Fix conditional check for CMAKE_BUILD_TYPE #1767

	name: linkchecker

	on:
	workflow_dispatch:
	push:
	pull_request:
	branches: [ develop ]

	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref && github.ref \|\| github.run_id }}
	cancel-in-progress: true

	permissions:
	contents: read

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: get
	uses: actions/checkout@v4

	- name: install
	run: \|
	sudo apt install -y libunwind-dev
	sudo apt install -y graphviz
	sudo apt install -y --no-install-recommends doxygen
	sudo apt install -y cmake
	pip3 install linkchecker

	- name: build
	run: \|
	mkdir build
	cd build
	cmake -DHDF5_BUILD_DOC:BOOL=ON ..
	make doxygen

	- name: check
	run: \|
	cd build/hdf5lib_docs/html
	linkchecker --no-warnings --ignore-url=eigen.tuxfamily.org --ignore-url=/doxygen.css \
	--ignore-url=gnu.org --ignore-url=en.wikipedia.org \
	--ignore-url=help.hdfgroup.org --ignore-url=libpng.org \
	--ignore-url=my.cdash.org --ignore-url=www.oreilly.com \
	--ignore-url=preshing.com --ignore-url=semver.org \
	--ignore-url=sourceforge.net --ignore-url=www.youtube.com \
	--ignore-url=youtu.be \
	--check-extern --threads=2 ./index.html
	#continue-on-error: true

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