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