h(81): error
C2783: 'Return c10::KernelFunction::call(const c10::OperatorHandle &,c10::DispatchKeySet,Args...) const': 無法針對 'Return'
 推算 樣板 引數 [C:\Users\user\Desktop\torchVision\build\torchvision.vcxproj]

• Is my Libtorch version wrong? Is there anything wrong with my build steps?

Versions

• Torch 1.10.1+cu102
• Torchvision checkout v0.11.2
• windows10

cc @peterjc123 @nbcsm @guyang3532 @maxluk @gunandrose4u @mszhanyi

[billy800413]

@marcobevih2o For your reference, now I can create the dll in the following way. It still requires python. I changed Visual Studio to 2019 and Torchvision branch is nightly.

git clone https://github.com/pytorch/vision.git
cd vision
git checkout nightly
Download https://download.pytorch.org/libtorch/nightly/cu102/libtorch-win-shared-with-deps-latest.zip
conda create --name test python=3.6
conda activate test
conda install -c conda-forge libjpeg-turbo
conda install -c anaconda libpng
conda install -c anaconda zlib
mkdir build
cd build
SET DISTUTILS_USE_SDK=1
"C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvars64.bat"
cmake -DUSE_PYTHON=OFF -DWITH_CUDA=on -DCMAKE_PREFIX_PATH="C:\Users\user\Desktop\libtorch-win-shared-with-deps-latest\libtorch"  DCMAKE_BUILD_TYPE=Release -A x64 ..
cmake --build . --config Release

[zhiqwang]

It still requires python.

Seems that that’s a known issue before https://github.com/pytorch/vision/issues/2692#issuecomment-1009783544 .