Ubuntu 20 is way too old. #296

	name: C/C++ CI

	concurrency:
	group: environment-${{ github.head_ref }}
	cancel-in-progress: true

	on: [push, pull_request]

	jobs:
	build-linux:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: apt
	run: sudo apt update && sudo apt install bison flex lua5.3
	- name: make
	run: make

	build-macos:
	runs-on: macos-latest
	steps:
	- uses: actions/checkout@v3
	- name: brew
	run: brew install python lua@5.4
	- name: make
	run: \|
	make

	build-windows:
	runs-on: windows-latest
	defaults:
	run:
	shell: msys2 {0}
	steps:
	- uses: msys2/setup-msys2@v2
	with:
	update: true
	msystem: UCRT64
	install: >-
	make
	mingw-w64-ucrt-x86_64-gcc
	mingw-w64-ucrt-x86_64-lua
	mingw-w64-ucrt-x86_64-nsis
	bison
	flex
	zip
	git
	- uses: actions/checkout@v3
	- name: build
	run: \|
	make LDFLAGS="-s -static" CFLAGS="-g -Os"
	- name: package
	run: \|
	make ack-setup.exe
	- name: upload setup
	uses: actions/upload-artifact@v4
	with:
	name: ${{ github.event.repository.name }}.${{ github.sha }}
	path: ack-setup.exe

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