Re: Can a kernel rpm be built for i686 on x86_64?

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On Fri, 6 Nov 2009, Alan Cox wrote:

On Fri, 6 Nov 2009 03:15:59 -0700 (MST)
"William F. Acker WB2FLW +1 303 722 7209" <wacker@xxxxxxxxxxxxx> wrote:

Hi all,

      Years ago, I successfully built an i686 kernel using a machine running
the x86_64 distro.  The kernel seemed to run fine.  The only trouble I
found was when I tried to build an external module, the build failed.  It
turned out that the kernel-devel package had a binary called genksyms.
That was still being built as an elf64 binary.  I can no longer find that
binary, so I believe it's now OK to build all my packages for i686 and
x86_64 at once on an x86_64 machine.  Is this recommended?  If not, why
not?

It should work fine. It does with the base kernel from kernel.org and I
do this all the time.



Unfortunately, the problem is still there. Here is a grep for 'ELF 64' from the output of the file command run over the installed list of files from kernel-devel built on an x86_64 system, running on an i686 system.
/usr/src/kernels/2.6.30.9-96.spk.fc11.i686.PAE/scripts/basic/docproc:                                 ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not stripped
/usr/src/kernels/2.6.30.9-96.spk.fc11.i686.PAE/scripts/basic/fixdep:                                  ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not stripped
/usr/src/kernels/2.6.30.9-96.spk.fc11.i686.PAE/scripts/basic/hash:                                    ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not stripped
/usr/src/kernels/2.6.30.9-96.spk.fc11.i686.PAE/scripts/conmakehash:                                   ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not stripped
/usr/src/kernels/2.6.30.9-96.spk.fc11.i686.PAE/scripts/kallsyms:                                      ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not stripped
/usr/src/kernels/2.6.30.9-96.spk.fc11.i686.PAE/scripts/kconfig/conf:                                  ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not stripped
/usr/src/kernels/2.6.30.9-96.spk.fc11.i686.PAE/scripts/mod/mk_elfconfig:                              ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not stripped
/usr/src/kernels/2.6.30.9-96.spk.fc11.i686.PAE/scripts/mod/modpost:                                   ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not stripped
/usr/src/kernels/2.6.30.9-96.spk.fc11.i686.PAE/scripts/pnmtologo:                                     ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not stripped
/usr/src/kernels/2.6.30.9-96.spk.fc11.i686.PAE/scripts/selinux/mdp/mdp:                               ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not stripped
/usr/src/kernels/2.6.30.9-96.spk.fc11.i686.PAE/scripts/unifdef:                                       ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not stripped

It's too bad. That would have simplified the build pross considerably.

--
          Bill in Denver

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