Updating PR branch to rebase on latest changes, and also save a bit of #5

	name: build all

	on:
	# all branches:
	[ push, pull_request, workflow_dispatch ]
	# trunk only:
	#push:
	# branches: [ "trunk" ]
	#pull_request:
	# branches: [ "trunk" ]

	jobs:
	compile:
	runs-on: ubuntu-latest

	steps:

	- name: Checkout
	uses: actions/checkout@master
	# allow 'git describe' to work, by fetching tags and history
	with:
	fetch-depth: 0
	fetch-tags: true

	- name: Stop committing version.h
	# reject commit if version.h was changed
	run: grep 1969-07-20 ui/anduril/version.h

	- name: Requirements
	run: \|
	sudo apt-get -qqy update
	sudo apt-get -qqy install avr-libc binutils-avr gcc-avr unzip wget

	- name: Cache Atmel DFPs
	id: cache-dfp
	uses: actions/cache@v3
	env:
	cache-name: cache-dfp-files
	with:
	path: arch/dfp
	# new cache whenever the dfp-install script changes
	key: ${{ runner.os }}-${{ env.cache-name }}-${{ hashFiles('bin/dfp-install.sh') }}

	- name: Install Atmel DFPs
	if: steps.cache-dfp.outputs.cache-hit != 'true'
	run: \|
	./make dfp

	- name: Compile All
	run: \|
	./make
	echo "ARTIFACT_NAME=${GITHUB_WORKFLOW}-$(git rev-parse --short ${GITHUB_SHA})-${GITHUB_RUN_NUMBER}" >> "${GITHUB_ENV}"

	- name: Store Artifacts
	uses: actions/upload-artifact@v3
	with:
	name: ${{ env.ARTIFACT_NAME }}
	if-no-files-found: error
	path: \|
	hex/*.hex

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