iOS

Improve cxx17 standard detection #1026

	name: iOS

	# https://www.jeffgeerling.com/blog/2020/running-github-actions-workflow-on-schedule-and-other-events
	on:
	push:
	pull_request:
	schedule:
	- cron: '0 2 * * SUN'

	jobs:
	build-ios:
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	os: [macos-11]

	steps:
	# https://github.com/marketplace/actions/cancel-workflow-action
	- name: Cancel Previous Runs
	uses: styfle/[email protected]
	with:
	access_token: ${{ github.token }}

	- name: Checkout repository
	uses: actions/checkout@v3

	- name: Print system information
	run: \|
	sysctl -a \| grep machdep.cpu
	sysctl -a \| grep logical

	- name: Print OS information
	run: system_profiler SPSoftwareDataType

	- name: Install dependencies
	run: brew install python

	- name: Build ios framework
	run: \|
	mkdir build
	cd build
	python ../platforms/ios/build_framework.py ios

Provide feedback