Compile

Single file ​

Most basic command for compiling:

rustc main.rs

Makefile ​

Single file, compile direct to executable.

build:
	rustc main.rs

Crate ​

From a rust script (without a main function), run this command to generate a library:

rustc --crate-type=lib hello.rs

This generates a libhello.rlib file.

Then when compiling the script that uses libhello.rlib, we use the --extern option.

rustc main.rs --extern rary=libhello.rlib && ./main

Sample files for reference:

hello.rs

pub fn greet() {
    println!("Hello World!");
}

main.rs

mod hello;

fn main() {
    hello::greet();
}