Use CMake PROJECT_IS_TOP_LEVEL variable instead of project-name hack #314

	name: CI

	on:
	# Run the jobs on either push or a pull_request, but not both.
	push:
	branches:
	- master
	pull_request:
	branches:
	- master

	jobs:
	build-linux:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	include:
	- compiler: gcc
	config: cmake
	- compiler: clang
	config: cmake
	- compiler: clang
	config: asan
	- compiler: clang
	config: tsan
	- compiler: clang
	config: format
	- compiler: clang
	config: scan-build
	- compiler: clang
	config: framing

	steps:
	- uses: actions/checkout@v2
	with:
	submodules: true
	- name: Install Prerequisites
	shell: bash
	run: \|
	sudo apt update
	sudo apt install -y ninja-build libpopt-dev

	- name: Configure Build & Test
	shell: bash
	env:
	CC: ${{ matrix.compiler }}
	run: ./travis.sh ${{ matrix.config }}

	build-macox:
	runs-on: macos-latest
	steps:
	- uses: actions/checkout@v2
	with:
	submodules: true
	- name: Install Prerequisites
	shell: bash
	run: brew install ninja popt

	- name: Configure Build & Test
	shell: bash
	run: ./travis.sh macos

	build-win32:
	runs-on: windows-latest
	steps:
	- uses: actions/checkout@v2
	with:
	submodules: true
	- name: Install Prerequisites
	run: choco install openssl
	- name: Configure Build & Test
	shell: bash
	run: \|
	cmake -E make_directory build/
	cmake -S . -B build/ -DBUILD_EXAMPLES=ON -DCMAKE_C_FLAGS=" /W4"
	cmake --build build/ --config Debug --target INSTALL
	ctest -V ./build/

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