| Index: Makefile
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| diff --git a/Makefile b/Makefile
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| index 99a220d3106026594956360d0ecb8ced3fde049d..8db3193860cdc8407ae7668fc632c783507ced67 100644
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| --- a/Makefile
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| +++ b/Makefile
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| @@ -62,6 +62,13 @@ endif
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|  ifeq ($(snapshot), off)
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|    GYPFLAGS += -Dv8_use_snapshot='false'
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|  endif
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| +# extrachecks=on/off
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| +ifeq ($(extrachecks), on)
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| +  GYPFLAGS += -Dv8_enable_extra_checks=1
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| +endif
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| +ifeq ($(extrachecks), off)
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| +  GYPFLAGS += -Dv8_enable_extra_checks=0
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| +endif
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|  # gdbjit=on
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|  ifeq ($(gdbjit), on)
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|    GYPFLAGS += -Dv8_enable_gdbjit=1
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| 
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