You are right, there are only two dots (what is their role by the way ?) (edit: the third one seems to have been added by the forum since there are only two in my text)
Here are the error message when using the basic command line 
CMake Error at D:/Yggdrasil/Programmation/PyTorch/libtorch/share/cmake/Caffe2/public/cuda.cmake:283 (message):
CUDA support not available with 32-bit windows.  Did you forget to set
Win64 in the generator target?
Call Stack (most recent call first):
D:/Yggdrasil/Programmation/PyTorch/libtorch/share/cmake/Caffe2/Caffe2Config.cmake:88 (include)
D:/Yggdrasil/Programmation/PyTorch/libtorch/share/cmake/Torch/TorchConfig.cmake:39 (find_package)
CMakeLists.txt:3 (find_package)