Test C codegen with `-Wextra` #170

	name: OCaml CI

	on:
	push:
	branches: [ "master" ]
	pull_request:
	branches: [ "master" ]

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3

	- name: Install Ubuntu packages
	run: sudo apt install libgc-dev libpcre3-dev -y

	- name: Install Opam
	run: \|
	echo "" \| bash -c "sh <(curl -fsSL https://raw.githubusercontent.com/ocaml/opam/master/shell/install.sh)"

	- name: Cache Opam
	id: cache-opam
	uses: actions/cache@v4
	with:
	path: ~/.opam
	key: ${{ hashFiles('**.opam') }}

	- name: Initialize Opam
	if: steps.cache-opam.outputs.cache-hit != 'true'
	# Disabling sandboxing because it does not work on some versions of Ubuntu.
	run: opam init --auto-setup --disable-sandboxing -y

	- name: Install the dependencies
	if: steps.cache-opam.outputs.cache-hit != 'true'
	run: \|
	opam install . --deps-only --with-test -y
	opam install ocamlformat odoc -y

	- name: Check formatting
	run: opam exec -- dune build @fmt --action-stderr-on-success=must-be-empty

	- name: Unit tests
	run: opam exec ./scripts/test.sh

	- name: End-to-end tests
	run: opam exec ./scripts/test-examples.sh

	- name: C codegen tests
	run: opam exec ./scripts/test-c-codegen.sh

Provide feedback