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18 lines
732 B
Makefile
18 lines
732 B
Makefile
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# This option enables LTO for stage4 and LTO for generators in stage3 with profiledbootstrap.
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# Otherwise, LTO is used in only stage3.
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STAGE3_CFLAGS += -flto=jobserver
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override STAGEtrain_CFLAGS := $(filter-out -flto=jobserver,$(STAGEtrain_CFLAGS))
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STAGEtrain_GENERATOR_CFLAGS += -flto=jobserver
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STAGEfeedback_CFLAGS += -flto=jobserver
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# assumes the host supports the linker plugin
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LTO_AR = $$r/$(HOST_SUBDIR)/prev-gcc/gcc-ar$(exeext) -B$$r/$(HOST_SUBDIR)/prev-gcc/
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LTO_RANLIB = $$r/$(HOST_SUBDIR)/prev-gcc/gcc-ranlib$(exeext) -B$$r/$(HOST_SUBDIR)/prev-gcc/
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LTO_EXPORTS = AR="$(LTO_AR)"; export AR; \
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RANLIB="$(LTO_RANLIB)"; export RANLIB;
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LTO_FLAGS_TO_PASS = AR="$(LTO_AR)" RANLIB="$(LTO_RANLIB)"
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do-compare = /bin/true
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