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📝 Docs: Clarify CMake version requirement for CUDA dialects

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Adds a note explaining that default CMake versions on systems like
Ubuntu 22.04 LTS might not support newer CUDA dialects (e.g., CUDA 20),
leading to specific build errors.

Recommends installing a newer CMake via the Kitware APT repository
as a resolution. This helps users troubleshoot errors like:
"Target ... requires the language dialect 'CUDA20', but CMake does not know the compile flags..."
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2025-04-04 20:11:59 +08:00
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@@ -38,7 +38,8 @@ Some preparation:
export CUDA_PATH=$CUDA_PATH:/usr/local/cuda
fi
```
- Linux-x86_64 with gcc, g++ and cmake (using Ubuntu as an example)
- Linux-x86_64 with gcc, g++>=11 and cmake>=3.25 (using Ubuntu as an example)
- **Note**: The default CMake version in Ubuntu 22.04 LTS or higher may not support newer CUDA language dialects (e.g., CUDA 20). This can cause errors such as Target "cmTC_xxxxxx" requires the language dialect "CUDA20", but CMake does not know the compile flags to use to enable it. To resolve this, install a newer CMake version, for instance, by adding the Kitware APT repository.
```sh
sudo apt-get update