[Bug bootstrap/47196] New: --disable-libquadmath breaks bootstrap in libgfortran (quadmath_weak.h not found)

[dfranke at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47196

           Summary: --disable-libquadmath breaks bootstrap in libgfortran
                    (quadmath_weak.h not found)
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: dfranke@gcc.gnu.org
                CC: burnus@gcc.gnu.org
              Host: i686-pc-linux-gnu


Configuring as:
$> ../configure --prefix=[...] --program-suffix=-svn --with-system-zlib
--enable-bootstrap --enable-threads=posix --enable-shared
--enable-version-specific-runtime-libs --enable-languages=c,c++,fortran
--disable-maintainer-mode --disable-nls --disable-libmudflap
--disable-libquadmath

Ends with:
$> make bootstrap
[...]
In file included from /home/daniel/svn/gcc-svn/libgfortran/fmain.c:4:0:
/home/daniel/svn/gcc-svn/libgfortran/libgfortran.h:52:29: fatal error:
quadmath_weak.h: No such file or directory