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Re: [tdf-discuss] macro compatibility between LO and AOO?


On 06.03.2013 15:25, Stephan Bergmann wrote:
On 03/06/2013 09:00 AM, Andre Fischer wrote:
On 05.03.2013 18:29, Michael Meeks wrote:
On Tue, 2013-03-05 at 09:19 -0800, Fred Ollinger wrote:
I was wondering if libreoffice and aooo can't agree to
some basic level api for 3rd party developers?
    It's an interesting discussion; but in the absence of any concrete
code, patches etc. it doesn't belong on the libreoffice developer list;

Talking about a concrete change is a good idea so please let me ask a
question similar to one I asked at FOSDEM but to which I got no clear
answer.  Probably because of my bad English that is even worse when I
speak it.

Stephan Bergman talked about "Well-typed UNO", something that would
involve incompatible changes to the UNO API.  I would like to know if
LibreOffice and Apache OpenOffice could work together on this. I am
just talking about changes on API level not the underlying
implementation.  That would be something that both projects would do
independently.

First off, depends on what you mean with "UNO API." One customary meaning is the set of UNOIDL entities (mainly) declared in udkapi/ and offapi/ .idl files. (LibreOffice tries to meticulously track any incompatible changes it does there, see e.g., the "API Changes" section at <http://www.libreoffice.org/download/4-0-new-features-and-fixes/>.)

Another customary meaning is the broader concept of stable interface the URE offers, including C ABI, file formats, wire protocols, etc. My hope is that my work on changing the type representation does not affect the former, only the latter (file formats etc.). And, obviously, it will need to take care of a backward-compatibility plan.

By "UNO API" I mean everything that affects a packaged extension, that is basically your option B. So if I understand you correctly that an extension developer just has to recompile (for a C++ extension) the source code, repackage the extension and is done (with respect to your changes). That sounds good.


That said, I can only repeat now what I already said at FOSDEM, that I'm going to well document all the changes to any specifications---just like I did for any other changes to UNO I did over the last ten years or so. And, as always, any input is highly welcome.

Great. Thanks.
Do you have a pointer to the relevant documentation?

-Andre


Stephan


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