usr/src/sys/conf/defines

/:#if.*[ \t]*KPROF/d
/:#if.*[ \t]*PGINPROF/d
/:#if.*[ \t]*UNFAST/d
/:#if.*[ \t]*INSECURE/d
/:#if.*[ \t]*TRACE/d
/:#if.*[ \t]*DISKMON/d
/:#if.*[ \t]*INTRLVE/d
/:#if.*[ \t]*lint/d
/:#if.*[ \t]*notdef/d
/:#if.*[ \t]*unneeded/d
/:#if.*[ \t]*vax/d
/:#if.*[ \t]*TCPTRUEOOB/d
/:#if.*[ \t]*irele/d
/:#if.*[ \t]*ilock/d
/:#if.*[ \t]*notyet/d