test Gurobi v12 on Linux #59

	##############################################################################
	# GitHub Actions Workflow to test building PolyFit with GCC
	#
	# Copyright (C) 2022 Liangliang Nan <liangliang.nan@gmail.com>
	#
	# Licensed under GNU LGPL.3, see LICENCE file
	##############################################################################
	name: test-build-gcc

	on: [push, pull_request]

	jobs:
	build:
	name: ${{ matrix.compilers }}
	strategy:
	fail-fast: false
	matrix:
	compilers: [g++-7, g++-8, g++-9, g++-10, g++-11]
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v1
	- name: Install GCC
	run: \|
	sudo apt-get update \|\| true
	if [ "${{ matrix.compilers }}" == "g++-11" ]; then
	sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y
	sudo apt-get update
	fi
	sudo apt-get install ${{ matrix.compilers }}
	- name: Install Dependencies
	run: \|
	sudo apt-get install build-essential libglu1-mesa-dev mesa-common-dev libxrandr-dev libxinerama-dev libxcursor-dev libxi-dev libboost-all-dev libcgal-dev qt5-default
	- name: Build Project
	run: \|
	rm -rf Release
	mkdir Release
	cd Release
	if [ "${{ matrix.compilers }}" == "g++-11" ]; then
	cmake -DCMAKE_CXX_COMPILER=/usr/bin/g++-11 -DCMAKE_BUILD_TYPE=Release ..
	else
	cmake -DCMAKE_CXX_COMPILER=${{ matrix.compilers }} -DCMAKE_BUILD_TYPE=Release ..
	fi
	make

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