Re: poky-image-sato-sdk failed at do_rootfs

[Mark Hatle <mark.hatle@windriver.com>]

On 2/2/11 8:06 AM, Richard Purdie wrote:
> On Wed, 2011-02-02 at 07:56 -0600, Mark Hatle wrote:
>> On 2/2/11 5:33 AM, Wolfgang Denk wrote:
>>> Dear Richard Purdie,
>>>
>>> In message <1296645484.1544.2556.camel@rex> you wrote:
>>>>
>>>>>> Did you leave NO32LIBS set in local.conf as per the default?
>>>>>
>>>>> Good point - sorry, I had forgotten about that.  I always comment out
>>>>> NO32LIBS because when building the SDK I also need this for 32 bit
>>>>> machines.
>>>>
>>>> This option really just controls psuedo-native, it has no effect on the
>>>
>>> I see - that was not clear to me from the comment ("Default to not
>>> build 32 bit libs on 64 bit systems, comment this out if that is
>>> desired").
>>>
>>> When is this option needed, then?  If it was not needed (and is
>>> broken), should it eventually be removed?
>>
>> PSEUDO is similar to fakeroot, it is a LD_PRELOADed library that intercepts
>> certain calls, and emulates a root user capable environment.
>>
>> As such, it MUST be able to intercept both 32-bit and 64-bit function calls,
>> when both are available on a host.
>>
>> So if you have both 32-bit and 64-bit binaries installed on your host, you need
>> to disable the NO32LIBS, otherwise you could end up with an incomplete faked
>> root environment.
> 
> Since poky builds all its own tools out the box, this isn't something
> I've ever seen a user get bitten by so far. There are people using say
> an external 32 bit toolchain on a 64 bit machine who do need this
> functionality though.

The place where I've seen it (beyond the tools issue above), is when someone
provides their own version of a common tool, like ls, sed, make, etc..  usually
to work around a defect in the host system that for whatever reason they can not
fix by a distro vendor update..  (usually due to lack of permissions to root,
and a sysadmin who doesn't care about updates because they need their one true
standard environment...)  ;)

But ya, it used to be very common, but it's become more rare every day.  Usually
systems these days are either 32-bit or 64-bit...

--Mark

> Cheers,
> 
> Richard
>