Cannot build from source with system Rust install
muke101 opened this issue · 4 comments
I'm running Gentoo and have Rust installed via my package manager (nightly enabled). This means I can't use rustup to install racer, so I'm trying to build from source and install that. When building racer I get the following error:
error[E0463]: can't find crate for `rustc_ast`
--> src/racer/lib.rs:16:1
|
16 | extern crate rustc_ast;
| ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
|
= help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`
For more information about this error, try `rustc --explain E0463`.
I definitely have the missing components installed with my systems Rust install, so I'm unsure why I'm getting this error. Can anyone provide some help on this or do I really have to be using rustup to get racer to work?
This means I can't use rustup to install racer,
I'm not quite sure what you mean here, as rustup can never be used to install racer.
You must have the requisite components, including rustc-dev, available to compile racer, and I highly doubt rustc-dev is bundled with any package manager install
Can you clarify a little on what rustc-dev is? Is that a separate binary? Gentoo doesn't have any -dev packages and should contain all the necessary build components in it's packages.
Ah, it's just another component ok. Rust doesn't have a use flag to enable this so will have to request it's added or something, but thanks for the help anyway.