klibc - Jul 2010 - a list of which kernel versions work with klibc

Is there a list of which kernel versions (are supposed to) work with
(each version of) klibc?

I do recall reading something that said klibc should run under any
version of the kernel, regardless of which version it is compiled
against.  Following the new instructions on this list earlier (to use
the KLIBCKERNELSRC= parameter to point to the installed kernel
headers) as well as also making the symlink "linux" (pointing to same
header tree), I find that only more recent kernels work with klibc.

I am trying to determine just how far back in kernel versions I can
go, so I know what work I will have to do to bring some (older) kernel
patches to recent kernels.  Fortunately, early user space will let me
abandon a couple of those patches.  Klibc 1.5.{16,17,18} only compile
with kernels since 2.6.32.  But the real issue is actually running.
If Linux changed syscall interfaces such that these version
combinations won't even run under older kernels, then I need to either
bring all my kernel patches up to date sooner (where I had hoped to
spend the time either doing them over or finding a way to abandon
them), or try to figure out how to get Klibc to compile with an older
kernel (doesn't have to be the latest Klibc, but even older versions
of Klibc were running into "header hell" with older kernels).

Even a list of which versions of Linux were used with each version of
Klibc in the past might help.  I tried to use the kernel versions
dated just before each past Klibc release (of 1.5.X versions, only),
but those other various other errors.

----- "Phil Howard" <kunnskaperen at gmail.com> a ?crit :
> Is there a list of which kernel versions (are supposed to) work with
> (each version of) klibc?
> 
1.5.15 work with 2.6.27.x
http://ipcop.svn.sourceforge.net/viewvc/ipcop/ipcop/trunk/lfs/klibc?revision=3106&view=markup

we have used 1.5.10 with 2.6.25.x

Gilles

On Tue, Jul 20, 2010 at 8:55 AM, Gilles Espinasse <g.esp at free.fr>
wrote:
>
> ----- "Phil Howard" <kunnskaperen at gmail.com> a ?crit :
>
>> Is there a list of which kernel versions (are supposed to) work with
>> (each version of) klibc?
>>
> 1.5.15 work with 2.6.27.x
>
http://ipcop.svn.sourceforge.net/viewvc/ipcop/ipcop/trunk/lfs/klibc?revision=3106&view=markup
Then I guess I could focus on why that combination fails for me:

http://phil.ipal.org/linux-and-klibc/2010-07-21/klibc-linux-combo-log/000324-klibc-1.5.15-linux-2.6.27.48-i686.log
http://phil.ipal.org/linux-and-klibc/2010-07-21/klibc-linux-combo-log/000324-klibc-1.5.15-linux-2.6.27.48-x86_64.log

Here is the latest script.  It uses both the "linux" symlink (there is
an "ln" command seen in the logs making the symlink), and the
KLIBCKERNELSRC= parameter on the make command.  I hope I have them
pointing in the right place.  Some combinations (e.g. 1.5.16 through
1.5.18 with more recent kernels) do work, which suggests something is
right in my script.

In the above logs, it shows an error where "linux/limits.h" is now
found.  Yet there is "linux/limits.h" relative to the header install
target, as shown its md5 checksum before compilation was started.
Something went wrong somewhere.  Originally I posted to just see if
there was existing knowledge of such problems.  But if this pairing
works for you, that means at least something is different between how
you ran it, and how I did.  I ran it by that script.

The script is at:
http://phil.ipal.org/linux-and-klibc/2010-07-21/compile-klibc

> we have used 1.5.10 with 2.6.25.x
Results of that pairing will be in the same directory as the above
ones, later on.

Anyway, I guess it might be time for me to dig into the builds,
Makefiles, and source trees, to see what went wrong.