From 1a920c7f9b05c57070add324899dae5b4562b963 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 10 Jan 2013 08:45:42 +0000
Subject: Makefile.in: continue if Makefile unchanged

* Makefile.in, win32/Makefile.sub ($(MKFILES)): continue if Makefile
  unchanged.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38764 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 Makefile.in | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'Makefile.in')

diff --git a/Makefile.in b/Makefile.in
index e68976257b..45eb7c68e8 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -251,8 +251,10 @@ install-cross: $(arch)-fake.rb $(RBCONFIG) rbconfig.rb $(arch_hdrdir)/ruby/confi
 Makefile:	$(srcdir)/Makefile.in $(srcdir)/enc/Makefile.in
 
 $(MKFILES): config.status
+		@[ -f Makefile ] && mv Makefile Makefile.old
 		MAKE=$(MAKE) $(SHELL) ./config.status
-		@{ \
+		@cmp Makefile Makefile.old > /dev/null 2>&1 && echo Makefile unchanged && exit 0; \
+		{ \
 		    echo "all:; -@rm -f conftest.mk"; \
 		    echo "conftest.mk: .force; @echo AUTO_REMAKE"; \
 		    echo ".force:"; \
-- 
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