[Caml-list] lacaml and redhat 8.0

[Caml-list] lacaml and redhat 8.0

[Yaron M. Minsky]

I've got a dull installation problem, so tune out now if you don't care
about getting lacaml to work on RH 8.0.

Has anyone had any luck installing lacaml on RH 8.0?   I've been trying to
install using the stock LAPACK, BLAS and F2C, and have been running into
trouble.  First of all, RH 8.0 doesn't include libf2c.a --- it only
include libg2c, and then only the .so version, not the .a version.  I
tried linking against the libg2c.a supplied in the g77-compat library, and
it seemed to work.  But then when I tried actually using lacaml, I hit
this:


        Objective Caml version 3.06

# #use "topfind";;
Findlib has been successfully loaded. Additional directives:
  #require "package";;      to load a package
  #list;;                   to list the available packages
  #camlp4o;;                to load camlp4 (standard syntax)
  #camlp4r;;                to load camlp4 (revised syntax)
  Topfind.reset();;         to force that packages will be reloaded

- : unit = ()
# #require "lacaml";;
Loading /usr/lib/ocaml/bigarray.cma
Loading /usr/lib/ocaml/site-lib/lacaml/lacaml.cma
The external function `lacaml_Sssqr_diff_wrapper_bc' is not available
#

Any advice is welcomed.

y

-- 
|--------/            Yaron M. Minsky              \--------|
|--------\ http://www.cs.cornell.edu/home/yminsky/ /--------|

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Re: [Caml-list] lacaml and redhat 8.0

[Markus Mottl]

On Fri, 17 Jan 2003, Yaron M. Minsky wrote:
> Has anyone had any luck installing lacaml on RH 8.0?   I've been trying to
> install using the stock LAPACK, BLAS and F2C, and have been running into
> trouble.  First of all, RH 8.0 doesn't include libf2c.a --- it only
> include libg2c, and then only the .so version, not the .a version.  I
> tried linking against the libg2c.a supplied in the g77-compat library, and
> it seemed to work.  But then when I tried actually using lacaml, I hit
> this:
[snip]
> # #require "lacaml";;
> Loading /usr/lib/ocaml/bigarray.cma
> Loading /usr/lib/ocaml/site-lib/lacaml/lacaml.cma
> The external function `lacaml_Sssqr_diff_wrapper_bc' is not available

That's easily explained: Lacaml requires static linking of the
C-libraries, because it has to fiddle around with objects contained in
them, which isn't possible with shared libraries. Thus, you will have to
build a custom toplevel that is (implicitly) linked against the modified
static libraries:

  ocamlfind ocamlmktop -o mytop -package lacaml bigarray.cma lacaml.cma

Executing this custom toplevel (it's _huge_!) and typing in your code
should work without problems...

Regards,
Markus Mottl

-- 
Markus Mottl                                             markus@oefai.at
Austrian Research Institute
for Artificial Intelligence                  http://www.oefai.at/~markus
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