On Mon, 2007-09-17 at 18:08 -0300, Rod wrote:
> Hi all,
> 
>     I'm trying to compile the test file using ocamlmpi, but just what
> I have is this message
> -------------------------------------------------------------------------------
> ocamlc -o testmpi unix.cma mpi.cma test.ml -ccopt -L.
> File "test.ml", line 144, characters 6-9:
> Warning Y: unused variable res.
> /usr/bin/ld: cannot find -lmpi
> collect2: ld returned 1 exit status
> Error while building custom runtime system
> -----------------------------------------------------------------------------
> 
> I'm using mpich2-1.0.5p4.

Try 'locate libmpi' to find where it is on your system.
I have this:

$ ls -lasp /usr/lib/libmpi.so
0 lrwxrwxrwx 1 root root 27 2006-08-29 06:45 /usr/lib/libmpi.so
-> /etc/alternatives/libmpi.so

$ ls -lasp /etc/alternatives/libmpi.so
0 lrwxrwxrwx 1 root root 37 2007-04-20 04:06 /etc/alternatives/libmpi.so
-> /usr/lib/mpich/lib/shared/libmpich.so

$ ls -lasp /usr/lib/mpich/lib/shared/libmpich.so 
0 lrwxrwxrwx 1 root root 15 2007-04-20
03:52 /usr/lib/mpich/lib/shared/libmpich.so -> libmpich.so.1.0

$ ls -lasp /usr/lib/mpich/lib/shared/libmpich.so.1.0
824 -rw-r--r-- 1 root root 837128 2006-11-12
06:59 /usr/lib/mpich/lib/shared/libmpich.so.1.0

Hey, finally found it! [Ubuntu Linux]

-- 
John Skaller <skaller at users dot sf dot net>
Felix, successor to C++: http://felix.sf.net