Introduction

This OpenEmbedded layer provides the rust compiler, tools for building packages (cargo), and a few example projects.

What works:

• MACHINE="beaglebone" (TARGET_SYS=arm-poky-linux-gnueabi)
• Building rust-native, rust-cross, rust-hello-world, cargo-native
• Running/using all of these (including rust-hello-world)

What doesn't:

• Probably some of the untested things

What's untested:

• rust (built for target)
• Other TARGETs

Common issues when packaging things using cargo

You may run into errors similar to:

| src/lib.rs:12:1: 12:35 error: can't find crate for `ffi`
| src/lib.rs:12 extern crate "openssl-sys" as ffi;
|               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Where a "-sys" crate (or other crate) is not found. These are typically caused by a crate's Cargo.toml including triplet-specific dependencies and then using the crate based on a feature (most often, #[cfg(unix)]). Until cargo and it's ecosystem get their act together, you'll need to supply patches to the misbehaving packages. See recipies/cargo/cargo_*.bb for an example of how to do this.

TODO

• -crosssdk and -buildsdk packages
• Upstream local rustc patches for libdir and bindir support
• add bitbake fetch support for crates.io
• add required cargo package registry clones in SRC_URI to prevent the need for network when building.

Pitfalls

• TARGET_SYS must be different from BUILD_SYS. This is due to the way configuration options are tracked for different targets.

Dependencies

On the host: unknown

On the target: unknown

Maintainer(s) & Patch policy

Open a Pull Request.

The master branch supports the latest master of poky. When poky creates releases, we will create a branch with the same name as the poky release. This release branch should always work with that poky release. Note that these release branches will typically be less tested than the master branch.

Copyright

MIT OR Apache-2.0 - Same as rust