pytorch/cmake/Modules_CUDA_fix
Sebastian Messmer bc2e6d10fa Back out "Revert D17908478: Switch PyTorch/Caffe2 to C++14"
Summary: Original commit changeset: 775d2e29be0b

Test Plan: CI

Reviewed By: mruberry

Differential Revision: D18775520

fbshipit-source-id: a350b3f86b66d97241f208786ee67e9a51172eac
2019-12-03 14:33:43 -08:00
..
upstream Back out "Revert D17908478: Switch PyTorch/Caffe2 to C++14" 2019-12-03 14:33:43 -08:00
FindCUDA.cmake
FindCUDNN.cmake Move the detection of cuDNN to FindCUDNN.cmake (#24938) 2019-08-27 06:51:52 -07:00
README.md Add torch.backends.openmp.is_available(); fix some cmake messages (#16425) 2019-01-31 16:15:46 -08:00

This ./upstream subfolder contains fixes for FindCUDA that are introduced in later versions of cmake but cause generator expression errors in earlier CMake versions. Specifically:

  1. a problem where a generator expression for include directories was passed to NVCC, where the generator expression itself was prefixed by -I. As the NNPACK include directory generator expression expands to multiple directories, the second and later ones were not prefixed by -I, causing NVCC to return an error. First fixed in CMake 3.7 (see Kitware/CMake@7ded655f).

  2. Windows VS2017 fixes that allows one to define the ccbin path differently between earlier versions of Visual Studio and VS2017. First introduced after 3.10.1 master version (see Kitware/CMake@bc88329e).

The downside of using these fixes is that ./upstream/CMakeInitializeConfigs.cmake, defining some new CMake variables (added in Kitware/CMake@48f7e2d3), must be included before ./upstream/FindCUDA.cmake to support older CMake versions. A wrapper ./FindCUDA.cmake is created to do this automatically, and to allow submodules to use these fixes because we can't patch their CMakeList.txt.

If you need to update files under ./upstream folder, we recommend you issue PRs against the CMake mainline branch, and then backport it here for earlier CMake compatibility.