Re: [fluid-dev] About TEFview

[MINGFEN WANG]

Hi,

I have found one way to respect LGPL license on iOS, you can dynamically link 
the library of Fluid synth, and place this version on the supporting site, if 
Fluidsynth upgrades, users just need to replace its library, but the user's 
device must have been jail broken to achieve the installation.

But I'm not sure if this is a legal method.

Art
在 2011-12-9，下午7:29， Pedro Lopez-Cabanillas 写道：

> Hi,
> 
> On Friday 09 December 2011, Mathieu LESCHEMELLE wrote:
>> 
>> Hello,
>> 
>> I'm the developer of TablEdit, a tablature editor (shareware) and TEFview, 
> the free viewer for reading, printing and listening TablEdit files 
> (www.tabledit.com/tefview)
>> 
>> I have been strongly and regularly asked to create a TEFview version for 
> iOS.
>> 
>> This application will be 100% free as its big brothers for Windows and Mac 
> OSX. It would be able to open other file formats as MusicXML, ASCII tabs, 
> maybe PowerTab and 
>> Guitar Pro tablatures. 
>> 
>> I've not yet decided what I do regarding the MIDI output. I could use a 
> commercial SDK or your Fluidsynth library.
>> 
>> In fact, I just need the synthetizer to send MIDI events in real time. I 
> don't need the MIDI player or even the sequencer.
>> 
>> The problem is to conform to the LGPL. I would be delighted to upgrade my 
> software when you release a new version. Unfortunately, I didn't find how to 
> run the latest 
>> versions of your product on iOS. I'm stuck on 1.0.9, which is perfect for 
> what I want to do BTW.
>> 
>> Please let me have your thoughts.
>> 
>> Matthieu
>> 
> 
> What is your problem with the LGPL? 
> 
> The conditions are (summary of the section 6 of the LGPL v2.1 license):
> * You must release all your changes to FluidSynth source code under the LGPL.
> * You must release all other code of your application, either as source or as 
> linkable object files, so that an independent user can relink the application 
> with a different version of FluidSynth. 
> 
> See http://www.gnu.org/licenses/lgpl-2.1.html
> 
> FluidSynth > 1.0.9 depends on glib, so you need to build and link glib and 
> gthread for your iOS app as well. This library is also LGPL licensed.
> 
> Please ask your questions on the mailing list where everyone can benefit 
> from the answer. Thanks!
> 
> Regards,
> Pedro
> 
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