build error on loongarch64 about linux-raw-sys

[bjorn3]

I think you need to update

linux-raw-sys/gen/src/main.rs

Line 13 in 4157b89

const LINUX_VERSION: &str = "v5.17";

to a version of linux which supports Loongarch64 and then regenerate the bindings.

[sunfishcode]

Currently all the users of linux-raw-sys that I know of only depend on it on architectures which it supports. Can you say more about the context where you're seeing this error?

[asheplyakov]

I've got the same error when cross-compiling a native rust according to this instruction.

Building tool cargo (stage1:x86_64-unknown-linux-gnu -> stage2:loongarch64-unknown-linux-gnu)
   Compiling linux-raw-sys v0.1.4
error[E0432]: unresolved import `crate::general`
  --> /usr/src/.cargo/registry/src/index.crates.io-6f17d22bba15001f/linux-raw-sys-0.1.4/src/lib.rs:84:16
   |
84 |     use crate::general::{cmsghdr, msghdr};
   |                ^^^^^^^ could not find `general` in the crate root

error[E0433]: failed to resolve: use of undeclared crate or module `general`
  --> /usr/src/.cargo/registry/src/index.crates.io-6f17d22bba15001f/linux-raw-sys-0.1.4/src/lib.rs:67:20
   |
67 | impl PartialEq for general::__kernel_timespec {
   |                    ^^^^^^^ use of undeclared crate or module `general`

error[E0433]: failed to resolve: use of undeclared crate or module `general`
  --> /usr/src/.cargo/registry/src/index.crates.io-6f17d22bba15001f/linux-raw-sys-0.1.4/src/lib.rs:79:13
   |
79 | impl Eq for general::__kernel_timespec {}
   |             ^^^^^^^ use of undeclared crate or module `general`

Some errors have detailed explanations: E0432, E0433.
For more information about an error, try `rustc --explain E0432`.
error: could not compile `linux-raw-sys` (lib) due to 3 previous errors

[heiher]

@asheplyakov The Loongarch support starts from linux-raw-sys v0.3.2. I think you can fetch rust binaries for LoongArch from official using rustup. If you need to cross compile, please refer to this: https://github.com/rust-lang/rust/tree/master/src/ci/docker/host-x86_64/dist-loongarch64-linux

rustup-init (LoongArch): https://github.com/loongarch-rs/tools/releases/tag/rustup-20230525

[sunfishcode]

As mentioned in the previous comment, loongarch64 is now supported. Please file new issues if there are any problems!