From: David Allsopp <dra-news@metastack.com>
To: "moosotc@gmail.com" <moosotc@gmail.com>,
Gabriel Scherer <gabriel.scherer@gmail.com>
Cc: caml users <caml-list@inria.fr>
Subject: RE: [Caml-list] Interface(.mli) location
Date: Mon, 8 Aug 2016 18:30:03 +0000 [thread overview]
Message-ID: <E51C5B015DBD1348A1D85763337FB6D901350417AA@Remus.metastack.local> (raw)
In-Reply-To: <87y447npv3.fsf@gmail.com>
moosotc@gmail.com wrote:
> Gabriel Scherer <gabriel.scherer@gmail.com> writes:
>
> > It is correct that ocamldep assumes that the .ml and .mli of a given
> > module are at the same place, but this is not the case for the rest of
> > the compilation chain, which is either concerned with single source
> > files (a .ml file or a .mli file) or with "compilation units" (a .cmo
> > and .cmi files passed together, independently of where their source
> > files were). In particular, all type-checking tools do look in -I
> > directories to find .cmi files for the dependencies of the module
> > being compiled (and at this stage they do not care for .mli files).
>
> But the script seems to (somewhat) contradict this, i.e. after `ocamlc -I
> d -c a.ml' ocamlc ignores the presence of .mli inside subdirectory d/,
> producing both .cmi/.cmo when when compiling a.ml.
The -I option specifies extra directories for compiled files only, so it's correct that the compiler ignores d/a.mli.
Gerd is right that it's not so great that the compiler ignores d/a.cmi and still generates the automatic a.cmi (though I'm not convinced it's an error, personally). The automatic .cmi files are a pain in other areas (it's a nuisance in build systems, as it makes parallelisation harder). I'd have preferred to have something like ocamlc -ci a.ml being roughly equivalent to:
$ ocamlc -i a.ml > a.mli
$ ocamlc -c a.mli
$ rm a.mli
and the "gotcha" of forgetting to run ocamlc -ci a.ml being the first lesson in always producing .mli files, but it's a bit late for changes that :o)
David
next prev parent reply other threads:[~2016-08-08 18:30 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-08 16:09 moosotc
2016-08-08 17:03 ` Gabriel Scherer
2016-08-08 17:12 ` Gerd Stolpmann
2016-08-08 17:16 ` moosotc
2016-08-08 18:30 ` David Allsopp [this message]
2016-08-08 18:57 ` moosotc
2016-08-08 19:39 ` David Allsopp
2016-08-08 19:59 ` moosotc
2016-08-08 22:54 ` David Allsopp
2016-08-09 8:45 ` SF Markus Elfring
2016-08-09 16:26 ` David Allsopp
2016-08-09 17:55 ` SF Markus Elfring
2016-08-09 10:56 ` moosotc
2016-08-09 11:43 ` moosotc
2016-08-09 11:46 ` moosotc
2016-08-09 18:08 ` David Allsopp
2016-08-09 18:35 ` moosotc
2016-08-09 18:59 ` David Allsopp
2016-08-09 19:55 ` moosotc
2016-08-10 8:20 ` David Allsopp
2016-08-10 10:38 ` moosotc
2016-08-09 18:33 ` David Allsopp
2016-08-09 18:38 ` moosotc
2016-08-09 19:02 ` David Allsopp
2016-08-09 9:22 ` SF Markus Elfring
2016-08-09 16:32 ` David Allsopp
2016-08-09 18:10 ` SF Markus Elfring
2016-08-09 18:26 ` David Allsopp
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