Copied from #520:

@merlokk wrote:

As for JSON. I like to try https://github.com/akheron/jansson
What do you think? license MIT

@iceman1001 wrote:

don't know if the MIT license goes with GPL 2.0...

@pwpiwi wrote:

Yes, it does. And BTW: GPL3 doesn't!

@iceman1001 wrote:

MIT goes with GPL2.0, but not GPL3.0?? strange, all these licenses.. Maybe ask Akheron for a license that fits for proxmark3 project? I doubt that they dislike it.

@pwpiwi wrote:

I meant: GPLv3 doesn't go with GPLv2.

@iceman1001 wrote:

Not sure about that,
if a user wants to combine code licensed under different versions of GPL, then this is only allowed if the code with the earlier GPL version includes an "or any later version" statement

problem is all proxmark3 files has a somewhat incoherent GPL2 statements, there not just one license file. And then, the licens upholder (Westhues) or (akheron) would need to talk with eachother complaining that the proxmark3 project is violating the license. Long time I saw Westhues here.
It would come down to akheron, to complain to Westhues to change the problems which might occured.

I strongly doubt someone is interested that. And as a suggestion earlier, if the worry of the open source license, someone could ask the license holder of jansson json lib and ask for a version of their license which would work with GPL2.0, just like Adam Laure granted us.

These discussions tends to be theoretical threats more than realistic ones. So if you feel the GPL 3.0 parts of the current repo doesn't go with GPL2.0, do please bring it up with Jonathan Westhues.