===> gnu/lib/csu (all)
cc -O2 -fno-strict-aliasing -pipe  -DIN_GCC -DHAVE_LD_EH_FRAME_HDR -DDT_CONFIG -D__GLIBC__=3 -finhibit-size-directive -fno-inline-functions  -fno-exceptions -fno-zero-initialized-in-bss  -fno-zero-initialized-in-bss -fno-toplevel-reorder -I/usr/src/gnu/lib/csu/../../../contrib/gcclibs/include -I/usr/src/gnu/lib/csu/../../../contrib/gcc/config -I/usr/src/gnu/lib/csu/../../../contrib/gcc -I.  -I/usr/src/gnu/lib/csu/../../usr.bin/cc/cc_tools -std=gnu89  -g0 -DCRT_BEGIN  -c -o crtbegin.o /usr/src/gnu/lib/csu/../../../contrib/gcc/crtstuff.c
In file included from ./tm.h:4,
                 from /usr/src/gnu/lib/csu/../../../contrib/gcc/crtstuff.c:70:
./options.h:891: error: redeclaration of enumerator 'OPT_w'
./options.h:889: error: previous definition of 'OPT_w' was here
*** Error code 1

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

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

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

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

Stop in /usr/src.
fbsdlap# uname -a
FreeBSD fbsdlap.opt.se 7.0-RC1 FreeBSD 7.0-RC1 #0: Mon Dec 24 12:18:24 UTC 2007     root@logan.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386
fbsdlap#