[Xenomai-help] License Question

[Xenomai-help] License Question

[Cagnulein]

Hi, i'm following with huge interest this project and i would like to join
in some way.

I'm developping some real time driver module for an embedeed system and i
would like to release the source code.

I'm developping an application too that uses xenomai + my realtime drivers.

This application links xenomai_native.

I've only a question: following the gpl/lgpl license, do i have the duty
to release my application source code?

If you can't answer ( we are technicians not lawyers :) ), do you know
someone who could answer to this question?

Thanks in advance.
Roberto

Re: [Xenomai-help] License Question

[Gilles Chanteperdrix]

Cagnulein wrote:
> Hi, i'm following with huge interest this project and i would like to join
> in some way.
> 
> I'm developping some real time driver module for an embedeed system and i
> would like to release the source code.
> 
> I'm developping an application too that uses xenomai + my realtime drivers.
> 
> This application links xenomai_native.
> 
> I've only a question: following the gpl/lgpl license, do i have the duty
> to release my application source code?

Kernel-space is GPL, user-space is LGPL. So, it means that you must
distribute the driver source code with the application, you must
distribute the application source code with the application if it uses
the native skin in kernel-space, and you must distribute the source code
of the modified Xenomai libraries if you modified it, with the
application, if the application uses the native skin in user-space.

-- 
					    Gilles.

Re: [Xenomai-help] License Question

[Philippe Gerum]

On Mon, 2010-10-11 at 09:50 +0200, Cagnulein wrote:
> Hi, i'm following with huge interest this project and i would like to join
> in some way.
> 
> I'm developping some real time driver module for an embedeed system and i
> would like to release the source code.
> 
> I'm developping an application too that uses xenomai + my realtime drivers.
> 
> This application links xenomai_native.
> 
> I've only a question: following the gpl/lgpl license, do i have the duty
> to release my application source code?
> 
> If you can't answer ( we are technicians not lawyers :) ), do you know
> someone who could answer to this question?

Our licensing scheme is plain simple:

- your kernel-based code based on the Xenomai infrastructure falls under
the kernel license; typically, your driver is concerned. This is GPL
land.

- linking against Xenomai's libnative support makes your application
fall under the LGPL. Distributing it does not require you to provide its
source code (this does not however invalidate any other reasons why you
would have to provide such code, if any -- but LGPL does not require
that).

-- 
Philippe.

Re: [Xenomai-help] License Question

[Cagnulein]

> On Mon, 2010-10-11 at 09:50 +0200, Cagnulein wrote:
>> Hi, i'm following with huge interest this project and i would like to
>> join
>> in some way.
>>
>> I'm developping some real time driver module for an embedeed system and
>> i
>> would like to release the source code.
>>
>> I'm developping an application too that uses xenomai + my realtime
>> drivers.
>>
>> This application links xenomai_native.
>>
>> I've only a question: following the gpl/lgpl license, do i have the duty
>> to release my application source code?
>>
>> If you can't answer ( we are technicians not lawyers :) ), do you know
>> someone who could answer to this question?
>
> Our licensing scheme is plain simple:
>
> - your kernel-based code based on the Xenomai infrastructure falls under
> the kernel license; typically, your driver is concerned. This is GPL
> land.
>
> - linking against Xenomai's libnative support makes your application
> fall under the LGPL. Distributing it does not require you to provide its
> source code (this does not however invalidate any other reasons why you
> would have to provide such code, if any -- but LGPL does not require
> that).
>
> --
> Philippe.
>
>
>

You have been very clear.
Thank you and thank Gilles Chanteperdrix ;)
I hope I will release something soon.
Bye
Roberto