$NetBSD: patch-aa,v 1.2 2015/06/04 13:20:11 taca Exp $

* Allow changeing rake command's name.
* Do not use obsolete Config but RbConfig

--- lib/mkrf/rakehelper.rb.orig	2015-05-30 13:40:54.000000000 +0000
+++ lib/mkrf/rakehelper.rb
@@ -5,7 +5,7 @@
 
 def rake(rakedir)
   Dir.chdir(rakedir) do
-    sh 'rake'
+    sh '@RAKE@'
   end
 end
 
@@ -41,7 +41,7 @@ end
 
 def setup_extension(dir, extension)
   ext = "ext/#{dir}"
-  ext_so = "#{ext}/#{extension}.#{Config::CONFIG['DLEXT']}"
+  ext_so = "#{ext}/#{extension}.#{RbConfig::CONFIG['DLEXT']}"
   ext_files = FileList[
     "#{ext}/*.c",
     "#{ext}/*.h",
@@ -105,7 +105,7 @@ end
 def sub_project(project, *targets)
   targets.each do |target|
     Dir.chdir "projects/#{project}" do
-      sh %{rake --trace #{target.to_s} }
+      sh %{@RAKE@ --trace #{target.to_s} }
     end
   end
 end