From 3cb0c6e39e52df0b965fd4f7639a5af2e251dbcf Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 11 Apr 2015 23:31:48 +0000
Subject: [PATCH] rbinstall.rb: destdir

* tool/rbinstall.rb (gem): use installed ruby under destdir.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50238 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 tool/rbinstall.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tool/rbinstall.rb b/tool/rbinstall.rb
index 1ce2983493..3102b927f2 100755
--- a/tool/rbinstall.rb
+++ b/tool/rbinstall.rb
@@ -775,7 +775,7 @@ install?(:ext, :comm, :gem) do
   end
   next if gems.empty?
   if defined?(Zlib)
-    ENV['DESTDIR'] = $destdir if $destdir
+    Gem.instance_variable_set(:@ruby, with_destdir(File.join(bindir, ruby_install_name)))
     gems.each do |gem|
       Gem.install(gem, Gem::Requirement.default, options)
       gemname = File.basename(gem)