Merge pull request #162 from robe2/fix-warnings-pg16 #99

	# GitHub Actions for PostGIS
	#
	# Paul Ramsey <pramsey at cleverelephant dot ca>

	name: "CI"
	on: [push, pull_request]

	jobs:
	linux:

	runs-on: ubuntu-latest

	name: "CI"
	strategy:
	matrix:
	ci:
	- { PGVER: 12 }
	- { PGVER: 13 }
	- { PGVER: 14 }
	- { PGVER: 15 }
	- { PGVER: 16 }

	steps:

	- name: 'Check Out'
	uses: actions/checkout@v3

	- name: 'Install PostgreSQL'
	run: \|
	sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg-snapshot main ${{ matrix.ci.PGVER }}" > /etc/apt/sources.list.d/pgdg.list'
	curl https://www.postgresql.org/media/keys/ACCC4CF8.asc \| gpg --dearmor \| sudo tee /etc/apt/trusted.gpg.d/apt.postgresql.org.gpg >/dev/null
	sudo apt-get update
	sudo apt-get -y install postgresql-${{ matrix.ci.PGVER }} postgresql-server-dev-${{ matrix.ci.PGVER }}

	- name: 'Install Curl'
	run: \|
	sudo apt-get -y install libcurl4-gnutls-dev

	- name: 'Start PostgreSQL'
	run: \|
	export PGDATA=/var/lib/postgresql/${{ matrix.ci.PGVER }}/main
	export PGETC=/etc/postgresql/${{ matrix.ci.PGVER }}/main
	export PGBIN=/usr/lib/postgresql/${{ matrix.ci.PGVER }}/bin
	sudo cp ./ci/pg_hba.conf $PGETC/pg_hba.conf
	sudo su postgres -c "$PGBIN/pg_ctl --pgdata $PGDATA start -o '-c config_file=$PGETC/postgresql.conf -p 5432'"

	- name: 'Build & Test'
	run: \|
	export PATH=/usr/lib/postgresql/${{ matrix.ci.PGVER }}/bin/:$PATH
	export PG_CONFIG=/usr/lib/postgresql/${{ matrix.ci.PGVER }}/bin/pg_config
	export PG_CFLAGS=-Werror
	make
	sudo -E make PG_CONFIG=$PG_CONFIG install
	PGUSER=postgres make installcheck \|\| (cat regression.diffs && /bin/false)

Provide feedback