Adding packaging for linux #4

	name: Release

	on:
	push:
	tags:
	- 'v[0-9]+.[0-9]+.[0-9]+'

	jobs:
	build:
	runs-on: ubuntu-22.04
	steps:
	- name: Checkout source
	uses: actions/checkout@v2
	- name: Cache Cargo
	uses: actions/cache@v3
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	target
	key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
	- name: Cache LLVM
	id: cache-llvm
	uses: actions/cache@v3
	with:
	path: ./llvm
	key: llvm-11.1.0
	- name: Cache QBE
	id: cache-qbe
	uses: actions/cache@v3
	with:
	path: ./qbe/qbe-1.2
	key: qbe-1.2
	- name: Install LLVM (11.1.0)
	run: \|
	mkdir -p llvm
	curl -L "https://github.com/llvm/llvm-project/releases/download/llvmorg-11.1.0/clang+llvm-11.1.0-x86_64-linux-gnu-ubuntu-20.10.tar.xz" > llvm.tar.xz
	tar x --xz -C llvm --strip-components=1 -f llvm.tar.xz
	if: steps.cache-llvm.outputs.cache-hit != 'true'
	- name: Setup LLVM
	run: \|
	sudo apt-get update
	sudo apt-get install -y libtinfo6
	echo "PATH=$(pwd)/llvm/bin:$PATH" >> $GITHUB_ENV
	echo "LLVM_CONFIG=$(pwd)/llvm/bin/llvm-config" >> $GITHUB_ENV
	- name: Install QBE
	run: \|
	mkdir -p qbe
	cd qbe
	wget https://c9x.me/compile/release/qbe-1.2.tar.xz
	tar -xf qbe-1.2.tar.xz
	cd qbe-1.2
	make
	if: steps.cache-qbe.outputs.cache-hit != 'true'
	- name: Setup QBE
	run: \|
	ls -la ./qbe
	ls -la ./qbe/qbe-1.2
	echo "PATH=$(pwd)/qbe/qbe-1.2:$PATH" >> $GITHUB_ENV
	- name: Build reference compiler
	run: cargo build
	- name: Install ext dependencies
	run: ./configure-libgc.sh
	- name: Build package
	run: \|
	cd selfhost
	./gen-pkg/gen.sh linux
	- name: Release
	uses: softprops/action-gh-release@v2
	with:
	files:
	"selfhost/gen-pkg/abra-linux.tar.gz"

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