Merge pull request #57 from stefanoweidmann/tcl9 #27

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

	name: Linux CI

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

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2
	- name: Install dependencies
	run: \|
	sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
	sudo apt-get update -qq
	sudo apt-get install -y gcc-11 g++-11
	sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-11 70 --slave /usr/bin/g++ g++ /usr/bin/g++-11
	sudo apt-get install -y tcl8.6-dev tk8.6-dev libreadline-dev expect
	- name: configure
	run: \|
	autoreconf -vif
	/usr/bin/libtoolize --install
	./configure --with-tcl=/usr/lib/tcl8.6 --with-tk=/usr/lib/tk8.6
	- name: make
	run: make
	- name: install
	run: sudo make install
	# - name: test
	# run: tclsh tests.tcl

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