[Qt-interest] Backward binary compatibility guarantee

[Rush Manbert]

On Dec 16, 2009, at 2:45 PM, Thiago Macieira wrote:

> Em Quarta-feira 16. Dezembro 2009, às 20.19.45, Rush Manbert escreveu:
>> I found this coding conventions page:
>> 
>>    http://qt.gitorious.org/qt/pages/CodingConventions
>> 
>> that says:
>>    "Keep backward binary compatibility + backward source code
>> compatibility in minor releases"
>> 
>> which sounds like just what I wanted to hear.
>> 
>> I was wondering whether this is a guarantee that Nokia makes to users of Qt
>> and where it is published.
>> 
>> Can anyone provide a pointer?
> 
> I have no idea if we have a document.
> 
> Basically, Qt 4 is a binary-compatible major series. Binary and source 
> compatibility flows forwards across minor releases (i.e., if you compile with 
> 4.x, it'll run with 4.y provided y >= x). Binary and source compatibility are 
> forwards and backwards withing the same minor series (if it compiles with Qt 
> 4.x.y, it compiles with Qt 4.x.z and will run with 4.x.z).

Thank you. That agrees with what I read on the Coding Conventions page.

- Rush
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