Dependencies #17

	name: Dependencies

	on:
	workflow_call:
	outputs:
	cache_key:
	description: "GH Actions Cache key associated with the built dependencies"
	value: ${{ jobs.build_dependencies.outputs.cache_key }}
	schedule:
	# Rebuild dependencies cache from the "main" branch at the beginning of a new day,
	# so it is accessible from other branches' PRs
	- cron: "10 0 * * *"

	concurrency:
	group: deps-${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	jobs:
	build_dependencies:
	name: Build [ubuntu]
	runs-on: ubuntu-latest
	outputs:
	cache_key: ${{ steps.get-cache-key.outputs.cache_key }}
	steps:
	- uses: actions/checkout@v4

	- name: Generate dependencies cache key
	id: get-cache-key
	run: \|
	echo "cache_key=deps-`date +%y-%m-%d`-`cat docker/build_deps.sh \| shasum`" >> $GITHUB_OUTPUT

	- name: Cache lookup
	uses: actions/cache/restore@v4
	id: cache-lookup
	with:
	path: deps
	key: ${{ steps.get-cache-key.outputs.cache_key }}
	lookup-only: true

	- name: Set up build dependencies
	if: steps.cache-lookup.outputs.cache-hit != 'true'
	run: \|
	sudo apt-get update
	sudo apt-get install -qy build-essential \
	gdb \
	curl \
	python3.10 \
	python3-pip \
	cmake \
	ninja-build \
	pkg-config \
	bison \
	libfl-dev \
	libbenchmark-dev \
	libgmock-dev \
	libz-dev

	- name: Fetch & build non packaged dependencies
	if: steps.cache-lookup.outputs.cache-hit != 'true'
	run: \|
	mkdir -p deps
	cd deps
	../docker/build_deps.sh

	- name: Cache save
	if: steps.cache-lookup.outputs.cache-hit != 'true'
	uses: actions/cache/save@v4
	with:
	path: deps
	key: ${{ steps.get-cache-key.outputs.cache_key }}

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