[WBEL-users] Anyone know about 64-bit build hosts?

[Johnny Hughes]

Vic wrote:
> Hi All.
> 
> I hope someone can point out my glaring mistake(s) here...
> 
> Now that the last[1] 64-bit package has finished building[2], I want to
> integrate my build environments - at present, I've got a 32-bit
> installation and a 64-bit installation, and I choose the appropriate one
> at boot time.
> 
> What I want to do is to be able to build the 32-bit packages in the 64-bit
> install. Which should be easy - but I can't get the hang of it.
> 
> I've tried "setarch i386" on the command line. I've tried "--target=i386".
> I've added %_arch, %_target, and %_target_cpu to my rpmmacros. Still my
> test build is trying to link to a 64-bit output file[3] :-(
> 
> Anyone know what incredibly obvious thing I've forgotten?
> 
> Everything Google finds for me tells me to use mock - but as I'm
> bootstrapping the distribution, I don't think that will work. It'll also
> be *incredibly* slow...
> 
> Thanks!
> 
> Vic.
> 
> [1] Well, except for openCryptoki, which really doesn't want to build -
> and I'm not suifficiently interested in it to spend much more time on it.
> 
> [2] openoffice only takes 10 hours to build on my new box. And it only
> failed 3 times. Grrr.
> 
> [3] Specifically, I get warnings from ld saying stuff like "i386
> architecture of input file `.libs/xa_map.o' is incompatible with
> i386:x86-64 output"

Vic,

Your best bet is to use mock on x86_64 to build i386 packages.

Fedora uses mock to build all their packages and RHEL uses something 
similar (brewbuild).  CentOS builds all CentOS-4 and CentOS-5 packages 
in mock, and Scientific Linux also uses mock.

When you build x86_64 packages, you need to do so in a clean buildroot 
with only x86_64 packages (and glibc.i686 or glibc-devel.i386 if 
required for a couple packages).

Mock allows you to do both (a clean buildroot for all packages and i386 
buildroots on x86_64 machines).

Thanks,
Johnny Hughes
CentOS Developer

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