Tweak opl example some more #11

	name: ci

	on:
	workflow_dispatch:
	pull_request:
	branches: [ main ]
	push:
	branches: [ main ]

	env:
	CARGO_TERM_COLOR: always
	ARCH: i586

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- name: Cache elf2djgpp
	id: cache-elf2djgpp
	uses: actions/cache@v3
	with:
	path: ~/.cargo/bin/elf2djgpp
	key: ${{ runner.os }}-elf2djgpp
	- uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	cache: true
	rustflags: "-W warnings"
	- name: Install pc-msdosdjgpp-gcc
	env:
	MSDOSDJGPP_URL: https://github.com/andrewwutw/build-djgpp/releases/download/v3.4/djgpp-linux64-gcc1220.tar.bz2
	run: \|
	mkdir -p /tmp/downloads
	# download .tar.bz2, extract, and copy to /usr/local/
	curl -L $MSDOSDJGPP_URL \| tar -xj -C /tmp/downloads/
	sudo cp -r /tmp/downloads/djgpp/* /usr/local/
	# add to PATH
	echo "export PATH=/usr/local/${{ env.ARCH }}-pc-msdosdjgpp/bin:$PATH" >> $GITHUB_ENV
	# clean up
	rm -rf /tmp/downloads
	# test
	"${{ env.ARCH }}-pc-msdosdjgpp-gcc" --version
	- name: Install elf2djgpp
	if: steps.cache-elf2djgpp.outputs.cache-hit != 'true'
	run: \|
	mkdir -p /tmp/elf2djgpp
	cd /tmp/elf2djgpp
	git clone --depth 1 https://github.com/cknave/elf2djgpp.git
	cd elf2djgpp
	rustup default stable
	cargo install --path .
	# clean up
	rm -rf elf2djgpp
	# test
	elf2djgpp --version
	- name: Build
	env:
	CC: ${{ env.ARCH }}-pc-msdosdjgpp-gcc
	run: ./build.sh

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