Fix RubyGems search paths when building gems with native extension (rhbz#979133).

operating_system.rb

@@ -28,7 +28,13 @@ module Gem
     # platform independent (:gem_dir) and dependent (:ext_dir) files.
 
     def default_dirs
-      @libdir ||= ConfigMap[:sitelibdir] == ConfigMap[:sitearchdir] ? ConfigMap[:datadir] : ConfigMap[:libdir]
+      @libdir ||= case RUBY_PLATFORM
+      when 'java'
+        ConfigMap[:datadir]
+      else
+        ConfigMap[:libdir]
+      end
+
       @default_dirs ||= Hash[default_locations.collect do |destination, path|
         [destination, {
           :bin_dir => File.join(path, ConfigMap[:bindir].split(File::SEPARATOR).last),

ruby.spec

@@ -26,7 +26,7 @@
 %endif
 
 
-%global release 11
+%global release 12
 %{!?release_string:%global release_string %{?development_release:0.}%{release}%{?development_release:.%{development_release}}%{?dist}}
 
 %global rubygems_version 2.0.3
@@ -882,6 +882,10 @@ make check TESTS="-v $DISABLE_TESTS"
 %{ruby_libdir}/tkextlib
 
 %changelog
+* Thu Jul 04 2013 Vít Ondruch <vondruch@redhat.com> - 2.0.0.247-12
+- Fix RubyGems search paths when building gems with native extension
+  (rhbz#979133).
+
 * Tue Jul 02 2013 Vít Ondruch <vondruch@redhat.com> - 2.0.0.247-11
 - Fix RubyGems version.