doc: crystal docs DOC_HTTPD_ACCESS_LOGS ?= /tmp/access.log DOC_HTTPD_ADDRESS ?= 127.0.0.1 DOC_HTTPD_PORT ?= 9000 serve-doc: darkhttpd docs/ --addr $(DOC_HTTPD_ADDRESS) --port $(DOC_HTTPD_PORT) --log $(DOC_HTTPD_ACCESS_LOGS)