168349Sobrien# This option enables LTO for stage2 and stage3 in slim mode 268349Sobrien 3226048SobrienSTAGE2_CFLAGS += -flto=jobserver -frandom-seed=1 468349SobrienSTAGE3_CFLAGS += -flto=jobserver -frandom-seed=1 568349SobrienSTAGEprofile_CFLAGS += -flto=jobserver -frandom-seed=1 668349SobrienSTAGEtrain_CFLAGS += -flto=jobserver -frandom-seed=1 768349SobrienSTAGEfeedback_CFLAGS += -flto=jobserver -frandom-seed=1 868349Sobrien 968349Sobrien# assumes the host supports the linker plugin 1068349SobrienLTO_AR = $$r/$(HOST_SUBDIR)/prev-gcc/gcc-ar$(exeext) -B$$r/$(HOST_SUBDIR)/prev-gcc/ 1168349SobrienLTO_RANLIB = $$r/$(HOST_SUBDIR)/prev-gcc/gcc-ranlib$(exeext) -B$$r/$(HOST_SUBDIR)/prev-gcc/ 1268349Sobrien 1368349SobrienLTO_EXPORTS = AR="$(LTO_AR)"; export AR; \ 1468349Sobrien RANLIB="$(LTO_RANLIB)"; export RANLIB; 1568349SobrienLTO_FLAGS_TO_PASS = AR="$(LTO_AR)" RANLIB="$(LTO_RANLIB)" 1668349Sobrien 1768349Sobriendo-compare = $(SHELL) $(srcdir)/contrib/compare-lto $$f1 $$f2 18extra-compare = gcc/lto1$(exeext) 19