RE: [Help-glpk] Command-line and GPL

[Meketon, Marc]

People build commercial applications all the time under Linux.  These
applications implicitly call the Linux kernel, and perhaps explicitly
call on a variety of commands (which are really applications) like "mv",
"cp" and so on.  Yet these commercial applications are not under the
GPL.  I think Luca's situation is similar.

Another example, a lot of ISP providers are able to offer Jabber, MySQL
and other services that are GPL'd.  Customers are invited to write
(non-GPL'd) applications that make use of these services.  Such as an MS
Access and Excel application that links to a MySQL instance on an ISP
provider.

-Marc

-----Original Message-----
From: address@hidden
[mailto:address@hidden On Behalf
Of Andrew Makhorin
Sent: Friday, June 22, 2007 1:39 PM
To: Luca Castelluzzo
Cc: address@hidden
Subject: Re: [Help-glpk] Command-line and GPL

> I would like to use the GLPK by calling the glpsol command from a Java

> program (through system call) that has to solve a specific MIP 
> problem. This program could build a MathProg file on-the-fly, invoke 
> glpsol with its arguments and then get the solution from the output 
> file. Therefore, it would be neither statically nor dynamically linked

> to the GLPK.

Glpsol is linked to the glpk library, so your program is linked to it
indirectly.

> My question is: am I forced to release this program under the GPL?
> I've already read
> http://www.gnu.org/licenses/gpl-faq.html#MereAggregation but it didn't

> help.

Why do not implement your program under GPL? It would be in the spirit
of GNU software.



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