[Fedora-livecd-list] Non-native architectures

[Jasper Hartline]

You are correct. Anaconda and Yum RPM post scripts operate in the fake
root environment.
%post section of kickstart file can be chrooted or not.. depending on
what you set.
I have built many LiveCDs for x86_64 before from an i386/i686 machine.
It comes down to some simple things, Anaconda/Yum will expand the variables
$basearch and $releasever depending on what the environment is set as,
if you're using a kickstart
file with repos using $basearch and $releasever, it will build a CD
for the architecture you are on.

To build for another platform just change those variables to be hard
coded values.
The only other way to have livecd-creator make a CD for a specific target is to
have it use a --target or --platform flags which can be passed on teh
command line.
Of course this functionality doesn't exist, nor do I know if it would
be preferrable to just
pulling things from teh kickstart file, which I doubt.


On Sat, May 29, 2010 at 12:20 PM, Mads Kiilerich <mads at kiilerich.com> wrote:
> Bruno Wolff III wrote, On 05/29/2010 06:16 PM:
>> On Sun, May 30, 2010 at 00:49:28 +0900,
>>    Misha Shnurapet<zayzayats at yandex.ru>  wrote:
>>
>>> Hello.
>>>
>>> Currently, running an x86_64 system I can also re-spin 32-bit versions
>>> by using "setarch i686" in the command line:
>>>
>>> su -c "setarch i686 livecd-creator
>>> --config=/usr/share/spin-kickstarts/fedora-livecd-desktop.ks"
>>>
>>> But it does not work other way around. For example,
>>>
>>> su -c "setarch x86_64 livecd-creator
>>> --config=/usr/share/spin-kickstarts/fedora-livecd-desktop.ks"
>>>
>>> gives an error. Same for another architecture. I think there's something
>>> wrong with this. Is it possible to create spins for other architectures?
>>> Can it be fixed?
>>>
>> Normally you need to use mock to do this. i686 on x86_64 probably works
>> because i686 code will run on an x86_64 machine.
>>
>
> Really?
>
> My answer would be that the pre and post scripts of the rpm packages
> executes binaries inside the chroot during installations, so CDs has to
> be created on a binary compatible platform. i686 on x64_64 is thus a
> special case.
>
> /Mads
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