I have this in my OMake files:

if $(test -e .git)

GIT_COMMIT = 'Some "$(shell git rev-parse HEAD)"'

export

else

GIT_COMMIT = 'None'

export

I also define VERSION manually, but ideally I should extract the version from my opam file.

Given those, I use m4 as follows to generate an About module for most of my projects.

m4 -D VERSION=$(VERSION) -D GIT_COMMIT=$(GIT_COMMIT) about.ml.m4 > about.ml

$ cat about.ml.m4

(** General information about this project. *)

(** Version: [VERSION] *)

let version = "VERSION"

(** Git commit if known: [GIT_COMMIT] *)

let git_commit = GIT_COMMIT

On Sat, Oct 17, 2015 at 3:22 AM, Gabriel Scherer <gabriel.scherer@gmail.com> wrote:

For reference, an ocamlbuild version would look like this:

open Ocamlbuild_plugin

let () = dispatch (function
| After_rules ->
rule "version file"
~prod:"version.ml"
~doc:"generate a file with version information:
Version.commit is the HEAD commit at the time of building,
Version.tag is the name of the last git tag"
(fun _env _build ->
let trim = "tr -d '\r\n'" in
let commit = run_and_read ("git rev-parse HEAD |" ^ trim) in
let tag = run_and_read ("git describe --abbrev=0 --tags |" ^ trim) in
let code = Printf.sprintf
"let commit = %S\n\
let tag = %S\n"
commit tag in
Echo ([code], "version.ml");
)
| _ -> ()
);;

On Fri, Oct 16, 2015 at 9:29 PM, Basile Starynkevitch
<basile@starynkevitch.net> wrote:
> On 10/16/2015 08:24 PM, David CHEMOUIL wrote:
>>
>> Hi,
>>
>> I am looking for a self-contained, to the point, documentation or tutorial
>> detailing steps, or even commands and scripts to run in order to release and
>> publish an OCaml-programmed piece of software.
>
>
>>
>> So common tasks we'd like to automate are quite simple: adding the commit
>> number and/or a build number in the OCaml source code (e.g. to display it
>> when running the program),
>
>
> This is not specific to Ocaml. It is a matter of build process.
>
> Assuming a Linux system, you might have some rule in your Makefile similar
> to the (untested) one below:
>
> ML_SOURCES=$(wildcard [a-z]*.ml)
> ML_INTERFACES=$(wildcard [a-z]*.mli)
> MD5SUM= md5sum
>
> _timestamp.ml:
> date +'let my_timestamp="%c";;' > _timestamp.tmp
>
> (echo -n 'let my_lastgitcommit ="' ; \
> git log --format=oneline --abbrev=12 --abbrev-commit -q \
> | head -1 | tr -d '\n\r\f\"' ; \
> echo '";;') >> _timestamp.tmp
> (echo -n 'let my_checksum ="'; cat $(sort $(ML_SOURCES)) $(sort
> $(ML_INTERFACES))| $(MD5SUM) | cut -d' ' -f1 | tr -d '\n\r\f\"\\' ; echo
> '";') >> _timestamp.tmp
> mv _timestamp.tmp _timestamp.ml
>
> Cheers
>
> --
> Basile STARYNKEVITCH http://starynkevitch.net/Basile/
> email: basile<at>starynkevitch<dot>net mobile: +33 6 8501 2359
> 8, rue de la Faiencerie, 92340 Bourg La Reine, France
> *** opinions {are only mine, sont seulement les miennes} ***
>
>
>
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