freebsd stable - Mar 2005 - 5.3 Buildworld Problems on AMD

I just installed a new box last week, and so far the only thing I can think of
as being the problem is that this box is an AMD Sempron 2800.
I've re-installed this box twice, and I've used different CD's.
I cvsup'ed from my own local mirror, and from cvsup2.freebsd.org

I installed another P4 box the same day, the same way, and it did a
buildworld fine.

It always breaks in the same place, AND when I go to manually build
libmagic, it builds fine.

Advice or fixes?

--- error message ---

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/i386/usr/bin/ld: cannot find -lc
*** Error code 1

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

I have an update - 
I just tried to build from source from the CD and the FTP site, no dice...
I've tried cvsup'ing to 5.4-PRE and that doesn't build either.

Anyone? I didn't see anything in the archives, and some googling
doesn't show anything either.

Is 5.3-4 broken for AMD?