On 03/06/2015 08:48, bstr wrote:
Hi all,I have a C function, say Cfun, that calls Lapack's DGEMM routine and I need to create a shared library to use Cfun inside R. The C file is the following #include<stdio.h> #include<R.h> #include<R_ext/Lapack.h> void Cfun(double *res, double *X, int *n, int *q) { char *ptr_TRANSA, TRANSA='T', *ptr_TRANSB, TRANSB='N'; ptr_TRANSA=&TRANSA; ptr_TRANSB=&TRANSB; double *ptr_ALPHA, ALPHA=1.0, *ptr_BETA, BETA=0.0; ptr_ALPHA=&ALPHA; ptr_BETA=&BETA; dgemm_(ptr_TRANSA, ptr_TRANSB, q, q, n, ptr_ALPHA, X, n, X, n, ptr_BETA, res, q); } In Ubuntu I have no problem in compiling: R CMD SHLIB -llapack myfile.c. However, under Windows the -llapack flag is not recognised and I am able to get the code compiled only if I build an R package with the suitable Makevars file options: PKG_LIBS=$(LAPACK_LIBS) $(FLIBS). Is there a way to get the .dll without resorting to build a package?
SHLIB reads a Makevars file .... The manual says so right at the top of the section http://cran.r-project.org/doc/manuals/r-release/R-exts.html#Using-Makevars .
Thanks in advance, N. Lunardon
-- Brian D. Ripley, rip...@stats.ox.ac.uk Emeritus Professor of Applied Statistics, University of Oxford 1 South Parks Road, Oxford OX1 3TG, UK ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
