license propagation

[efa]

I saw your code is GPL3, but I saw it used in a project without the release of the modified sources.
Are you informed about that, is it permitted?

[redcode]

Hi,

GPL v3?

The library is licensed under the LGPL v3 or later. This is clearly stated in the README.md. The project also includes the COPYING.LESSER file (containing the LGPL terms) and the COPYING file (containing the GPL text).

The only parts licensed under the GPL are the testing tools (test-Z80.c and step-test-Z80.c), which are used to test the library, and the code generation tools (generate-daa-af-table.c and generate-pf-parity-table.c), which are included for educational purposes to explain how two lookup tables were generated.

The source code of these small programs is not used to build the Z80 library, so the library itself remains LGPL-licensed.

That said, as you mentioned, the LGPL, like the GPL, does require modified versions of the library itself to be made available under the applicable license terms. However, this obligation applies to modifications to the library, not generally to the source code of a separate program that uses it, provided the LGPL's conditions are met.

Could you please let me know which program is using a modified version of the library without making the modifications available? And, if you don't mind me asking, how did you come across this?

Thanks!

[efa]

I want first try ask the other guy if he want release the sources

[redcode]

OK. If the author doesn't want to release the modified sources, they can request a special licensing, as explained in the README.md.