From f25c052bf260c2655b8cfaf9c8e447e5940548af Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 27 Nov 2014 08:10:21 +0000
Subject: [PATCH] prelude.c.tmpl: no preludes, no code.

* template/prelude.c.tmpl: no code if no prelude code is given.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48605 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog               | 4 ++++
 template/prelude.c.tmpl | 8 ++++++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index cc1a935fe8..819878132d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Nov 27 17:10:19 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* template/prelude.c.tmpl: no code if no prelude code is given.
+
 Thu Nov 27 13:11:00 2014  Koichi Sasada  <ko1@atdot.net>
 
 	* gc.c (objspace_malloc_increase): enable lazy sweep on GC by malloc()
diff --git a/template/prelude.c.tmpl b/template/prelude.c.tmpl
index 1f00bd66ab..00230ab6be 100644
--- a/template/prelude.c.tmpl
+++ b/template/prelude.c.tmpl
@@ -65,6 +65,7 @@ Prelude.new(output && output[/\w+(?=_prelude.c\b)/] || 'prelude', ARGV, vpath).i
 
  sources: <%= @preludes.map {|n,*| prelude_base(n)}.join(', ') %>
 */
+%unless @preludes.empty?
 #include "ruby/ruby.h"
 #include "internal.h"
 #include "vm_core.h"
@@ -80,9 +81,9 @@ static const char prelude_code<%=i%>[] =
 ;
 % }
 
-#define PRELUDE_COUNT <%=@have_sublib ? preludes.size : 0%>
-
 % if @have_sublib
+#define PRELUDE_COUNT <%=preludes.size%>
+
 struct prelude_env {
     volatile VALUE prefix_path;
 #if PRELUDE_COUNT > 0
@@ -134,9 +135,11 @@ prelude_require(VALUE self, VALUE nth)
 }
 
 % end
+%end
 void
 Init_<%=@init_name%>(void)
 {
+%unless @preludes.empty?
 % if @have_sublib
     struct prelude_env memo;
     ID name = rb_intern("TMP_RUBY_PREFIX");
@@ -166,5 +169,6 @@ Init_<%=@init_name%>(void)
     puts(prelude_code<%=i%>);
 % }
 #endif
+%end
 }
 <%end -%>