Makefile

bs_installed  := $(shell command -v bikeshed 2> /dev/null)
svgo_installed  := $(shell command -v svgo 2> /dev/null)

.PHONY: all
all: index.html

index.html: index.bs
ifdef bs_installed
	bikeshed spec index.bs
else
	# Can't find a local version of Bikeshed. To install it, visit:
	#
	#     https://tabatkins.github.io/bikeshed/#installing
	#
	# Trying to build the spec using the online API at: https://api.csswg.org/bikeshed/
	# This will fail if you are not connected to the network.
	curl https://api.csswg.org/bikeshed/ -F file=@index.bs > index.html
endif

.PHONY: optimize-svg
optimize-svg:
ifdef svgo_installed
# https://github.com/svg/svgo/issues/872
	svgo --multipass --disable=mergePaths object-uml.svg
endif