Re: [gentoo-user] Missing CPU options in make menuconfig

[Adam Carter <adamcarter3@gmail.com>]

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The experimental use flag turns on the other arch's in gentoo-sources.
Perhaps that will help identify which is the relevant patch?

On Thu, Jul 21, 2016 at 11:07 AM, Fernando Rodriguez <cyklonite@gmail.com>
wrote:

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> On 07/20/2016 07:38 PM, Fernando Rodriguez wrote:
> > On 07/20/2016 02:54 PM, Neil Bothwick wrote:
> >> On Wed, 20 Jul 2016 14:33:04 -0400, Fernando Rodriguez wrote:
> >
> >>> I don't use gentoo sources but I remember reading about gentoo patches
> >>> for processor specific optimizations and being tempted to try them. Is
> >>> it possible that is what you're refering to?
> >>>
> >>> The vanilla sources only shows 5 choices for me on amd64:
> >>> (X) Opteron/Athlon64/Hammer/K8
> >>> ( ) Intel P4 / older Netburst based Xeon
> >>> ( ) Core 2/newer Xeon
> >>> ( ) Intel Atom
> >>> ( ) Generic-x86-64
> >>>
> >>> And it shows a different set of options when I run it on an x86
> machine.
> >
> >> That's what I get here, but help lists all the ones I get in
> >> gentoo-sources, apart from MNATIVE, which indicates to me that those
> >> options should be available, once I work out how to switch them on.
> >
> > Disable CONFIG_64BIT and you'll get them all.
>
> And for future references, here's how I found out:
>
> 1. On the sources where you have the options highlight one of them and
>    press ? (help). You'll see X86_32 under "Depends on:".
>
> 2. Hit ESC twice and then twice again to return to a menu with
>    search functionality. Then type /X86_32 and hit enter. You'lll see that
>    the option depends on !64BIT, so you need to disable CONFIG_64BIT for
>    X86_32 to be available.
>
> 3. After disabling CONFIG_64BIT on the kernel where the options where
> missing
>    I searched X86_32 again and this time it has [=y] next to it so it came
>    on automatically and the options showed up but for some options you
> need to
>    enable manually after enabling the dependencies.
>
> - --
>
> Fernando Rodriguez
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