Running examples: Dependency problems, Linux target, errors in codegen_nvvm

[welahi]

System: Alma Linux 8.10
CUDA: 12.6.3

I cloned the Rust-CUDA and tried to compile examples/cuda/cpu/add using cargo run, having Rust nightly installed. The rust-toolchain file makes rustup install 1.59.0-nightly. However, the log-crate, which is required in version 0.4.25, needs Rust 1.60.0 or higher.

Changing the toolchain nightly-2022-04-07 leads to a similar error, where openssl-sys v0.9.104 needs 1.63.0 or higher.

Then, I removed the toolchain-file to just use the newest version of the rustc. The problem with the dependencies was solved, but the buildscript of rustc_codegen_nvvm nags about the target. In the buildscript I found this uncommented match arm

// NOTE(RDambrosio016): currently disabled because of weird issues with segfaults and building the C++ shim
// "x86_64-unknown-linux-gnu" => "linux-x86_64",

Is Linux basically not supported?

I removed the comment and tried again, this time getting a bunch of errors while trying to compile codegen_nvvm. Some of them where solved running rustup component add rust-src rustc-dev llvm-tools-preview. However, I'm stuck here now:

1. I still get the error that the extern crate rustc_attr could not be found, and the suggested solution is again to install the llvm tools, which I already did.
2. More importantly, I get 104 other errors like use rustc_codegen_ssa::traits::BaseTypeMethods;: no BaseTypeMethods in traits in crates/rustc_codegen_nvvm/src/abi.rs:9:5, which I have no idea how to solve.

Does anyone know how to resolve the issues?