fixing some warnings #295

	name: Documentation

	on:
	push:
	branches:
	- master

	# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
	permissions:
	contents: read
	pages: write
	id-token: write

	jobs:
	docs:
	runs-on: ubuntu-20.04
	environment:
	name: github-pages
	url: ${{ steps.deployment.outputs.page_url }}
	steps:
	- uses: actions/checkout@v3
	with:
	submodules: recursive

	- name: Prepare Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.9'
	cache: 'pip' # caching pip dependencies
	- run: pip install -r ./docs/requirements.txt

	- name: Prepare Vulkan SDK
	uses: humbletim/install-vulkan-sdk@v1.2
	with:
	version: 1.4.309.0
	cache: true

	- name: Apt dependencies
	shell: bash
	run: \|
	sudo apt -y update
	sudo apt install -y xorg-dev \
	libxinerama-dev \
	libglu1-mesa-dev \
	freeglut3-dev \
	mesa-common-dev \
	doxygen
	- name: Update CMake
	uses: ssrobins/install-cmake@v1
	with:
	version: 3.24.3
	cache: true

	- name: Build Documentation
	shell: bash
	run: \|
	mkdir bld
	cd bld
	cmake --version
	cmake .. -DBUILD_DOC=ON
	cmake --build . --target sphinx --config Release
	- name: Setup Pages
	uses: actions/configure-pages@v2
	# - name: Setup tmate session
	# uses: mxschmitt/action-tmate@v3
	- name: Upload artifact
	uses: actions/upload-pages-artifact@v1
	with:
	# Upload entire repository
	path: './build/html'
	- name: Deploy to GitHub Pages
	id: deployment
	uses: actions/deploy-pages@v1

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