nobu	2016-09-04 15:15:58 +0900 (Sun, 04 Sep 2016)

  New Revision: 56068

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=56068

  Log:
    rbinstall.rb: chdir to gem directory [ci skip]
    
    * tool/rbinstall.rb (gem): load gemspec files under each
      directories, since some gemspecs read files there.

  Modified files:
    trunk/tool/rbinstall.rb
Index: tool/rbinstall.rb
===================================================================
--- tool/rbinstall.rb	(revision 56067)
+++ tool/rbinstall.rb	(revision 56068)
@@ -755,7 +755,11 @@ install?(:ext, :comm, :gem) do https://github.com/ruby/ruby/blob/trunk/tool/rbinstall.rb#L755
   }
   gem_ext_dir = "#$extout/gems/#{CONFIG['arch']}"
   extensions_dir = Gem::StubSpecification.gemspec_stub("", gem_dir, gem_dir).extensions_dir
-  Gem::Specification.each_spec([srcdir+'/gems/*']) do |spec|
+  Gem::Specification.each_gemspec([srcdir+'/gems/*']) do |path|
+    dir = File.dirname(path)
+    spec = Dir.chdir(dir) {
+      Gem::Specification.load(File.basename(path))
+    }
     spec.extension_dir = "#{extensions_dir}/#{spec.full_name}"
     if File.directory?(ext = "#{gem_ext_dir}/#{spec.full_name}")
       spec.extensions[0] ||= "-"

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