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

Alexander Duda Alexander.Duda at dfki.de
Tue Jul 1 09:58:16 CEST 2014 

Am 01.07.2014 um 09:32 schrieb Matthias Goldhoorn <matthias.goldhoorn at dfki.de>:

> @Ruby binding guy's:
> I think the problem with orocos.rb is related to some linking problems of the orocos extenstion.
> I attached the ldd output and the CMakeCache from my installation. So Far i see it should work.
> I compared the CMakeCache with my local one and can't find the fault here.
> 
> Has someone i idea what's going on here?
> 

The ruby extension is not linked against ruby. In general it is not nice but should not be a problem because the symbols are already known if the extension is loaded by ruby. 

You can try the following and post the output for all steps:

orocos.rb: rake
ruby —version
which ruby
which irb
irb -r 'orocos/rorocos'

Alex

> Best,
> Matthias
> 
> 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 list
>>>>>> Rock-users at dfki.de
>>>>>> http://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
>>>>> 
>>>>> _______________________________________________
>>>>> Rock-users mailing list
>>>>> Rock-users at dfki.de
>>>>> http://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
> 
> <ldd-output.txt><CMakeCache.txt>_______________________________________________
> Rock-dev mailing list
> Rock-dev at dfki.de
> http://www.dfki.de/mailman/cgi-bin/listinfo/rock-dev


--
Dipl.-Ing. Alexander Duda
Unterwasserrobotik
Robotics Innovation Center

Hauptgeschäftsstelle Standort Bremen:
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