From: Michael Palimaka <kensington@gentoo.org>
To: gentoo-user@lists.gentoo.org
Subject: [gentoo-user] Re: emerge -e errors right after install
Date: Sat, 17 Aug 2013 23:51:59 +1000 [thread overview]
Message-ID: <kunv5n$rvj$1@ger.gmane.org> (raw)
In-Reply-To: <20130816223802.GB30183@waltdnes.org>
On 17/08/2013 08:38, Walter Dnes wrote:
>
> I have the following in make.conf
>
> CFLAGS="-O2 -march=native -fomit-frame-pointer -pipe -fno-unwind-tables -fno-asynchronous-unwind-tables"
> CXXFLAGS="${CFLAGS}"
>
> ...where "-march=native" will always work correctly for a local build.
> The only possible worry is if you're cross-compiling and or distributing
> a binary to multiple machines. It also saves me the headache of
> figuring out the CFLAGS setting whenever I get a new machine. You still
> have to set up the correct processor in the kernel, however.
>
While -march=native is generally good advice, GCC is not perfect and on
occasion it can flags to be enabled that are not supported, resulting in
the invalid instruction error.
next prev parent reply other threads:[~2013-08-17 13:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-16 13:22 [gentoo-user] emerge -e errors right after install Francisco Ares
2013-08-16 13:59 ` [gentoo-user] " Michael Palimaka
2013-08-16 14:58 ` Francisco Ares
2013-08-16 18:18 ` Francisco Ares
2013-08-16 22:38 ` Walter Dnes
2013-08-17 13:51 ` Michael Palimaka [this message]
2013-08-17 16:15 ` Francisco Ares
2013-08-17 16:09 ` Francisco Ares
2013-08-17 7:52 ` [gentoo-user] " Stroller
2013-08-17 16:13 ` Francisco Ares
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