Overview

ppx_cstubs is a ppx-based preprocessor for stub generation with ctypes.

ppx_cstubs creates two files from a single ml file: a file with c stub code and a ml file with all additional boilerplate code.

Contents

• Calling C functions from OCaml
• Enum Types
• Struct and Union Types
• Dealing with Opaque Types and Integers
• Retrieving Constants
• C #include Guards
• Static OCaml Callbacks
• Pointers to C Objects
• Scoping Rules

not yet documented

Consult the README.md in the meanwhile…

• merlin (how to configure your editor? ppx_cstubs.merlin can only be used inside your editor, not inside build rules)
• compilation
• dune integration - see also this example
• cross package dependencies with ppx_cstubs -pkg ...