liyistc/rules_ocaml

OCaml rules for Bazel

OCaml rules for Bazel

Rules

• ocaml_native_binary
• ocaml_bytecode_binary
• ocaml_interface

Overview

Build OCaml with Bazel. Very experimental. API is expected to change.

Setup

This is a wrapper around ocamlbuild. Ensure that the OCaml toolchain (ocamlbuild, ocamlfind, etc) is reachable in your PATH. TODO: have ocaml_repositories download the toolchain.

Add the following to your WORKSPACE file.

git_repository(
    name = "io_bazel_rules_ocaml",
    remote = "https://github.com/jin/rules_ocaml.git",
    commit = "de567d0e6653f9e8208a42bfe26b30d58e6beeaa",
)

load("@io_bazel_rules_ocaml//ocaml:ocaml.bzl", "ocaml_repositories")
ocaml_repositories() 
# this downloads the OPAM precompiled binaries into your bazel cache, but doesn't use them directly yet.

and this to your BUILD files.

load("@io_bazel_rules_ocaml//ocaml:ocaml.bzl", "ocaml_native_binary", "ocaml_bytecode_binary")

Examples

ocaml_native_binary

Generates a native binary.

ocaml_native_binary(
    name = "hello_world",
    srcs = glob(["examples/*.ml"]),
    opam_packages = ["pkg_foo", "pkg_bar"],
    src_root = "examples/hello_world.ml", # Optional, defaults to the first main.ml found while loading the sources.
)

ocaml_bytecode_binary

Generates a bytecode binary.

ocaml_bytecode_binary(
    name = "hello_world",
    srcs = glob(["examples/*.ml"]),
    opam_packages = ["pkg_foo", "pkg_bar"],
    src_root = "examples/hello_world.ml", # Optional, defaults to the first main.ml found while loading the sources.
)

ocaml_interface

Generates a .mli file of the source.

ocaml_interface(
    name = "hello_world_interface",
    src = "examples/hello_world.ml",
)

Projects using rules_ocaml

• https://github.com/jin/scheme.ml