failure building gcc-3.3 (broken libiberty/vsprintf.c or build?)

[Peter Barada <peter@baradas.org>]

I'm trying to build gcc-3.3 configured with:
/home/peter/work/cvs-local/xgcc/gcc-3.3/configure \
--with-gcc-version-trigger=/home/peter/work/cvs-local/xgcc/gcc-3.3/gcc/version.c \
--host=i686-pc-linux-gnu --target=m68k-elf --prefix=/tmp/m68k-elf \
--enable-languages=c,c++ --with-local-prefix=/tmp/m68k-elf/m68k-elf \
--with-headers=/tmp/m68k-elf/m68k-elf/include --norecursion 

and 'make all' bombs with:

/home/peter/work/cvs-local/xgcc/obj/m68k-elf/m68k-elf-gcc/gcc/xgcc -B/home/peter/work/cvs-local/xgcc/obj/m68k-elf/m68k-elf-gcc/gcc/ -B/tmp/m68k-elf/m68k-elf/bin/ -B/tmp/m68k-elf/m68k-elf/lib/ -isystem /tmp/m68k-elf/m68k-elf/include -c -DHAVE_CONFIG_H -O2 -g -O2 -I. -I/home/peter/work/cvs-local/xgcc/gcc-3.3/libiberty/../include  -W -Wall -Wtraditional -pedantic /home/peter/work/cvs-local/xgcc/gcc-3.3/libiberty/vsprintf.c -o vsprintf.o
In file included from /home/peter/work/cvs-local/xgcc/gcc-3.3/libiberty/vsprintf.c:29:
/home/peter/work/cvs-local/xgcc/obj/m68k-elf/m68k-elf-gcc/gcc/include/varargs.h:4:2: #error "GCC no longer implements <varargs.h>."
/home/peter/work/cvs-local/xgcc/obj/m68k-elf/m68k-elf-gcc/gcc/include/varargs.h:5:2: #error "Revise your code to use <stdarg.h>."
make[2]: *** [vsprintf.o] Error 1
make[2]: Leaving directory `/home/peter/work/cvs-local/xgcc/obj/m68k-elf/m68k-elf-gcc/m68k-elf/libiberty'

gcc-3.3/lbiberty/vsprintf.c, indeed includes <varargs.h> (which gcc
supplise), so if gcc-3.3 has killed support for varargs,h, why is
libiberty/vsprintf.c trying to include it.  In fact, why is gcc-3.3
trying to build libiberty with the *target* compiler anyway?

Any suggestions?

-- 
Peter Barada
peter@baradas.org