Kernel build broken without "options KTRACE"

From: John Nielsen <lists_at_jnielsen.net>
Date: Wed, 06 Mar 2024 17:51:05 UTC
Getting a set but not used warning for “td” in sys/kern/kern_condvar.c when doing a buildkernel for a config file without “options KTRACE”. I failed to copy the full error message/line numbers but I will reproduce this evening if needed.

JN