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# Creating a Library

Let's create a library, and then see how to link it to another crate.

In `rary.rs`:

    pub fn public_function() {
        println!("called rary's `public_function()`");
    }

    fn private_function() {
        println!("called rary's `private_function()`");
    }

    pub fn indirect_access() {
        print!("called rary's `indirect_access()`, that\n> ");

        private_function();
    }

    $ rustc --crate-type=lib rary.rs
    $ ls lib*
    library.rlib

Libraries get prefixed with "lib", and by default they get named after their crate file, but this default name can be overridden by passing the `--crate-name` option to `rustc` or by using the `crate_name` attribute.