can we use Qt lgpl in android and ios ?

mouhamed

is there is any way to use LGPL in android and ios?

jsulm

@mouhamed LGPL should not be an issue. You just need to make sure you do not violate it. Most of Qt is licensed under LGPL3 now, also for Android/iOS.

mouhamed

@jsulm said in can we use Qt lgpl in android and ios ?:

LGPL3

how to not violate LGPL, should I only mention that I am using Qt and provide LGPL license link

jsulm

@mouhamed said in can we use Qt lgpl in android and ios ?:

should I only mention that I am using Qt and provide LGPL license link

You also have to give the user the possibility to replace Qt libraries with their own versions. And at this points it gets tricky for Android/iOS apps.
Take a look at https://www.qt.io/licensing/open-source-lgpl-obligations

And keep in mind: I'm not a lawyer :-)

aziesemer

With Qt 6.10.3 we were able to built Qt as dynamic frameworks instead (which may make it compatible with LGPLv3), and our prototype works: it runs on the arm64 simulator and links for devices.
Anyone has been down this road?

SGaist

WARNING: I am NOT a lawyer.
Technically, static builds are allowed with LGPL but you have to provide the build artifacts so other people can redo the linking with their own static version of the library. That's the very tricky part.