% Using Rust without the Standard Library

<small>There is a new edition of the book and this is an old link.</small>

> Rust’s standard library provides a lot of useful functionality, but assumes support for various features of its host system: threads, networking, heap allocation, and others.
> There are systems that do not have these features, however.

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This particular chapter has moved to [the Unstable Book][2].

* **[In the Unstable Rust Book: `lang_items` — Writing an executable without stdlib][2]**
* <small>[In the first edition: Ch 4.12 — Using Rust without the Standard Library][1]</small>


[1]: https://doc.rust-lang.org/1.30.0/book/first-edition/using-rust-without-the-standard-library.html
[2]: ../unstable-book/language-features/lang-items.html#writing-an-executable-without-stdlib