Fix/cmake #50

	name: Header

	on:
	push:
	branches:
	- 'master'
	pull_request:
	workflow_dispatch:

	concurrency:
	group: header-${{ github.event.pull_request.number \|\| github.ref }}
	cancel-in-progress: ${{ github.event_name != 'push' }}

	env:
	TZ: Europe/Berlin

	defaults:
	run:
	shell: bash -Eexuo pipefail {0}

	jobs:
	build:
	runs-on: ubuntu-latest
	name: ${{ matrix.compiler }} ${{ matrix.type }}
	if: github.repository_owner == 'xxsds' \|\| github.event_name == 'workflow_dispatch'
	strategy:
	fail-fast: false
	matrix:
	compiler: ["clang-18", "gcc-14", "gcc-11"]
	type: ["Release", "Debug"]
	container:
	image: ghcr.io/seqan/${{ matrix.compiler }}
	volumes:
	- /home/runner:/home/runner
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	submodules: true

	- name: Get number of processors
	run: echo "NUM_THREADS=$(getconf _NPROCESSORS_ONLN)" >> "$GITHUB_ENV"

	- name: Load ccache
	uses: actions/cache@v4
	with:
	path: /home/runner/.ccache
	save-always: true
	key: ccache-${{ runner.os }}-${{ github.workflow }}-${{ matrix.compiler }}-${{ github.ref }}

	- name: Configure tests
	run: \|
	mkdir bbuild && cd bbuild
	cmake .. -DCMAKE_BUILD_TYPE=${{ matrix.type }} \
	-DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
	-DCMAKE_C_COMPILER_LAUNCHER=ccache \
	-DCMAKE_CXX_FLAGS="-pedantic -Wall -Wextra -Werror -std=c++23" \
	-DSDSL_CEREAL=1 \
	-DSDSL_HEADER_TEST=ON
	make -j${NUM_THREADS} gtest_build

	- name: Build tests
	working-directory: bbuild
	run: \|
	ccache -z
	make -k -j${NUM_THREADS} sdsl_header_test
	ccache -sv

	- name: Run tests
	working-directory: bbuild
	run: ctest . -j${NUM_THREADS} --output-on-failure

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