Rails3.2からRails4.0最新バージョンに上げたところsporkを起動できなくなりました。
以下のようなエラーが出ます。

[hoge@CS-c014 apll]$ sudo bundle exec spork
Using RSpec, Rails
Preloading Rails environment
Loading Spork.prefork block...
cannot load such file -- spec_helper (LoadError)
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/activesupport-4.0.13/lib/active_support/dependencies.rb:229:in `require'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/activesupport-4.0.13/lib/active_support/dependencies.rb:229:in `block in require'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/activesupport-4.0.13/lib/active_support/dependencies.rb:214:in `load_dependency'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/activesupport-4.0.13/lib/active_support/dependencies.rb:229:in `require'
/poge/hoge/workspace/version/app/hogeapp/spec/support/lib/cached_object_loader_examples.rb:18:in `<top (required)>'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/activesupport-4.0.13/lib/active_support/dependencies.rb:229:in `require'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/activesupport-4.0.13/lib/active_support/dependencies.rb:229:in `block in require'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/activesupport-4.0.13/lib/active_support/dependencies.rb:214:in `load_dependency'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/activesupport-4.0.13/lib/active_support/dependencies.rb:229:in `require'
/poge/hoge/workspace/version/app/hogeapp/spec/spec_helper.rb:31:in `block (2 levels) in <top (required)>'
/poge/hoge/workspace/version/app/hogeapp/spec/spec_helper.rb:31:in `each'
/poge/hoge/workspace/version/app/hogeapp/spec/spec_helper.rb:31:in `block in <top (required)>'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/spork-1.0.0rc4/lib/spork.rb:24:in `prefork'
/poge/hoge/workspace/version/app/hogeapp/spec/spec_helper.rb:18:in `<top (required)>'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/activesupport-4.0.13/lib/active_support/dependencies.rb:223:in `load'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/activesupport-4.0.13/lib/active_support/dependencies.rb:223:in `block in load'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/activesupport-4.0.13/lib/active_support/dependencies.rb:214:in `load_dependency'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/activesupport-4.0.13/lib/active_support/dependencies.rb:223:in `load'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/spork-1.0.0rc4/lib/spork/test_framework.rb:138:in `block (2 levels) in preload'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/spork-rails-4.0.0/lib/spork/app_framework/rails.rb:8:in `preload'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/spork-1.0.0rc4/lib/spork/test_framework.rb:134:in `block in preload'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/spork-1.0.0rc4/lib/spork.rb:62:in `exec_prefork'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/spork-1.0.0rc4/lib/spork/test_framework.rb:120:in `preload'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/spork-1.0.0rc4/lib/spork/run_strategy/forking.rb:25:in `preload'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/spork-1.0.0rc4/lib/spork/runner.rb:75:in `run'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/spork-1.0.0rc4/lib/spork/runner.rb:10:in `run'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/gems/spork-1.0.0rc4/bin/spork:10:in `<top (required)>'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/bin/spork:23:in `load'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0/bin/spork:23:in `<main>'
No DRb server is running. Running in local process instead ...
No examples found.


Finished in 0.00058 seconds (files took 5.32 seconds to load)
0 examples, 0 failures

こちらを参考にrspecのバージョンも上げていこうと思いrspecのバージョンは2.99にしてます。
他sporkのバージョンは以下の通りです。
spork (1.0.0rc4)
spork-rails (4.0.0)

読み込んでいるspec/spec_helper.rbコードは以下のようになっています。

 31   Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}
 32
 33   RSpec.configure do |config|
 34     # ## Mock Framework
 35     #
 36     # If you prefer to use mocha, flexmock or RR, uncomment the appropriate line:
 37     #
 38     # config.mock_with :mocha
 39     # config.mock_with :flexmock
 40     # config.mock_with :rr
 41
 42     # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
 43     config.fixture_path = "#{::Rails.root}/spec/fixtures"
 44
 45     # If you're not using ActiveRecord, or you'd prefer not to run each of your
 46     # examples within a transaction, remove the following line or assign false
 47     # instead of true.
 48     config.use_transactional_fixtures = true

spec/support/**/*.rbのとこにrequre spec_helperが入ってたのでそれを除くとsporkは起動するようになりました。でもテストを流すと以下エラーになりました。

Exception encountered: #<NameError: uninitialized constant RSpec::Core::CommandLine>
backtrace:
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0rails/gems/spork-1.0.0rc4/lib/spork/test_framework/rspec.rb:11:in `run_tests'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0rails/gems/spork-1.0.0rc4/lib/spork/run_strategy/forking.rb:13:in `block in run'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0rails/gems/spork-1.0.0rc4/lib/spork/forker.rb:21:in `block in initialize'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0rails/gems/spork-1.0.0rc4/lib/spork/forker.rb:18:in `fork'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0rails/gems/spork-1.0.0rc4/lib/spork/forker.rb:18:in `initialize'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0rails/gems/spork-1.0.0rc4/lib/spork/run_strategy/forking.rb:9:in `new'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0rails/gems/spork-1.0.0rc4/lib/spork/run_strategy/forking.rb:9:in `run'
/poge/hoge/.rbenv/versions/2.2.3/gemsets/4.0rails/gems/spork-1.0.0rc4/lib/spork/server.rb:49:in `run'
/poge/hoge/.rbenv/versions/2.2.3/lib/ruby/2.2.0/drb/drb.rb:1624:in `perform_without_block'
/poge/hoge/.rbenv/versions/2.2.3/lib/ruby/2.2.0/drb/drb.rb:1584:in `perform'
/poge/hoge/.rbenv/versions/2.2.3/lib/ruby/2.2.0/drb/drb.rb:1657:in `block (2 levels) in main_loop'
/poge/hoge/.rbenv/versions/2.2.3/lib/ruby/2.2.0/drb/drb.rb:1653:in `loop'
/poge/hoge/.rbenv/versions/2.2.3/lib/ruby/2.2.0/drb/drb.rb:1653:in `block in main_loop'

調べてみると、書いてある通りgemを編集したら動作するようになりました。やっぱりgemを直接直すのも何なんでsporkではないものを使うべきでしょうか？