[Interest] Qt Application - Disabling AVX/AVX2

[coroberti .]

On Wed, Apr 22, 2020 at 6:17 PM Thiago Macieira
<thiago.macieira at intel.com> wrote:
>
> On Tuesday, 21 April 2020 14:26:13 PDT coroberti . wrote:
> > Hi,
> > Is it enough to define:
> >
> > QMAKE_CFLAGS -= -arch:AVX -arch:AVX2
> > QMAKE_CXXFLAGS -=  -arch:AVX -arch:AVX2
> >
> > to ensure that compilation by QtCreator with Qt-5.14-MSVC Windows
> > will not compile with such optimization flags even if avx and avx2
> > instructions have not been disabled in Qt-library itself?
> Since those options aren't added to the CFLAGS or CXXFLAGS in the first place,
> by default what you're tryng to do is a no-op.
> Why do you think there are AVX instructions in your binary? And how did you
> turn them on in the first place?
> Thiago Macieira - thiago.macieira (AT) intel.com
>   Software Architect - Intel System Software Products

Thank you for your reply.

Building 5.14.2, I was alerted by report from config that avx
instructions are enabled.

Clear, I need to investigate it more.

Thanks,
Robert