[Bug bootstrap/65537] [5 Regression] --with-build-config=bootstrap-lto fails on CentOS 5.11

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65537

--- Comment #4 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Or something like:

diff --git a/config/bootstrap-lto.mk b/config/bootstrap-lto.mk
index 9e065e1d85a0..5e93ee848727 100644
--- a/config/bootstrap-lto.mk
+++ b/config/bootstrap-lto.mk
@@ -1,5 +1,10 @@
 # This option enables LTO for stage2 and stage3 in slim mode

+#if HAVE_LTO_PLUGIN == 0
+STAGE2_CFLAGS += -flto=jobserver -frandom-seed=1 -ffat-lto-objects
+STAGE3_CFLAGS += -flto=jobserver -frandom-seed=1 -ffat-lto-objects
+STAGEprofile_CFLAGS += -fno-lto
+#else
 STAGE2_CFLAGS += -flto=jobserver -frandom-seed=1
 STAGE3_CFLAGS += -flto=jobserver -frandom-seed=1
 STAGEprofile_CFLAGS += -fno-lto
@@ -11,3 +16,4 @@ LTO_RANLIB = $$r/$(HOST_SUBDIR)/prev-gcc/gcc-ranlib$(exeext)
-B$$r/$(HOST_SUBDIR
 LTO_EXPORTS = AR="$(LTO_AR)"; export AR; \
              RANLIB="$(LTO_RANLIB)"; export RANLIB;
 LTO_FLAGS_TO_PASS = AR="$(LTO_AR)" RANLIB="$(LTO_RANLIB)"
+#endif