Re: linux-libc-headers version (reloaded)

[Steffen Sledz <sledz@dresearch.de>]

Am 15.02.2011 15:50, schrieb Steffen Sledz:
> Am 15.02.2011 15:12, schrieb Andreas Oberritter:
>> On 02/15/2011 11:41 AM, Steffen Sledz wrote:
>>> "Kernel headers are backwards compatible, but not forwards compatible.  This
>>> means that a program built against a C library using older kernel headers
>>> should run on a newer kernel (although it may not have access to new
>>> features), but a program built against newer kernel headers may not work on an
>>> older kernel."[2]
>>
>> Isn't this what the variable OLDEST_KERNEL is good for, when compiling
>> glibc?
> 
> If i'm right this goes to the --enable-kernel=VERSION configure option of glibc just to optimize the library.
> 
> "the configure option --enable-kernel=X.Y.Z allows to strip out compatibility for kernel versions before X.Y.Z."
> 
> Imho it is not legitimately to follow that glibc has compatibility code for all kernels greater or equal X.Y.Z.
> 
> Another question is the handling in other libc implementations.
> 
> And finally there are a lot of programs using userland kernel headers directly.

Ping!

If i interpret responses from Tom and Phil right they agree with me (or at least do not disagree). ;-)

But i miss reactions from the distro maintainers (especially Ångström).

Regards,
Steffen

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