(sphNG) give better error message if endianness is wrong #310

	# This is a basic workflow to help you get started with Actions

	name: build

	# Controls when the action will run. Triggers the workflow on push or pull request
	# events but only for the master branch
	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:
	# This workflow contains a single job called "build"
	build:
	# The type of runner that the job will run on
	runs-on: ubuntu-latest

	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	- name: Install gfortran for Linux
	run: sudo apt-get install gfortran

	- name: Check gfortran version
	run: gfortran --version

	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v3

	- name: get a copy of giza
	run: git clone https://github.com/danieljprice/giza

	- name: compile splash
	run: make SYSTEM=gfortran withgiza

	- name: clean
	run: make clean

	- name: compile libexact
	run: make SYSTEM=gfortran libexact

	- name: compile libread
	run: make SYSTEM=gfortran libread

	- name: clean
	run: make clean

	- name: compile splash in single precision
	run: make SYSTEM=gfortran DOUBLEPRECISION=no withgiza

	- name: clean
	run: make clean

	- name: compile splash with debug flags
	run: make SYSTEM=gfortran DEBUG=yes withgiza

Provide feedback