add text reference to example codes #50

	name: Platform GNU/Linux

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	build:
	name: ${{ matrix.config.name }}
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	config:
	- name: "Ubuntu Latest with GCC 12"
	compiler: gcc
	compiler_ver: 12
	- name: "Ubuntu Latests with Clang 15"
	compiler: clang
	compiler_ver: 15
	steps:
	- name: Prepare specific Clang version
	if: ${{ matrix.config.compiler == 'clang' }}
	run: \|
	sudo apt install clang-${{ matrix.config.compiler_ver}}
	sudo update-alternatives --install /usr/bin/c++ c++ /usr/bin/clang++-${{ matrix.config.compiler_ver}} 100
	sudo update-alternatives --install /usr/bin/cc cc /usr/bin/clang-${{ matrix.config.compiler_ver}} 100
	- name: Prepare specific GCC version
	if: ${{ matrix.config.compiler == 'gcc' }}
	run: \|
	sudo apt install g++-${{ matrix.config.compiler_ver}}
	sudo update-alternatives --install /usr/bin/c++ c++ /usr/bin/g++-${{ matrix.config.compiler_ver}} 100
	sudo update-alternatives --install /usr/bin/cc cc /usr/bin/gcc-${{ matrix.config.compiler_ver}} 100
	- uses: actions/checkout@v4
	with:
	submodules: 'true'
	- name: Configure
	run: cmake -S . -B build
	- name: Build
	run: cmake --build build
	- name: Run tests
	run: \|
	cd build
	ctest --rerun-failed --output-on-failure

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