Description of problem:

Graphviz builds fail with:

gv_ocaml.cpp:866:54: error: declaration of C function 'int caml_array_length(caml_value_t)' conflicts with
In file included from /usr/lib64/ocaml/caml/alloc.h:24:0,
                 from gv_ocaml.cpp:752:
/usr/lib64/ocaml/caml/mlvalues.h:252:21: error: previous declaration 'mlsize_t caml_array_length(caml_value_t)' here


swig generated the gv_ocaml.cpp with:
    SWIGSTATIC int caml_array_length( CAML_VALUE arr );

mlvalues.h expects:
    CAMLextern mlsize_t caml_array_length (value);   /* size in items */

This is only a problem on x86_64;  no eror on i686.


Version-Release number of selected component (if applicable):
swig-2.0.7-1.fc18.x86_64
ocaml-4.00.0-0.3.beta2.fc18.x86_64

How reproducible:
100%

Steps to Reproduce:
1.  build graphviz (I'm building upstream development snapshots, but ocaml code hasn't changed recently so I expect this will effect the Fedora version too.)
2.
3.
  
Actual results:
compile errors as above

Expected results:
no compile errors

Additional info:
Only affects x86_64