New vs Old Kernel Headers

[Mike Frysinger]

On Friday 30 May 2008, Marco wrote:
> I have a question maybe someone can shed some light on.  If I build a
> cross toolchain, built with the latest gcc/glibc/kernel headers(lets say
> 2.6.24).  If the target platform uses a much older kernel (lets say
> 2.6.1 ), I'm under the impression that all the software built for the
> target should be using the kernel headers for 2.6.1.  Which means
> special care is needed not to include the 2.6.24 headers from the
> toolchain.

it depends on the libc.  if you're using glibc, then glibc comes with a 
configure option where you tell it the oldest kernel version it can run on 
(see the --enable-kernel configure option).  that way you can compile against 
the very latest headers (2.6.25) while still having the C library work on 
older versions (whatever given to --enable-kernel).
-mike
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 827 bytes
Desc: This is a digitally signed message part.
URL: <http://sourceware.org/pipermail/crossgcc/attachments/20080530/f9ada1b0/attachment.sig>