[Rock-dev] [Rock-users] Unable to start component by ruby

Sylvain Joyeux bir.sylvain at gmail.com
Wed Jul 2 09:46:07 CEST 2014 

In the long run, I think that we should never build orocos.rb with xenomai
enabled, it makes no sense. Which means that we should always build a
gnulinux RTT *and* a xenomai RTT when under xenomai. Unfortunately, I don't
know if anybody would have the time to implement / test this.

It would even make sense to allow selecting which components should be
built with Xenomai and which should not, but that would be an awful lot of
work to get right.

For what it's worth, Xenomai support is in a poor state in Rock because
LinuxRT is nowadays really really good even for demanding applications. But
YMMV.

Sylvain


On Wed, Jul 2, 2014 at 9:10 AM, Matthias Goldhoorn <
matthias.goldhoorn at dfki.de> wrote:

>  Ok, got the problem -- solved --
>
> It's related to this:
> http://www.kieltech.de/uweswiki/Xenomai -> Testing Xenomai
> you have to build the xenomai packages with " --enable-dlopen-skins"
> If you have done (and reinstalled) this, you have to add yourself to the
> xenomai group if you have followed this xenomai instructions
> http://www.stanley.gatech.edu/skelly/uncategorized/installing-xenomai-on-ubuntu-12-04/
> .
>
> Afterward for me everything seems to work fine,
> Best,
> Matthias
>
> P.S. error to search for:
>
> rb(main):001:0> require 'rorocos_ext'
> LoadError: libnative.so.3: shared object cannot be dlopen()ed -
>
>
>
> On 30.06.2014 13:57, Matthias Goldhoorn wrote:
>
> I got the same on my xenomai version of rock.
> I cc the rock-dev therefore.
>
> If there noone give's a hint, i will take a look during this week...
>
> Best,
> Matthias
>
>
>
> On 30.06.2014 13:50, Tavakoli Siavash wrote:
>
>  Recreating and resourcing the env.sh didn't help. Irb outputs some additional info:
>
> NotImplementedError: method `backtrace' called on unexpected T_NODE object (0x00000002b56bf0 flags=0x381c klass=0x0)
>          from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
>          from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
>          from (irb):1
>          from /usr/bin/irb1.9.1:12:in `<main>'
>
> Best,
> Siavash
> ________________________________________
> From: Matthias Goldhoorn [matthias.goldhoorn at dfki.de]
> Sent: Monday, June 30, 2014 2:18 PM
> To: Tavakoli Siavash
> Cc: rock-users at dfki.de
> Subject: Re: [Rock-users] Unable to start component by ruby
>
> If the suggestion from below (and rebuilding) does not help
>
> try:
>
> source env.sh
> irb
>   > require 'orocos'
>
> and post (if hopefully) the additional error msg.
>
> Best,
> Matthias
>
> On 30.06.2014 13:02, Sascha Arnold wrote:
>
>  Hello,
>
> I think to remember, that I solved this error once by recreate the
> env.sh with
>
>  autoproj envsh
>
>  and resource the environment
>
>  . env.sh
>
>  Maybe that helps.
>
> Best,
> Sascha
>
> On 30.06.2014 12:12, Tavakoli Siavash wrote:
>
>  Hi,
> Thanks for your reply.
> So I did:
>
> rm -r tools/orocos.rb/
> autoproj update
> amake
>
> but the error is still there. Maybe it was fixed in next or master?
>
> ________________________________________
> From: Matthias Goldhoorn [matthias.goldhoorn at dfki.de]
> Sent: Monday, June 30, 2014 12:05 PM
> To: rock-users at dfki.de; Tavakoli Siavash
> Subject: Re: [Rock-users] Unable to start component by ruby
>
> Hi,
> Please try to delete the whole orocos.rb folder and then run a update &&
> build again.
> We had some problems in the past with rebuilding of ruby packages.
>
>
> Best,
> Matthias
>
> On 30.06.2014 10:25, Tavakoli Siavash wrote:
>
>  Hello,
>
> I have created a component and wrote a script to run it by using the ruby interface but running the script fails with an error:
>
> Cannot require orocos.rb's Ruby/C extension
> If you are using Rock, this should have been done automatically.
> Run
>       amake orocos.rb
> and try again
>
> rebuilding orocos.rb doesn't help and I get the same error again. I'm running the stable branch and target is Xenomai.
>
> Thanks,
> Siavash
> _______________________________________________
> Rock-users mailing listRock-users at dfki.dehttp://www.dfki.de/mailman/cgi-bin/listinfo/rock-users
>
>  --
>      Dipl.-Inf. Matthias Goldhoorn
>      Space and Underwater Robotic
>
>      Universität Bremen
>      FB 3 - Mathematik und Informatik
>      AG Robotik
>      Robert-Hooke-Straße 1
>      28359 Bremen, Germany
>
>      Zentrale: +49 421 178 45-6611
>
>      Besuchsadresse der Nebengeschäftstelle:
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>
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>
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>
> _______________________________________________
> Rock-users mailing listRock-users at dfki.dehttp://www.dfki.de/mailman/cgi-bin/listinfo/rock-users
>
>  --
>    Dipl.-Inf. Matthias Goldhoorn
>    Space and Underwater Robotic
>
>    Universität Bremen
>    FB 3 - Mathematik und Informatik
>    AG Robotik
>    Robert-Hooke-Straße 1
>    28359 Bremen, Germany
>
>    Zentrale: +49 421 178 45-6611
>
>    Besuchsadresse der Nebengeschäftstelle:
>    Robert-Hooke-Straße 5
>    28359 Bremen, Germany
>
>    Tel.:    +49 421 178 45-4193
>    Empfang: +49 421 178 45-6600
>    Fax:     +49 421 178 45-4150
>    E-Mail:  matthias.goldhoorn at informatik.uni-bremen.de
>
>    Weitere Informationen: http://www.informatik.uni-bremen.de/robotik
>
>
>
> --
>  Dipl.-Inf. Matthias Goldhoorn
>  Space and Underwater Robotic
>
>  Universität Bremen
>  FB 3 - Mathematik und Informatik
>  AG Robotik
>  Robert-Hooke-Straße 1
>  28359 Bremen, Germany
>
>  Zentrale: +49 421 178 45-6611
>
>  Besuchsadresse der Nebengeschäftstelle:
>  Robert-Hooke-Straße 5
>  28359 Bremen, Germany
>
>  Tel.:    +49 421 178 45-4193
>  Empfang: +49 421 178 45-6600
>  Fax:     +49 421 178 45-4150
>  E-Mail:  matthias.goldhoorn at informatik.uni-bremen.de
>
>  Weitere Informationen: http://www.informatik.uni-bremen.de/robotik
>
>
> _______________________________________________
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>
>
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