Hi,
thanks for your reply,
As recommended I installed orocos using orocos_toolchain from ros by

sudo apt-get install ros-fuerte-orocos-toolchain ros-fuerte-rtt-ros-integration ros-fuerte-rtt-geometry ros-fuerte-rtt-ros-comm ros-fuerte-rtt-common-msgs

which worked without any errors.
Now there are some things left I need to do I guess:

* recompiling rtt for RTAI (sources are in 'roscd rtt'). Can I
recompile as described in README or is there a special procedure for
ROS?
* finding the Simulink blocks for orocos again on the homepage (I
found them a while ago but can't find them anymore. Could someone
provide me a link)
* Where can I find some ocl samples in ROS? (I found 'rosrun ocl
helloworld' but I do not realy know how to use this)

Thanks Johannes

Am 17.04.2013 23:12, schrieb Peter Soetens:
> On Wed, Apr 17, 2013 at 4:57 PM, Johannes Mayr <joh [dot] mayr [..] ...> wrote:
>> Hi,
>> I want to install Orocos on my RTAI 3.8 and for a first step I just try to
>> install the system with -DOROCOS_TARGET=gnulinux to learn more about Orocos.
>> But I already start to have troubles during installation.
>> I did the following:
>>
>> wget
>> http://people.mech.kuleuven.be/~orocos/pub/stable/rtt/v2.6.0/orocos-rtt-...
> If you're building from source, then please use the git repository of
> rtt or the orocos toolchain. We fixed many bugs since that release...
>
> Also, it's very uncommon to only download RTT, you should download the
> complete Orocos toolchain, since that is the configuration in which we
> test it.
>
>> tar -xvf orocos-rtt-2.6.0-src.tar.gz
>> cd orocos-toolchain-2.6.0/rtt/
>> mkdir build
>> cd build
>> cmake .. -DOROCOS_TARGET=gnulinux -DCMAKE_PREFIX_PATH=/opt/orocos
>> -DCMAKE_INSTALL_PREFIX=/usr/local -DLINUX_SOURCE_DIR=/usr/src/linux
>> make
>> make check (should be availabe accordig to the README but results in an
>> error)
>> make install
>>
>> To my understanding make install should install the files to /opt/orocos but
>> it is installing everything to ../install. I now did this by hand and copied
>> the files from install to /opt/orocos (cd install, cp * -R /opt/orocos).
> When ROS_ROOT is set, we override this, so unset ROS_ROOT.
>
>> The next question is, how can I test this installation? In the FAQ I read
>> that I should intall ocl and use one of the examples to see if everything is
>> working. So I did
>>
>> wget
>> http://people.mech.kuleuven.be/~orocos/pub/stable/ocl/v2.6.0/orocos-ocl-...
>> tar -xvjf orocos-ocl-2.6.0-src.tar.bz2
>> cd orocos-toolchain-2
>> CMAKE_PREFIX_PATH=/opt/orocos cmake .
>>
>> and got the following error:
>>
>> Can't build real-time logging service since log4cpp was not found.
> Part of the orocos toolchain... please use autoproj or a manual git
> checkout as documented here:
>
> http://www.orocos.org/wiki/orocos/toolchain/quick-start
>
>> I guess this questions/problems are just easy to solve but I tried it for a
>> while and can't find the solution.
>> Is there also a good tutorial for the connection to ROS?
> What we have is this:
>
> http://www.ros.org/wiki/rtt_ros_integration
> http://www.ros.org/wiki/orocos_toolchain
>
> (use fuerte)
>
> Peter