Defined in /home/build/jenkins/workspace/RockBootstrap19/FLAVOR/master/label/DebianUnstable/dev/autoproj/remotes/orocos.toolchain/orocos.osdeps as

omniorb:
    debian,ubuntu:
        squeeze,9.04,9.10,10.04,10.10,11.04:
        - omniidl4
        - libomniorb4-dev
        - omniorb4-nameserver
        default:
        - omniidl
        - libomniorb4-dev
        - omniorb-nameserver
      gentoo: net-misc/omniORB
      fedora: omniORB-devel