I have the following Fortran code

subroutine sub(path)
character*100 path
open(10,file=path)
end

saved as test.f

which I compile with
g77 -c test.f

then I make the shared libary in R (Version 1.9.0) with
system("R CMD SHLIB test.o")

so far, everything OK.

But
dyn.load("test.so")
returns the following error message:
Error in dyn.load(x, as.logical(local), as.logical(now)) :
        unable to load shared library "test.so":
  test.so: undefined symbol: f_open

I get similar error messages with r/w Fortran instructions like 
write(*,*) , read(*,*)

I used to use such programs on my computer under mandrake linux 10.
The problem reported occurs on a new server operating under 
another linux distrib (debian).

Thanks in advance for any help, 
Gilles 
-- 
_____________________________________________________________________
Gilles GUILLOT
INRA -D�partement Math�matiques et Informatique Appliqu�es

Unit� de Mixte de Recherche
INRA - INAPG - ENGREF
Institut National Agronomique de Paris-Grignon
16 rue Claude Bernard
75231 Paris cedex 5

Aile Claude Bernard
Niveau cours +3 �tages

tel : +33 (0)1 44 08 72 71
fax : +33 (0)1 44 08 16 66
http://www.inapg.fr/ens_rech/mathinfo/personnel/guillot/welcome.html

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