compile time option to not read config from sysconfdir
AIUI, right now tor will read /etc/tor/torrc and /etc/tor/torrc-defaults (or /usr/local/etc/tor/...) when started as any user, if they exist and aren't overridden on the command line. (Other conditionals may apply.)
I'd like a compile time option that would stop tor reading any global configuration/defaults files. If no ~/.torrc exists and no configuration file is passed on the command line it should instead just use its built-in defaults.
That way, users running tor under their own user won't get interfered with /etc/tor/torrc settings. The init script can continue to pass /etc/tor/torrc to the tor binary on the command line.