https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64543

            Bug ID: 64543
           Summary: gcc fails to build due to undefined references to
                    functions in libiberty
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mikulas at artax dot karlin.mff.cuni.cz
              Host: x86_64-unknown-linux-gnu
            Target: x86_64-unknown-linux-gnu
             Build: x86_64-unknown-linux-gnu

The current gcc 5.0 (r219330) fails to build on Debian Wheezy x86-64. It
reports many symbols in libiberty as undefined. The bug may have been caused by
switching to slim lto objects.

MAKEFLAGS=-j12
export MAKEFLAGS
../gcc-svn/configure                                                    \
        --prefix=/usr/local/gcc-svn/                                    \
        --enable-lto                                                    \
        --with-system-zlib                                              \
        --enable-languages=c                                            \
        --enable-multilib                                               \
        --with-multilib-list=m32,m64                                    \
        --with-build-config=bootstrap-lto                               \
        --disable-werror                                                \
        --enable-checking=release                                       \
        &&
nice -n 20 make profiledbootstrap

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