Wireshark-bugs: [Wireshark-bugs] [Bug 10792] SSE 4.2 support being both enabled and disabled in
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Tue, 20 Jan 2015 08:57:26 +0000

Comment # 6 on bug 10792 from 
(In reply to Guy Harris from comment #5)
> (In reply to Guy Harris from comment #4)
> 
> > Hardware: x86 Gentoo
>  
> > We'll need to figure out why it's adding -mno-sse4.2.
> 
> It's probably Gentoo explicitly setting a whole bunch of build options based
> on whatever ebuild decides to set or not set.

No, that's not Gentoo doing the settings. It's some Gentoo user out there
beyond my control (although in this case it really was me).

The build scripts (ebuilds) Gentoo uses can't begin to determine what a Gentoo
user might set their CFLAGS to, so we try to make sure we offer ways to control
it instead of letting configure assume. And if they want to optimise for a
lowly ancient x86, their CFLAGS might reflect that by setting -mno-sse4.2.

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