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# This BUILD_CONFIG option is a bit like bootstrap-debug, but rather
# than comparing stripped object files, it compares compiler internal
# state during stage3. Both can be used simultaneously.
# This makes it slower than bootstrap-debug alone, for there's
# additional dumping and recompilation during stage3.
# bootstrap-debug-big can avoid the recompilation, if plenty of disk
# space is available.
STAGE2_CFLAGS += -fcompare-debug=
STAGE3_CFLAGS += -fcompare-debug
do-compare = $(SHELL) $(srcdir)/contrib/compare-debug $$f1 $$f2
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