[BUG] CUDA detection does not work on Clang #55
Description
spy uses this code:
#if defined(__CUDACC__)
# define SPY_ACCELERATOR_SUPPORTS_CUDA
constexpr inline auto cuda = cuda_t<__CUDACC_VER_MAJOR__, __CUDACC_VER_MINOR__, 0>{};
#elif defined(SPY_DOXYGEN_INVOKED)
constexpr inline auto cuda = **implementation-defined**;
#else
constexpr inline auto cuda = cuda_t<-1,-1,-1>{};
#endifHowever, when clang compiles CUDA, it defines __CUDACC__ but not __CUDACC_VER_MAJOR__ and __CUDACC_VER_MINOR__.