[WIP] added erf support #2967

	name: linux-x64-cpu-clang-python
	on:
	push:
	branches: [master]
	paths:
	- '.github/workflows/linux-x64-cpu-clang-python.yml'
	- 'CMakeLists.txt'
	- 'cmake/**'
	- 'src/*'
	- 'src/layer/*'
	- 'src/layer/x86/**'
	- 'python/**'
	pull_request:
	branches: [master]
	paths:
	- '.github/workflows/linux-x64-cpu-clang-python.yml'
	- 'CMakeLists.txt'
	- 'cmake/**'
	- 'src/*'
	- 'src/layer/*'
	- 'src/layer/x86/**'
	- 'python/**'
	concurrency:
	group: linux-x64-cpu-clang-python-${{ github.ref }}
	cancel-in-progress: true
	permissions:
	contents: read

	jobs:
	linux-clang-python:
	runs-on: ubuntu-20.04
	strategy:
	matrix:
	python-version: [3.7, 3.9, 3.11]

	steps:
	- uses: actions/checkout@v3
	with:
	submodules: true
	- name: set up python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install pytest setuptools wheel twine
	- name: configure
	env:
	CC: clang
	CXX: clang++
	run: mkdir build && cd build && cmake -DNCNN_PYTHON=ON -DNCNN_DISABLE_RTTI=OFF -DNCNN_DISABLE_EXCEPTION=OFF -DNCNN_BUILD_TOOLS=OFF -DNCNN_BUILD_EXAMPLES=OFF ..
	- name: build
	run: cmake --build build -j 2
	- name: install python
	run: cd python && pip install .
	- name: test
	run: cd python && pytest tests
	- name: build and publish
	if: startsWith(github.ref, 'refs/tags')
	env:
	TWINE_USERNAME: __token__
	TWINE_PASSWORD: ${{ secrets.TEST_PYPI_API_TOKEN }}
	TWINE_REPOSITORY_URL: "https://test.pypi.org/legacy/"
	run: \|
	cd python
	python setup.py bdist_wheel
	twine upload dist/*

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