[Caml-list] Porblem with Num module

[Caml-list] Porblem with Num module

[Claudio Trento]

I`ve included the line "open Num" at the begin of my test.ml file  to use 
the Num module. Maybe it's not enough because I've this type of error in 
cmpilation:

"Error while linking test.cmo: Reference to undefined global `Num'"

Probably I forget something, someone could say me where I mistake?

Thanks,
Claudio


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Re: [Caml-list] Porblem with Num module

[Richard Jones]

On Thu, May 13, 2004 at 04:30:19PM +0200, Claudio Trento wrote:
> I`ve included the line "open Num" at the begin of my test.ml file  to use 
> the Num module. Maybe it's not enough because I've this type of error in 
> cmpilation:
> 
> "Error while linking test.cmo: Reference to undefined global `Num'"
> 
> Probably I forget something, someone could say me where I mistake?

Is there a file called 'num.cma' or 'num.cmxa' in your /usr/lib/ocaml/
directory?  You probably need to link with it.

Rich.

-- 
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Merjis Ltd. http://www.merjis.com/ - improving website return on investment
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[Caml-list] Porblem with Num module

[briand]

It's in the manual (just for future reference).

If you are using a system which supports dynamic linking you can just do

    #load "num.cma";;

if you are using windows which does not support dynamic linking you will
have to compile.

    ocamlc other_options num.cma other_files

Or make your own top-level which includes num:

    ocamlmktop -o mytop num.cma
    ./mytop

Brian

P.S. In the manual it actually lists the filename as "nums" not "num".
Is this a documentation bug ?


>>>>> "Claudio" == Claudio Trento <trento@di.unipi.it> writes:

  Claudio> I`ve included the line "open Num" at the begin of my
  Claudio> test.ml file to use the Num module. Maybe it's not enough
  Claudio> because I've this type of error in cmpilation:

  Claudio> "Error while linking test.cmo: Reference to undefined
  Claudio> global `Num'"

  Claudio> Probably I forget something, someone could say me where I
  Claudio> mistake?

  Claudio> Thanks, Claudio


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Re: [Caml-list] Porblem with Num module

[Virgile Prevosto]

Le jeudi 13 mai, à 16h30 +0200,
Claudio Trento a écrit:

> I`ve included the line "open Num" at the begin of my test.ml file  to
> use the Num module. Maybe it's not enough because I've this type of
> error in cmpilation:
> 
> "Error while linking test.cmo: Reference to undefined global `Num'"
> 
> Probably I forget something, someone could say me where I mistake?
> 
Hello,
I suppose you're talking about the Num library described in the ocaml
manual at <http://pauillac.inria.fr/ocaml/htmlman/manual036.html>. As
mentionned there, you have to add nums.cma to the command line for the
linking phase. This is not needed for the compilation itself (-c option
of the compiler):
ocamlc -c test.ml
ocamlc nums.cma test.cmo 
should work (you may have to add other .cm[o/a] files on the second
line depending on what's in test of course).
In addition, note that there is a subtle difference between the name of
the file providing the library (nums.cma), and one of the module of this
library (Num, without 's').
Hope this helps,
-- 
E tutto per oggi, a la prossima volta
Virgile

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Re: [Caml-list] Porblem with Num module

[William Lovas]

On Thu, May 13, 2004 at 08:39:43AM -0700, briand@aracnet.com wrote:
> P.S. In the manual it actually lists the filename as "nums" not "num".
> Is this a documentation bug ?

No -- `nums.cma' is the name of the library file.  It contains several
modules: Num, Big_int, Ratio... (others?  I'm not sure how to analyze a
.cma file to see what it contains other than by trial and error...)

cheers,
William

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Re: [Caml-list] Porblem with Num module

[Shawn Wagner]

On Sat, May 15, 2004 at 02:00:03AM -0400, William Lovas wrote:

> No -- `nums.cma' is the name of the library file.  It contains several
> modules: Num, Big_int, Ratio... (others?  I'm not sure how to analyze a
> .cma file to see what it contains other than by trial and error...)

Though it's not normally built in a standard ocaml install, there's a
program called objinfo that will display information about bytecode files,
including a list of every module in a .cma file. Run 'make objinfo' in
OCAML-SOURCE/tools/ to compile it.

-- 
Shawn Wagner
shawnw@speakeasy.org

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Re: [Caml-list] Porblem with Num module

[Richard Jones]

On Fri, May 14, 2004 at 11:20:01PM -0700, Shawn Wagner wrote:
> On Sat, May 15, 2004 at 02:00:03AM -0400, William Lovas wrote:
> 
> > No -- `nums.cma' is the name of the library file.  It contains several
> > modules: Num, Big_int, Ratio... (others?  I'm not sure how to analyze a
> > .cma file to see what it contains other than by trial and error...)
> 
> Though it's not normally built in a standard ocaml install, there's a
> program called objinfo that will display information about bytecode files,
> including a list of every module in a .cma file. Run 'make objinfo' in
> OCAML-SOURCE/tools/ to compile it.

If you're using Debian, then program should be installed and called
'ocamlobjinfo'.  It's very useful - should be installed by default
everywhere I think.

Rich.

-- 
Richard Jones. http://www.annexia.org/ http://www.j-london.com/
Merjis Ltd. http://www.merjis.com/ - improving website return on investment
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