Expected location for dependency (csexp) for dune-configurator

[normbw]

Hi,

I attempted to build dune-configurator following #8508, and that errored with a message that library csexp could not be found. I grabbed the csexp source code and used dune to build and install it. When I again tried to build dune-configurator, I still got the message that csexp could not be found. My question is where (in what directory) should csexp be installed so that dune is able find it?

This is with ocaml 4.14.1, dune 3.13.1, and csexp 1.5.2. Ocaml and dune are installed into the /usr/local path (ocamlc and dune are in /usr/local/bin). Here are my steps starting from building csexp.

1. dune build -p csexp --display=verbose

This seemed to work (output below). Then install it:

2. sudo dune install csexp

Nope. The error message says that either --prefix or --mandir needs to be set.

3. sudo dune install csexp --prefix=/usr/local --display=verbose

The verbose output (also below) shows that the library is installed into /usr/local/lib/csexp. I then try to build dune-configurator again, and I still get the error about library csexp not being found. My understanding from here:

https://dune.readthedocs.io/en/latest/usage.html#finding-external-libraries

is that dune should be looking in /usr/local/lib. I expect I'm misunderstanding something, so any guidance would be appreciated.

Thanks,
Norm

Results from 1.

Shared cache: disabled
Shared cache location: /home/me/.cache/dune/db
Workspace root:
/home/me/mysrc/csexp-1.5.2
Auto-detected concurrency: 4
Dune context:
{ name = "default"
; kind = "default"
; profile = Release
; merlin = true
; fdo_target_exe = None
; build_dir = In_build_dir "default"
; installed_env =
map
{ "INSIDE_DUNE" :
"/home/me/mysrc/csexp-1.5.2/_build/default"
; "OCAML_COLOR" : "always"
; "OPAMCOLOR" : "always"
}
; instrument_with = []
}
Actual targets:

• recursive alias @install

Results from 3:

Installing /usr/local/lib/csexp/META
Installing /usr/local/lib/csexp/csexp.a
Installing /usr/local/lib/csexp/csexp.cma
Installing /usr/local/lib/csexp/csexp.cmi
Installing /usr/local/lib/csexp/csexp.cmt
Installing /usr/local/lib/csexp/csexp.cmti
Installing /usr/local/lib/csexp/csexp.cmx
Installing /usr/local/lib/csexp/csexp.cmxa
Installing /usr/local/lib/csexp/csexp.ml
Installing /usr/local/lib/csexp/csexp.mli
Installing /usr/local/lib/csexp/dune-package
Installing /usr/local/lib/csexp/opam
Installing /usr/local/lib/csexp/csexp.cmxs
Installing /usr/local/doc/csexp/CHANGES.md
Installing /usr/local/doc/csexp/LICENSE.md
Installing /usr/local/doc/csexp/README.md

[normbw]

Hi,

Perhaps let me distill this down and refine it a bit. How do I tell dune about the location of libraries, e.g., in /usr/local/lib/csexp in this case?

Thanks,
Norm