/usr/ is in ruby-pkg-config 1.1.5-1.
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/usr/share/doc/ruby-pkg-config/
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/pkg-config-1.1.5.gemspec
/usr/share/doc/
/usr/share/doc/ruby-pkg-config/README.rdoc
/usr/share/doc/ruby-pkg-config/copyright
/usr/share/doc/ruby-pkg-config/changelog.Debian.gz
/usr/share/doc/ruby-pkg-config/TODO.Debian
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/pkg-config/
/usr/lib/ruby/vendor_ruby/pkg-config/version.rb
/usr/lib/ruby/vendor_ruby/pkg-config.rb