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8869a246 1# This option enables LTO for stage2 and stage3 in slim mode
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3STAGE2_CFLAGS += -flto=jobserver -frandom-seed=1
4STAGE3_CFLAGS += -flto=jobserver -frandom-seed=1
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5STAGEprofile_CFLAGS += -flto=jobserver -frandom-seed=1
6STAGEtrain_CFLAGS += -flto=jobserver -frandom-seed=1
7STAGEfeedback_CFLAGS += -flto=jobserver -frandom-seed=1
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8
9# assumes the host supports the linker plugin
10LTO_AR = $$r/$(HOST_SUBDIR)/prev-gcc/gcc-ar$(exeext) -B$$r/$(HOST_SUBDIR)/prev-gcc/
11LTO_RANLIB = $$r/$(HOST_SUBDIR)/prev-gcc/gcc-ranlib$(exeext) -B$$r/$(HOST_SUBDIR)/prev-gcc/
12
13LTO_EXPORTS = AR="$(LTO_AR)"; export AR; \
14 RANLIB="$(LTO_RANLIB)"; export RANLIB;
15LTO_FLAGS_TO_PASS = AR="$(LTO_AR)" RANLIB="$(LTO_RANLIB)"
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16
17do-compare = $(SHELL) $(srcdir)/contrib/compare-lto $$f1 $$f2