Use for questions relating to dune, previously jbuilder, a build system for [ocaml] and [reason]
Dune is a build system for ocaml and reason.
Questions tagged [ocaml-dune]
96 questions
9
votes
1 answer
How to have nested libraries? Confused about dune etc
I have an OCaml project using dune
Following advice in basic tutorials I have a dir structure like:
bin/
cli.ml
dune
lib/
dune
...
.ml
The number of files in my lib dir is growing and I would like to have another level…
Anentropic
- 32,188
- 12
- 99
- 147
6
votes
1 answer
How to disable Error (warning 66): unused open! in dune
As per https://github.com/ocaml/ocaml/pull/1110, OCaml 4.08 and later raises a warning for unused module opens, even when they are opened with open!. This creates friction with the common practice of using open! Foo to establish that the following…
Shon
- 3,989
- 1
- 22
- 35
6
votes
1 answer
Running OUnit tests using dune
I'm having difficulties running OUnit tests, mostly because I'm new to both dune and OUnit. dune complains when I run dune runtest:
File "test/dune", line 4, characters 13-14:
Error: Library "f" not found.
Hint: try: dune external-lib-deps --missing…
Flux
- 9,805
- 5
- 46
- 92
5
votes
2 answers
Copy the produced executable in my root dir with dune
Let's say I have a simple project with the following structure:
.
├── dune-project
└── src
└── bin
├── dune
└── main.ml
dune-project
(lang dune 2.7)
(name myproject)
(package
(name myproject)
(synopsis "myproject")
(description "Basic…
Lhooq
- 4,281
- 1
- 18
- 37
5
votes
1 answer
Is there a way to declare executables with hyphens in a OCaml dune?
I'm setting up a demo project using dune, and want to name the executable "hello-world.exe" instead of "hello_world". If I try to build the project I get an compiler error. How can I declare an executable with hyphens in the filename?
I'm using dune…
Niko W.
- 51
- 1
5
votes
0 answers
requiring "core" in utop gives error: Unix.Unix_error (Unix.ENOENT, "sysconf", "")
When I try to call #require "core" in utop, I get an error:
utop # #require "core";;
Exception: Unix.Unix_error (Unix.ENOENT, "sysconf", "").
Raised by primitive operation at unknown location
Called from file "toplevel/topdirs.ml", line 144,…
illabout
- 3,517
- 1
- 18
- 39
4
votes
1 answer
How to specify requirements for versions of dependencies for ocaml dune projects?
Say I run dune init proj hello_world, then modify the bin/dune and bin/main.ml files so that a new dependency foobar is in use.
The bin/dune file now:
(executable
(public_name hello_world)
(name main)
(libraries hello_world foobar))
1. How can I…
Costava
- 175
- 9
4
votes
2 answers
Debugging with dune
I know of the OCaml debugging tool (first compile with ocamlc -g , then run ocamldebug
Quantifier
- 135
- 1
- 8
4
votes
1 answer
How to link with a local ocaml library using dune
I took over an ocaml project that consists of a main program and a library, but the library is built indepenently. Linking the main program was up until now possible with "ocamlopt -I mylib.cmxa myprogram.ml" - but I had problems using opam…
Marius Melzer
- 863
- 1
- 7
- 10
4
votes
1 answer
unbound module in OCaml / dune build
I trying out OCaml for the first time and trying to build a couple files together.
When I run:
dune build bin/main.exe
I am getting:
ocamlc bin/.main.eobjs/main.{cmi,cmo,cmt} (exit 2)
(cd _build/default && /usr/bin/ocamlc.opt -w…
Alexander Mills
- 90,741
- 139
- 482
- 817
4
votes
1 answer
how to derive to_string methods for data types using ppx
How can I derive to_string methods for data types using ppx with jbuilder?
For instance, I'm trying to use @@deriving show to derive show_* methods for a data type. I have a simple main.ml file that looks like this:
open Core
type foo = Bar | Baz
…
illabout
- 3,517
- 1
- 18
- 39
3
votes
0 answers
OCAML MLI + ML files and multiple implementations
I wrote a interface for a map data structure in an MLI file and then the implementation of maps using association lists in a file of the same name but with extension of "ML". this works. but now I want to write a second implementation of the map…
Knows Not Much
- 30,395
- 60
- 197
- 373
3
votes
1 answer
How to use Flambda with dune in ocaml?
I'm doing a project in which I need to optimize my code as much as I can because it takes hours to run with a normal compilation.
I was told to use Flambda, but I didn't find anything on the internet on how to use it with dune.
I'd appreciate…
Butanium
- 726
- 5
- 19
3
votes
2 answers
How to include a local library to an executable with dune ocaml
I have a project structured like this :
root/
|—— dune-project
|—— lib/
| |—— dune
| |—— Readertsp.ml
| |-- ...
|
|—— bin/
| |—— dune
| |—— bin.ml
bin.ml :
let city_config = "ch130" in
let path = Readertsp.open_path city_config in…
Butanium
- 726
- 5
- 19
3
votes
1 answer
OCaml dune: get absolute path to source directory
I have a project and there is a ./tests directory at its root containing several hundred MB of data that is used by the tests of several…
josch
- 6,716
- 3
- 41
- 49