From 1a6ae0a99fbb8e95dacbbcbc76ee360df04c7566 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 29 Nov 2018 07:07:40 +0000
Subject: [PATCH] Always try to update revision.h with GNU make

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66089 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 common.mk     | 2 +-
 defs/gmake.mk | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/common.mk b/common.mk
index eab8f9fd09..a4559a7087 100644
--- a/common.mk
+++ b/common.mk
@@ -1083,7 +1083,7 @@ preludes: {$(VPATH)}miniprelude.c
 preludes: {$(srcdir)}golf_prelude.c
 
 $(srcdir)/revision.h:
-	@exit > $@
+	$(Q)$(gnumake:yes=#) exit > $@
 
 $(REVISION_H): $(srcdir)/version.h $(srcdir)/tool/file2lastrev.rb $(REVISION_FORCE)
 	-$(Q) $(BASERUBY) $(srcdir)/tool/file2lastrev.rb -q --revision.h "$(srcdir)" > revision.tmp
diff --git a/defs/gmake.mk b/defs/gmake.mk
index a4acb679f9..49934c5f01 100644
--- a/defs/gmake.mk
+++ b/defs/gmake.mk
@@ -185,6 +185,10 @@ $(MJIT_MIN_HEADER): $(mjit_min_headers) $(PREP)
 
 endif
 
+# GNU make treat the target as unmodified when its dependents get
+# updated but it is not updated, while others may not.
+$(srcdir)/revision.h: $(REVISION_H)
+
 # Query on the generated rdoc
 #
 #   $ make rdoc:Integer#+