On 25 janv. 2013, at 18:13, Rainer Müller <[email protected]> wrote:

> This could still be okay if the actual CPU support is checked at runtime
> and a fallback code is provided.

Via a CPUID instruction? Could be, but I’m fairly dubious. If it were the case, 
why check the CPU type at configure time…

Anyhow, AFAIK, the Qt4-mac port I compile on my MacMini 2011 (AVX capable) has 
run flawlessly on my late 2008 MacBook (Core 2 Duo).

Cheers!
Vincent

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