[Bug bootstrap/49737] [4.7 Regression] Bootstrap failure at revision 176240 on x86_64-apple-darwin10

["dominiq at lps dot ens.fr" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49737

--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-07-13 17:03:30 UTC ---
I configured the build with

../work/configure --prefix=/opt/gcc/gcc4.7w
--enable-languages=c,c++,fortran,objc,obj-c++,java,lto --with-gmp=/opt/sw64
--with-libiconv-prefix=/opt/sw64 --with-system-zlib --with-cloog=/opt/sw64
--enable-cloog-backend=isl --enable-lto

A nonparallel make gives


# If this is the top-level multilib, build all the other
# multilibs.
/bin/sh ../../../../work/libgcc/../mkinstalldirs ../../.././gcc/i386
for file in libgcc_s.1.dylib  libgcc_ext.10.4.dylib libgcc_ext.10.5.dylib; do  
         \
      rm -f ../../.././gcc/i386/$file;        \
      ln -s ../$file ../../.././gcc/i386/;    \
    done
rm -f ../../.././gcc/i386/libgcc_s_x86_64.1.dylib
ln -s libgcc_s.1.dylib \
        ../../.././gcc/i386/libgcc_s_x86_64.1.dylib
rm -f ../../.././gcc/i386/libgcc_s_ppc64.1.dylib                <-- ppc64 seems
quite suspicious here
ln -s libgcc_s.1.dylib \
        ../../.././gcc/i386/libgcc_s_ppc64.1.dylib
# If the gcc directory specifies which extra parts to
# build for this target, and the libgcc configuration also
# specifies, make sure they match.  This can be removed
# when the gcc directory no longer holds libgcc configuration;
# it is useful when migrating a target.
Configuration mismatch!
Extra parts from gcc directory: crtfastmath.o crtprec32.o crtprec64.o
crtprec80.o
Extra parts from libgcc: crt3.o