From 5dc3da08436eb524c2700bd569ea9c3f748e6f8e Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 4 Feb 2018 09:13:19 +0000
Subject: [PATCH] use ifchange tool for rb_mjit_header.h

* Makefile.in, win32/Makefile.sub (rb_mjit_header.h): use ifchange
  tool.  cmp command is not available on Windows.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62194 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 Makefile.in        | 2 +-
 win32/Makefile.sub | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile.in b/Makefile.in
index b91f4d2ee4..cb1eb75f58 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -411,7 +411,7 @@ probes.@OBJEXT@: $(srcdir)/probes.d $(DTRACE_REBUILD:yes=probes.stamp)
 rb_mjit_header.h: PHONY probes.h
 	$(ECHO) building $@
 	$(Q) $(CC) $(CFLAGS) $(XCFLAGS) $(CPPFLAGS) -DMJIT_HEADER $(srcdir)/vm.c $(COUTFLAG) $@.new -E -P -dD
-	$(Q) (cmp $@.new $@ && $(ECHO0) $@ unchanged && $(RM) $@.new) || $(MV) $@.new $@
+	$(Q) $(IFCHANGE) $@ $@.new
 
 $(MJIT_MIN_HEADER): rb_mjit_header.h $(srcdir)/tool/transform_mjit_header.rb
 	$(ECHO) building $@
diff --git a/win32/Makefile.sub b/win32/Makefile.sub
index 15f13a90ca..a32639728b 100644
--- a/win32/Makefile.sub
+++ b/win32/Makefile.sub
@@ -1189,7 +1189,7 @@ probes.h: {$(VPATH)}probes.dmyh
 rb_mjit_header.h: PHONY probes.h
 	$(ECHO) building $@
 	$(Q) $(CC) $(CFLAGS) $(XCFLAGS) $(CPPFLAGS) -DMJIT_HEADER $(srcdir)/vm.c -P
-	$(Q) (cmp vm.i $@ && $(ECHO0) $@ unchanged && $(RM) vm.i) || $(MV) vm.i $@
+	$(Q) $(IFCHANGE) $@ vm.i
 
 $(MJIT_MIN_HEADER): rb_mjit_header.h $(srcdir)/tool/transform_mjit_header.rb
 	$(ECHO) building $@