RE: [Caml-list] Filename.temp_dir_name

[David Allsopp <dra-news@metastack.com>]

Sébastien Hinderer wrote:
> David Allsopp (2014/10/23 12:50 +0000):

<snip>

> Thanks for the pointers. I had a look to the different projects you
> mentionned but so far I couldn't find where in the sources the
> compatibility layer was defined / generated.
> 
> I mean, I understand the principle of what you explain but I'd be happy to
> see a concrete example illustrating how the buildsystem generates the
> appropriate files depending on the compiler version.
> 
> Would it be possible for you to show me more precisely where this is done,
> plese?

In batteries[1], see src/batUnix.mliv type [open_flag] which has lines prefixed ##. There is the program build/prefilter.ml and then a suffix rule (search for .mliv.mli) in Makefile which generates batUnix.mli.

In findlib[2], see configure (search for "# bytes?"). It detects whether bytes.cmi exists in the compiler's lib directory (`ocamlc -where`/bytes.cmi). Based on that it therefore determines whether it will generate a dummy META file from the files site-lib-src/bytes or whether it will compile its compatibility library in src/bytes.


David

[1] http://forge.ocamlcore.org/frs/?group_id=17
[2] http://download.camlcity.org/download/findlib-1.5.5.tar.gz