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      1  1.3  mrg # This option enables LTO for stage2 and stage3 in slim mode
      2  1.1  mrg 
      3  1.1  mrg STAGE2_CFLAGS += -flto=jobserver -frandom-seed=1
      4  1.1  mrg STAGE3_CFLAGS += -flto=jobserver -frandom-seed=1
      5  1.6  mrg STAGEprofile_CFLAGS += -flto=jobserver -frandom-seed=1
      6  1.6  mrg STAGEtrain_CFLAGS += -flto=jobserver -frandom-seed=1
      7  1.6  mrg STAGEfeedback_CFLAGS += -flto=jobserver -frandom-seed=1
      8  1.3  mrg 
      9  1.3  mrg # assumes the host supports the linker plugin
     10  1.3  mrg LTO_AR = $$r/$(HOST_SUBDIR)/prev-gcc/gcc-ar$(exeext) -B$$r/$(HOST_SUBDIR)/prev-gcc/
     11  1.3  mrg LTO_RANLIB = $$r/$(HOST_SUBDIR)/prev-gcc/gcc-ranlib$(exeext) -B$$r/$(HOST_SUBDIR)/prev-gcc/
     12  1.9  mrg LTO_NM = $$r/$(HOST_SUBDIR)/prev-gcc/gcc-nm$(exeext) -B$$r/$(HOST_SUBDIR)/prev-gcc/
     13  1.3  mrg 
     14  1.3  mrg LTO_EXPORTS = AR="$(LTO_AR)"; export AR; \
     15  1.9  mrg 	      RANLIB="$(LTO_RANLIB)"; export RANLIB; \
     16  1.9  mrg 	      NM="$(LTO_NM)"; export NM;
     17  1.9  mrg LTO_FLAGS_TO_PASS = AR="$(LTO_AR)" RANLIB="$(LTO_RANLIB)" NM="$(LTO_NM)"
     18  1.7  mrg 
     19  1.7  mrg do-compare = $(SHELL) $(srcdir)/contrib/compare-lto $$f1 $$f2
     20  1.8  mrg extra-compare = gcc/lto1$(exeext)
     21