Origin for each line in watchdogd.service from check-in 47c6cc1171:

b8c8da525b 2019-10-20        arcade: # vim:ft=make:
b8c8da525b 2019-10-20        arcade: 
8f80b79392 2019-10-20        arcade: DAEMON_watchdogd_COMMAND?=/usr/sbin/watchdogd
b8c8da525b 2019-10-20        arcade: DAEMON_watchdogd_ENABLE?=no
b8c8da525b 2019-10-20        arcade: DAEMON_watchdogd_FLAGS?=-d
b8c8da525b 2019-10-20        arcade: 
47c6cc1171 2019-10-20        arcade: .if empty(:!sysctl -qn debug.watchdog || exit 0!)
b8c8da525b 2019-10-20        arcade: DAEMON_watchdogd_ENABLE=no
b8c8da525b 2019-10-20        arcade: .endif
b8c8da525b 2019-10-20        arcade: 
b8c8da525b 2019-10-20        arcade: watchdogd: _daemon