Re: [Caml-list] Filename.temp_dir_name

[Gabriel Scherer <gabriel.scherer@gmail.com>]

There is the cppo tool of Martin Jambon which is a "serious"
preprocessor for OCaml -- by opposition to prefilter.ml which started
as a sed script and is growing in uncontrolled (but rather reasonable)
ways.
  http://mjambon.com/cppo.html

On Wed, Oct 29, 2014 at 4:29 PM, Sébastien Hinderer
<Sebastien.Hinderer@ens-lyon.org> wrote:
> Dear David,
>
> Many thanks for your prompt and helpful response.
>
>> 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.
>
> Ah yes, seen, thanks. So this is a line-based approach actually.
> I'm wondering whether code has already been written implement a
> block-based approach, i.e. an aproach where one can make several lines
> compiler-version dependent at once?
>
>> 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.
>
> Seen also, thanks.
>
> I guess it would also be okay,in a tool, to use that same test and to
> just rpovide the bytes module if it does not exist, rather than
> installing a package...
>
> Thanks!
> Sébastien.
>
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