CODEWITHSUNDEEP
makefileocamlmenhirocaml-dune
SoftTimur
SoftTimur

Reputation: 5490

Add a module by makefile or manually

I have a big project built with traditional makefile. I would like to add a mechanism of error handling like this project to my project.

In the sample project, a module UnitActionsParser is generated by the following rules of dune:

;; The following two rules create a copy of the file parser.mly named
;; unitActionsParser.mly. This is a copy of the grammar where the semantic
;; actions have been removed and replaced with unit values. It is compiled
;; by Menhir's table back-end to obtain the module UnitActionsParser.

;; The use of [--external-tokens Parser] is required for the two parsers
;; to share a single [token] type. This makes them usable with the same
;; lexer.

(rule
  (action
    (with-stdout-to unitActionsParser.mly
      (run menhir
        %{dep:parser.mly}
        --only-preprocess-u
))))

(menhir
  (modules unitActionsParser)
  (flags --table --external-tokens Parser)
)

At the moment, the makefile of my project contains like:

OCAMLYACC=      $(OCAMLPREFIX)menhir -v

%.ml %.mli: %.mly
    $(OCAMLYACC) $*.mly

So now, I'm wondering how to build such a UnitActionsParser module. The best would be to modify my makefile, does anyone know how to do that? Otherwise, we could also add it manually in the first place. I tried in the command line $ menhir --table --external-tokens Parser, but it returned me Usage: menhir <options> <filenames>. Could anyone help?

Upvotes: 1

Views: 246

Answers (1)

octachron
octachron

Reputation: 18902

You can add the rule directly to your Makefile. The direct translation of the dune file would be

unitActionsParser.mly: parser.mly
    $(OCAMLYACC) --only-preprocess-u $< > $@

Upvotes: 2

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