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Subject: Re: [PATCH] angstrom-2008.1: use linux-libc-headers 2.6.24 for hipox machine
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Am 07.05.2010 09:23, wrote Koen Kooi:
>>>>  #This is unrelated to the kernel version, but userspace apps (e.g. HAL) require a recent version to build against
>>>> -PREFERRED_VERSION_linux-libc-headers 	= "2.6.31"
>>>> +PREFERRED_VERSION_linux-libc-headers       ?= "2.6.31"
>>>> +PREFERRED_VERSION_linux-libc-headers_hipox ?= "2.6.24"
>>>
>>> NACK, that creates undefined behaviour for multimachine builds.
> 
>> -PREFERRED_VERSION_linux-libc-headers 	= "2.6.31"
>> +PREFERRED_VERSION_linux-libc-headers       = "2.6.31"
>> +PREFERRED_VERSION_linux-libc-headers_hipox = "2.6.24"
> 
>> Is this better?
> 
> No, it still changes the headers for one machine, which leads to
> undefined behaviour for other machines using the same arch.
> Any solution that doesn't mark *all* packages as machine specific for
> hipox is going to cause that behaviour.

Hmmmm? So what is the right method to change the header version
for a machine which needs a specific kernel version? Something like
PREFERRED_VERSION_linux-libc-headers in machine config?

Evidently glibc does not fall back gracefully on missing syscalls.

Regards,
Steffen