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      1      1.1  mrg # This BUILD_CONFIG option is a bit like bootstrap-debug, but rather
      2      1.1  mrg # than comparing stripped object files, it compares compiler internal
      3      1.1  mrg # state during stage3.  Both can be used simultaneously.
      4      1.1  mrg 
      5      1.1  mrg # This makes it slower than bootstrap-debug alone, for there's
      6      1.1  mrg # additional dumping and recompilation during stage3.
      7      1.1  mrg # bootstrap-debug-big can avoid the recompilation, if plenty of disk
      8      1.1  mrg # space is available.
      9      1.1  mrg 
     10      1.1  mrg STAGE2_CFLAGS += -fcompare-debug=
     11      1.1  mrg STAGE3_CFLAGS += -fcompare-debug
     12  1.1.1.4  mrg do-compare = $(SHELL) $(srcdir)/contrib/compare-debug $$f1 $$f2
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