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From Christofer Dutz <>
Subject Using GPLv3 in the build?
Date Wed, 09 Jan 2019 14:53:01 GMT
Hi all,

I just double checked the text on the GPLv3 compatibility.
Stupid thing is the problem I’m having isn’t really covered by that [1].

The case I’m currently having is that there is a toolset called Kaitai [2], which sounds
interesting for the Apache PLC4X project.
In general you define a data-format and have it generate model, serializer and parser in multiple
languages (Similar to Thrift or Protobuf, but with a focus on the transport data-format and
not the model).

This consists of a compiler and a runtime.

The compiler generates code from sources which use the runtime libraries.
The runtime libraries are Apache 2.0 and MIT licensed, so this would be ok
The compiler however is GPLv3 …

Now we would not be bunding the compiler and the users wouldn’t need to use it when using
PLC4X as it’s only needed in the code-generation phase of the build.

So before I throw the idea over board, I just wanted to double-check this special case.



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