[Interest] Hiding a shared lib? Linux of course.

[Allan Sandfeld Jensen]

On Thursday 04 July 2013, Thiago Macieira wrote:
> On quinta-feira, 4 de julho de 2013 14.44.40, Diego Iastrubni wrote:
> > I was thinking something similar a few days ago. This is out of scope
> > for Qt5... but Qt6.. how about using namespaces to distinguish the Qt
> > releases?
> > 
> > Qt6::MainWindow w = new Qt6::MainWindow();
> > w->show();
> > 
> > using namespace Qt6;
> > MainWindow w = new MainWindow();
> > 
> > This could prevent sush crashes in the future right? The symbol names
> > will be differently, and in theory crazy people would be able to load
> > Q5 and Qt6 into the same memory address. yes, we might need to rename
> > also "a few" public functions... but this is doable, right?
> 
> Yes, it could, but it's unlikely we'll ever do that.
> 
> That would mean a full source-compatibility break.

Not necessarily I think. Wouldn't it be possible to let the headers declare 
the namespaced classes 'using'? 

For instance:

namespace Qt6 {
   class QString;
}

using Qt6::QString.

This would mean the QString  would still work in the global namespace when 
building but would be in the Qt6 namespace when linking

Br
`Allan