Re: [R] R shared object with Fortran archive files

From: Prof Brian Ripley <>
Date: Tue 16 May 2006 - 01:48:42 EST

On Mon, 15 May 2006, Theo Bell wrote:

> Hi,
> I am trying to create an R shared object using the R CMD SHLIB
> command. I have some .o object files and some .a archive files (for
> which I do not have the source code).
> R does not seem to include the code that is in the .a files, as when I
> use nm on the resulting shared library, there are lots of undefined
> symbols and dyn.load complains of undefined symbols. I have checked
> the .a archives and the symbols are defined there.
> Basically, I want to know if it is possible to include Fortran .a
> archive files as objects to be included in an R shared library. And if
> so, how?

Well, not as objects but as an archive. Try

export PKG_LIBS=-L/path/to/archive -lmyar.a

or similar.

Brian D. Ripley,        
Professor of Applied Statistics,
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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