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Needs to update revision.h unless existing [ci skip]
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@ -338,8 +338,13 @@ $(UNICODE_SRC_DATA_DIR)/.unicode-tables.time: \
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$(UNICODE_FILES) $(UNICODE_PROPERTY_FILES)
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endif
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ifeq ($(wildcard $(srcdir)/revision.h),)
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REVISION_IN_HEADER := none
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REVISION_LATEST := update
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else
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REVISION_IN_HEADER := $(shell sed -n 's/^\#define RUBY_FULL_REVISION "\(.*\)"/\1/p' $(srcdir)/revision.h 2>/dev/null)
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REVISION_LATEST := $(shell $(CHDIR) $(srcdir) && git log -1 --format=%H 2>/dev/null)
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endif
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ifneq ($(REVISION_IN_HEADER),$(REVISION_LATEST))
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# GNU make treat the target as unmodified when its dependents get
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# updated but it is not updated, while others may not.
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