Do not set the triplet if it is already set. #15221

	name: build-docs
	on:
	push:
	paths-ignore:
	- '.github/workflows/quarto-render.yml'
	- '_quarto.yml'
	- 'quarto-materials/*'
	- '**/.md'
	- 'tiledb/doxygen/source/*'
	- 'tiledb/sm/c_api/tiledb_version.h'
	pull_request:
	branches:
	- '' # must quote since "" is a YAML reserved character; we want a string
	paths-ignore:
	- '.github/workflows/quarto-render.yml'
	- '_quarto.yml'
	- 'quarto-materials/*'
	- '**/.md'
	- 'tiledb/doxygen/source/*'
	- 'tiledb/sm/c_api/tiledb_version.h'

	jobs:
	build:
	runs-on: ubuntu-22.04
	if: ${{ startsWith(github.ref , 'refs/tags') != true && startsWith(github.ref , 'build-') != true }}
	timeout-minutes: 90
	name: Build Docs
	steps:
	- uses: actions/checkout@v3
	- name: 'Print env'
	run: \|
	echo "'uname -s' is:"
	echo "uname: " $(uname)
	echo "uname -m: " $(uname -m)
	echo "uname -r:" $(uname -r)
	echo "uname -s: " $(uname -s)
	echo "uname -v: " $(uname -v)
	printenv
	shell: bash

	- name: Set up Python
	uses: actions/setup-python@v4

	- name: Install Doxygen (linux only)
	run: \|
	set -e pipefail
	sudo apt-get update
	# Install doxygen before running cmake
	sudo apt-get install -y doxygen
	pip install virtualenv
	shell: bash
	if: ${{ runner.os == 'Linux' }}

	- name: Build Doxygen Docs (linux only)'
	run: \|
	# Build the documentation (this does not deploy to RTD).
	cd $GITHUB_WORKSPACE/tiledb/doxygen;
	./local-build.sh;
	shell: bash
	if: ${{ runner.os == 'Linux' }}

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