sparc64 buildworld is broken?

Hackers,

i'm trying to upgrade couple of sun netra's here and having troubles 
with 'make buildworld'.

netra1# uname -a
FreeBSD netra1 5.2.1-RELEASE FreeBSD 5.2.1-RELEASE #0: Tue Feb 24 
07:47:33 GMT 2004 
root_at_bobbi.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  sparc64

it always stops at '===> lib/libmagic (all)'. the last few lines are 
below. complete buildworld output can be found at

http://mumu.org/~myevmenk/buildworld.txt

cc -DHAVE_CONFIG_H -DCOMPILE_ONLY  -I/usr/src/lib/libmagic 
-I/usr/src/lib/libmagic/../../contrib/file -o mkmagic 
/usr/src/lib/libmagic/../../contrib/file/apprentice.c 
/usr/src/lib/libmagic/../../contrib/file/funcs.c 
/usr/src/lib/libmagic/../../contrib/file/magic.c 
/usr/src/lib/libmagic/../../contrib/file/print.c
/usr/obj/usr/src/sparc64/usr/bin/ld: cannot find -lc
*** Error code 1

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

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

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

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

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

Stop in /usr/src.

thanks,
max