Comment by diamondlovesyou
9 years ago
Except the GPL doesn't just encourage open sourcing works which use the GPL work as a dependency; it makes the open sourcing of any library/program/what-have-you a MANDATORY condition for use of the GPL work. This has nothing to due with modification of the GPL work; the condition is still in effect when no modifications, proprietary or otherwise, are required in the GPL work.
I'm actually in agreement with Ballmer on this one: GPL is cancer. And I love contributing to OSS in general.
moron4hire is correct.
If you are not distributing the software personally or outside your organization, the GPL does not apply to you. If what you are doing does not constitute a derivative work, then your software is also not affected by the GPL: if you're invoking GNU grep in your program, for example, your program does not need to be licensed under a GPL-compatible license.
For clarification, see https://www.gnu.org/licenses/gpl-faq.html
I am aware of these issues. I replied in-haste in-class, and didn't specify that I was only referring to library code. I instead used 'work', which was the wrong term; I apologize. Anyway, according to the GPL, using a GPL-ed library as a dependency in a larger codebase constitutes a derivative work (assuming distribution etc), thus requiring GPL-ing the whole larger codebase, which isn't cool (imo, of course).
That is completely incorrect. The GPL makes absolutely zero restriction on use. It's provisions only pertain to distribution.
If you are only using GPL'd software, there is no compulsion to release your software under the GPL. If you, on the other hand, are releasing a product to other people and you have found a piece of GPL'd software that provides enough value to you to bother including it in your project, then and only then are you compelled to open your source.