camlp5 ☆

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Description:
Preprocessor and pretty-printer for OCaml

Type: Formula | Latest Version: 8.04.00@1 | Tracked Since: Dec 17, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: ocaml preprocessor metaprogramming parser dsl

Install: brew install camlp5

About:
Camlp5 is a comprehensive preprocessor and pretty-printer for OCaml, extending the language with advanced parsing and syntax manipulation capabilities. It enables the creation of custom syntax extensions and domain-specific languages (DSLs) within OCaml. Its primary value is in tooling and metaprogramming for the OCaml ecosystem.

Key Features:

Extensible grammar for defining new syntax
Powerful syntax tree transformers and quotations
Revised OCaml syntax (revised-ocaml) support
Compatibility with modern OCaml versions

Use Cases:

Creating custom DSLs and syntax extensions for OCaml
Building advanced code analysis and transformation tools
Preprocessing OCaml source files for specialized build pipelines

Alternatives:

ppx – PPX is the modern standard for OCaml metaprogramming; Camlp5 offers deeper control over the grammar and parser but has a steeper learning curve.

License: BSD-3-Clause

Dependencies: camlp-streams, ocaml, pcre2

Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, sonoma, arm64_linux, x86_64_linux

Version History

Detected	Rev	Change	Commit
Nov 3, 2025 6:29am	0	VERSION_BUMP	06ae9e0e
Sep 11, 2025 8:53am	1	VERSION_BUMP	d1a62b4f
Oct 8, 2024 5:30am	0	VERSION_BUMP	c21b6185
Sep 11, 2024 7:30am	0	VERSION_BUMP	6ab4088a
Oct 3, 2023 9:31pm	0	VERSION_BUMP	82518553
Sep 22, 2023 10:20am	0	VERSION_BUMP	b6c0bba6