ifeq ($(ROOT_DIR),)
	ROOT_DIR ?= $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
	RELATIVE_DIR ?= $(shell echo $(realpath .) | sed "s;$(ROOT_DIR)[/]*;;")
endif
ifeq ($(V),0)
	QUIET=@
	ECHO_CC=echo "  CC    $(RELATIVE_DIR)/$@"
	ECHO_GEN=echo "  GEN   $(RELATIVE_DIR)/"
	ECHO_GO=echo "  GO    $(RELATIVE_DIR)/$@"
	ECHO_CHECK=echo "  CHECK $(RELATIVE_DIR)"
	ECHO_GINKGO=echo "  GINKG $(RELATIVE_DIR)"
	ECHO_CLEAN=echo "  CLEAN $(RELATIVE_DIR)"
	SPHINXOPTS+="-q"
else
	# The whitespace at below EOLs is required for verbose case!
	ECHO_CC=: 
	ECHO_GEN=: 
	ECHO_GO=: 
	ECHO_CHECK=: 
	ECHO_GINKGO=: 
	ECHO_CLEAN=: 
endif