This repository shows how to use GitHub actions to test a Rust library on different CPU architectures:

• 64-bit little-endian x86_64
• 32-bit big-endian PowerPC

It uses setup-cross-toolchain-action to run the actions for x86_64-unknown-linux-gnu and powerpc-unknown-linux-gnu. The rust.yml file shows how the action is configured.

The library can be seen in action by running the example to print out platform CPU architecture, endianness and pointer width (usize::BITS).

> cargo run --example platform-info
CPU architecture: aarch64
Endianness: little-endian
Pointer width (usize::BITS): 64 bits

The library includes few tests, which also print out the platform info. Here's how to run the tests manually on different platforms.

Running the tests for these systems is usually trivial because most computers are 64-bit little-endian. Just run:

cargo test -- --nocapture

If the system is not 64-bit little-endian, then install and use cross:

// install docker or podman, on Ubuntu: apt-get -y install podman
cargo install cross
cross test --target x86_64-unknown-linux-gnu -- --nocapture

Install and use cross:

// install docker or podman, on Ubuntu: apt-get -y install podman
cargo install cross
cross test --target powerpc-unknown-linux-gnu -- --nocapture

All files and source code are licensed under Creative Commons Zero (CC0-1.0).