Update README.md #10

	# ---------------------------------------------------------------------------- #

	name: build # the name is mostly to look good on status badges
	on:
	- push
	- pull_request

	jobs:

	build-all-targets:

	name: Build all targets
	runs-on: ubuntu-20.04

	steps:

	- name: Check out repository
	uses: actions/checkout@v2

	# can prevent unnecessary reconfiguration but not recompilation
	- name: Set up build cache
	uses: actions/cache@v2
	with:
	path: ~/build
	key: build-system

	- name: Configure build
	run: \|
	cmake -S . -B ~/build \
	-D CMAKE_BUILD_TYPE=Debug -D CMAKE_CXX_FLAGS="-Werror -fPIC -Wl,--no-as-needed -ldl"\
	-D CMAKE_C_COMPILER=clang -D CMAKE_CXX_COMPILER=clang++

	- name: Build all targets
	run: cmake --build ~/build --config Debug

	# ---------------------------------------------------------------------------- #

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