Hacker News Reader

Comment by steveklabnik | Hacker News Reader

1. In a sense, anything LLVM supports. Some stuff is more first-class than others, of course. We test every commit on x86, x86_64, and ARM.

2. Exists, but isn't particuarly easy. The biggest hurdle is getting a copy of the standard library for the target platform, then it's pretty easy. It's gonna be a focus in the near-term.

View on HN

Thank you for such a prompt answer.

EDIT:

Quick googling revealed that Rust doesn't work with musl libc yet. It will be really nice when it will be fixed.

There is actually preliminary support: https://github.com/rust-lang/rust/pull/24777

Making this work well is a very high priority.

Alas, ARM describes a mutually incompatible family of related ISAs. Which ARM(s) is Rust tested on? V7-A, V6, V7-M, V4T?

Ah, so you know what: I thought we tested Android on ARM, but apparently it's x86 and x86_64 too: http://buildbot.rust-lang.org/buildslaves/linux-64-x-android...

There's a community member that keeps the iOS build green, I forget which ARM that is.

We do test Android on ARM. That's an x86_64 buildbot which builds a cross-compiler to Android on ARM and executes a full test suite on Android emulator using a remote testing support which even includes running gdb remotely.

The official tested support is for V7-A, but V6 support also is in tree.

Works for me on ARMv8 (aarch64): https://github.com/dpc/titanos , and I expect it to work on anything that LLVM supports.

Reply on news.ycombinator.com