https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65537
--- Comment #6 from Uroš Bizjak <ubizjak at gmail dot com> --- I'm testing the following patch: --cut here-- Index: config/bootstrap-lto-noplugin.mk =================================================================== --- config/bootstrap-lto-noplugin.mk (revision 0) +++ config/bootstrap-lto-noplugin.mk (revision 0) @@ -0,0 +1,6 @@ +# This option enables LTO for stage2 and stage3 on +# hosts without linker plugin support. + +STAGE2_CFLAGS += -flto=jobserver -frandom-seed=1 -ffat-lto-objects +STAGE3_CFLAGS += -flto=jobserver -frandom-seed=1 -ffat-lto-objects +STAGEprofile_CFLAGS += -fno-lto --cut here-- BTW: The documentation for bootstrap-lto is inadequate, as it does not mention any plugin support assumption or list any linker version requirement.
