fix recent windows build and add ubuntu-20.04 support #35

	name: dronecan_sitl
	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- '*'
	jobs:
	sitl:
	strategy:
	matrix:
	include:
	- os: ubuntu-24.04
	- os: ubuntu-22.04
	- os: ubuntu-20.04
	runs-on: ${{ matrix.os }}
	timeout-minutes: 10
	steps:
	- uses: actions/checkout@v4
	with:
	submodules: recursive
	fetch-depth: 0

	- name: Install dependencies
	run: \|
	pip install -r requirements.txt
	sudo apt-get install -y gcc-arm-none-eabi linux-modules-extra-$(uname -r)

	- name: Setup GCC for Ubuntu 20.04
	if: matrix.os == 'ubuntu-20.04'
	run: \|
	sudo apt update
	sudo apt install -y gcc-10 g++-10
	sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 100
	sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-10 100

	- name: Build SITL DroneCAN
	run: make sitl_dronecan

	- name: Run SITL for 5 seconds
	run: timeout 5s make run \|\| res=$?; if [[ $res -ne 124 && $res -ne 0 ]]; then exit $res; fi

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