Parser docs: Add a link to parser options #1

	name: "meson: clang 10"

	on: [push]

	jobs:
	build:

	runs-on: ubuntu-20.04

	steps:
	- uses: actions/checkout@v1
	- name: Build
	run: \|
	# Prevent blocking apt install on a question during configuring of tzdata.
	export DEBIAN_FRONTEND=noninteractive
	sudo apt update
	sudo apt install libxml2-dev libxml2-utils docbook5-xml docbook-xsl libglibmm-2.4-dev mm-common clang-10 ninja-build python3-setuptools python3-pip --yes
	# Ubuntu 20.04 contains meson 0.53.2, but libxml++ requires meson >= 0.55.0.
	# Install it with pip3 instead of apt.
	sudo pip3 install "meson>=0.55.0"
	export CC=clang-10
	export CXX=clang++-10
	meson setup -Dwarnings=fatal -Dwarning_level=3 -Dwerror=true _build
	cd _build
	meson compile
	- name: Test
	run: \|
	cd _build
	meson test
	- name: Dist
	run: \|
	sudo apt install git --yes
	# dist runs setup again so we need to specify CC and CXX again.
	export CC=clang-10
	export CXX=clang++-10
	cd _build
	meson dist

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