Error at "make buildworld" with sources from release and stable

[Frank Wißmann]

Hi all!
When making the world new i get this error message:

machine -> /usr/src/sys/amd64/include
awk -f @/tools/vnode_if.awk @/kern/vnode_if.src -p
awk -f @/tools/vnode_if.awk @/kern/vnode_if.src -q
awk -f @/tools/vnode_if.awk @/kern/vnode_if.src -h
rm -f .depend
mkdep -f .depend -a   -nostdinc -D_KERNEL -DKLD_MODULE 
-I/usr/src/sys/modules/dtrace/lockstat/../../../cddl/compat/opensolaris 
-I/usr/src/sys/modules/dtrace/lockstat/../../../cddl/contrib/opensolaris/uts/common 
-I/usr/src/sys/modules/dtrace/lockstat/../../.. -I. -I@ -I@/contrib/altq 
/usr/src/sys/modules/dtrace/lockstat/../../../cddl/dev/lockstat/lockstat.c
/usr/src/sys/modules/dtrace/lockstat/../../../cddl/dev/lockstat/lockstat.c:32:25: 
error: opt_kdtrace.h: No such file or directory
mkdep: compile failed
*** Error code 1

Stop in /usr/src/sys/modules/dtrace/lockstat.
*** Error code 1

Stop in /usr/src/sys/modules/dtrace.
*** Error code 1

Stop in /usr/src/sys/modules.
*** Error code 1

Stop in /usr/src/sys.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.

This happens when using the sources as given with the release or if I 
update to RELENG-8. What is wrong here? Is something missing in the 
"make.conf"?

Greetings til' next year :-).

Frank
-- 
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When pack meets pack in the jungle
and no one will move from the trail
wait till the leaders have spoken
it may be fair words shall prevail

(Rudyard Kipling)