From 1984db2db8ee54c33aabf6994718b972c56e2283 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Fri, 19 Apr 2024 10:24:08 +0900
Subject: [PATCH] Preserve old encinit.c if unchanged

---
 enc/encinit.c.erb   | 3 +++
 enc/make_encmake.rb | 8 ++------
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/enc/encinit.c.erb b/enc/encinit.c.erb
index 120408f8e3..3662ba200d 100644
--- a/enc/encinit.c.erb
+++ b/enc/encinit.c.erb
@@ -1,3 +1,6 @@
+/* Automatically generated from <%= erb.filename %>
+ * Do not edit<%# directly%>.
+ */
 /* Copyright 2012 Google Inc. Some Rights Reserved.
  * Author: yugui@google.com (Yugui Sonoda)
  */
diff --git a/enc/make_encmake.rb b/enc/make_encmake.rb
index 9761edd6d9..96d1944bcb 100755
--- a/enc/make_encmake.rb
+++ b/enc/make_encmake.rb
@@ -147,10 +147,6 @@ if MODULE_TYPE == :static
     Dir.mkdir 'enc'
   rescue Errno::EEXIST
   end
-  File.open("enc/encinit.c", "w") {|f|
-    f.puts "/* Automatically generated from enc/encinit.c.erb"
-    f.puts " * Do not edit."
-    f.puts " */"
-    f.puts tmp
-  }
+  require 'tool/lib/output'
+  Output.new(path: "enc/encinit.c", ifchange: true).write(tmp)
 end