rbinstall.rb: always make gem directories

* tool/rbinstall.rb (gem): always make gem directories regardless
  of zlib.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49269 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

tool/rbinstall.rb

@@ -707,17 +707,17 @@ install?(:ext, :comm, :gem) do
 end
 
 install?(:ext, :comm, :gem) do
+  gem_dir = Gem.default_dir
+  directories = Gem.ensure_gem_subdirectories(gem_dir, :mode => $dir_mode)
+  prepare "bundle gems", gem_dir, directories
+  install_dir = with_destdir(gem_dir)
   begin
     require "zlib"
   rescue LoadError
   end
   if defined?(Zlib)
-    require 'pathname'
-    gem_dir = Gem.default_dir
-    directories = Gem.ensure_gem_subdirectories(gem_dir, :mode => $dir_mode)
-    prepare "bundle gems", gem_dir, directories
     options = {
-      :install_dir => with_destdir(gem_dir),
+      :install_dir => install_dir,
       :domain => :local,
       :ignore_dependencies => true,
       :dir_mode => $dir_mode,
@@ -726,14 +726,14 @@ install?(:ext, :comm, :gem) do
     }
     Dir.glob(srcdir+'/gems/*.gem').each do |gem|
       Gem.install(gem, Gem::Requirement.default, options)
-      gemname = Pathname(gem).basename
+      gemname = File.basename(gem)
       puts "#{" "*30}#{gemname}"
     end
     # fix directory permissions
     # TODO: Gem.install should accept :dir_mode option or something
-    File.chmod($dir_mode, *Dir.glob(with_destdir(gem_dir)+"/**/"))
+    File.chmod($dir_mode, *Dir.glob(install_dir+"/**/"))
     # fix .gemspec permissions
-    File.chmod($data_mode, *Dir.glob(with_destdir(gem_dir)+"/specifications/*.gemspec"))
+    File.chmod($data_mode, *Dir.glob(install_dir+"/specifications/*.gemspec"))
   else
     puts "skip installing bundle gems because of lacking zlib"
   end