* lib/rubygems/installer.rb (build_extensions): Create extension

install destination before building extension.  Patch by Kenta Murata.
  [ruby-trunk - Bug #7897]
* test/rubygems/test_gem_installer.rb:  Test for the above.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39366 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Fri Feb 22 07:04:41 2013  Eric Hodel  <drbrain@segment7.net>
+
+	* lib/rubygems/installer.rb (build_extensions):  Create extension
+	  install destination before building extension.  Patch by Kenta Murata.
+	  [ruby-trunk - Bug #7897]
+	* test/rubygems/test_gem_installer.rb:  Test for the above.
+
 Fri Feb 22 06:30:57 2013  Eric Hodel  <drbrain@segment7.net>
 
 	* doc/globals.rdoc:  Document what setting $DEBUG does.

lib/rubygems/installer.rb

@@ -8,6 +8,7 @@ require 'rubygems/exceptions'
 require 'rubygems/package'
 require 'rubygems/ext'
 require 'rubygems/user_interaction'
+require 'fileutils'
 
 ##
 # The installer installs the files contained in the .gem into the Gem.home.
@@ -671,6 +672,8 @@ TEXT
                 end
 
       begin
+        FileUtils.mkdir_p dest_path
+
         Dir.chdir extension_dir do
           results = builder.build(extension, gem_dir, dest_path,
                                   results, @build_args)

test/rubygems/test_gem_installer.rb

@@ -137,6 +137,7 @@ load Gem.bin_path('a', 'executable', version)
     path = File.join @spec.gem_dir, "extconf_args"
 
     assert_equal args.inspect, File.read(path).strip
+    assert File.directory? File.join(@spec.gem_dir, 'lib')
   end
 
   def test_check_executable_overwrite