[wg-camlp4] benchmarks

Anil Madhavapeddy anil at recoil.org
Mon Feb 11 14:30:35 GMT 2013

Fix the underlying problem.  There are several build system efforts ongoing
at the moment from various folk at JSC/Citrix/other, and we need to tackle
that problem head-on.

There'll be a wg-build mailing list next month, after some preparatory work
has been done by the people involved.  It's fairly off-topic for this list,
so I'll defer further discussion until then.


On 11 Feb 2013, at 12:20, Gabriel Scherer <gabriel.scherer at gmail.com> wrote:

> On the other hand, build systems come and go (and ./configure is like
> the most horrible part to add logic to in most cases), while ocamlfind
> has proved a reliable tool as a basis for any OCaml ecosystem so far.
> If I can shelve some logic there without making the tool more complex
> or less elegant I think that would be better for everyone.
> On Mon, Feb 11, 2013 at 11:56 AM, Anil Madhavapeddy <anil at recoil.org> wrote:
>> On 11 Feb 2013, at 10:45, Gabriel Scherer <gabriel.scherer at gmail.com> wrote:
>>> On Mon, Feb 11, 2013 at 11:31 AM, Anil Madhavapeddy <anil at recoil.org> wrote:
>>>> It should work just fine with ppx, and has the advantage of reducing the number of ocamlfind calls per-file (which is a considerable overhead on large projects, since it has to scan the META directories on every invocation).
>>> That's of course rather orthogonal to the present discussion, but have
>>> you been in contact with Gerd to see if some caching solution would be
>>> possible? Intuitively it feels like ocamlfind could easily maintain a
>>> cache in /var/run/blah and only clean it on install/remove commands.
>>> (An external process invocation would still make some overhead so in
>>> you're case you'd still have to go all the way, but that could improve
>>> the threshold at which such ~hacks become interesting.)
>> I don't think it's necessary to put this in ocamlfind, which does the job
>> it's designed to do very well. Just fix your build systems to run ocamlfind
>> at configure time, save the results, and apply them to the compiler flags
>> during the build phase.
>> -anil

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