Another useflag is introduced to pull bootchart package and modify related files (/sbin/rc /lib/rcscripts/sh/rc-services.sh and /etc/conf.d/rc)
Created attachment 92257 [details, diff] baselayout-1.12.1.patch
In /sbin/rc, line 514 you're adding this profiling name "mark started" That's not in the equivalent section for rc-services.sh, so does it need to be there or can be be removed from the patch?
OK, never mind, I think I know what it's for.
Fixed in baselayout-1.12.4-r1