config/bootstrap-lto-lean.mk

   1 # This option enables LTO for stage4 and LTO for generators in stage3 with profiledbootstrap.
   2 # Otherwise, LTO is used in only stage3.
   3
   4 STAGE3_CFLAGS += -flto=jobserver
   5 override STAGEtrain_CFLAGS := $(filter-out -flto=jobserver,$(STAGEtrain_CFLAGS))
   6 STAGEtrain_GENERATOR_CFLAGS += -flto=jobserver
   7 STAGEfeedback_CFLAGS += -flto=jobserver
   8
   9 # assumes the host supports the linker plugin
  10 LTO_AR = $$r/$(HOST_SUBDIR)/prev-gcc/gcc-ar$(exeext) -B$$r/$(HOST_SUBDIR)/prev-gcc/
  11 LTO_RANLIB = $$r/$(HOST_SUBDIR)/prev-gcc/gcc-ranlib$(exeext) -B$$r/$(HOST_SUBDIR)/prev-gcc/
  12 LTO_NM = $$r/$(HOST_SUBDIR)/prev-gcc/gcc-nm$(exeext) -B$$r/$(HOST_SUBDIR)/prev-gcc/
  13
  14 LTO_EXPORTS = AR="$(LTO_AR)"; export AR; \
  15               RANLIB="$(LTO_RANLIB)"; export RANLIB; \
  16               NM="$(LTO_NM)"; export NM;
  17 LTO_FLAGS_TO_PASS = AR="$(LTO_AR)" RANLIB="$(LTO_RANLIB)" NM="$(LTO_NM)"
  18
  19 do-compare = /bin/true