Rustup: x86_64-unknown-freebsd does not come with rust-lld

[igalic]

Problem

a (wasm based) project i'm trying to compile on FreeBSD is expecting rust-lld, but it doesn't exist.

Steps

1. follow https://rustup.rs/ to install rustup on a FreeBSD
2. Follow https://docs.joinplu.me/installation/with/source-code to compile Plume (this installs cargo-web)
3. Fail compiling with the following error:

error: linker `rust-lld` not found
  |
  = note: No such file or directory (os error 2)

error: aborting due to previous error
error: Could not compile `plume-front`.

To learn more, run the command again with --verbose.
error: build failed

Notes

Output of rustup --version: rustup 1.18.2 (a0bf3c9cb 2019-05-02)
Output of rustup show:

root@blog:/usr/local/src/Plume # rustup show
Default host: x86_64-unknown-freebsd

installed toolchains
--------------------

stable-x86_64-unknown-freebsd
nightly-2019-03-23-x86_64-unknown-freebsd
nightly-x86_64-unknown-freebsd

installed targets for active toolchain
--------------------------------------

wasm32-unknown-unknown
x86_64-unknown-freebsd

active toolchain
----------------

nightly-2019-03-23-x86_64-unknown-freebsd (overridden by '/usr/local/src/Plume/rust-toolchain')
rustc 1.35.0-nightly (cb2f34dc6 2019-03-22)

root@blog:/usr/local/src/Plume #

[kinnison]

I imagine you need the llvm-tools-preview component installed. If the dependency on rust-lld directly is part of the project you're trying to build then it may be worth their while including that into their documentation.

[kinnison]

It's also possible you may need cargo-binutils installing too, I'm not sure though.

Either way, I don't think this is directly a bug in rustup itself.

[igalic]

on my linux laptop i don't have llvm-tools-preview installed either…
…and neither do i have cargo-binutils installed.
so my assumption is that on linux, rust-lld is just part of the toolchain, whereas on freebsd, it's not.

[igalic]

it seems, i should open this issue upstream:

here's the CI build's configure for Linux:

https://github.com/rust-lang/rust/blob/2ec6f340cd29f289fea1c5a672195ceeaf44c475/src/ci/docker/dist-x86_64-linux/Dockerfile#L96-L105

and here's the configure for FreeBSD:

https://github.com/rust-lang/rust/blob/ef01f29964df207f181bd5bcf236e41372a17273/src/ci/docker/dist-x86_64-freebsd/Dockerfile#L32

[kinnison]

Aha, I apologise for my misunderstanding of the situation then. Good luck.

[dmilith]

Was the process updated? It's FreeBSD which supports LLD linker in base system by default. Why Rust build lack that for FreeBSD? :o

[MikaelUrankar]

Was the process updated? It's FreeBSD which supports LLD linker in base system by default. Why Rust build lack that for FreeBSD? :o

I'll try to get this fixed on FreeBSD side: https://reviews.freebsd.org/D23653

[unrelentingtech]

I just use RUSTFLAGS="-C linker=ld.lld90" (lld from our llvm packages) whenever rust-lld is required (i.e. both for wasm and embedded arm microcontrollers). We don't really need rust-lld. Would be nice if rustc auto detected system llds.

[igalic]

if that auto-detection were possible, would that mean that we could promote FreeBSD to First-Tier platform?

[unrelentingtech]

I don't think the linker is the reason it's not first tier.