https://git.ruby-lang.org/ruby.git/commit/?id=66529eef88

From 66529eef883cc8bb9bc628122f9fa0104acd79fc Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Sat, 12 Nov 2022 08:48:43 +0900
Subject: Force to update revision.h when commits differ

---
 defs/gmake.mk | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/defs/gmake.mk b/defs/gmake.mk
index cebb181fd1..ec93bfbeba 100644
--- a/defs/gmake.mk
+++ b/defs/gmake.mk
@@ -383,6 +383,19 @@ $(UNICODE_SRC_DATA_DIR)/.unicode-tables.time: \ https://github.com/ruby/ruby/blob/trunk/defs/gmake.mk#L383
 	$(UNICODE_FILES) $(UNICODE_PROPERTY_FILES)
 endif
 
+ifeq ($(HAVE_GIT),yes)
+REVISION_LATEST := $(shell $(CHDIR) $(srcdir) && $(GIT) log -1 --format=%H 2>/dev/null)
+else
+REVISION_LATEST := update
+endif
+REVISION_IN_HEADER := $(shell sed -n 's/^\#define RUBY_FULL_REVISION "\(.*\)"/\1/p' $(wildcard $(srcdir)/revision.h revision.h) /dev/null 2>/dev/null)
+ifeq ($(REVISION_IN_HEADER),)
+REVISION_IN_HEADER := none
+endif
+ifneq ($(REVISION_IN_HEADER),$(REVISION_LATEST))
+$(REVISION_H): PHONY
+endif
+
 include $(top_srcdir)/yjit/yjit.mk
 
 # Query on the generated rdoc
-- 
cgit v1.2.3


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