Hi,

FYI, I successfully build orocos_toolchain + rtt_ros_integration in one
isolated workspace :

mkdir -p ~/ws/src/orocos
cd ~/ws
git clone --recursive git://
gitorious.org/orocos-toolchain/orocos_toolchain.git -b toolchain-2.7
src/orocos/orocos_toolchain

git clone https://github.com/orocos/rtt_ros_integration.git
src/rtt_ros_integration

catkin_make_isolated --install