How to compile using sexplib?

How to compile using sexplib?

[Luca de Alfaro]

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I am trying to use sexplib to serialize some data structures, as many of you
advised, and I am somewhat stuck trying to compile.
This is what I get:

ocamlfind ocamlc -package
unix,str,vec,mapmin,hashtbl_bounded,fileinfo,intvmap,extlib,mysql,sexplib -I
../../batch/analysis -I +camlp4 -pp camlp4orf -g -c online_db.ml
File "online_db.ml", line 44, characters 22-26:
Parse error: [semi] expected after [str_item] (in [implem])
Preprocessor error

where my line 44 is simply:

type foo_t = int list with sexp

I have the impression that the problem is in how I compile.  Specifically,
if I do not use the "-pp camlp4orf" part, I get a "syntax error", as the
file is not getting preprocessed.
If I use the above -pp line, I get the error I reported.  I am not sure what
is the proper way to preprocess the file, and unfortunately, sexplib does
not explain how to compile code against it.
I am sure this is obvious for everybody, but it is the first time I use
camlp4, so some help would be appreciated.

All the best,

Luca

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Re: [Caml-list] How to compile using sexplib?

[Gerd Stolpmann]

Am Donnerstag, den 12.06.2008, 09:44 -0700 schrieb Luca de Alfaro:
> I am trying to use sexplib to serialize some data structures, as many
> of you advised, and I am somewhat stuck trying to compile. 
> This is what I get:
> 
> ocamlfind ocamlc -package
> unix,str,vec,mapmin,hashtbl_bounded,fileinfo,intvmap,extlib,mysql,sexplib -I ../../batch/analysis -I +camlp4 -pp camlp4orf -g -c online_db.ml
> File "online_db.ml", line 44, characters 22-26:
> Parse error: [semi] expected after [str_item] (in [implem])
> Preprocessor error

I would try

ocamlfind ocamlc -package sexplib,... -syntax camlp4o -I ... -c
online_db.ml

ocamlfind includes some mechanics to drive camlp4, and I am pretty sure
sexplib configures that.

Gerd

> 
> where my line 44 is simply: 
> 
> type foo_t = int list with sexp
> 
> I have the impression that the problem is in how I compile.
> Specifically, if I do not use the "-pp camlp4orf" part, I get a
> "syntax error", as the file is not getting preprocessed. 
> If I use the above -pp line, I get the error I reported.  I am not
> sure what is the proper way to preprocess the file, and unfortunately,
> sexplib does not explain how to compile code against it. 
> I am sure this is obvious for everybody, but it is the first time I
> use camlp4, so some help would be appreciated. 
> 
> All the best, 
> 
> Luca
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gerd@gerd-stolpmann.de          http://www.gerd-stolpmann.de
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Re: [Caml-list] How to compile using sexplib?

[Markus Mottl]

On Thu, Jun 12, 2008 at 1:28 PM, Gerd Stolpmann <info@gerd-stolpmann.de> wrote:
> ocamlfind includes some mechanics to drive camlp4, and I am pretty sure
> sexplib configures that.

Since we do not use packages in our build tree (all used libraries are
part of the tree anyway), we have hardly tested the ocamlfind rules in
the sexplib META file.  I'm pretty sure they are not complete or
correct.  I don't know enough about ocamlfind to quickly solve this
issue. If anybody more knowledgeable (Gerd? ;) knows what to add to
the META file to make this work, I'd be glad to update the sexplib
distribution quickly.

Regards,
Markus

-- 
Markus Mottl http://www.ocaml.info markus.mottl@gmail.com

Re: How to compile using sexplib?

[Sylvain Le Gall]

Hello,

On 12-06-2008, Markus Mottl <markus.mottl@gmail.com> wrote:
> On Thu, Jun 12, 2008 at 1:28 PM, Gerd Stolpmann <info@gerd-stolpmann.de> wrote:
>> ocamlfind includes some mechanics to drive camlp4, and I am pretty sure
>> sexplib configures that.
>
> Since we do not use packages in our build tree (all used libraries are
> part of the tree anyway), we have hardly tested the ocamlfind rules in
> the sexplib META file.  I'm pretty sure they are not complete or
> correct.  I don't know enough about ocamlfind to quickly solve this
> issue. If anybody more knowledgeable (Gerd? ;) knows what to add to
> the META file to make this work, I'd be glad to update the sexplib
> distribution quickly.


META in sexplib310 (3.7.4, the one distributed in debian unstable), is
all you need.

You just have to to compile using 
"ocamlfind ocamlc .... -package sexplib.syntax -syntax camlp4o ..."

At least, it works for me.

Regards,
Sylvain Le Gall

Re: [Caml-list] Re: How to compile using sexplib?

[Ian Pye]

Hi,

I am trying the above solution, and getting this:

ocamlfind ocamlc -package
unix,str,vec,mapmin,hashtbl_bounded,fileinfo,intvmap,extlib,mysql,sexplib.syntax
-syntax camlp4o -I ../../batch/analysis -g -c online_db.ml

File "online_db.ml", line 44, characters 27-31:
Failure: "Pa_type_conv: path not set"
Preprocessor error

At least its something different.

Ian


On Thu, Jun 12, 2008 at 12:23 PM, Sylvain Le Gall <sylvain@le-gall.net> wrote:
> Hello,
>
> On 12-06-2008, Markus Mottl <markus.mottl@gmail.com> wrote:
>> On Thu, Jun 12, 2008 at 1:28 PM, Gerd Stolpmann <info@gerd-stolpmann.de> wrote:
>>> ocamlfind includes some mechanics to drive camlp4, and I am pretty sure
>>> sexplib configures that.
>>
>> Since we do not use packages in our build tree (all used libraries are
>> part of the tree anyway), we have hardly tested the ocamlfind rules in
>> the sexplib META file.  I'm pretty sure they are not complete or
>> correct.  I don't know enough about ocamlfind to quickly solve this
>> issue. If anybody more knowledgeable (Gerd? ;) knows what to add to
>> the META file to make this work, I'd be glad to update the sexplib
>> distribution quickly.
>
>
> META in sexplib310 (3.7.4, the one distributed in debian unstable), is
> all you need.
>
> You just have to to compile using
> "ocamlfind ocamlc .... -package sexplib.syntax -syntax camlp4o ..."
>
> At least, it works for me.
>
> Regards,
> Sylvain Le Gall
>
> _______________________________________________
> Caml-list mailing list. Subscription management:
> http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list
> Archives: http://caml.inria.fr
> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
> Bug reports: http://caml.inria.fr/bin/caml-bugs
>

Re: [Caml-list] Re: How to compile using sexplib?

[Sylvain Le Gall]

Hello,

On Thu, Jun 12, 2008 at 03:02:30PM -0700, Ian Pye wrote:
> Hi,
> 
> I am trying the above solution, and getting this:
> 
> ocamlfind ocamlc -package
> unix,str,vec,mapmin,hashtbl_bounded,fileinfo,intvmap,extlib,mysql,sexplib.syntax
> -syntax camlp4o -I ../../batch/analysis -g -c online_db.ml
> 
> File "online_db.ml", line 44, characters 27-31:
> Failure: "Pa_type_conv: path not set"
> Preprocessor error
> 

Read the documentation ;-)

You need to add something like:

TYPE_CONV_PATH "CsvGenerator"

in your .ml file.

Regards
Sylvain Le Gall

Re: [Caml-list] How to compile using sexplib?

[Markus Mottl]

On Thu, Jun 12, 2008 at 1:28 PM, Gerd Stolpmann <info@gerd-stolpmann.de> wrote:
>> This is what I get:
>>
>> ocamlfind ocamlc -package
>> unix,str,vec,mapmin,hashtbl_bounded,fileinfo,intvmap,extlib,mysql,sexplib -I ../../batch/analysis -I +camlp4 -pp camlp4orf -g -c online_db.ml
>> File "online_db.ml", line 44, characters 22-26:
>> Parse error: [semi] expected after [str_item] (in [implem])
>> Preprocessor error

I have taken another quick look at this problem.  Here is the solution:

Use "sexplib.syntax" instead of "sexplib" as package, add "-syntax
camlp4o", and drop "-I +camlp4 -pp camlp4orf".  This should fix the
problem.

Regards,
Markus

-- 
Markus Mottl http://www.ocaml.info markus.mottl@gmail.com