Add CI for ubuntu-22.04. #3

	name: Ubuntu latest CI

	on: push

	jobs:
	Build:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: true
	matrix:
	mpi: [ 'impi' ]
	# mpi: [ 'mpich', 'openmpi', 'impi' ]
	# mpich is borken on ubuntu-24.04LTS and 24.10 see https://bugs.launchpad.net/ubuntu/+source/mpich/+bug/2072338
	# openmpi is borken on ubuntu-24.04LTS and 24.10 see https://github.com/open-mpi/ompi/issues/10726
	# ubuntu 24.10 is not available as github runner, so we are left with Intel's mpi for now.

	env:
	FC: gfortran
	GCC_V: 13

	steps:
	- name: Checkout code
	uses: actions/checkout@v3

	- name: Install Dependencies
	run: \|
	sudo apt install -y gfortran-${GCC_V} cmake
	sudo update-alternatives --install /usr/bin/gfortran gfortran /usr/bin/gfortran-${GCC_V} 100

	- name: Setup MPI ${{ matrix.mpi }}
	uses: mpi4py/setup-mpi@v1
	with:
	mpi: ${{ matrix.mpi }}

	- name: Build and Test
	run: \|
	mpirun --version
	mkdir build
	cmake -S . -B build -Wdev -DCMAKE_INSTALL_PREFIX:PATH="${HOME}/OpenCoarrays" -DCMAKE_BUILD_TYPE:STRING="Debug" ..
	cmake --build build -j $(nproc)
	cmake --build build -t install -j $(nproc) \|\| echo "installation failed"
	ctest --test-dir build --output-on-failure --schedule-random --repeat-until-fail 1 --timeout 200
	cd build
	make uninstall
	echo "Ran with mpi: ${{ matrix.mpi }}"

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