Add IntelLLVM support & Spack-based CI builds #22

	name: Intel
	on:
	push:
	branches:
	- develop
	pull_request:
	branches:
	- develop

	# Use custom shell with -l so .bash_profile is sourced which loads intel/oneapi/setvars.sh
	# without having to do it in manually every step
	defaults:
	run:
	shell: bash -leo pipefail {0}

	jobs:
	Intel:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	compilers: ["CC=icc FC=ifort", "CC=icx FC=ifx"]

	steps:

	- name: checkout-wrf_io
	uses: actions/checkout@v2
	with:
	path: wrf_io

	# See https://software.intel.com/content/www/us/en/develop/articles/oneapi-repo-instructions.html
	- name: install-dependencies
	run: \|
	wget https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB
	sudo apt-key add GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB
	rm GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB
	echo "deb https://apt.repos.intel.com/oneapi all main" \| sudo tee /etc/apt/sources.list.d/oneAPI.list
	sudo apt-get update
	sudo apt-get install intel-oneapi-openmp intel-oneapi-compiler-fortran intel-oneapi-compiler-dpcpp-cpp-and-cpp-classic
	sudo apt-get install libnetcdf-dev libnetcdff-dev
	echo "source /opt/intel/oneapi/setvars.sh" >> ~/.bash_profile

	- name: build_wrf_io
	run: \|
	cd wrf_io
	mkdir build
	cd build
	cmake ..
	make VERBOSE=1

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