Tidy up CMake for NCCL

Summary:
Use HINTS instead of PATHS for find_library so that you can specify
-DNCCL_ROOT_DIR and it will use this NCCL installation regardless of
what else is installed on your system. Also add a path hint to include
the default base path for NCCL 2 libraries.
Closes https://github.com/caffe2/caffe2/pull/1152

Reviewed By: Yangqing

Differential Revision: D5740053

Pulled By: pietern

fbshipit-source-id: 43f0908a63e8a9b90320dece0bbb558827433b48
2 files changed
tree: f577d21e31efc34720faffaaf1227436f847ca80
  1. .travis/
  2. caffe/
  3. caffe2/
  4. cmake/
  5. conda/
  6. docker/
  7. docs/
  8. scripts/
  9. third_party/
  10. .Doxyfile
  11. .Doxyfile-c
  12. .Doxyfile-python
  13. .gitignore
  14. .gitmodules
  15. .travis.yml
  16. appveyor.yml
  17. cmake_uninstall.cmake.in
  18. CMakeLists.txt
  19. LICENSE
  20. Makefile
  21. PATENTS
  22. README.md
  23. release-notes.md
README.md

Caffe2

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Caffe2 is a lightweight, modular, and scalable deep learning framework. Building on the original Caffe, Caffe2 is designed with expression, speed, and modularity in mind.

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