[oe] linux-libc-headers version (reloaded)

[Tom Rini]

On 02/15/2011 07:12 AM, Andreas Oberritter wrote:
> 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?

Right.  But other things can start to rely on the kernel interfaces 
(where it's allowed to) as well, and often don't do the various hoops to 
be forwards compatible at run time.

-- 
Tom Rini
Mentor Graphics Corporation