add xgboost library #3

	name: xgboost artifact

	on:
	workflow_dispatch:
	pull_request:
	push:
	branches: [ main ]

	permissions:
	pull-requests: write
	contents: write
	repository-projects: write

	jobs:
	publich_bcc_deb:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2
	with:
	persist-credentials: false
	fetch-depth: 0
	- name: Build xgboost
	run: \|
	set -x
	export XGBOOST_TAG=$(cat xgboost_tag)
	sudo apt-get update -y
	# ubuntu 20.04 ships with cmake 3.16, but xgboost needs 3.18+. Install cmake from pip
	sudo apt-get install git make g++ python3-pip -y
	sudo pip install cmake --upgrade
	git clone --recursive https://github.com/dmlc/xgboost.git
	cd xgboost && git checkout tags/v$(XGBOOST_TAG) && mkdir -p build && cd build && cmake .. && make -j4 && make package && cp build/xgboost-${XGBOOST_TAG}-Linux.sh /tmp/xgboost.sh
	- if: startsWith(github.event.ref, 'refs/tags/')
	name: Release
	uses: softprops/action-gh-release@master
	with:
	files: \|
	xgboost.sh
	/tmp/xgboost.sh

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