message: farm: Pass cxx_toolkit to go.
diff: @@ -107,7 +107,8 @@ if project == 'Filesystem':
  if os_ == 'windows':
  go_toolkit = drake.go.Toolkit(os = 'windows',
  arch = 'amd64',
  - path = go_path)
  + path = go_path,
  + cxx_toolkit = cxx_toolkit)
  else:
  go_toolkit = drake.go.Toolkit(path = go_path)
  go_config = drake.go.Config()
  