3.4 bootstrap failure on powerpc-apple-darwin7.2.0

["Timothy J. Wood" <tjw at omnigroup dot com>]

../gcc/configure --prefix="$PREFIX" --enable-altivec  
--enable-languages="c,c++,objc"
make

/Users/bungi/Source/GNU/gcc/gcc-3.4/build/gcc/xgcc  
-B/Users/bungi/Source/GNU/gcc/gcc-3.4/build/gcc/  
-B/Users/bungi/Source/GNU/gcc/gcc-3.4/install/powerpc-apple- 
darwin7.2.0/bin/  
-B/Users/bungi/Source/GNU/gcc/gcc-3.4/install/powerpc-apple- 
darwin7.2.0/lib/ -isystem  
/Users/bungi/Source/GNU/gcc/gcc-3.4/install/powerpc-apple-darwin7.2.0/ 
include -isystem  
/Users/bungi/Source/GNU/gcc/gcc-3.4/install/powerpc-apple-darwin7.2.0/ 
sys-include -O2  -DIN_GCC    -W -Wall -Wwrite-strings  
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition   
-isystem ./include  -mlong-double-128 -g -DHAVE_GTHR_DEFAULT  
-DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED  -I. -I -I../../gcc/gcc  
-I../../gcc/gcc/ -I../../gcc/gcc/../include -I../intl -fexceptions -c  
../../gcc/gcc/unwind-dw2.c -o libgcc/./unwind-dw2.o
/var/tmp//ccec9Kuq.s:4837:stvx vector instruction is optional for the  
PowerPC (not allowed without -force_cpusubtype_ALL option)
/var/tmp//ccec9Kuq.s:4840:stvx vector instruction is optional for the  
PowerPC (not allowed without -force_cpusubtype_ALL option)
/var/tmp//ccec9Kuq.s:4843:stvx vector instruction is optional for the  
PowerPC (not allowed without -force_cpusubtype_ALL option)
/var/tmp//ccec9Kuq.s:4846:stvx vector instruction is optional for the  
PowerPC (not allowed without -force_cpusubtype_ALL option)
...

  Am I supposed to do something to get '-force_cpusubtype_ALL' (or  
maybe -faltivec) passed to xgcc when bootstrapping, or is this an  
actual bug?

-tim