[Caml-list] ocamlbuild plugins and external libraries

[Caml-list] ocamlbuild plugins and external libraries

[Gregory Malecha]

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Hello --

I have several ocamlbuild plugins that are very similar and I'm trying to
figure out how to refactor them. I pulled out a bunch of definitions into
another file (coq_paths.ml) and then said 'open Coq_paths' in '
myocamlbuild.ml'. But when I do this, ocamlbuild can no longer build the
plugin, not even if foo.cmo already exists in the _build directory.

After hacking on this for a long time (and digging through the ocamlbuild
sources) I found that you can write a Makefile that will build
myocamlbuild.cmo using ocamlbuild without a plugin, and then manually link
this against ocamlbuild.cmo and to produce a custom version of ocamlbuild
that uses the plugin (this is exactly what ocamlbuild does). My question
is: 'is there any nicer way to do this?' I'm including my Makefile below:

OCAMLBUILDDIR=$(shell ocamlfind query ocamlbuild)

all: _build/coq_builder
        @ ./_build/coq_builder -no-plugin coq.otarget

_build/coq_builder: myocamlbuild.ml coq_paths.ml
        @ echo "building builder...."
        @ ocamlbuild -cflags -I,`ocamlfind query ocamlbuild` -no-plugin
myocamlbuild.cmo
        @ ocamlc.opt unix.cma -I $(OCAMLBUILDDIR)
$(OCAMLBUILDDIR)/ocamlbuildlib.cma \
           _build/coq_paths.cmo _build/myocamlbuild.cmo \
           $(OCAMLBUILDDIR)/ocamlbuild.cmo -o _build/coq_builder
        @ echo "done"

clean:
        ocamlbuild -clean

Thanks in advance.

-- 
gregory malecha
http://www.people.fas.harvard.edu/~gmalecha/

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Re: [Caml-list] ocamlbuild plugins and external libraries

[Gabriel Scherer]

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Since 4.01, ocamlbuild supports a new (experimental) option "-plugin-tag"
that allows to specify (built-in) ocamlbuild tags to use when compiling
myocamlbuild.ml. If you package coq-paths using findlib, you can then use

  ocamlbuild -use-ocamlfind -plugin-tag "package(coq-path)" ...


On Tue, Dec 10, 2013 at 11:20 PM, Gregory Malecha
<gmalecha@cs.harvard.edu>wrote:

> Hello --
>
> I have several ocamlbuild plugins that are very similar and I'm trying to
> figure out how to refactor them. I pulled out a bunch of definitions into
> another file (coq_paths.ml) and then said 'open Coq_paths' in '
> myocamlbuild.ml'. But when I do this, ocamlbuild can no longer build the
> plugin, not even if foo.cmo already exists in the _build directory.
>
> After hacking on this for a long time (and digging through the ocamlbuild
> sources) I found that you can write a Makefile that will build
> myocamlbuild.cmo using ocamlbuild without a plugin, and then manually link
> this against ocamlbuild.cmo and to produce a custom version of ocamlbuild
> that uses the plugin (this is exactly what ocamlbuild does). My question
> is: 'is there any nicer way to do this?' I'm including my Makefile below:
>
> OCAMLBUILDDIR=$(shell ocamlfind query ocamlbuild)
>
> all: _build/coq_builder
>         @ ./_build/coq_builder -no-plugin coq.otarget
>
> _build/coq_builder: myocamlbuild.ml coq_paths.ml
>         @ echo "building builder...."
>         @ ocamlbuild -cflags -I,`ocamlfind query ocamlbuild` -no-plugin
> myocamlbuild.cmo
>         @ ocamlc.opt unix.cma -I $(OCAMLBUILDDIR)
> $(OCAMLBUILDDIR)/ocamlbuildlib.cma \
>            _build/coq_paths.cmo _build/myocamlbuild.cmo \
>            $(OCAMLBUILDDIR)/ocamlbuild.cmo -o _build/coq_builder
>         @ echo "done"
>
> clean:
>         ocamlbuild -clean
>
> Thanks in advance.
>
> --
> gregory malecha
> http://www.people.fas.harvard.edu/~gmalecha/
>

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Re: [Caml-list] ocamlbuild plugins and external libraries

[Gregory Malecha]

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Thanks Gabriel --

I couldn't figure out how to get the package included, which you do with
-use-ocamlfind.


On Wed, Dec 11, 2013 at 1:03 AM, Gabriel Scherer
<gabriel.scherer@gmail.com>wrote:

> Since 4.01, ocamlbuild supports a new (experimental) option "-plugin-tag"
> that allows to specify (built-in) ocamlbuild tags to use when compiling
> myocamlbuild.ml. If you package coq-paths using findlib, you can then use
>
>   ocamlbuild -use-ocamlfind -plugin-tag "package(coq-path)" ...
>
>
> On Tue, Dec 10, 2013 at 11:20 PM, Gregory Malecha <gmalecha@cs.harvard.edu
> > wrote:
>
>> Hello --
>>
>> I have several ocamlbuild plugins that are very similar and I'm trying to
>> figure out how to refactor them. I pulled out a bunch of definitions into
>> another file (coq_paths.ml) and then said 'open Coq_paths' in '
>> myocamlbuild.ml'. But when I do this, ocamlbuild can no longer build the
>> plugin, not even if foo.cmo already exists in the _build directory.
>>
>> After hacking on this for a long time (and digging through the ocamlbuild
>> sources) I found that you can write a Makefile that will build
>> myocamlbuild.cmo using ocamlbuild without a plugin, and then manually link
>> this against ocamlbuild.cmo and to produce a custom version of ocamlbuild
>> that uses the plugin (this is exactly what ocamlbuild does). My question
>> is: 'is there any nicer way to do this?' I'm including my Makefile below:
>>
>> OCAMLBUILDDIR=$(shell ocamlfind query ocamlbuild)
>>
>> all: _build/coq_builder
>>         @ ./_build/coq_builder -no-plugin coq.otarget
>>
>> _build/coq_builder: myocamlbuild.ml coq_paths.ml
>>         @ echo "building builder...."
>>         @ ocamlbuild -cflags -I,`ocamlfind query ocamlbuild` -no-plugin
>> myocamlbuild.cmo
>>         @ ocamlc.opt unix.cma -I $(OCAMLBUILDDIR)
>> $(OCAMLBUILDDIR)/ocamlbuildlib.cma \
>>            _build/coq_paths.cmo _build/myocamlbuild.cmo \
>>            $(OCAMLBUILDDIR)/ocamlbuild.cmo -o _build/coq_builder
>>         @ echo "done"
>>
>> clean:
>>         ocamlbuild -clean
>>
>> Thanks in advance.
>>
>> --
>> gregory malecha
>> http://www.people.fas.harvard.edu/~gmalecha/
>>
>
>


-- 
gregory malecha
http://www.people.fas.harvard.edu/~gmalecha/

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