"multiarch conflicts in ..." bugs

[Richard W.M. Jones]

Patrice Dumas wrote:
> On Tue, Oct 23, 2007 at 10:12:56AM +0100, Richard W.M. Jones wrote:
>> I've had the following bug filed at the end of last week:
>>
>> https://bugzilla.redhat.com/show_bug.cgi?id=342721
>>
>> and I've read:
>>
>> http://fedoraproject.org/wiki/PackagingDrafts/MultilibTricks
>>
>> but I've still no idea what I need to do to fix the bug.  Can someone 
>> explain it in simpler terms?
> 
> Looks like there is a bug somewhere since some files look like ELF
> files like /usr/bin/camlp4oof.opt? An ocaml weirdness or a bug in rpm?

OK, I think I get it now.

All the *.opt files are native ELF binaries.  They're compiled by the 
OCaml compiler (it does its own code generation) and linked by ld, or 
rather by gcc used as a wrapper around ld.

$ file usr/bin/camlp4oof.opt
usr/bin/camlp4oof.opt: ELF 64-bit LSB executable, x86-64, version 1 
(SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.9, stripped

> The ocamlrun scripts also look like binary (arch dependent?) stuff
> so it is a logical that there is conflict. It certainly requires
> something to be done at the rpm level, but I am far from being an expert
> on those issues.

The files which begin with #!/usr/bin/ocamlrun are bytecode files.  Even 
though it's called "bytecode" it isn't portable between architectures. 
It's not like Java bytecode.  So consider these to be like binaries too.

Rich.

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