Re: [Caml-list] Re: oasis

[Anastasia Gornostaeva <ermine@ermine.pp.ru>]

On Sun, Nov 28, 2010 at 05:17:35PM +0000, Sylvain Le Gall wrote:

> My current state about this solution is:
> - defines BuildDepends: freetype2 (pkg-config), to make clear that there
>   is a C build-depends
> - allow to override the defined variable freetype2_cflags and
>   freetype2_libs. If they are both defined by user, don't even call
>   pkg-config for this package

There should be three variants: pkg-config, OS-based userspace policy 
(/usr/include vs. /usr/local/include) and user-defined one.

> Here is a new proposal about this:
> - use a PostConfigureCommand to invoke a shell script freetype2.sh
> - in freetype2.sh invoke freetype-config and output flags in setup.data
>   using "echo 'freetype2_cflags = "$output"' >> setup.data' and
>   "echo 'freetype2_libs = "$output"' >> setup.data' 
> - add in _tags a "src/toto.cma: pkg_config_freetype2" 
> - add in myocamlbuild.ml a "tag [pkg_config_freetyp2; compile; ocaml] &
>   [... (* load the content of freetyp2_cflags *) ... ]"
> 
> This is not simple but this is probably what I will do for the support
> of C libraries in 0.3.0.

But it is the best solution now and partially works for me.
And please make the functions that loads setup.data and var_get data from it 
to be public. Right now I attempt to play with your code in myocamlbuild.ml 
and re-use it in my piece at bottom of the file.
I'm always ready to test/use oasis from darcs when you put there something new.

ermine

> 
> Regards,
> Sylvain Le Gall
> 
> _______________________________________________
> Caml-list mailing list. Subscription management:
> http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list
> Archives: http://caml.inria.fr
> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
> Bug reports: http://caml.inria.fr/bin/caml-bugs