Origin for each line in watchdogd.service.mk from check-in 7b547778fc:

7a1e7f4a58 2019-10-21    1: DAEMON_watchdogd_COMMAND?=/usr/sbin/watchdogd
bc20f9df9f 2019-10-24    2: DAEMON_watchdogd_FOREGROUND?=-d
7a1e7f4a58 2019-10-21    3: 
7a1e7f4a58 2019-10-21    4: .if empty(:!sysctl -qn debug.watchdog || exit 0!)
7a1e7f4a58 2019-10-21    5: DAEMON_watchdogd_ENABLE=no
7a1e7f4a58 2019-10-21    6: .endif
7a1e7f4a58 2019-10-21    7: 
d8511a3d7c 2022-05-30    8: watchdogd: ${_EARLYSERVICE}