[Bug bootstrap/58572] [4.9 regression] make bootstrap-lean leads to installation failure (doing extra rebuilds and invoking system compiler)

[mario.held at de dot ibm.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58572

--- Comment #11 from Mario Held <mario.held at de dot ibm.com> ---
Checked out revision 208400 and did a "make -j <NUM_CPUS> bootstrap-lean
1>>$OUTPUT 2>&1" on s390x (IBM System z). Success, works as expected.