error while building stable world

[Mike Manilone]

Hi all,

I'm trying to build a STABLE world. But now I've got an error.

/usr/local/bin/clang  -O2 -pipe  -I/usr/src/lib/libc/include 
-I/usr/src/lib/libc/../../include -I/usr/src/lib/libc/amd64 -DNLS 
-D__DBINTERFACE_PRIVATE -I/usr/src/lib/libc/../../contrib/gdtoa -DINET6 
-I/usr/obj/usr/src/lib/libc -I/usr/src/lib/libc/resolv -D_ACL_PRIVATE 
-DPOSIX_MISTAKE -I/usr/src/lib/libc/../../contrib/tzcode/stdtime 
-I/usr/src/lib/libc/stdtime -I/usr/src/lib/libc/locale -DBROKEN_DES 
-DPORTMAP -DDES_BUILTIN -I/usr/src/lib/libc/rpc -DYP -DNS_CACHING 
-DSYMBOL_VERSIONING -std=gnu99 -Qunused-arguments -fstack-protector 
-Wsystem-headers -Wall -Wno-format-y2k -Wno-uninitialized 
-Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int 
-Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality 
-Wno-unused-function -Wno-conversion -Wno-switch -Wno-switch-enum -c 
/usr/src/lib/libc/amd64/sys/__vdso_gettc.c -o __vdso_gettc.o
/usr/src/lib/libc/amd64/sys/__vdso_gettc.c:31:10: fatal error: 
'sys/vdso.h' file not found
#include <sys/vdso.h>
          ^
1 error generated.
*** [__vdso_gettc.o] Error code 1


How can I fix this error?

Another question: will buildworld also build the kernel?

Thanks.

Cheers,
Mike Manilone