Adapt portable_endian.hpp for GNU/Hurd #414

	on:
	push:
	branches:
	- '*'
	pull_request:
	branches:
	- '*'
	release:
	types:
	- published

	jobs:
	base:
	name: Base library ${{ matrix.os }}
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: true
	matrix:
	os: ['ubuntu-latest', 'macos-latest', 'windows-latest']
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-python@v3
	name: Install Python
	with:
	python-version: '3.10'
	- name: Checkout submodules
	run: git submodule update --init --recursive

	- uses: ilammy/msvc-dev-cmd@v1
	if: matrix.os == 'windows-latest'

	- name: Install CMake and Ninja
	run: \|
	which python
	python --version
	pip install cmake ninja
	- name: Configure
	shell: bash -l {0}
	run: \|
	if [ "$RUNNER_OS" == "Windows" ]; then
	export CC=cl.exe
	export CXX=cl.exe
	fi
	mkdir build
	cd build
	cmake .. -G Ninja -DCMAKE_BUILD_TYPE=Release -Dgtest_force_shared_crt=ON
	- name: Build
	shell: bash -l {0}
	run: \|
	cd build
	ninja
	- name: Test
	shell: bash -l {0}
	run: \|
	cd build
	ctest

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