[Development] QT_GCC_MAJOR_VERSION and building with clang...

[Thiago Macieira]

On Saturday, 7 December 2019 02:22:53 PST René J. V. Bertin wrote:
> > We already do that. The information is obtained for every qmake parent
> > project run.
> 
> Are you 100% certain it is done 100% of the time? This is probably where the
> MAJOR_VERSION = 3 above came from: a test to see if that trickled through
> into the error message.

Yes, I am. I wrote the initial code and Ossi helped perfect it. I also proved 
it with the paste in my reply.

But note we're talking about different variables here. qmake does find the 
version every time. But there's also a set of variables that are hardcoded 
from qtbase's configure and indicate the version that qtbase was compiled 
with. The project you're trying to use may be using the ones from qtbase.

> >> It was a test, but IMHO it should be possible (as long as you're not also
> >> mixing libstdc++ and libc++).
> > 
> > Building different parts of Qt with different compilers is not supported.
> 
> The test was to see if the "stdlib.h not found" error I was getting was due
> to building with clang. Turns out it was due to some other improbability.


-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel System Software Products