> For the complete documentation index, see [llms.txt](https://ploegert.gitbook.io/til/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ploegert.gitbook.io/til/programmy/ml/reason/compile-reason-to-native-with-dune.md).

# Compile Reason To Native With Dune

[Dune](https://github.com/ocaml/dune) is "a composable build system for OCaml" with out-of-the-box support for ReasonML. Dune can be used for a lot of things, but in simplest terms it can be used to compile ReasonML programs into native executables.

Considering the following ReasonML program.

```reason
/* hello_reason.re */
print_endline("Hello, Reason!")
```

We can then create the following Dune build file.

```lisp
;; dune
(executable
 (name hello_reason))
```

If we then run `dune build hello_reason.exe`, then Dune will compile the `hello_reason.re` into a `hello_reason.exe` executable that can be found in `build/default`. Run it and see the output.

Read more in the [Quickstart guide](https://dune.readthedocs.io/en/latest/quick-start.html).