js file in META? about eliom HOT 5 CLOSED

@gerdstolpmann may have suggestions on this.

from eliom.

The js file should not go into archive - which is reserved for files that are really passed to ocamlc/ocamlopt. You could e.g. use

archive(byte,javascript) = "library_jsofocaml.cma"

to select a special version of a library that is prepared for jsofocaml (say, if you have a library that should work for both the standard runtime and for javascript, and you need different ocaml code depending on the runtime).

I think linkopts looks like the right choice for this. linkopts is nowadays rarely used, but initially this META variable contained additionally parameters for the linker. And this is what you are doing here - you have a special form of linking where extra js file need to be loaded. What I'm suggesting is: Put this into META:

linkopts(javascript) = "library.js"

and use this type of query to get all js files for some packages:

ocamlfind query -o-format -r -predicates "javascript" eliom.client

Note that we use here only "javascript" and not "byte,javascript" as predicates so the standard linker is unaffected by this.

from eliom.

I've been trying the following (in js_of_ocaml META file)

linkopts(javascript) = "runtime.js"
linkopts(javascript,pkg_unix) += "unix.js"

I was expected the command:

ocamlfind query -o-format -r -predicates "javascript" js_of_ocaml unix

to output unix.js as well. It doesn't .

I may have misunderstund the doc (http://projects.camlcity.org/projects/dl/findlib-1.4/doc/ref-html/r681.html).
I was expecting pkg_unix to be true.

Is it possible to get this behavior ?

from eliom.

Hmmm, ocamlfind query doesn't do this. This is probably just an oversight, as the other subcommands like ocamlc actually set the pkg_* predicates automatically.

I could add this to the next version of ocamlfind. Ok?

from eliom.

Ok. meanwhile, one can set pkg_* predicates manually
ocamlfind query -r -format "pkg_%p" eliom.client

from eliom.