"Getting started" and "Install Rust" don't mention that Linux users need a linker

[skierpage]

What needs to be fixed?

I returned to building rust programs on Fedora 35, ran rustup update, and re-read Getting started. I ran straight into error: linker cc not found. If you Google this seems to be an extremely common problem, you need to install gcc, or build-essentials, or whatever (I must have uninstalled the linker in the interim.) But there is no mention of this in the official docs.

Page(s) Affected

https://www.rust-lang.org/learn/get-started
https://www.rust-lang.org/tools/install

Suggested Improvement

Something like:

rustup installs the Rust compiler and several other tools, but on Linux you will need to install a linker program.

On Fedora, I think the minimal install is sudo dnf install gcc.

[senekor]

duplicate of #1379