Solvedarrayfire NVCC does not support Apple Clang version 8.x

Error message: nvcc fatal : The version ('80000') of the host compiler ('Apple clang') is not supported

Steps to fix:

1. Log in to https://developer.apple.com/downloads/
2. Download Xcode CLT (Command Line Tools) 7.3
3. Install CLT
4. Run sudo xcode-select --switch /Library/Developer/CommandLineTools
5. Verify that clang has been downgraded via clang --version

Source: http://stackoverflow.com/a/36590330/701646

Edit: Update to 7.3 and fail at 8.0

@joseph-zhong, it looks like you're using Xcode 8.3, which CUDA (v8.0.61) does not yet support. :(

Downgrading to CLT 8.2 should work.

For reference:

1. Log in to https://developer.apple.com/downloads/
2. Download Xcode CLT (Command Line Tools) 8.2
3. Install CLT
4. Run sudo xcode-select --switch /Library/Developer/CommandLineTools
5. Verify that clang has been downgraded via clang --version

I have CUDA 8.0.46, OS X 10.12 and Xcode 8.1 but still have the same issue.

First of all, CUDA 8.0 isn't widely available yet as it hasn't been officially released. Second, even CUDA 8 doesn't work with the current version of the Apple LLVM (version 8.0.0). It produces the following error message:
nvcc fatal : The version ('80000') of the host compiler ('Apple clang') is not supported

To switch Xcode CLT back to 8.1 run this:
sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer

Great news - CUDA 8.0.55 now supports Xcode 8!

Those of you who downgraded to CLT 7.3 need to upgrade to CLT 8.x, otherwise building the CUDA backend will fail due to a missing <string.h>.