On Wed, 10 May 2000, nicolas baurin wrote:
> Bonjour R people,
>
> Before to use "complex" c++ code under R (win95),
> i''m trying to import the c++ code that is in R-exts.pdf
(section3.5).
>
> I''m using Visual C++ 5.0.
>
> So i''ve created a "win32 dll" project, added the 3 files
(X.h, X.cpp and
> x_main.cpp as they''re written in the document [X_main is C
wrapped]) and
> builded a t.dll that i''ve copied to my R home directory.
> After a dyn.load("t.dll"), first problem, the Y static variable
is not
> constructed and 2nd when i call .C("X_main"), i got:
> Error in .C("X_main") : C/Fortran function name not in load
table.
>
> I suppose i did not build my dll like it should ... any help would be
> very welcome
Look in the rw-FAQ (always a good idea), as commands to build that example
under VC++ are given there. And that has been tested under VC++6.0. I
guess you forgot to export any symbols.
(I don''t think you can know that the Y variable is not constructed, as
you have no access to vars in the DLL. In particular, C++ I/O
will not work from Rgui at least (it just might from Rterm).)
--
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 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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