Am 27.07.2010 14:32, schrieb Vladimir Zhirov: > > So this seems unclear whether application that subclasses from > RTL/FCL/LCL is a derived work of RTL/FCL/LCL and must itself be > licensed under Modified LGPL, making source code open. > > BTW, LGPL v3 explicitly allows subclassing: > "Defining a subclass of a class defined by the Library is deemed a mode > of using an interface provided by the Library." > (http://www.gnu.org/licenses/old-licenses/lgpl-2.0.html#SEC3), > but Modified LGPL is based on LGPL v2. > > I understand that the whole point of Modified LGPL is to allow creating > closed-source products using FPC/Lazarus. But in the above aspect it > seems not clear enough.
Well, the point of the Modified LGPL above is not complete: the goal is also that one has to release changes like bug fixes to the RTL/FCL sources. So the thumb rule is pretty simple: as long as you use unmodified rtl/fcl sources/code, you don't have to release any source code. If you use modified rtl/fcl sources, you've to release the patches to the rtl/fcl sources. > > Would someone of the core team please comment on this? Subclassing a class which is under the modified LGPL used by FPC does not require to release any sources of the subclasses under the modified LGPL. _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
