added link to old version of docs, also turned off brew update in macos CI workflow #382

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

	jobs:
	Linux_versions:
	runs-on: ubuntu-latest
	env:
	CC: gcc
	CXX: g++
	strategy:
	fail-fast: true
	matrix:
	jasper-version: [2.0.33, 3.0.3, 4.0.0]
	ccompiler: [clang, gcc]

	steps:
	- name: install-dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install libaec-dev libpng-dev zlib1g-dev libjpeg-dev libopenjp2-7-dev
	if [[ ${{ matrix.ccompiler }} == "clang" ]]; then
	sudo apt-get install clang
	fi

	- name: cache-jasper
	id: cache-jasper
	uses: actions/cache@v3
	with:
	path: ~/jasper
	key: jasper-${{ runner.os }}-${{ matrix.jasper-version }}

	- name: checkout-jasper
	if: steps.cache-jasper.outputs.cache-hit != 'true'
	uses: actions/checkout@v3
	with:
	repository: jasper-software/jasper
	path: jasper
	ref: version-${{ matrix.jasper-version }}

	- name: build-jasper
	if: steps.cache-jasper.outputs.cache-hit != 'true'
	run: \|
	if [[ ${{ matrix.ccompiler }} == "clang" ]]; then
	export CC=clang
	elif [[ ${{ matrix.ccompiler }} == "gcc" ]]; then
	export CC=gcc
	fi
	cd jasper
	mkdir cmake_build
	cd cmake_build
	cmake .. -DCMAKE_INSTALL_PREFIX=~/jasper
	make -j2
	make install

	- name: checkout
	uses: actions/checkout@v3
	with:
	path: g2c

	- name: build
	run: \|
	if [[ ${{ matrix.ccompiler }} == "clang" ]]; then
	export CC=clang
	elif [[ ${{ matrix.ccompiler }} == "gcc" ]]; then
	export CC=gcc
	fi
	cd g2c
	mkdir build
	cd build
	cmake -DJasper_ROOT=~/jasper -DENABLE_OpenJPEG=ON -DUSE_AEC=ON ..
	make -j2 VERBOSE=1

	- name: test
	run: \|
	set -e
	cd $GITHUB_WORKSPACE/g2c/build
	ctest --verbose --output-on-failure --rerun-failed

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