how to build i386 rpms on x86_64

[Michael A. Peters]

On Wed, 2005-06-22 at 09:52 -0400, Jack Howarth wrote:
>      Is there a clear procedure to be able to build i386 versions of
> rpms on a Fedora Core 4 x86_64 installation? There are a few packages
> like gromacs with i386 assembly optimizations which don't exist when
> built as x86_64. I tried using...
> 
> linux32 rpmbuild -ba gromacs.spec
> 
> ...but it seems that the required i386 parts of the gcc compiler are
> not installed. In particular, I am concerned about how destabilized
> my build system will become if I attempt to configure the machine to
> build both architectures. Thanks in advance for any information.
>            Jack
> 

I don't know for sure - but try

rpmbuild -ba foobar.spec --target="i386"