In the recently released CUDA 9 RC, the __CUDACC_VER__ macro is deprecated. It is set to an error string, so it will cause compilation errors. The recommended macro's to use are __CUDACC_VER_MAJOR__, __CUDACC_VER_MINOR__, and __CUDACC_VER_PATCH__.
I worked around this problem by #undef'ing the error string macro and resetting it to behave as it previously did. Ideally this is addressed in Eigen itself though.
I verified this is a problem in 3.3, but see the macro is still used in trunk.
Thank you for the report. Fixed:
Thanks for the super-fast turnaround!
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