[R] Dyn.load of sharing object with GSL library

[Vicky Landsman]

Following the recommendation of Prof. Ripley, I have created the Makevars
file with the line:
PKG_LIBS="-L/usr/lib/libm -lm -L/usr/local/lib/libgsl -lgsl -L/usr/local/lib
/libgslcblas -lgslcblas"
in the working directory.
Now I have the code file Example3.c which computes the Bessel function value
(the example is taken from the GSL reference book).
I am running:
R CMD SHLIB Example3.c
and all looks good.
The dyn.load("Example3.so") fails with the following error message:

Error in dyn.load(x, as.logical(local), as.logical(now)) :
        unable to load shared library
"/fs/users1/guest/msvika/PhD/R_04/Example3.so":
  ld.so.1: /usr/local/sbin/R-1.9/R-1.9.1/bin/R.bin: fatal: relocation error:
file /fs/users1/guest/msvika/PhD/R_04/Example3.so: symbol gsl_sf_bessel_J0:
referenced symbol not found

What is wrong?
Much thanks, Vicky.

----- Original Message ----- 
From: "Vicky Landsman" <msvika at mscc.huji.ac.il>
To: "r-help" <r-help at stat.math.ethz.ch>
Sent: Thursday, September 09, 2004 6:18 PM
Subject: Re: [R] Adding GSL library path to SHLIB


> Dear Prof. Ripley,
> We read the archive thread
> http://maths.newcastle.edu.au/~rking/R/help/02b/0547.html
> Thank you for your help, we will try to create the Makevars file.
> Vicky.
>
>
>
> ----- Original Message ----- 
> From: "Prof Brian Ripley" <ripley at stats.ox.ac.uk>
> To: "Vicky Landsman" <msvika at mscc.huji.ac.il>
> Cc: "r-help" <r-help at stat.math.ethz.ch>; <leonid at cc.huji.ac.il>
> Sent: Thursday, September 09, 2004 3:17 PM
> Subject: Re: [R] Adding GSL library path to SHLIB
>
>
> > On Thu, 9 Sep 2004, Vicky Landsman wrote:
> >
> > > Dear R-list people,
> >
> > > I asked a similar question a few hours before. I will try to be more
> > > specific.  We like to add the GSL library to the file SHLIB in order
to
> > > make it possible to run the C code using GSL functions from R.  We
read
> >
> > Read where?  It's incorrect information and only used for Fortran
linking.
> >
> > > that the path to the libgsl.a should be added to the line
shlib_libadd='
> > > ' in the file SHLIB but it does not work on our system. Dyn.load fails
> > > with error "referenced symbol <symbolname> not found". What is wrong?
> > > We will much appreciate any help on this.
> > >
> > > We are using R-1.9.1 on Unix.
> >
> > You should have a file called Makevars in the directory from which
> > you are doing the building, defining PKG_LIBS, maybe
> >
> > PKG_LIBS="-L/path/to/libgsl -lgsl"
> >
> > in the same way as you would for a package: see `Writing R Extensions'.
> > I don't think that is documented anywere, though.
> >
> > -- 
> > Brian D. Ripley,                  ripley at stats.ox.ac.uk
> > Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
> > University of Oxford,             Tel:  +44 1865 272861 (self)
> > 1 South Parks Road,                     +44 1865 272866 (PA)
> > Oxford OX1 3TG, UK                Fax:  +44 1865 272595
> >
> >
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
>