visual guide : pytorch c++ api (libtorch) setting on vs2017 , no CMake

visual guide for pytorch 1.0 c++ api on VS2017 , with no CMake (cpu only)

step 1 : download libtorch on https://pytorch.org/

stable -> windows -> libtorch -> c++ -> None(cpu only)

step 2 : unzip to some folder (ex d:\test\libtorch )

libtorch-win-shared-with-deps-latest.zip -> d:\test\libtorch

step 3 : create new c++ project on VS2017

step 4 : change project ->> win64 release <<- IMPORTANT!!!

• some function (ex: torch::jit::load ) of torchlib don't work on debug conf. see ( pytorch/pytorch#15589 )

For MSVC, std::string is not defined the same for the configurations Debug and Release. Since we built libtorch with the Release configuration, if you try to use the Debug configuration when compiling the executable, the std::string object could not be passed into the torch library, and hence the error.

step 5 : change project setting

1. add include directory : D:\test\libtorch\include , D:\test\libtorch\include\torch\csrc\api\include
2. add lib : D:\test\libtorch\lib\torch.lib , D:\test\libtorch\lib\caffe2.lib , D:\test\libtorch\lib\c10.lib
3. on c/C++ tab , "SDL checks" to "No"
4. on c/c++ -> Language tab , "Conformance mode" to "No"

step 6 : test with some code

https://pytorch.org/cppdocs/

It works!!!

• before execute , copy DLL files ( torch.dll , c10.dll , caffe2.dll .... )

model load toturial code ( https://pytorch.org/tutorials/advanced/cpp_export.html )

It works!!!