OCaml and static linking (was old thread: Re: [Fedora-packaging] Issues with Ocaml and Static Linking)

[Toshio Kuratomi]

On Sat, 2007-06-02 at 15:21 +0100, Richard W.M. Jones wrote:
> Toshio Kuratomi wrote:
> > If you,  Gérard, Hans, and the other people working on OCaml think the
> > guidelines are ready we can discuss and vote to include them at next
> > week's packaging meeting.  The committee is meeting at Tuesday at 17:00
> > UTC for about an hour in #fedora-meeting on freenode IRC.
> 
> It's in my diary.
> 
> >> (3) OCaml contains a native code compiler, but that compiler hasn't been 
> >> ported to all architectures that Fedora supports.  It has a bytecode 
> >> compiler which works everywhere (but is interpreted and hence slow).  I 
> >> haven't been very careful about detecting if native code is supported on 
> >> the current architecture.
> >>
> >>    --> ExcludeArch and/or lots of nasty %ifarch sections in %files.
> >>
> >>    --> I don't have a non-native arch to test on.
> >>
> > What's missing?  ppc64?  Is there a possibility of support being added
> > upstream?  I can't think of any other packages/languages that have this
> > problem offhand.  We may need to do something nasty with subpackages and
> > %ifarch but I'd rather avoid that if possible.  I don't know how
> > possible that is, though.
> 
> I ended up copying the solution that Debian use -- when building detect 
> if ocamlopt (the native code compiler) is available.
> 
> http://fedoraproject.org/wiki/PackagingDrafts/OCaml?action=show#head-14a9d22bff07b51f58d01bb4e79bcbe98e426a7c
> 
> I built four packages this way, testing on a "simulated" bytecode-only 
> architecture.
> 
Looks good.  What are the caveats to doing things this way for the %
files section?  I imagine as long as wildcards are used it will work but
we might want to have an example with a comment saying that the wildcard
makes it work on both native and non-native archs.

-Toshio
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