[Bug bootstrap/52784] New: i386-apple-darwin multilib bootstrap broken

["howarth at nitro dot med.uc.edu" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52784

             Bug #: 52784
           Summary: i386-apple-darwin multilib bootstrap broken
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: howarth@nitro.med.uc.edu


At r185971, the multi lib bootstrap on i386-apple-darwin is broken...

Adding multilib support to Makefile in ../../../gcc-4.8-20120329/libgcc
multidirs=x86_64
with_multisubdir=
Running configure in multilib subdirs x86_64
pwd:
/sw_i386/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/i386-apple-darwin10.8.0/libgcc
Running configure in multilib subdir x86_64
pwd:
/sw_i386/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/i386-apple-darwin10.8.0
mkdir x86_64
configure: creating cache ./config.cache
checking build system type... i386-apple-darwin10.8.0
checking host system type... i386-apple-darwin10.8.0
checking for --enable-version-specific-runtime-libs... no
checking for a BSD-compatible install... /usr/bin/install -c
checking for gawk... gawk
checking for i386-apple-darwin10.8.0-ar... ar
checking for i386-apple-darwin10.8.0-lipo... lipo
checking for i386-apple-darwin10.8.0-nm...
/sw_i386/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/./gcc/nm
checking for i386-apple-darwin10.8.0-ranlib... ranlib
checking for i386-apple-darwin10.8.0-strip... strip
checking whether ln -s works... yes
checking for i386-apple-darwin10.8.0-gcc...
/sw_i386/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/./gcc/xgcc
-B/sw_i386/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/./gcc/
-B/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/bin/
-B/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/lib/ -isystem
/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/include -isystem
/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/sys-include  -m64
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether
/sw_i386/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/./gcc/xgcc
-B/sw_i386/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/./gcc/
-B/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/bin/
-B/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/lib/ -isystem
/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/include -isystem
/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/sys-include  -m64 accepts -g... no
checking for /sw_i386/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/./gcc/xgcc
-B/sw_i386/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/./gcc/
-B/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/bin/
-B/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/lib/ -isystem
/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/include -isystem
/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/sys-include  -m64 option to accept
ISO C89... unsupported
checking how to run the C preprocessor...
/sw_i386/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/./gcc/xgcc
-B/sw_i386/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/./gcc/
-B/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/bin/
-B/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/lib/ -isystem
/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/include -isystem
/sw_i386/lib/gcc4.8/i386-apple-darwin10.8.0/sys-include  -m64 -E
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking size of double... 8
checking size of long double... 16
checking whether decimal floating point is supported... no
configure: WARNING: decimal float is not supported for this target, ignored
checking whether fixed-point is supported... no
checking whether to use setjmp/longjmp exceptions... unknown
configure: error: unable to detect exception model
make[2]: *** [configure-stage1-target-libgcc] Error 1
make[1]: *** [stage1-bubble] Error 2

Build configure as...

  $ ../gcc-4.8-20120329/configure --prefix=/sw_i386
--prefix=/sw_i386/lib/gcc4.8 --mandir=/sw_i386/share/man
--infodir=/sw_i386/lib/gcc4.8/info
--enable-languages=c,c++,fortran,lto,objc,obj-c++,java --with-gmp=/sw_i386
--with-libiconv-prefix=/sw_i386 --with-ppl=/sw_i386 --with-cloog=/sw_i386
--with-mpc=/sw_i386 --with-system-zlib --x-includes=/usr/X11R6/include
--x-libraries=/usr/X11R6/lib --program-suffix=-fsf-4.8
--enable-cloog-backend=isl