Re: [gentoo-user] CFLAGS for Pentium Dual Core E2160 ?

[Stefan G. Weichinger]

Bo Ørsted Andresen schrieb:
> On Sat, Nov 10, 2007 at 02:18:46PM +0000, David W Noon wrote:
>> If you change the CHOST, CFLAGS and CXXFLAGS variables, then do:
>>    emerge -e system
>>    emerge -e world
>> you will have converted everything except your kernel to 64-bit.
>
> Clearly you are completely clueless. Do *NOT* do this. It will break your
> system. It is not possible to run any 64 bit code with a 32 bit kernel. There
> is a guide [1] you must follow very carefully if you ever need to change your
> CHOST between two x86 CHOSTs. Even that has potential to break your system if
> you are not careful. If you need to switch from an x86 CHOST to an x86_64 CHOST
> there is no sane method short of a reinstall.

Yup, this is why I will leave CHOST untouched for now.

Maybe I will give it a try on another hdd and try to do a fresh install
of x86_64 on that E2160, if the winter is long and boring ;-)

I also still don't think if running 64 Bit makes any sense at all when
it comes to running a mythtv-box ... it would *maybe* make some sense on
my workhorse, a E6600 with 4 gigs of RAM.

A minor q related to E2160:

Should I choose "Core2" in my kernel-configuration for that processor?
Where do I find out these things? In the kernel-sources?

I noticed along the way that I still have "Pentium 4" in there, due to
the fact of having migrated from a P4-board.

Thanks, Stefan
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