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dyn.load error:

3 messages · reza shahidzadeh mahani, Brian Ripley, Guido Masarotto

Original
reza shahidzadeh mahani
# 
Hi,
I have some S functions plus Fortran routines that I want to use in R.
They work in S, but when I try to use "dyn.load" to link fortran codes in 
R , I get the following error. 
thanks, reza

(I am using R-1.0.1 on windows NT, The name of fortran file (compiled
Ratfor) is deldirld.o and it's in the D:\Reza\476\tv.gonsrc.R\ directory)
Error in dyn.load(x, as.logical(local), as.logical(now)) : 
        unable to load shared library
"D:\Reza\476\tv.gonsrc.R\deldirld.o":
  LoadLibrary failure
**************************************************************************
Reza S. Mahani                              e-mail:        mahani at uiuc.edu
Department of Economics                     phone(Office):  (217) 333-4581
University of Illinois at Urbana-Champaign  phone(Home):    (217) 384-0987   
330 comm. west, 1206 S. sixth st.           FAX:            (217) 244-6678
Champaign, IL 61820, USA                    www.students.uiuc.edu\~mahani


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Brian Ripley
#
On Sun, 18 Jun 2000, reza shahidzadeh mahani wrote:

            

      
      
      
    

        
Oh dear!  How did you get "deldirld.o" and where did you get the idea you
can dyn.load .o files on R for Windows?  (You can't do that on S-PLUS for
Windows either, so I have no idea how they `work in S'.)  If you look at
help(dyn.load) in R it says

Arguments:

 libname: a character string giving the pathname to a DLL.


Normally if you try something like this on NT you get a dialog box
giving further information, and rw1010 is intended to get the maximal
information out of Windows.

What you need for dyn.load is a DLL, specifically a 32-bit relocatable
DLL with all dependent DLLs in the load path (the directory from which the
DLL is loaded plus the PATH setting).  So you need to go back to your
compiler manuals and work out to make such a DLL.   If you are using 
the mingw32 version of g77 as recommended for building packages, the
simplest way is to set up a minimal package sources  and run

make pkg-mypkg

Since the availability of tools has changed since rw1001, we suggest you
get rw1010 and work with that.

  
    

      
      
    

  


  


      

    

    

      
      

        


  

        

      Guido Masarotto
    

    

      
      #
    

  


  

      
On Sun, Jun 18, 2000 at 09:00:16PM -0500, reza shahidzadeh mahani wrote:

            

      
      
      
    

        
R can only load dynamic link library (dll) not object file.
  Hence, look to your compiler manual on how you can generate
  a dll. More details, including instruction for mingw, VC++ and
  Borland C++ are in the README.PACKAGES file included in 
  the rwXXXXsp.zip bit of the binary distribution.

  guido 
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