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README-BUCK.md

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Building ocamlrep with Buck2

Setup

These are things that need to be done once to get going.

Install Buck2 and Reindeer

These commands install the buck2 and reindeer binaries into '~/.cargo/bin'.

    cargo install --git https://github.com/facebook/buck2.git buck2
    cargo install --git https://github.com/facebookincubator/reindeer.git reindeer

Note: Make sure after installing them to configure your PATH environment variable so they can be found.

Install the OCaml package Manager

If you haven't already, install opam.

When opam has been installed execute ~/.ocaml-setup.sh from the root of the distribution. The effect of ocaml-setup.sh is to create symlinks in shim/third/party/ocaml that point into the local opam installation.

Note: The script assumes that OPAM_SWITCH_PREFIX has been set by the way.

Vendor sources & generate buck rules for ocamlrep's Rust dependencies

Reindeer is a a tool that imports Rust crates from crates.io and generates Buck2 build rules for them. Run it from the root of the ocamlrep repository like this.

    reindeer --third-party-dir shim/third-party/rust vendor && \
    reindeer --third-party-dir shim/third-party/rust buckify

That's it, you're all set.

Profit!

Run this command from the root of the repository to build all the targets you can.

    buck2 build root//...

To run all the tests you can, replace build with test in the above command.

More examples and more detail about building with Buck2 are available on the Buck2 website!