[Interest] Qt 5.3 vs Qt 5.4 (etc)

[Bo Thorsen]

Den 20-01-2015 kl. 11:47 skrev René J.V. Bertin:
> On Monday January 19 2015 19:33:21 Thiago Macieira wrote:
>
>> By the way, I've been meaning to add a patch to Qt that would cause one
>> library to use a symbol from QtCore that has the exact Qt version number in
>> its ELF symbol. Would this help in the packaging and ensuring everything is
>> ship-shape?
>>
>> Like the GLIBCXX_3.4.20 version that the other thread is talking about, but
>> removing that symbol in a new version.
> But wouldn't that break backwards compatibility?

Actually the exact opposite. Doing this allows a library to have several 
binary incompatible versions of the same symbol in one library. glibc 
does this a lot.

The problem for Qt is that it has to be the same for all platforms, and 
I'm not sure this is something that's supported on systems that don't 
use gnu binutils.

Bo.

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