MS Visual Studio throws an error related to CCCL's requirement for C++17

Accelerated Computing CUDA CUDA NVCC Compiler
1

When I include cccl/atomic in a .cu file on VisualStudio 2022, CUDA Toolkit 13.1, I get an error related to requiring C++ 17:

#error: libcu++ requires at least C++ 17. Define CCCL_IGNORE_DEPRECATED_CPP_DIALECT to suppress this message.

Screenshot 2026-03-04 100859

The error comes from these lines in the cpp_dialect.hpp file:

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I have enabled C++17 in the project, and when I hover over “_CCCL_STD_VER”, I see that it is defined to be “2017”:

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image535×166 14.2 KB

So I should not be reaching the error statement. Does anyone have any suggestions for whether this is a VisualStudio problem or a CUDA/nvcc problem, and how I might resolve it?

Thank you,

Derek

2

this may be of interest

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Thank you. I will give it a try.