[Bug lto/62083] New: lto1: fatal error: bytecode stream generated with LTO version 2.2 instead of the expected 3.0

["dilyan.palauzov at aegee dot org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62083

            Bug ID: 62083
           Summary: lto1: fatal error: bytecode stream generated with LTO
                    version 2.2 instead of the expected 3.0
           Product: gcc
           Version: 4.9.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dilyan.palauzov at aegee dot org

I have binutils-2.24 with
https://sourceware.org/ml/binutils/2014-01/msg00213.html patch applied, and
libtool 2.4.2.444.30-da30-dirty .

export CFLAGS='-pipe -flto -O3 -Wl,-S -Wl,--hash-style=gnu -Wl,-O1 -Wl,-z,relro
-Wall -Wextra -Wl,--plugin=/usr/lib/bfd-plugins/liblto_plugin.so
-fno-fat-lto-objects'
export CXXFLAGS=$CFLAGS

When I do:

git clone http://mail.aegee.org/cgit/aegee-milter
cd aegee-milter
autoreconf -i
./configure && make

I get:

lto1: fatal error: bytecode stream generated with LTO version 2.2 instead of
the expected 3.0
compilation terminated.
lto-wrapper: g++ returned 1 exit status
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.9.1/../../../../x86_64-unknown-linux-gnu/bin/ld:
lto-wrapper failed
collect2: error: ld returned 1 exit status

What means "generated with v2.2 instead of the expected 3.0" and how can I fix
this?