CentOS - Mar 2011 - 32-bit compat-gcc on 64-bit CentOS?

Ugh.

One of our internal servers crashed so bad I just went out and bought a
new machine to replace it.

The old server was Pentium-4 based and running CentOS-5. When I
installed CentOS on the new machine, I used the 64-bit version, partly
because that habit is almost automatic nowadays, and partly because the
new machine has 6GB of RAM, so 32-bit seemed not very appropriate.

Anyway, I've managed to configure every one of the old server's many
functions to match on the new server but one: I need the 32-bit version
of compat-gcc-34. (Or at least I need to be able to compile 32-bit
binaries with the already available version.) I can't seem to do this;
am I just missing something?

In retrospect, installing the 64-bit OS may have been foolish. But it's
too late now. I've spent several days installing/loading/configuring
this system to the point it's at now. It would be a pity to have to
start over completely just to enable this one (very critical) function.

-Alan

On Tue, Mar 29, 2011 at 5:35 PM, Alan M. Evans <ame1 at extratech.com>
wrote:
> Ugh.
>
> One of our internal servers crashed so bad I just went out and bought a
> new machine to replace it.
>
> The old server was Pentium-4 based and running CentOS-5. When I
> installed CentOS on the new machine, I used the 64-bit version, partly
> because that habit is almost automatic nowadays, and partly because the
> new machine has 6GB of RAM, so 32-bit seemed not very appropriate.
>
> Anyway, I've managed to configure every one of the old server's
many
> functions to match on the new server but one: I need the 32-bit version
> of compat-gcc-34. (Or at least I need to be able to compile 32-bit
> binaries with the already available version.) I can't seem to do this;
> am I just missing something?
>
> In retrospect, installing the 64-bit OS may have been foolish. But it's
> too late now. I've spent several days installing/loading/configuring
> this system to the point it's at now. It would be a pity to have to
> start over completely just to enable this one (very critical) function.
>
> -Alan
You do not provide a lot of detail on what the actual problem is, but
have  you tried the -m32 flag with gcc. that will tell it to create
32-bit code. You will also need to pass that option to the linker and
be sure any dependent libraries have the 32 bit versions installed.

--
Jeff

On Tue, Mar 29, 2011 at 6:35 PM, Alan M. Evans <ame1 at extratech.com>
wrote:
> Ugh.
>
> One of our internal servers crashed so bad I just went out and bought a
> new machine to replace it.
>
> The old server was Pentium-4 based and running CentOS-5. When I
> installed CentOS on the new machine, I used the 64-bit version, partly
> because that habit is almost automatic nowadays, and partly because the
> new machine has 6GB of RAM, so 32-bit seemed not very appropriate.
>
> Anyway, I've managed to configure every one of the old server's
many
> functions to match on the new server but one: I need the 32-bit version
> of compat-gcc-34. (Or at least I need to be able to compile 32-bit
> binaries with the already available version.) I can't seem to do this;
> am I just missing something?
Perhaps you can use "mock" to build chroot cages for such 32-bit
operations?